CN100570459C - Be used to have the system and method for the display device of end-of-life phenomena - Google Patents

Abstract

The present invention discloses the system and method that is used for display life end image on an electronic console 900.When having enough water vapours, need not to continue to activate display and promptly can on the MEMS display device, display life finish image.This image can import in response to the user, in response to the water vapour that in the display encapsulation, detects a predetermined content, show according to device lifetime of pre-stored or according to the expiring naturally of life-span of display device and encapsulation.

Description

Be used to have the system and method for the display device of end-of-life phenomena

Technical field

Technical field of the present invention relates to MEMS (micro electro mechanical system) (MEMS), more specifically, relates to a kind of method and device that is used for display life end on a MEMS display device.

Background technology

MEMS (micro electro mechanical system) (MEMS) comprises micromechanical component, driver and electronic component.Micromechanical component can adopt deposition, etching or other several portions that can etch away substrate and/or institute's deposited material layer maybe can add several layers and make with the micromachined technology that forms electricity and electromechanical assembly.One type MEMS device is called as interferometric modulator.Interferometric modulator can comprise the pair of conductive plate, one of them or the two all can be transparent whole or in part and/or be reflectivity, and can relative motion when applying a suitable electric signal.One of them plate can comprise a quiescent layer that is deposited on the substrate, and another plate can comprise a metal film that separates by an air gap and this quiescent layer.Said apparatus is with a wide range of applications, and in this technology, utilizes and/or revises the characteristic of these types of devices so that its performance can be used for improving existing product and makes still undeveloped at present new product will be rather useful.

Compare with traditional Organic Light Emitting Diode (OLED) display, the MEMS display device is to reducing at assembling and the moisture of run duration and the sensitivity of oxygen.Be different from OLED, the MEMS display can encapsulate under environmental baseline and the relative humidity in the display encapsulation also can be worked up to 10% o'clock.Since the constraint condition of humidity sensitivity is loosened, thus opposite with the whole failure of apparatus of OLED, can control to be subjected to producing end-of-life image when excess water influences the MEMS display.

Summary of the invention

One embodiment of the present of invention are a kind of methods that show an image on a MEMS (micro electro mechanical system) (MEMS) display.This embodiment comprises a kind of method that makes MEMS display contact water vapour and activate described display in response to user's input.This method also comprises in response to described activation on described display and to show a predetermined image, wherein shows described image under the situation of sustained activation not.

Another embodiment of the present invention is a kind of MEMS (micro electro mechanical system) (MEMS) display device, and it has a MEMS display that is encapsulated in the encapsulation.In this embodiment, a water vapour sensor is positioned at described encapsulation and is coupled to described MEMS display.Described water vapour sensor is configured to detect water vapour that is higher than a predetermined content in the described encapsulation and the demonstration that produces a predetermined image in response to this.

Another embodiment of the present invention is a kind of method of making one display device.This embodiment comprises: a MEMS (micro electro mechanical system) (MEMS) device is provided on a substrate and a water vapour sensor also is provided.This embodiment also provides a kind of described MEMS device is sealed to a backboard to form the method for a display device, and wherein said water vapour sensor is configured to survey the vapour content in the described encapsulation.

An embodiment more of the present invention is a kind of MEMS display device of making by the following method: a MEMS (micro electro mechanical system) (MEMS) device is provided on a substrate and a water vapour sensor also is provided.In this embodiment, make described MEMS display by described MEMS device being sealed to a backboard to form a display device, wherein said water vapour sensor is configured to survey the vapour content in the described encapsulation.

Another embodiment of the present invention is a kind of display device, and it comprises the transmission member that is used for transmitted light.This embodiment also is provided for transmission is passed the modulation member that the light of described transmission member modulates and is used to cover described modulation member to form the covering member of a packing component.In addition, this embodiment has the detection means that is configured to survey the existence of water vapour in the described packing component.

Another embodiment of the present invention is a kind ofly to comprise the method that shows an image on MEMS (micro electro mechanical system) (MEMS) display of a plurality of display elements one.Described method comprises: a MEMS display is provided and disposes described MEMS display, so that in case the pre-life-span of determining of described MEMS display expires, promptly show a predetermined image.This method also shows described predetermined image when the pre-life-span of determining of described MEMS display has expired.

Another embodiment is a kind of method that is configured to show the MEMS device of a predetermined image of making, it comprises: a MEMS device is provided and disposes described MEMS display, so that, promptly show a predetermined image in case the pre-life-span of determining of described MEMS display expires.

Another embodiment is a kind of MEMS device of making by the following method: a MEMS device is provided and disposes described MEMS display, so that in case the pre-life-span of determining of described MEMS display expires, promptly show a predetermined image.

Other embodiment comprise a kind of MEMS device that is configured to show a predetermined image.This embodiment is provided for showing the MEMS display member and the layout structure of an image, and described layout structure is used in case the pre-life-span of determining of described MEMS display member expires, promptly shows a predetermined image.

An also embodiment of the present invention comprises a kind of MEMS device that is configured to show a predetermined image.This embodiment comprises a MEMS display, and wherein said display is configured to show a predetermined image when the pre-life-span of determining of described MEMS display has expired.

Description of drawings

Fig. 1 is first-class axle figure, it shows the part of an embodiment of an interferometric modulator display, wherein one of one first interferometric modulator removable reflection horizon is in an off-position, and a removable reflection horizon of one second interferometric modulator is in an excited target position.

Fig. 2 is a system block diagram, and it shows that one comprises an embodiment of the electronic installation of one 3 * 3 interferometric modulator displays.

Fig. 3 is the removable mirror position of an exemplary embodiment of interferometric modulator shown in Figure 1 and the graph of a relation of the voltage that applies.

Fig. 4 is one group of synoptic diagram that can be used for driving the row and column voltage of interferometric modulator display.

Fig. 5 A is presented at an exemplary frame of display data in 3 * 3 interferometric modulator displays shown in Figure 2.

Fig. 5 B demonstration can be used for writing the capable signal of frame shown in Fig. 5 A and an exemplary sequential chart of column signal.

Fig. 6 A is the sectional view of a device shown in Figure 1.

Fig. 6 B is a sectional view of an alternate embodiment of an interferometric modulator.

Fig. 6 C is a sectional view of another alternate embodiment of an interferometric modulator.

Fig. 7 is the sectional view of an embodiment of the encapsulating structure of a MEMS device.

But Fig. 8 one has the front elevation of an embodiment of telephone handset that display life finishes the electronic console of image.

Fig. 9 A one has the calcspar of the MEMS display device of water vapour sensor and sensor circuit.

Fig. 9 B one comprises the part sectioned view of an embodiment of the MEMS display device encapsulating structure of a water vapour sensor, and this water vapour sensor is configured to detect and has a water vapour that is higher than a predetermined content.

Figure 10 is that the axle that waits of the part of a demonstration one MEMS display embodiment is schemed, and wherein the cavity height in pre-selected MEMS element is less than the cavity height of not selecting the MEMS element.

Figure 11 one comprises the sectional view of an embodiment of the MEMS display device encapsulating structure in the zone that dry dosage reduces.

Figure 12 A is the synoptic diagram of the embodiment of a display, and the temperature that has wherein applied reduction is to show an end-of-life image.

Figure 12 B is the synoptic diagram of the embodiment of a display, has wherein applied high temperature to show an end-of-life image.

Figure 13 A and 13B are system block diagrams, and it shows that one comprises an embodiment of the visual display unit of a plurality of interferometric modulators.

Embodiment

Hereinafter will describe the MEMS display device that is configured to show an end-of-life image, a plurality of embodiment that reach the method for demonstration one end-of-life image in a MEMS display device.Some method comprises by the user and activates display to show a predetermined end-of-life image when making display be subjected to water vapour wittingly to influence.In one embodiment, activate a combination of a switch or some button and promptly can activate predetermined image being subjected to water vapour influence back, after this need not the user and carry out any further input and can keep showing this predetermined image.In certain embodiments, the MEMS display device configurations being become to survey display device encapsulates the content of interior water vapour and activates display so that show predetermined image.Hereinafter illustrate in further detail that with reference to Fig. 8-11 MEMS display device and display life finish other embodiment of the method for image.

Hereinafter explanation is at some embodiments of the invention.But, the present invention can implement by being permitted different ways.In this explanation, can be with reference to accompanying drawing, in the accompanying drawings, identical parts use identical number-mark from start to finish.Find out easily that according to following explanation the present invention can be at arbitrary display image-no matter be dynamic image (for example video) or still image (for example rest image) of being configured to, no matter be character image or picture-device in implement.More specifically, the present invention can implement in inferior numerous kinds of electronic installations or is associated with these electronic installations for example (but being not limited to): mobile phone, wireless device, personal digital assistant (PDA), handheld computer or portable computer, gps receiver/omniselector, camera, the MP3 player, video camera, game machine, wrist-watch, clock, counter, TV monitor, flat-panel monitor, computer monitor, automotive displays (for example mileometer display etc.), driving cabin control device and/or display, camera scenery display (for example backsight camera display of vehicle), electronic photo, electronics billboard or label, projector, building structure, packing and aesthetic structures (for example image display of a jewelry).The MEMS device that has similar structures with MEMS device described herein also can be used for non-display application, for example is used for electronic switching device.

Show an interferometric modulator display embodiment who contains an interfere type MEMS display element among Fig. 1.In these devices, pixel is in bright state or dark state.Under bright (" opening (on) " or " opening (open) ") state, display element reflexes to the user with most of incident visible light.Be in dark (" closing (off) " or " closing (closed) ") state following time, display element reflects the incident visible light to the user hardly.Decide on different embodiment, can put upside down the light reflectance properties of "on" and "off" state.The MEMS pixel can be configured to mainly reflect under selected color, also can realize colored the demonstration except that black and white.

Fig. 1 is first-class axle figure, and it shows two adjacent pixels in a series of pixels of a visual displays, and wherein each pixel comprises a MEMS interferometric modulator.In certain embodiments, an interferometric modulator display comprises a row/column array that is made of these interferometric modulators.Each interferometric modulator comprises a pair of reflection horizon, and this is positioned to each other to have a variable-sized optical resonance cavity at a distance of a variable and controlled distance at least to form one to the reflection horizon.In one embodiment, one of them reflection horizon can be moved between the two positions.Be referred to herein as on the primary importance of release conditions, the local reflex layer that the position of this displaceable layers distance one is fixed is far away relatively.On the second place, the position of this displaceable layers is more closely near this local reflex layer.Decide position according to removable reflection horizon, from the incident light of this two layers reflection can with mutually long or mutually the mode of disappearing interfere, thereby form the mass reflex or the non-reflective state of each pixel.

The pixel array portion that shows in Fig. 1 comprises two adjacent interferometric modulator 12a and 12b.In the interferometric modulator 12a in left side, demonstration one movably high reflection layer 14a is in an off-position, and this off-position is apart from fixing local reflex layer 16a one preset distance.In the interferometric modulator 12b on right side, demonstration one movably high reflection layer 14b is in an excited target position, and this excited target position is near fixing local reflex layer 16b.

Fixed bed 16a, 16b conduct electricity, the part is transparent and local is reflectivity, and can the layer of one or more respectively do for oneself chromium and tin indium oxides be made by for example depositing on a transparent substrates 20.Described each layer is patterned into parallel band, and can form the column electrode in the display device, as further specifying hereinafter.Displaceable layers 14a, 14b can form by one or more depositing metal layers that is deposited on pillar 18 tops (and column electrode 16a, 16b quadrature) and and be deposited on the series of parallel band that the middle expendable material between the pillar 18 constitutes.After expendable material was etched, these deformable metal levels separated with the air gap 19 of the metal level of fixing by a regulation.These deformable layer can use one to have high conductivity and reflexive material (for example aluminium), and those bands can form the row electrode in the display device.

When not applying voltage, cavity 19 remains between a layer 14a, the 16a, and deformable layer is in the mechanical relaxed state shown in pixel 12a among Fig. 1.Yet after a selected row and column applies potential difference (PD), the capacitor that forms at the respective pixel place of described row and column electrode intersection is recharged, and electrostatic force pulls to these electrodes together.If voltage is enough high, then displaceable layers generation deformation, and be forced on the fixed bed (can on fixed bed, deposit a dielectric material (not shown in this Figure), preventing short circuit, and the control separation distance), shown in the pixel 12b on right side among Fig. 1.Regardless of the potential difference (PD) polarity that is applied, the behavior is all identical.This shows, may command reflection and row/row of non-reflective pixel state encourage to traditional LCD and other display techniques in used row/row encourage similar in many aspects.

Fig. 2 to Fig. 5 B shows the example process and the system that use an interferometric modulator array in a display application.Fig. 2 is a system block diagram, and this figure shows that one can embody an embodiment of the electronic installation of each side of the present invention.In this exemplary embodiment, described electronic installation comprises a processor 21, and it can be any general purpose single-chip or multicore sheet microprocessor, for example ARM,

Pentium

Pentium

Pro, 8051,

Power

Or any special microprocessor, for example digital signal processor, microcontroller or programmable gate array.According to convention in the industry, processor 21 can be configured to carry out one or more software modules.Except that carrying out an operating system, also this processor can be configured to carry out one or more software applications, comprise web browser, telephony application, e-mail program or any other software application.

In one embodiment, processor 21 also is configured to communicate with an array controller 22.In one embodiment, this array control unit 22 comprises a horizontal drive circuit 24 and the column drive circuit 26 that signal is provided to a pel array 30.Array sectional view shown in Fig. 1 illustrates with line 1-1 in Fig. 2.For the MEMS interferometric modulator, described row/row excitation protocol can utilize the hysteresis property of these devices shown in Figure 3.It for example may need, and one 10 volts potential difference (PD) makes a displaceable layers be deformed into actuated state from release conditions.Yet, when described voltage when this value reduces, reduce when being back to below 10 volts at described voltage, described displaceable layers will keep its state.In the exemplary embodiment of Fig. 3, before voltage drop was low to moderate below 2 volts, displaceable layers can not discharge fully.Therefore, in example shown in Figure 3, exist one to be approximately the voltage range that 3-7 lies prostrate, exist one to apply voltage window in this voltage range, described device is stabilized in and discharges or actuated state in this window.Be referred to as " lag windwo " or " stability window " in this article.For an array of display with hysteresis characteristic shown in Figure 3, OK/the row excitation protocol can be designed to be expert at during the gating, the pixel that is energized is applied about 10 a volts voltage difference to selected in current, and to d/d pixel being applied one near 0 volt voltage difference.After gating, it is poor to apply about 5 a volts steady state voltage to pixel, and gating makes its residing any state so that its maintenance is expert at.After being written into, in this example, each pixel is all born one and is in " stability window " interior potential difference (PD) that 3-7 lies prostrate.This characteristic makes pixel design shown in Figure 1 be stabilized in an existing foment or release conditions under identical the voltage conditions that applies.Because each pixel of interferometric modulator, no matter be in foment or release conditions, in fact all be one by described fixed reflector and capacitor that mobile reflection horizon constituted, therefore, this steady state (SS) can be kept under the voltage in the lag windwo and consumed power hardly.If the current potential that is applied is constant, then there is not electric current to flow into pixel basically.

In the typical case uses, can be by determining that according to one group of desired actuated pixels in first row one group of row electrode forms a display frame.After this, a horizontal pulse is put on the electrode of the 1st row, thereby encourage the pixel corresponding with determined alignment.After this, determined one group of row electrode is become corresponding with desired one group of actuated pixels in second row.After this, with a pulse put on the 2nd the row electrode, thereby according to determined row electrode encourage the 2nd the row in respective pixel.The pixel of the 1st row is not subjected to the influence of the pulse of the 2nd row, thereby the state that keeps it to set at the impulse duration of the 1st row.The property mode repeats above-mentioned steps to the row of whole series in order, to form described frame.Usually, repeating this process continuously by the speed with a certain desired frame number/second to refresh and/or upgrade these frames with new video data.Also have a variety of row and the row electrodes that are used to drive pel array also to be known, and can be used for the present invention by people with the agreement that forms display frame.

Fig. 4,5A and Fig. 5 B show a kind of possible excitation protocol that is used for forming a display frame on 3 * 3 arrays shown in Figure 2.Fig. 4 shows one group of possible row and column voltage level of can be used for having the pixel of hysteresis curve shown in Figure 3.In the embodiment of Fig. 4, encourage a pixel to comprise and be set to-V being listed as accordingly _Bias, and will go accordingly and be set to+Δ V, it can correspond respectively to-5 volts and+5 volts.Discharging pixel then is to be set to 4V by being listed as accordingly _BiasAnd will go accordingly and be set to identical+Δ V, form one 0 volts potential difference (PD) at described pixel two ends thus and realize.In the row of 0 volt of those wherein capable voltages maintenance, pixel is stable at its initial residing state, and is in+V with these row _BiasStill-V _BiasIrrelevant.

Fig. 5 B is the sequential chart of a series of row of demonstration and column signal, and those signals put on 3 * 3 arrays shown in Figure 2, and it will form the demonstration shown in Fig. 5 A and arrange that wherein actuated pixels is non-reflectivity.Before writing the frame shown in Fig. 5 A, pixel can be in any state, and in this example, all row all are in 0 volt, and all row all be in+5 volts.Under these institute's voltages that apply, all pixels are stable at its existing actuated state or release conditions.

In the frame shown in Fig. 5 A, pixel (1,1), (1,2), (2,2), (3,2) and (3,3) are encouraged.For realizing this effect, during one " line time " of the 1st row, the 1st row and the 2nd row are set at-5 volts, the 3rd row are set at+5 volts.This can not change the state of any pixel, because all pixels all remain in the stability window of 3-7 volt.After this, rise to 5 volts of pulses that are back to 0 volt that descend again then by one from 0 volt and come gating the 1st row.Actuate pixel (1,1) and (1,2) and discharge pixel (1,3) thus.Other pixel in the array is all unaffected.For the 2nd row is set at desired state, the 2nd row are set at-5 volts, the 1st row and the 3rd row are set at+5 volts.After this, apply identical strobe pulse with actuate pixel (2,2) and discharge pixel (2,1) and (2,3) to the 2nd row.Equally, other pixel in the array is all unaffected.Similarly, by the 2nd row and the 3rd row are set at-5 volts, and be listed as the 1st be set at+5 volts to the 3rd capable the setting.The strobe pulse of the 3rd row is set at the state shown in Fig. 5 A with the 3rd row pixel.After writing incoming frame, the row current potential is 0, and the row current potential can remain on+5 or-5 volts, and after this demonstration will be stable at the layout shown in Fig. 5 A.Should be appreciated that, can use identical programs the array that constitutes by tens of or hundreds of row and columns.The sequential, order and the level that should also be clear that the voltage that is used to implement the row and column excitation can alter a great deal in above-described General Principle, and above-mentioned example only is exemplary, and any actuation voltage method all can be used for the present invention.

Detailed structure according to the interferometric modulator of above-mentioned principle operation can be ever-changing.For example, Fig. 6 A-6C shows three kinds of different embodiment of moving lens structure.Fig. 6 A is a sectional view embodiment illustrated in fig. 1, wherein deposition one strip of metal material 14 on the support member 18 that quadrature extends.In Fig. 6 B, movably reflecting material 14 only is on the tethers 32 at corner and is attached to support member.In Fig. 6 C, movably reflecting material 14 is suspended on the deformable layer 34.Because the structural design and the material therefor of reflecting material 14 can be optimized aspect optical characteristics, and the structural design of deformable layer 34 and material therefor can be optimized aspect the desired mechanical property, so this embodiment has some advantages.In many open files, comprise that for example No. 2004/0051929 U.S. discloses in the application case, the production of various dissimilar interference devices has been described.Can use the known technology of a variety of people to make said structure, comprise a series of material depositions, patterning and etching step.

For example the moving-member of MEMS device such as interferometric modulator array is preferable has a space that is protected to move in described space.Hereinafter will illustrate in greater detail the encapsulation technology of MEMS device.The synoptic diagram that shows the basic encapsulating structure of a MEMS device (for example interferometric modulator array) among Fig. 7.As shown in Figure 7, a basic encapsulating structure 70 comprises a substrate 72 and a backboard cover or " cap " 74, and wherein an interferometric modulator array 76 is formed on the substrate 72.This cap 74 is also referred to as " backboard ".

Substrate 72 is connected with formation encapsulating structure 70 by a seal 78 with backboard 74, thereby makes substrate 72, backboard 74 and seal 78 capsules envelope interferometric modulator array 76.This forms a cavity 79 between backboard 74 and substrate 72.Seal 78 can be a non-airtight sealing body, for example a traditional epoxy radicals sticker.In other embodiments, seal 78 can be polyisobutylene (be called isobutene rubber sometimes, other the time then be called PIB), O shape circle, polycarbamate, film metal weldering, liquid spin-coating glass, solder, polymkeric substance or plastics and vapor permeability scope be about 0.2-4.7gmm/m ²The seal of kPa days other types.In another embodiment, seal 78 can be an airtight sealing body.

In certain embodiments, encapsulating structure 70 comprises a kind of through the drying agent 80 of structure with the moisture in the reduction cavity 79.The person of ordinary skill in the field will know that for the encapsulation of airtight sealing, drying agent is also nonessential, but can desirably control the moisture that remains in the encapsulation.In one embodiment, drying agent 80 places between interferometric modulator array 76 and the backboard 74.The encapsulation that drying agent both can be used for having airtight sealing also can be used for having the encapsulation of non-airtight sealing.In the encapsulation with airtight sealing, drying agent is generally used for controlling the moisture that remains in encapsulation inside.In the encapsulation with non-airtight sealing, drying agent can be used for controlling the moisture that enters in the encapsulation in environment.Generally speaking, but any trapping moisture and can not disturb the material of the optical property of interferometric modulator array all to can be used as drying agent 80.Suitable desiccant material includes but not limited to zeolite, molecular sieve, surface adsorption agent, loose adsorbent and chemical reactor.

Drying agent 80 can have different forms, shape and size.Except being the solid form, drying agent 80 also can be powder type.These powder can directly be inserted in the encapsulation, and perhaps it can mix mutually with a sticker and applies.In an alternate embodiment, drying agent 80 can form different shape, for example cylindrical or thin slice shape before putting on encapsulation inside.

The person of ordinary skill in the field will understand, and drying agent 80 can apply by different modes.In one embodiment, drying agent 80 forms as the part deposition of interferometric modulator array 76.In another embodiment, drying agent 80 is to be coated on encapsulation 70 inside as a spraying or dip-coating coating.

Above can be, substrate 72 can form the translucent or transparency material of film, MEMS device.These transparency materials include but not limited to glass, plastics and transparent polymer.Interferometric modulator array 76 can comprise the modulator of film modulator or separable type.The person of ordinary skill in the field will understand, and backboard 74 can be made by arbitrary suitable material, for example be made by glass, metal, paper tinsel, polymkeric substance, plastics, pottery or semiconductor material (for example silicon).

Encapsulation process can be in a vacuum, vacuum until and comprise under the pressure of environmental pressure or be higher than under the pressure of environmental pressure and realize.Also can be during the sealing processing procedure have in the environment of variable and controlled high or low pressure and finish encapsulation procedure one.In the environment of bone dry interferometric modulator array 76 being encapsulated may be comparatively favourable, but and nonessential like this.Similarly, packaging environment can be the inert gas that is under the environmental baseline.Encapsulate the diversity that can reduce the technology cost and more may realize choice of equipment under environmental baseline, this is the operation that can not influence device under environmental baseline because device can transport.

Generally speaking, expectation makes the water vapor that infiltrates through in the encapsulating structure minimized, controls the environment in the encapsulating structure 70 thus, and it is carried out airtight sealing keeps constant to guarantee described environment.The example of one airtight sealing processing procedure is disclosed in United States Patent (USP) the 6th, 589, and in No. 625, this case is incorporated herein with way of reference in full.When the humidity in the encapsulation surpasses when to a certain degree the surface tension that causes because of moisture being become to be higher than the restoring force of displaceable element in the interferometric modulator 10 (not shown), thereby displaceable element may become permanent viscous extremely on the described surface.If humidity level is low excessively, then when displaceable element contacted with the surface that has applied, moisture can be charged to the polarity identical with displaceable element.

As indicated above, can use drying agent to control to retain in the moisture in the encapsulating structure 70.Yet, prevent that by making up an airtight sealing body 78 moisture from entering encapsulating structure 70 inside in atmosphere, can reduce needed drying agent or need not to use drying agent.

The continuing of sized display reduced to limit the method that is available for the environment in the management and control encapsulating structure 70, and this is to diminish because be used to place the zone of drying agent 80 in encapsulating structure 70.Because need not to use drying agent, thereby also can make encapsulating structure 70 attenuation, this is that people are desired in certain embodiments.Usually, in the encapsulation that contains drying agent, the expected life of packaged device can be depending on the life-span of drying agent.When drying agent exhausted fully, along with having abundant moisture to enter encapsulating structure and interferometric modulator array being caused damage, interferometric devices may lose efficacy.

Embodiments of the invention relate to and are used for for example electronic console of devices such as wireless telephone, personal digital assistant, digital music player, playphone and handheld video games machine.Fig. 8 shows that one has the wireless telephone 100 according to the display 102 of an embodiment.Display 102 is configured to show the image that comprises text and figure, for example shows telephone number, message, time, date, video-game character and similar image.

Display 102 can be the display of any type, comprises light emitting diode (LED), Organic Light Emitting Diode (OLED) or interferometric modulator (IMOD) direct-viewing type electronic console.As hereinafter being described in more detail, display 102 is configured to utilize the end-of-life phenomena that occurs when having the water vapour of q.s in the encapsulating structure at display to come display life to finish image.The end-of-life image can comprise message, graph image, the picture mosaic (puzzle) of (for example) humour or can indicate the unrenewable similar image of this device.For increasing user interest, the end-of-life phenomena of each device is preferable different, and just displays when being triggered by one or more situations of determining in advance.

Generally speaking, it is minimized that expectation makes the water vapour in the encapsulating structure that infiltrates through display device.In the MEMS device, humidity in encapsulation or water vapour are higher than displaceable element (or layer above to a certain degree making because of the caused surface tension of moisture becomes, displaceable layers 14a for example shown in Figure 1,14b) restoring force the time, displaceable layers may permanently adhere on the surface of opposed fixed surface in the MEMS element (fixed bed 16a, 16b among Fig. 1).In MEMS device encapsulation, exist excessive water steam to make and also can keep adhering to thin layer not continuing to apply the film that has activated under the voltage condition, shown in displaceable layers 14b among Fig. 1 and fixed bed 16b.Therefore, when having enough water vapours, a display pixel that comprises the MEMS interferometric modulator also will keep under the voltage condition activating not applying.In certain embodiments, display device utilizes this one side of MEMS element to show a nonvolatil substantially end-of-life image on display.

In certain embodiments, a display device comprises a MEMS interferometric modulator display that is configured at end-of-life phenomena, and this end-of-life phenomena obtains triggering in the time of can having the water vapour that surpasses a scheduled volume in the display encapsulation.In one embodiment, the user of display device can finish phenomenon in any moment activated life of the life period of display.This embodiment can be used as (for example) a kind of novelty, wherein makes device contact water wittingly, presses the end-of-life message that activator button permanently shows a humour by the user then.

In another embodiment, display device configurations is become the water vapour of predetermined content in the acquisition scope encapsulation and show an end-of-life image in response to this detection.In another embodiment, the pre-data storage of determining the life-span of representing display device in storer, and is expired the life-span that this device is configured to store in response to determining and shows an end-of-life image.In another embodiment of display device, the cavity height that the pre-selected element of display is comprised is less than the not selected element of display, wherein when in display device encapsulation, having enough water vapours, on display, show an end-of-life image according to the element of pre-selected.In the another embodiment of display device, the encapsulating structure of display device comprises the drying agent on the backboard that is deposited on encapsulating structure, and wherein deposition reduces the drying agent of quantity or do not deposit drying agent in presumptive area.When in device package, having enough water vapours, according to display element display life end image on device in the zone of reducing near drying agent in the encapsulation.Hereinafter will illustrate in greater detail each embodiment among these embodiment.

In an embodiment of MEMS display device, finish phenomenon by user's activated life.The user can make display contact water vapour, for example display is placed high humidity environment (for example near a kettle boiling water) water vapour is introduced the display device encapsulating structure.When surpassing the water absorptive capacity of drying agent 80 (Fig. 8)-the inner relative humidity of encapsulation this moment will be tending towards reaching balance with external environment condition, and install and promptly accuse end-of-life.Under half air-tight packaging situation, water vapour can enter by the seal 78 of encapsulating structure 70, and perhaps as shown in Figure 8, encapsulating structure 70 can comprise that one has the hole of an embolism 108, and wherein the user takes off embolism 108 and makes display device contact water vapour wittingly.In one example, the user can exhale in encapsulating structure and make display contact water vapour.

After making display device contact water vapour, the user can activate display by for example one " end-of-life " switch 106, and wherein display device is configured in response to this kind user activates show a predetermined image 104 on display.Particularly, display device can be configured to apply a predetermined voltage in response to user's activator switch 106 to display.After applying this voltage, the displaceable layers of selected MEMS element promptly moves to its fixed bed separately of contact, finishes image with display life.Excessive water branch in the display makes the displaceable layers permanent fixed bed that adheres to that becomes, and promptly can keep this image on display thereby need not to continue to activate display.In one embodiment, the user activates display display life end image 104 by the predetermined combinations by the key on the lower device, button or switch 110.By this embodiment, the user can for example make the display of a novelty permanently effective.

In certain embodiments, the MEMS display device comprises a water vapour accumulating tank in encapsulating structure, and wherein this accumulating tank can be activated to discharge water vapour and make water vapour contact MEMS display in encapsulating structure by the user.In one embodiment, the MEMS display device comprises the drying agent of moisture or water vapour, and wherein the user can be by heating water or the water vapour that discharges in the drying agent to drying agent.For example, can use a contact pilotage or a thermal spike contact pilotage through heating that drying agent is heated.

Predetermined end-of-life image 104 can be for example by display device manufacturer, wholesale dealer or retailer's pre-stored, and/or device can be configured to the end-of-life image is selected or be programmed by the user.In one embodiment, by the user end-of-life image is customized to and comprises a selected image, this selected image comprises at least a in text and the figure.For example, the end-of-life image can comprise the text corresponding to user name, for example " GOOD-BYE LAUREN (goodbye, LAUREN) ".The user can select among the embodiment of end-of-life image therein, device can comprise a default end-of-life message, under the situation of the selected image of no user, show this end-of-life message, or also show the end-of-life message that this is default after removing user-selected image.

In another embodiment, a display device comprises that one is positioned at the water vapour sensor of display encapsulating structure, shown in Fig. 9 A-B.Fig. 9 A one has the calcspar of embodiment of the display device of a water vapour sensor 904, and wherein water vapour sensor 904 is coupled to a sensor circuit 906, and this sensor circuit 906 is coupled to a processor 908.Any sensor known to water vapour sensor 904 can be in the affiliated technical field.Hereinafter illustrate in greater detail the water vapour sensor of an exemplary with reference to Fig. 9 B.Processor 908 can be any general purpose single-chip or multicore sheet microprocessor, for example ARM,

Pentium

Pentium

Pro, 8051, Power

Or any special microprocessor, for example digital signal processor, microcontroller or programmable gate array.According to convention in the industry, processor 908 can be configured to carry out one or more software modules.Except that carrying out an operating system, also this processor can be configured to carry out one or more software applications, comprise web browser, telephony application, e-mail program or any other software application.

Water vapour sensor 904 is configured to have the water vapour that surpasses a predetermined content with sensor circuit 906 combined detections in the display device encapsulating structure.Sensor circuit 906 is configured in response to the water vapour that detects water vapour sensor 904 places is higher than a predetermined content to processor 908 transmission one detectable signal.In certain embodiments, water vapour sensor 904 is configured to except that surveying the water vapour that has a predetermined content, also survey the concrete amount of water vapour, so that water vapour sensor 904 and sensor circuit 906 are configured to determine whether the water vapour in the display device encapsulating structure is higher than a plurality of predetermined contents.Correspondingly, sensor circuit 906 is configured to processor 908 transmission one suitable detectable signal corresponding to detected vapour content in the display device encapsulating structure.

In one embodiment, processor 908 also is configured to communicate with an array controller 910.In one embodiment, this array control unit 910 comprises that pel array 916 to a MEMS display provides a horizontal drive circuit 912 and a column drive circuit 914 of signal.In response to the detectable signal from sensor circuit 906, processor is configured to by activating pel array 916 to show an end-of-life image to array control unit 910 transmission one appropriate signals.When water vapour sensor 904 detects when having enough water vapours, need not to continue to activate by array control unit 910, the pixel that is activated in the array 916 promptly can remain in effective status, and the end-of-life image will keep basically existence forever.

In one embodiment, processor 908 further is configured in response to will for example being stored in flash memory or the programmable ROM (read-only memory) (PROM) by the information stores of user's input in storer from the detectable signal of sensor circuit 906.For example, when display device was a phone, the telephone number that processor can be configured to formerly to be imported by the user was stored among a flash memory or the EEPROM.In addition, the end-of-life image information that can comprise an indication user has obtained the message of storing.

Water vapour sensor 904 is configured to survey among the embodiment that whether has different vapour contents or amount according to a plurality of predetermined contents therein, device can be configured to show a different image according to the predetermined vapour content that is surpassed.For example, display device configurations can be become and when being scheduled to vapour content, show one first image above one first, for example " THE LIFE OF YOUR DISPLAY WILL END IN 3 DAYS:TIME TO BUY A NEW PHONE (life-span of your display will finish after 3 days: this has bought a new display) ", when being scheduled to vapour content, show one second image above one second, for example " THE LIFEOF YOUR DISPLAY WILL END IN 1 DAY (life-span of your display will finish after 1 day) ", and when being scheduled to vapour content, show the 3rd image-end-of-life image above one the 3rd.Owing to have excessive water vapour and the displaceable layers of the MEMS element that activated correspondingly adheres to its corresponding fixed bed, thereby will will on display, keep demonstration the 3rd image-end-of-life image not continuing to activate under the situation of display.In certain embodiments, processor 908 can be configured to show in response to autobiography sensor circuit 906 receives a detectable signal user prompt of canned data whether, and for example " Your Display is goingto die in 3 days:store numbers? (life-span of your display will finish after 3 days: the storage numeral ?) "

In certain embodiments, display device can be configured to send and receive message or image in response to detect a predetermined vapour content in the display device encapsulating structure.In one embodiment, display device can be configured to show in response to detecting a predetermined vapour content advertising message about the price of new equipment that comes from manufacturer.For example, in response to detecting a predetermined vapour content, described device can be configured to give notice to device manufacturer or service provider, is sent the advertisement of device that can be for sale in response to this notice by device manufacturer or service provider.Display device further is configured to show the advertisement that receives from manufacturer or service provider to the user.

Fig. 9 B one has the part sectioned view of the display device encapsulating structure of an exemplary water vapour sensor 904.Water vapour sensor 904 shown in Fig. 9 B comprises two conductive members 950,952, and has an air gap 954 between conductive member 950,952.When not having water vapour, the resistance between the conductive member 950,952 is infinitely great substantially.Yet, thereby when the content of water vapour in the display encapsulating structure raise the amount increase that makes water vapour between the conductive member 950,952, the resistance between the conductive member 950,952 reduced corresponding to the amount of existing water vapour.Sensor circuit 906 can be positioned at beyond the encapsulating structure of sealing or be positioned at encapsulating structure.The person of ordinary skill in the field will know that described water vapour sensor only is an exemplary, and other sensors also belong in the category of the present invention.

Have among another embodiment of MEMS display device of end-of-life phenomena one, pre-determine the mission life of display according to the character of device and encapsulation.The mission life of display can be according to the MEMS element can be determined from the maximum water vapour amount that its corresponding fixed bed separates.In one embodiment, the mission life of display can be determined according to the absorptive capacity of the drying agent that is comprised in the display encapsulating structure and the expection infiltration rate that water vapor permeation is gone in the encapsulating structure at least in part.In one embodiment, will represent the data storage of the mission life of display to be coupled in the storer of a processor (for example processor among Fig. 2 21) in one, wherein said processor be configured to determine when the described pre-life-span of determining expires.Expire in response to the life-span of determining described display, described processor is configured to coordinate the activation of display, to show a predetermined image to the user.In one embodiment, processor is configured to further to determine when the current life-span of MEMS display be in the pre-preset range of determining the life-span, and coordinates the activation of display so that show an alerting image in response to the current life-span of determining the MEMS display is in the pre-preset range of determining the life-span.

Have among the another embodiment of MEMS display device of an end-of-life phenomena one, each MEMS element of MEMS display has different cavity heights.Comprise five adjacent MEMS element 1002a-e at the MEMS array portion shown in Figure 10.MEMS element 1002a-e comprises the fixed bed 1006 of a mechanical layer or displaceable layers 1004 and a conduction, and wherein displaceable layers 1004 is positioned at the top of pillar 1008a-f and the fixed bed 1006 of conduction is formed on the substrate 1009.Displaceable layers 1004 and fixed bed 1006 form the cavity 1010a-e of each corresponding MEMS element 1002a-e.As shown in figure 10, pillar 1008a-f has different height, thereby makes the cavity 1010a-e separately of each MEMS element 1002a-e have different height.For the MEMS element 1002b-d with the cavity height that reduces, existing water vapour was less than the MEMS element 1002a with bigger cavity height, e when mechanical layer or displaceable layers 1004 adhered to fixed bed 1006 with maintenance.Therefore, when having enough water vapours, will on the MEMS display, show an image according to MEMS element with the cavity height that reduces.

Have among another embodiment of MEMS display device of end-of-life phenomena one, the display device encapsulating structure comprises drying agent, and described drying agent has the absorptive capacity of intensity of variation on its whole surface.Figure 11 one has the sectional view of an exemplary embodiment of display device encapsulating structure of the drying agent 80 of variation.To be the corresponding reference numbering with reaching shown in Fig. 7 with reference to the similar component labelling of the described element of Fig. 7.As shown in Figure 11, drying agent 80 is coated to the backboard 74 of encapsulating structure, and wherein drying agent 80 comprises the zone 1102 of pre-selected, and the drying agent 80 that the zone 1102 of these pre-selected is had obviously is less than other not selected zones.Be positioned near the MEMS element the pre-selected zone 1102 in the display device 76, because of reducing, drying agent 80 in encapsulating structure, exists under the situation of enough water vapours, the permanent effective status that displaceable layers wherein is attached to fixed bed will be remained in, and but the MEMS element of the not selection area of close drying agent 80 will keep duty, and this is because drying agent 80 has been kept the water vapour in these zones here.Correspondingly, will on MEMS display device 76, show a predetermined image according to the MEMS element in the pre-selected zone 1102.The person of ordinary skill in the field will know that drying agent can not be contained in the pre-selected zone of drying agent, contain perhaps that adsorption capacity is compared the drying agent in the selection area not and the drying agent that reduces.

In another embodiment of a MEMS display device that is configured at end-of-life phenomena, the user can apply temperature difference to a surface of display encapsulation, for example extremely cold or very hot, thus cause that stream molecule in the display device encapsulating structure is near being applied in the motion in the zone of temperature difference.Described temperature difference for example can use a cold point or thermal spike contact pilotage to be applied to display surface, wherein shows an image according to being employed most advanced and sophisticated zone.Thereby the effect that is produced is similar to wherein screen application magnetic contact pilotage to a containing metal filament, with according to the application of magnetic contact pilotage and filament is attracted to the effect of the novel apparatus of screen surface display image.Thereby when using a thermal spike contact pilotage, the MEMS element that is contacted is released into reflective condition or white states, and when the cold sharp contact pilotage of use, the MEMS element that is contacted stays in the state of being activated or black state.

The embodiment that a kind of activated life finishes the method for phenomenon comprises that contact pilotage or cold sharp contact pilotage that use is for example cold apply temperature extremely cold or that reduce to a surface of display.Figure 12 A one comprises the exemplary synoptic diagram of the MEMS display 1200 of a plurality of MEMS elements 1202, has wherein applied the temperature that reduces to selective area 1204.The temperature that applies reduction can make the stream molecule that is present in the encapsulation of MEMS display device at selective area 1204 places of the temperature that is applied in reduction condensation take place.In certain embodiments, the amount that is present in the water vapour in the MEMS display device encapsulation is enough to further in institute's favored area the actuating MEMS element or makes the MEMS element remain in the position that is activated, and shows an image so that be shown in selected regional 1204 places as Figure 12 A.

Described method can further comprise activate display with the displaceable layers that encourages a plurality of MEMS elements, then with the display deactivation so that the displaceable layers of a plurality of MEMS elements moves to release conditions.Because condensation takes place at institute favored area 1204 places stream molecule, thereby the MEMS element in institute's favored area 1204 will remain in the excited target position and need not continue and activate, thus for example selected location display image shown in Figure 12 A on the MEMS display.In certain embodiments, can further activate display and remove the image demonstration.

Another embodiment that a kind of activated life finishes the method for phenomenon comprise use for example the contact pilotage of heat or thermal spike contact pilotage to the heating of the selective area in the surface of display or apply high temperature.Display is applied high temperature can make the stream molecule that is present in the encapsulation of MEMS display device be applied in the selected location evaporation of high temperature.Figure 12 B one comprises the exemplary synoptic diagram of the MEMS display 1220 of a plurality of MEMS elements 1222, wherein the selective area 1224 of the display that reaches its mission life has been applied high temperature.In one embodiment, the MEMS display device is because of existing enough water vapours to reach its mission life in MEMS display device encapsulation, and wherein a plurality of MEMS elements of display remain in and are activated or are energized state and need not to continue to activate.In certain embodiments, all MEMS elements all are in the state of being activated and need not to continue to activate basically, shown in Figure 12 B.When the selective area 1224 of user in display 1220 applied the temperature difference of rising, owing to the water vapour that makes removable film be in the state of being activated evaporates in response to applying high temperature, thereby the MEMS element at institute favored area 1224 places moved to release conditions.As shown in figure 12, the MEMS element at institute favored area 1224 places is in release conditions, and the MEMS element in the favored area does not remain in the state of being activated, thereby comes display image according to institute's favored area 1224.

In certain embodiments, described method can comprise the water vapour of surveying predetermined content in the encapsulation of MEMS display device and notify this display of user just near the terminal point of its mission life.Then, the user applies the temperature of reduction with the selected location display image in display, and is as indicated above.Perhaps, when having enough water vapours in display encapsulation, the user can activate display near the notice of its mission life terminal point in response to display, so that a plurality of MEMS element remains in and is subjected to active position and need not to continue to activate.Then, the user can apply high temperature to the selective area of display, with the MEMS element " release " of selected location to release conditions, thereby on display, show an image according to institute's favored area.In other embodiments, described about other embodiment of the present invention as mentioned, the user can make MEMS display contact water vapour wittingly.In addition, this method can comprise further that the activation display is to remove this image.

As indicated above, the MEMS display device is bigger to the tolerance limit of water vapour, wherein compares with other display device such as for example OLED, and this kind display will work on when having high vapour content.As everyone knows, the OLED display is to having tangible environmental constraints at assembly process and the moisture that exists and the measurer of oxygen in final encapsulation display.By contrast, the embodiment of MEMS display does not then require to have inert gas, vacuum or dry environment in assembling or run duration.Therefore, the effect that the MEMS display is allowed the water vapour that is subjected to high level can't duty until reaching, and the OLED display device is zero to the tolerance limit of the existence of water vapour substantially, and in case be subjected to the effect of a small amount of water vapor, whole OLED display just can't be worked.The existence of MEMS display element tolerance water vapour and the ability that keeps working make it possible to make up above-mentioned display device embodiment with end-of-life phenomena.

Figure 13 A and 13B are the system block diagrams of an embodiment of demonstration one display device 2040.Display device 2040 for example can be cellular phone or mobile phone.Yet the same components of display device 2040 and the form of doing slightly to change thereof also can be used as for example illustration of all kinds such as TV and portable electronic device display device.

Display device 2040 comprises a shell 2041, a display 2030, an antenna 2043, a loudspeaker 2045, an input media 2048 and a microphone 2046.Shell 2041 is made by any technology in the known numerous kinds of manufacturing process of person of ordinary skill in the field usually, comprises injection moulding and vacuum forming.In addition, shell 2041 can be made by any material in the numerous kinds of materials, includes, but is not limited to plastics, metal, glass, rubber and pottery or its combination.In one embodiment, shell 2041 comprises removable part (not shown), and the removable part that these removable parts can have different colours with other or comprise different identification, picture or symbol is used instead.

The display 2030 of exemplary display device 2040 can be any in the numerous kinds of displays, comprises bi-stable display as herein described.In other embodiments, display 2030 comprises flat-panel monitors such as plasma scope for example mentioned above, EL, OLED, STN LCD or TFT LCD or non-tablet display such as CRT or other tubular devices for example, and these displays are known by the person of ordinary skill in the field.Yet for ease of the explanation present embodiment, display 2030 comprises just like interferometric modulator display as herein described.

Figure 13 B schematically shows the assembly among the embodiment of exemplary display device 2040.Example illustrated display device 2040 comprises a shell 2041, and can comprise that other are closed in the assembly in the shell 2041 at least in part.For example, in one embodiment, exemplary display device 2040 comprises a network interface 2027, and this network interface 2027 comprises that one is coupled to the antenna 2043 of a transceiver 2047.Transceiver 2047 is connected to processor 2021, and processor 2021 is connected to again regulates hardware 2052.Regulating hardware 2052 can be configured to a signal is regulated (for example a signal being carried out filtering).Regulate hardware 2052 and be connected to a loudspeaker 2045 and a microphone 2046.Processor 2021 also is connected to an input media 2048 and a driving governor 2029.Driving governor 2029 is coupled to one frame buffer 2028 and is coupled to array driver 2022, and array driver 2022 is coupled to an array of display 2030 again.One power supply 2050 is all component power supply according to the designing requirement of particular exemplary display device 2040.

Network interface 2027 comprises antenna 2043 and transceiver 2047, so that exemplary display device 2040 can communicate by network and one or more device.In one embodiment, network interface 2027 also can have some processing capacity, to reduce the requirement to processor 2021.Antenna 2043 is to launch being used to known to the person of ordinary skill in the field and any antenna of received signal.In one embodiment, antenna is launched according to IEEE802.11 standard (comprising IEEE 802.11 (a), (b), or (g)) and is received the RF signal.In another embodiment, antenna is launched according to bluetooth (BLUETOOTH) standard and is received the RF signal.If be cellular phone, then antenna is designed to receive CDMA, GSM, AMPS or other and is used for the known signal that communicates at the mobile phone network.2047 pairs of signals that receive from antenna 2043 of transceiver carry out pre-service, so that it can be received and further be handled by processor 2021.Transceiver 2047 is also handled the signal that self processor 2021 receives, so that they can be by antenna 2043 from exemplary display device 2040 emissions.

In an alternate embodiment, can replace transceiver 2047 by a receiver.In another alternate embodiment, can replace network interface 2027 by an image source, this image source can store or produce and send out the view data of delivering to processor 2021.For example, this image source can be one and contains the software module that the digital video disk (DVD) of view data or hard disk drive or produce view data.

The overall operation of processor 2021 common control examples display device 2040.Processor 2021 automatic network interfaces 2027 or an image source receive data (for example Ya Suo view data), and this data processing is become raw image data or is processed into a kind of form that is easy to be processed into raw image data.Then, the data after processor 2021 will be handled are sent to driving governor 2029 or are sent to frame buffer 2028 and store.Raw data typically refers to the information that can discern the picture characteristics of each position in the image.For example, described picture characteristics can comprise color, saturation degree and gray level.

In one embodiment, processor 2021 comprises a microcontroller, CPU or is used for the logical block of the operation of control examples display device 2040.Regulating hardware 2052 generally includes and is used for sending signals and being used for amplifier and wave filter from microphone 2046 received signals to loudspeaker 2045.Adjusting hardware 2052 can be the discrete component in the exemplary display device 2040, perhaps can incorporate in processor 2021 or other assemblies.

Driving governor 2029 direct self processors 2021 or receive the raw image data that produces by processor 2021 from frame buffer 2028, and suitably with the raw image data reformatting so as high-speed transfer to array driver 2022.Particularly, driving governor 2029 is reformated into a data stream with raster-like format with raw image data, so that it has a chronological order that is suitable for scanning array of display 2030.Then, the information after driving governor 2029 will format is sent to array driver 2022.Although driving governor 2029 (for example lcd controller) normally as one independently integrated circuit (IC) be associated with system processor 2021, yet these controllers also can make up by many kinds of modes.It can be used as hardware and is embedded in the processor 2021, is embedded in the processor 2021 or together fully-integrated with example, in hardware and array driver 2022 as software.

Usually, the self-driven controllers 2029 of array driver 2022 receive the information after the format and video data are reformated into one group of parallel waveform, and the parallel waveform per second of this group many times is applied to from hundreds of of the x-y picture element matrix of display, thousands of lead-in wires sometimes.

In one embodiment, driving governor 2029, array driver 2022, and array of display 2030 be applicable to the display of arbitrary type as herein described.For example, in one embodiment, driving governor 2029 is a traditional display controller or bistable display controllers (a for example interferometric modulator controller).In another embodiment, array driver 2022 is a legacy drive or a bistable display driver (a for example interferometric modulator display).In one embodiment, a driving governor 2029 integrates with array driver 2022.This embodiment is very common in the integrated system of for example cellular phone, wrist-watch and other small-area display equal altitudes.In another embodiment, array of display 2030 is a typical array of display or a bistable array of display (a for example display that comprises an interferometric modulator array).

Input media 2048 makes the operation that the user can control examples display device 2040.In one embodiment, input media 2048 comprises a keypad (for example qwerty keyboard or telephone keypad), a button, a switch, a touch sensitive screen, a pressure-sensitive or thermosensitive film.In one embodiment, microphone 2046 is input medias of exemplary display device 2040.When using microphone 2046, can provide voice command to come the operation of control examples display device 2040 by the user to these device input data.

Well-known many kinds of energy storing devices in the technical field under power supply 2050 can comprise.For example, in one embodiment, power supply 2050 is a rechargeable accumulator, for example a nickel-cadmium accumulator or a lithium-ions battery.In another embodiment, power supply 2050 is a regenerative resource, capacitor or solar cell, comprises plastic solar cell and solar cell lacquer.In another embodiment, power supply 2050 is configured to the socket reception electric power on wall.

In certain embodiments, programmability is as indicated above is present in the driving governor in control, and this driving governor can be arranged on several positions of electronic display system.In some cases, the control programmability is present in the array driver 2022.The person of ordinary skill in the field will know, can reach the above-mentioned optimization of enforcement in different structures in number of hardware and/or the component software arbitrarily.

Above description details some embodiment of the present invention.Yet, should be appreciated that seem how in detail regardless of above illustrating on literal, the present invention still can implement by many kinds of modes.Also as indicated above, it should be noted that describe some feature of the present invention and aspect the time used particular term should not be regarded as meaning that this term is defined as in this article again only limits to comprise the feature of the present invention that is associated with this term or any concrete property of aspect.Therefore, category of the present invention should be explained according to enclose claims and any content of equal value thereof.

Claims (32)

1, a kind of method that on a MEMS (micro electro mechanical system) (MEMS) display, shows an image, it comprises:

Make MEMS display contact water vapour;

Activate described display in response to user's input; And

On described display, show a predetermined image in response to described activation, wherein under the situation of sustained activation not, show described image.

2, the method for claim 1, wherein said predetermined image comprise at least a in a user-selected image and the prestored images.

3, the method for claim 1 shows that wherein described predetermined image comprises at least a in videotex and the one or more figure.

4, the method for claim 1 wherein makes described MEMS display contact water vapour be included in to form in the encapsulating structure of described MEMS display a perforate of leading to external condition.

5, the method for claim 1, it further is included in and surveys the water vapour that is higher than a predetermined content in the described MEMS display.

6, method as claimed in claim 5, wherein survey the water vapour be higher than described predetermined content and comprise surveying and be higher than the water vapour of a plurality of predetermined contents, and show that a predetermined image comprises in response to detecting the water vapour that is higher than each content in described a plurality of predetermined content and show a different predetermined image.

7, the method for claim 1, wherein said MEMS display is an interferometric modulator display.

8, a kind of MEMS (micro electro mechanical system) (MEMS) display device, it comprises:

One is encapsulated in the MEMS display in the encapsulation; And

One is positioned at described encapsulation and is coupled to the water vapour sensor of described MEMS display, wherein said water vapour sensor is configured to detect the water vapour that is higher than a predetermined content in the described encapsulation, and demonstration of output one predetermined image on described MEMS display in response to this.

9, MEMS display device as claimed in claim 8, wherein said predetermined image comprise at least a in text and the one or more figure.

10, MEMS display device as claimed in claim 8, wherein said water vapour sensor is configured to detect the water vapour that is higher than a plurality of predetermined contents in the described encapsulation, and has the water vapour that is higher than each content in the described predetermined content and a demonstration of the different predetermined image of output one on described MEMS display in response to detecting in described encapsulation.

11, MEMS display device as claimed in claim 10 wherein shows at least one first predetermined image in response to the water vapour that detects one first predetermined content, and described at least one first predetermined image is indicated the residual life of described display device.

12, MEMS display device as claimed in claim 8, wherein said predetermined image comprise at least a in a user-selected image and the prestored images.

13, MEMS display device as claimed in claim 8, wherein said MEMS display device are configured to will be by information stores to a flash memory of user input in response to detecting the water vapour that is higher than a predetermined content.

14, MEMS display device as claimed in claim 8, wherein said MEMS display is an interferometric modulator display.

15, MEMS display device as claimed in claim 8, it further comprises:

One with the processor of described MEMS display electric connection, described processor is configured to image data processing; And

One with the memory storage of described processor electric connection.

16, MEMS display device as claimed in claim 15, it further comprises one drive circuit, described driving circuit is configured to send at least one signal to described MEMS display.

17, MEMS display device as claimed in claim 16, it further comprises a controller, described controller is configured to send to described driving circuit at least a portion of described view data.

18, MEMS display device as claimed in claim 15, it further comprises an image source module, described image source module is configured to send described view data to described processor.

19, MEMS display device as claimed in claim 18, wherein said image source module comprises at least one in a receiver, transceiver and the transmitter.

20, MEMS display device as claimed in claim 15, it further comprises an input media, described input media is configured to receive the input data and described input data is sent to described processor.

21, a kind of method of making one display device, it comprises:

One MEMS (micro electro mechanical system) (MEMS) device is provided on a substrate;

One water vapour sensor is provided; And

Described MEMS device is sealed to a backboard to form a display device, and wherein said water vapour sensor is configured to survey the vapour content in the described encapsulation.

22, method as claimed in claim 21, wherein said MEMS device is an interferometric modulator.

23, method as claimed in claim 21, wherein said substrate are a transparent substrates.

24, method as claimed in claim 21, wherein said MEMS device is configured to show in response to detecting water vapour by described water vapour sensor that a predetermined image, described predetermined image comprise at least a in a user-selected image and the prestored images.

25, method as claimed in claim 24, wherein said predetermined image comprise at least a in text and the one or more figure.

26, method as claimed in claim 21, wherein said water vapour sensor is configured to detect the water vapour that is higher than a plurality of predetermined contents in the described encapsulation, and has the water vapour that is higher than each content in the described predetermined content and a demonstration of the different predetermined image of output one on described MEMS display in response to detecting in described display device.

27, a kind of MEMS display device of making by method as claimed in claim 21.

28, a kind of display device, it comprises:

The transmission member that is used for transmitted light;

Be used for the modulation member that the light of described transmission member is modulated is passed in transmission;

One is used to cover described modulation member to form the backboard of a member that is used to encapsulate; And

One is configured to survey the water vapour sensor of the existence of water vapour in the described packing component.

29, display device as claimed in claim 28, wherein said transmission member comprises a transparent substrates.

30, display device as claimed in claim 28, wherein said modulation member comprises an interferometric modulator.

31, display device as claimed in claim 28, wherein said packing component comprise the encapsulation of a sealing.

32, display device as claimed in claim 28, wherein said display device is configured to show in response to detecting water vapour by described detection means that a predetermined image, described predetermined image comprise at least a in a user-selected image and the prestored images.

Images