CN100401145C - Color cholesterol type LCD device and its mfg. method - Google Patents
Color cholesterol type LCD device and its mfg. method Download PDFInfo
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- CN100401145C CN100401145C CNB2005100545860A CN200510054586A CN100401145C CN 100401145 C CN100401145 C CN 100401145C CN B2005100545860 A CNB2005100545860 A CN B2005100545860A CN 200510054586 A CN200510054586 A CN 200510054586A CN 100401145 C CN100401145 C CN 100401145C
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Abstract
The present invention relates to a color cholesterol type liquid crystal display and a manufacturing method thereof for solving the publicly known problems of a complicated fabrication process, difficulty in panel para-position, difficulty in electrode design, a complicated driving mode, etc. in a color cholesterol type liquid crystal display. The present invention provides a bistable color cholesterol type liquid crystal display which is manufactured in the method that display components are manufactured through the mutual collocation of the ink-jet method combined with the macromolecule aggregation method, two-step ultraviolet exposure technology and cholesterol liquid crystal by simple ink jet technology and two-step ultraviolet exposure technology. Besides, the technology can be applied to the manufacture of flexible color cholesterol type liquid crystal displays.
Description
Technical field
The present invention relates to a kind of color cholesterol type LCD device and manufacture method thereof, especially refer to a kind ofly have bistable color cholesterol type LCD device in conjunction with the making of arranging in pairs or groups mutually of twice ultraviolet exposure and cholesterol liquid crystal, and can be used as soft color cholesterol type LCD device with ink-jet method.
Background technology
In recent years, flexible display and Electronic Paper and e-book are just flourish, and employed display medium comprises that LCD, electrophoretic display device (EPD), electrochromism chromogenic device and electrolysis separate out display.On Application of Electronic Paper, cholesterol liquid crystal and other display medium are compared, preferable comparation and assessment are all arranged on brightness and contrast, the while cholesterol liquid crystal has can passive driving and the advantage of producing easily.
To reach full-color cholesterin liquid-crystal display in the past, two kinds of means commonly used are arranged: first kind is to utilize three layers of cholesterol structure, cholesterol liquid crystal by three layers of different colours reflection of storehouse, and the multiple different driving mode of arranging in pairs or groups, the reflection that makes this display can produce different colours, its shortcoming be three layer stack structures cause the panel contraposition be difficult for/electrode design is difficult for and is difficult to crooked situation.Second kind is to be the individual layer cholesterol structure; utilize the decomposable chiral dope of light to mix with cholesterol liquid crystal; by the illuminate condition of adjusting extraneous ultraviolet light; destroy and reduce the content of single area chiral dope; and reach individual layer and colorful effect; but this assembly fiduciary level is not good, is subject to the influence of external environment, is protected and need add a uvioresistant layer.
The known technology aspect, as U.S. Pat 5,949, No. 513 " with the broken colour LCD method for making (Methods of Manufacturing Multi-Color Liquid CrystalDisplays Using in Situ Mixing Techniques) of real-time hybrid technology ", be to disclose a kind of broken colour LCD method for making of utilizing real-time mixing, as shown in Figure 1, for known broken colour liquid crystal display device structure synoptic diagram, comprise one first substrate 10 with real-time hybrid technology, one second substrate 12, one first chiral dope 14, one second chiral dope 16, one whole gap barricade 18 and one drive circuit 20.
So above-mentioned patented technology pours into cholesterol liquid crystal again earlier first chiral dope 14 and second chiral dope 16 being printed to definition position, this patent is to focus on that color cholesterol adds printing technology and forms this broken colour LCD.
In addition, as U.S. Pat 6,331, No. 884 " making the method (Method of Makinga Liquid Crystal Device) of liquid-crystal apparatus " is to disclose a kind of method of using liquid crystal material to make a liquid-crystal apparatus.As shown in Figure 2, method preparation process figure for the making liquid-crystal apparatus of known technology comprises a plurality of liquid crystal materials 30, a plurality of resin partition wall 32, one first substrate 34, one second substrate 36, a plurality of conducting membranes 38, a plurality of insulation film 40, a plurality of gaps post 42 and one absorption layer 44 backlight.
Yet, above-mentioned U.S. Pat 6,331, the method of No. 884 making liquid-crystal apparatus, its shortcoming on the preparation process for coating resin monomer in advance on a plurality of insulation films 40, a plurality of liquid crystal materials 30 of spray printing again, carry out exposure technology again after covering second substrate 36, form a plurality of resin partition walls 32, so neither good control on thickness, the technology, and the driving voltage that needs is higher and image effect is relatively poor.
Summary of the invention
Fundamental purpose of the present invention is to propose a kind of color cholesterol type LCD device and manufacture method thereof, it is in conjunction with ultraviolet exposure and the cholesterol liquid crystal making display module of arranging in pairs or groups mutually with ink-jet method, utilize easy ink-jetting process to produce and have bistable color cholesterol type LCD device, and can be used as soft color cholesterol type LCD device.
In order to reach above-mentioned purpose, the present invention provides a kind of manufacture method of color cholesterol type LCD device, comprising: a plurality of chiral dope of spraying on one first electrode layer of an infrabasal plate; The cholesterol liquid crystal layer that mixes with the high polymer monomer material of coating one cholesterol liquid crystal on this first electrode layer, this cholesterol liquid crystal is the liquid crystal of a plurality of reflection different colours, and reflection wavelength between 400 to 800nm; In this cholesterol liquid crystal layer, form a plurality of barrier wall structures and a plurality of loam cake by exposure; And carry out the integrating step of a second electrode lay and this infrabasal plate.
In addition, the present invention also provides a kind of color cholesterol type LCD device, comprising: the infrabasal plate with one first electrode layer; A plurality of barrier wall structures, it is distributed on this infrabasal plate; A plurality of cholesterol liquid crystals, it is distributed between described barrier wall structure, described cholesterol liquid crystal is the liquid crystal of a plurality of reflection different colours, and reflection wavelength between 400 to 800nm; A plurality of cap rocks of going up, it is distributed on the described cholesterol liquid crystal; And a second electrode lay, it is distributed in described going up on the cap rock.
Description of drawings
Fig. 1 is known broken colour liquid crystal display device structure synoptic diagram with real-time hybrid technology;
Fig. 2 is the procedure figure of the making liquid-crystal apparatus of known technology;
Fig. 3 A to Fig. 3 E is the color cholesterol type LCD device synoptic diagram of first embodiment of the invention; And
Fig. 4 A to Fig. 4 E is the color cholesterol type LCD device synoptic diagram of second embodiment of the invention.
Embodiment
Reach technology, method and the effect that set purpose is taked in order further to understand the present invention, see also following about detailed description of the present invention and accompanying drawing, believe purpose of the present invention, feature and characteristics, go deep into and concrete understanding when getting one thus, yet accompanying drawing only provides reference and explanation usefulness, is not to be used for the present invention is limited.
Please refer to Fig. 3 A to Fig. 3 E, be the color cholesterol type LCD device synoptic diagram of first embodiment of the invention with the ink-jet method preparation, Fig. 3 A, pre-defined different viewing areas spray a plurality of chiral dope on one first electrode layer 54 of an infrabasal plate 52, these chiral dope are the chiral dope or the reactive liquid crystals of different proportion, this infrabasal plate is to use glass substrate or plastic base, this first electrode layer is to use inorganic conductive material or organic conductive material, and comprise active formula or passive type driving circuit, this spraying step is to realize with ink-jet method by an ink gun 50.
Fig. 3 B, the solution layer 56 that coating one is mixed with high polymer monomer or macromolecule prepolymer by the cholesterol liquid crystal of a plurality of reflection different colours is on first electrode layer 54, this cholesterol liquid crystal is cholesteric liquid crystal material and/or the composite material that adopts nematic crystal and chiral dope, its reflection wavelength of this cholesterol liquid crystal comprises the visible region between 400 to 800nm, also can contain a pigment in this cholesterol liquid crystal, also be contained in addition on one first electrode layer of an infrabasal plate coating one and join layer mutually in preparation process, wherein this joins mutually that layer is to adopt polyvinyl alcohol (PVA), pi, polyamide, nylon, silicon dioxide, little groove or lecithin.
Fig. 3 C, form a plurality of barrier wall structures 58 in this cholesterol liquid crystal layer, these barrier wall structures are macromolecular material, also can contain a pigment in these macromolecular materials, this step that forms a plurality of barrier wall structures is to cause in the ultraviolet photoetching mode to be separated and to form, and this ultraviolet photoetching mode is to cooperate a light shield 62 to realize by a ultraviolet light 64.
Fig. 3 D carries out ultraviolet photoetching and causes a plurality of loam cakes 60 of formation that are separated, and this ultraviolet photoetching mode is directly to shine ultraviolet 64, and these loam cakes are a polymer protection layer.
Fig. 3 E, the process that one upper substrate 68 of one the second electrode lay 66 is combined with this infrabasal plate, wherein this upper substrate is to use glass substrate or plastic base, this the second electrode lay is to use inorganic conductive material or organic conductive material, and comprise active formula or passive type driving circuit, also comprise a heating and a ultrasonic oscillation step in the process of carrying out combination, liquid crystal and chiral dope are mixed.
In addition, hookup 3D, shown in Fig. 4 D, formation has the second electrode lay 66 of a plurality of conductive materials 70, this the second electrode lay is to use organic conductive material and inorganic conductive material, also can do the black absorption material simultaneously, this second electrode lay is to use wire mark method, ink-jet method, method of spin coating, immersed method, scrapes the skill in using a kitchen knife in cookery and print process making.
Among the first above-mentioned embodiment; this chiral dope can be added solvent; adjust the coating characteristics of chiral dope; then be sprayed on the infrabasal plate of this tool electrode layer; behind drying steps; coating of liquid crystalline and monomer macromolecule again; the utilization ultraviolet exposure first time is to form these barrier wall structures; carry out the exposure second time afterwards again to form these loam cake protective seams; the wave band of above-mentioned twice ultraviolet exposure can be difference; afterwards in conjunction with upper substrate with electrode layer; also realize combining with laminating type with this infrabasal plate for the upper substrate with the second electrode lay, wherein this integrating step can be direct pressing; add a glue material or realize, or use ink-jet by a ultraviolet exposure; wire mark; technology such as printing form second electrode; add that at last tempering step makes chiral dope mix with liquid crystal, this tempering step can be heating and ultrasonic oscillation method.
Wherein form in the step of second electrode at this, also comprising coating techniques such as ink-jet, wire mark, printing forms a plurality of conductive materials and covers on 70 in these, these conductive materials can be simultaneously as the black absorption material, when the spraying step is finished, can omit next cohesive process, remaining step is identical with first embodiment, and its complete structural representation is shown in Fig. 4 E, and this becomes simply for single layer structure and integral thinned and preparation process.
In addition, cholesterol liquid crystal can be divided into levorotation and right-hand helicity, when entering, outer light can reflect and derotation light can penetrate with revolving property light, so the highest reflectivity has only 50%, based on this principle, the present invention also proposes the structure of double-deck liquid crystal layer to increase reflectivity, chiral dope mixing is up and down avoided with a barrier layer in the centre, barrier layer is to form with ultraviolet exposure, carry out barrier layer of ultraviolet exposure formation after manufacturing ground floor left-handed (or dextrorotation) cholesteric liquid crystal layer as Fig. 4 A to Fig. 4 E earlier, manufacture the cholesteric liquid crystal layer of another revolving property afterwards again.Again, arrange its left dextrorotatory array mode to can be multiple pattern with the pixel of individual layer cholesterin liquid-crystal display, its array mode as earlier continuous three times left-handed after continuous again three dextrorotation or the like by that analogy, consequently can increase reflectivity.
If colourful cholesterin liquid-crystal display with the full-color practice of individual layer, is after cholesterol liquid crystal and the chiral dope mixing at present, is adjusted to the blue content that destroys chiral dope again via different exposures earlier, makes it to become green or redness, to reach full-color effect.The present invention adopts ink-jet method and twice ultraviolet exposure processing procedure means, because ink-jet method just can define zone to display, utilize ink-jet method that these liquid crystal are filled into the viewing area and just can demonstrate full-color effect, its chiral dope can be divided into left-handed and dextrorotation, as will reflect the optical wavelength of dextrorotation when adding the chiral dope of dextrorotation, and the ratio regular meeting that adds chiral dope reflects the wave band of reflection, the benefit of ink-jet method is injected into the viewing area to the thing that will inject then for controlling the location, and the present invention uses ultraviolet exposure technology making barrier wall structure can simplify technology and avoid colour mixture.
In the known technology as U.S. Pat 5,949, No. 513, wherein be to use the mode of traditional liquid crystal filling, yet the present invention is sprayed in the defined range with the cholesterol liquid crystal of ink-jet method with three kinds of colors, in preparation process, add the double exposure means again, to reach the individual layer colourful cholesterin liquid-crystal display.
The present invention really can borrow above-mentioned disclosed technology, provides a kind of far different in the design of known technology, can improve whole use value, and does not see publication or public use before the application, has really met the important document of patent of invention, and the whence proposes application for a patent for invention in accordance with the law.
Above-mentioned disclosed accompanying drawing, explanation only are embodiments of the invention, allly are skillful in this operator when can doing other all improvement according to above-mentioned explanation, and these change still belong to invention spirit of the present invention and below in the claim that defines.
Claims (20)
1. the manufacture method of a color cholesterol type LCD device, it comprises the following steps:
The a plurality of chiral dope of spraying on one first electrode layer of an infrabasal plate;
The cholesterol liquid crystal layer that mixes with the high polymer monomer material of coating one cholesterol liquid crystal on this first electrode layer, described cholesterol liquid crystal is the liquid crystal of a plurality of reflection different colours, and reflection wavelength between 400 to 800nm;
In this cholesterol liquid crystal layer, form a plurality of barrier wall structures and a plurality of loam cake; And
Carry out combining of a second electrode lay and this infrabasal plate.
2. the manufacture method of color cholesterol type LCD device as claimed in claim 1, it is characterized in that, this first electrode layer and this second electrode lay are to comprise active formula or passive type driving circuit, and this first electrode layer and this second electrode lay are to use inorganic conductive material or organic conductive material.
3. the manufacture method of color cholesterol type LCD device as claimed in claim 1 is characterized in that, the step of this spraying is to realize by an ink-jet method.
4. the manufacture method of color cholesterol type LCD device as claimed in claim 1 is characterized in that, chiral dope or reactive liquid crystals that described a plurality of chiral dope are different proportion.
5. the manufacture method of color cholesterol type LCD device as claimed in claim 1, it is characterized in that, this cholesterol liquid crystal is the composite material that adopts nematic crystal and chiral dope, also contain a pigment in this cholesterol liquid crystal, wherein be combined as multiple pattern between the cholesterol liquid crystal in this cholesterol liquid crystal layer.
6. the manufacture method of color cholesterol type LCD device as claimed in claim 1 is characterized in that, the step of this coating adopts wire mark method, ink-jet method, method of spin coating, immersed method, scrapes the skill in using a kitchen knife in cookery or print process.
7. the manufacture method of color cholesterol type LCD device as claimed in claim 1 is characterized in that, described barrier wall structure is to form in the ultraviolet exposure mode, and this ultraviolet exposure mode is to cooperate a light shield to realize by a ultraviolet light.
8. the manufacture method of color cholesterol type LCD device as claimed in claim 1 is characterized in that, described loam cake is a polymer protection layer and forms in a ultraviolet exposure mode.
9. the manufacture method of color cholesterol type LCD device as claimed in claim 1 is characterized in that, this method also comprises a tempering step, and cholesterol liquid crystal and chiral dope are mixed, and wherein this tempering step can be and heats and the ultrasonic oscillation method.
10. the manufacture method of color cholesterol type LCD device as claimed in claim 1, it is characterized in that, this the second electrode lay also comprises a upper substrate, in the integrating step of carrying out a second electrode lay and this infrabasal plate, also make the upper substrate of a second electrode lay and this infrabasal plate finish this integrating step with laminating type.
11. the manufacture method of color cholesterol type LCD device as claimed in claim 10 is characterized in that, this upper substrate and this infrabasal plate are to use glass substrate or plastic base.
12. the manufacture method of color cholesterol type LCD device as claimed in claim 1, it is characterized in that, in the integrating step of carrying out a second electrode lay and this infrabasal plate, also be included in and cover a plurality of conductive materials of spraying on described as the second electrode lay, described conductive material is the black absorption material, when spraying step when finishing, omit next integrating step and become the color cholesterol type LCD device of a monobasal structure.
13. the manufacture method of color cholesterol type LCD device as claimed in claim 1 is characterized in that, this integrating step is for adopting direct pressing, adding a glue material or realized by a ultraviolet exposure.
14. the manufacture method of color cholesterol type LCD device as claimed in claim 1, it is characterized in that, this method also is included on this infrabasal plate coating one and joins layer mutually, and this joins mutually that layer is to adopt polyvinyl alcohol (PVA), poly-industry acid amides, polyamide, nylon, silicon dioxide, little groove or lecithin.
15. a color cholesterol type LCD device, it comprises:
Infrabasal plate with one first electrode layer;
A plurality of barrier wall structures, it is distributed on this infrabasal plate;
A plurality of cholesterol liquid crystals, it is distributed between described barrier wall structure, described cholesterol liquid crystal is the liquid crystal of a plurality of reflection different colours, and reflection wavelength between 400 to 800nm;
A plurality of cap rocks of going up, it is distributed on the described cholesterol liquid crystal; And
One the second electrode lay, it is distributed in described going up on the cap rock.
16. color cholesterol type LCD device as claimed in claim 15, it is characterized in that, this LCD also comprises one and joins layer mutually, it is coated on this first electrode layer of this infrabasal plate, and this joins the phase layer is to adopt polyvinyl alcohol (PVA), pi, polyamide, nylon, silicon dioxide, little groove or lecithin.
17. color cholesterol type LCD device as claimed in claim 15 is characterized in that, this LCD also comprises a upper substrate, and it is formed on this second electrode lay.
18. color cholesterol type LCD device as claimed in claim 15, it is characterized in that, this first electrode layer and this second electrode lay are to use inorganic conductive material or organic conductive material, and when this second electrode lay was conductive material, described conductive material was the black absorption material.
19. color cholesterol type LCD device as claimed in claim 15 is characterized in that, described barrier wall structure is a macromolecular material, also contains a pigment in the described macromolecular material.
20. color cholesterol type LCD device as claimed in claim 15 is characterized in that, also contains a pigment in the described cholesterol liquid crystal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNB2005100545860A CN100401145C (en) | 2005-03-14 | 2005-03-14 | Color cholesterol type LCD device and its mfg. method |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005100545860A CN100401145C (en) | 2005-03-14 | 2005-03-14 | Color cholesterol type LCD device and its mfg. method |
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| CN1834736A CN1834736A (en) | 2006-09-20 |
| CN100401145C true CN100401145C (en) | 2008-07-09 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101308273A (en) * | 2007-05-18 | 2008-11-19 | 财团法人工业技术研究院 | Colourful cholesteryl LCD device and method of manufacture and LCD device |
| TWI419095B (en) | 2010-10-25 | 2013-12-11 | Au Optronics Corp | Display device |
| CN102122481B (en) * | 2010-11-01 | 2014-09-03 | 友达光电股份有限公司 | Display |
| CN102073178B (en) * | 2011-02-22 | 2013-04-24 | 华映视讯（吴江）有限公司 | Cholesterol liquid crystal display device |
| CN106990589B (en) * | 2017-05-12 | 2019-11-26 | 深圳市华星光电技术有限公司 | Liquid crystal display panel and liquid crystal display device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11337716A (en) * | 1998-05-21 | 1999-12-10 | Toppan Printing Co Ltd | Reflection type color filter and its production as well as liquid crystal display device |
| US6287647B1 (en) * | 1999-12-03 | 2001-09-11 | Minolta Co., Ltd. | Liquid crystal composition and liquid crystal display using the same |
| CN1366204A (en) * | 2001-01-17 | 2002-08-28 | 胜华科技股份有限公司 | Reflection-type coupled single-layer bistable color LCD |
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2005
- 2005-03-14 CN CNB2005100545860A patent/CN100401145C/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11337716A (en) * | 1998-05-21 | 1999-12-10 | Toppan Printing Co Ltd | Reflection type color filter and its production as well as liquid crystal display device |
| US6287647B1 (en) * | 1999-12-03 | 2001-09-11 | Minolta Co., Ltd. | Liquid crystal composition and liquid crystal display using the same |
| CN1366204A (en) * | 2001-01-17 | 2002-08-28 | 胜华科技股份有限公司 | Reflection-type coupled single-layer bistable color LCD |
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