CN101163358B - Display device - Google Patents

Display device Download PDF

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Publication number
CN101163358B
CN101163358B CN2007101773242A CN200710177324A CN101163358B CN 101163358 B CN101163358 B CN 101163358B CN 2007101773242 A CN2007101773242 A CN 2007101773242A CN 200710177324 A CN200710177324 A CN 200710177324A CN 101163358 B CN101163358 B CN 101163358B
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China
Prior art keywords
oled
display device
oled display
luminescent
substrate
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Expired - Fee Related
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CN2007101773242A
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Chinese (zh)
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CN101163358A (en
Inventor
邱勇
刘嵩
谢静
高裕弟
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Tsinghua University
Beijing Visionox Technology Co Ltd
Kunshan Visionox Display Co Ltd
Original Assignee
Tsinghua University
Beijing Visionox Technology Co Ltd
Kunshan Visionox Display Co Ltd
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Application filed by Tsinghua University, Beijing Visionox Technology Co Ltd, Kunshan Visionox Display Co Ltd filed Critical Tsinghua University
Priority to CN2007101773242A priority Critical patent/CN101163358B/en
Publication of CN101163358A publication Critical patent/CN101163358A/en
Application granted granted Critical
Publication of CN101163358B publication Critical patent/CN101163358B/en
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Abstract

The invention relates to a display device, comprising an OLED display part and at least an OLED luminescent part, wherein, the OLED luminescent part is overlapped on one side of the OLED display part which emits light and is used as a backlight source of the OLED display part; wherein, the OLED display part comprises a base plate, a first electrode, an organic functional layer and a second electrode which are formed on the base plate orderly, wherein, at least one of the base plate and the first electrode which is adjacent to the base plate has the light reflecting function, and the second electrode is a transparent electrode; the OLED luminescent part comprises a transparent base plate and a first transparent electrode, an organic functional layer and a second transparent electrode which are formed on the base plate orderly, wherein, the second transparent electrode is near one side of the OLED luminescent part which emits light, and the base plate of the OLED display part is used as a sealing piece of the OLED luminescent part, and the base plate of the OLED luminescent part is used as the sealing piece of the OLED display part.

Description

A kind of display unit
Technical field
The present invention relates to the organic electroluminescent field, relate in particular to a kind of organic electroluminescence display device and method of manufacturing same that improves special display effect.
Background technology
OLED is a kind of self light-emitting display device, comprises a transparent cathode, organic function layer and a reflecting electrode.Because the existence of reflecting electrode, display unit significantly reduces in the stronger local readability of surround lighting, and then causes showing that contrast descends; For increasing the contrast of display unit; Can increase antiglare film in the display screen surface, but the increase of antiglare film can cause the brightness of display unit to reduce, antiglare film makes the screen body present black in addition; When showing, give the sensation of a kind of sudden change of people, make the observer when reading displaying contents, be easy to generate visual fatigue.
The applicant discloses a kind of lamination Organnic electroluminescent device in application number is 200610144291.7 patent application; Be that first organic electroluminescence device and at least one second organic electroluminescence device are superposeed according to ad hoc fashion; And electrode material and luminescent material selected the OLED light-emitting device that obtains, this device can increase amount of light and improve luminous intensity, can realize multiple color simultaneously; Has the colourity adjustability; And do not need independent encapsulation between the different luminescent devices, encapsulate each other, simplified preparation technology through substrate.
According to the structural design of this lamination light-emitting device, can realize improving the lamination display unit that shows contrast and readability on this basis.
Technical scheme
The object of the present invention is to provide a kind of raising display brightness and contrast, increase the euphorosia degree, and the simple OLED display unit of preparation technology.
Above-mentioned purpose of the present invention is achieved through following technical scheme:
A kind of display unit comprises OLED display device and at least one OLED luminescent device, and what wherein the OLED luminescent device was superimposed upon the OLED display device sends light one side, and as the backlight of OLED display device.
In above-mentioned display unit; The OLED display device comprises substrate and is formed on first electrode, organic function layer and second electrode on the substrate successively; At least one of them has the light reflection function to first electrode that wherein substrate and substrate are adjacent, and second electrode is a transparency electrode; The OLED luminescent device comprises transparency carrier and is formed on first transparency electrode, organic function layer and second transparency electrode on the transparency carrier successively, and wherein second transparency electrode is sent light one side near the OLED display device.
In above-mentioned display unit, the substrate of OLED display device is as the case chip of OLED luminescent device, and the substrate of OLED luminescent device is as the case chip of OLED display device, and the two encapsulates each other.
In above-mentioned display unit, the OLED display device is a blue-light device, and at least one OLED luminescent device is the gold-tinted device.
In above-mentioned display unit, the OLED display device is the gold-tinted device, and said at least one OLED luminescent device is a blue-light device.
In above-mentioned display unit; The OLED luminescent device comprises first luminescent device and second luminescent device; Be superimposed upon the both sides of said OLED display device respectively; Wherein the OLED display device comprises on it spaced top ballistic device and end ballistic device of position, penetrates after the optical superposition that makes light that the OLED display device sends send with first luminescent device and second luminescent device of both sides respectively.
In above-mentioned display unit, first luminescent device and second luminescent device are blue-light device, and the OLED display device is the gold-tinted device.
In above-mentioned display unit, first luminescent device and second luminescent device are the gold-tinted device, and the OLED display device is a blue-light device.
In above-mentioned display unit, the top ballistic device comprises substrate, transparent anode, reflector, organic function layer and transparent cathode successively, and end ballistic device comprises substrate, transparent anode, organic function layer and reflective cathode successively.
In above-mentioned display unit, the substrate of OLED display device is as the case chip of first luminescent device and second luminescent device, and the substrate of first luminescent device or second luminescent device is as the case chip of said OLED display device
In above-mentioned display unit, be connected through packaging plastic between the substrate of OLED display device and OLED luminescent device, realize encapsulation to display unit.
The present invention is through adopting technique scheme; OLED display device and at least one OLED luminescent device are superposeed according to ad hoc fashion; And electrode material and luminescent layer material selected; Thereby obtained having the OLED display unit of improving display effect, when simplifying preparation technology, through improving the display unit that device architecture has also obtained realizing double-sided display.
Description of drawings
Fig. 1 the present invention realizes the OLED display device structure figure that wrongly written or mispronounced character of the blue end shows
111 OLED gold-tinted display device substrates, 112 OLED gold-tinted display device reflection anode, 113 OLED gold-tinted display device transparent cathodes; 114 OLED gold-tinted display device organic function layers, 115 OLED gold-tinted display device insulated columns, 121 OLED blue light emitting device substrates; 122 OLED blue light emitting device transparent anodes, 123 OLED blue light emitting device transparent cathodes, 124 OLED blue light emitting device organic function layers; 01 drier, 02 packaging plastic
Fig. 2 the present invention realizes the OLED display device structure figure that wrongly written or mispronounced character of the yellow end shows
211 OLED blue light display device substrates, 212 OLED blue light display device reflection anode, 213 OLED blue light display device transparent cathodes; 214 OLED blue light display device organic function layers, 215 OLED blue light display device insulated columns, 221 OLED Yellow light emitting device substrates; 222 OLED Yellow light emitting device transparent anodes, 223 OLED Yellow light emitting device transparent cathodes, 224 OLED Yellow light emitting device organic function layers; 01 drier, 02 packaging plastic
Fig. 3 the present invention realizes the OLED display device structure figure of wrongly written or mispronounced character double-sided display of the blue end
311 OLED gold-tinted display device substrates, 312 OLED gold-tinted display device transparent anodes, 313 OLED gold-tinted display device organic function layers (end emission pixel); 314 OLED gold-tinted display device reflective cathode (end emission pixel), 315 OLED gold-tinted display device reflector (top emission pixel), 316 OLED gold-tinted display device organic function layers (top emission pixel); 317 OLED gold-tinted display device transparent cathodes, 318 OLED gold-tinted display device insulated columns, 321 OLED, the first blue light emitting device substrate, 322 OLED, the first blue light emitting device transparent anode; 323 OLED, the first blue light emitting device transparent cathode; 324 OLED, the first blue light emitting device organic function layer, 331 OLED, the second blue light emitting device substrate, 332 OLED, the second blue light emitting device transparent anode; 333 OLED, the second blue light emitting device transparent cathode; 334 OLED, the second blue light emitting device organic function layer, 01 drier, 02 packaging plastic
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is done further detailed description.
Embodiment 1
The present invention of being as shown in Figure 1 realizes the OLED display device structure figure that wrongly written or mispronounced character of the blue end shows, this display unit comprises the OLED gold-tinted display device and the OLED blue light emitting device of relative stack, and wherein OLED gold-tinted display device comprises substrate 111; The reflection anode 112 that is arranged in order on the substrate 111; Transparent cathode 113, organic function layer 114 and insulated column 115, OLED blue light emitting device comprises substrate 121; The transparent anode 122 that is arranged in order on the substrate 121, transparent cathode 123 and organic function layer 124; Be connected through packaging plastic 02 between OLED gold-tinted display device and the blue light emitting device, wherein the substrate 111 of gold-tinted display device is as the case chip of blue light emitting device, and the substrate 121 of blue light emitting device is as the case chip of gold-tinted display device; The two encapsulates each other, is provided with drier 01 in display unit inside simultaneously.
Anode 122, the negative electrode 123 of blue light emitting device are transparency electrode, and light sends from both sides, and the light that sends from negative electrode 123 1 sides passes the gold-tinted display device; And, send from direction shown in Fig. 1 arrow, thereby obtain the blue light that brightness significantly strengthens with the optical superposition that opposite side sends through the reflection of reflection anode 112; Produce white light after the optical superposition that light that each pixel of gold-tinted display device sends and blue light emitting device send, send, can realize that wrongly written or mispronounced character shows from direction shown in Fig. 1 arrow; Because reflex; Make blue light background colour and wrongly written or mispronounced character brightness all obtain bigger enhancing, when having improved display effect and readability, also increased the demonstration contrast, two devices encapsulate through substrate each other in addition; Save the step of using case chip to encapsulate, when practicing thrift manufacturing cost, also simplified technology.
This display unit can also show monochromatic pattern as required except showing Chinese character.
Embodiment 2
Fig. 2 is that the present invention realizes the OLED display device structure figure that wrongly written or mispronounced character of the yellow end shows; Be in the present embodiment display unit with the difference part of embodiment 1; Display device is a blue-light device; Luminescent device is the gold-tinted device, and the wrongly written or mispronounced character display effect of the yellow end that display brightness and contrast all strengthen is realized in two device stack backs.
Embodiment 3
The present invention of being as shown in Figure 3 realizes the OLED display device structure figure of wrongly written or mispronounced character double-sided display of the blue end; This display unit is made up of gold-tinted display device and two blue light emitting devices; Wherein first, second two blue-light devices lay respectively at gold-tinted display device both sides, three's composition double-side display device that superposes.Be provided with transparent anode 312, end emission pixel on the gold-tinted display device transparency carrier 311 successively and push up organic function layer and the negative electrode that the emission pixel is alternately arranged, wherein on end emission organic function layer 313, be provided with reflective cathode 314, make device send light by the bottom; Spaced top emission organic function layer 316 is provided with transparent cathode 317; And also be provided with reflector 315 between luminescent layer 316 and the anode 312, make device send light, on the anode 312 insulated column 318 is arranged in addition by the top; The both sides of gold-tinted display device superpose the respectively first blue light emitting device and the second blue light emitting device; The first blue light emitting device comprises substrate 321, the transparent anode 322 that is arranged in order, transparent cathode 323; Organic function layer 324; The second blue light emitting device comprises substrate 331, transparent anode 332, transparent cathode 333 and organic function layer 334, and first, second blue light emitting device is end emission, and the light that send at the top is penetrated by the bottom through the reflection change direction in reflective cathode 314 or reflector 315; Shown in Fig. 3 arrow; Thereby strengthened the luminosity of blue light, the light that while gold-tinted display device top emission pixel and end emission pixel are alternately sent sends white light respectively after both sides and blue light stack, thereby the effect of wrongly written or mispronounced character double-sided display of the blue end of realization.
Be connected through packaging plastic 02 between gold-tinted display device and first, second blue light emitting device; Device inside is provided with drier 01; Wherein the substrate 321 of the first blue light emitting device is as the case chip of gold-tinted display device, and 311 case chips as two blue light emitting devices of the substrate of gold-tinted display device encapsulate each other; Save independent encapsulation step, simplified technology.
The device architecture design of present embodiment makes the double-side display device of wrongly written or mispronounced character of the blue end have the display effect that improves contrast and brightness, has strengthened readability, also can realize the demonstration of white pattern of the blue end in addition as required.
Embodiment 4
In like manner, when display device is the gold-tinted device, when first, second luminescent device is blue-light device, can obtain the double-side display device of wrongly written or mispronounced character of the yellow end, its device architecture and principle are with embodiment 3.

Claims (8)

1. display unit; Comprise OLED display device and at least one OLED luminescent device, what wherein the OLED luminescent device was superimposed upon the OLED display device sends light one side, and as the backlight of OLED display device; Said display device also comprises insulated column; The substrate of said OLED display device is as the case chip of OLED luminescent device, and the substrate of said OLED luminescent device is as the case chip of OLED display device
Said OLED display device comprises substrate and is formed on first electrode, organic function layer and second electrode on the substrate successively, and one of them has the light reflection function to first electrode that wherein substrate and substrate are adjacent at least, and second electrode is a transparency electrode; Said OLED luminescent device comprises transparency carrier and is formed on first transparency electrode, organic function layer and second transparency electrode on the transparency carrier successively, and wherein second transparency electrode is sent light one side near said OLED display device.
2. according to the display unit of claim 1, it is characterized in that said OLED display device is a blue-light device, said at least one OLED luminescent device is the gold-tinted device.
3. according to the display unit of claim 1, it is characterized in that said OLED display device is the gold-tinted device, said at least one OLED luminescent device is a blue-light device.
4. display unit; Comprise OLED display device and at least one OLED luminescent device; What wherein the OLED luminescent device was superimposed upon the OLED display device sends light one side, and as the backlight of OLED display device, said display device also comprises insulated column; The substrate of said OLED display device is as the case chip of OLED luminescent device; The substrate of said OLED luminescent device is as the case chip of OLED display device, and said OLED luminescent device comprises first luminescent device and second luminescent device, is superimposed upon the both sides of said OLED display device respectively; Wherein the OLED display device comprises on it spaced top ballistic device and end ballistic device of position, penetrates after the optical superposition that makes light that the OLED display device sends send with first luminescent device and second luminescent device of both sides respectively.
5. according to the display unit of claim 4; It is characterized in that said top ballistic device comprises substrate, transparent anode, reflector, organic function layer and transparent cathode successively, ballistic device of the said end comprises substrate, transparent anode, organic function layer and reflective cathode successively.
6. according to the display unit of claim 4 or 5, it is characterized in that said first luminescent device and second luminescent device are blue-light device, said OLED display device is the gold-tinted device.
7. according to the display unit of claim 4 or 5, it is characterized in that said first luminescent device and second luminescent device are the gold-tinted device, said OLED display device is a blue-light device.
8. according to the display unit of claim 4 or 5; It is characterized in that the case chip of the substrate of said OLED display device as first luminescent device and second luminescent device, the substrate of said first luminescent device or second luminescent device is as the case chip of OLED display device.
CN2007101773242A 2007-11-14 2007-11-14 Display device Expired - Fee Related CN101163358B (en)

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CN102073860A (en) * 2010-12-06 2011-05-25 清华大学 Optical fingerprint acquisition device, optical fingerprint identification system and method
FR2985379B1 (en) * 2011-12-30 2014-01-24 Saint Gobain OLED DEVICE WITH REAR EMISSION
CN103337593A (en) * 2013-04-09 2013-10-02 南京第壹有机光电有限公司 Organic electroluminescent panel
CN104183744A (en) * 2013-05-21 2014-12-03 海洋王照明科技股份有限公司 Organic electroluminescent device and preparing method thereof
US9691835B2 (en) 2013-12-24 2017-06-27 Boe Technology Group Co., Ltd. Double-face display panel
CN105789239A (en) * 2014-12-15 2016-07-20 北京维信诺科技有限公司 Double-sided light emitting device for OLED display screen and preparation method
CN105206652B (en) * 2015-10-14 2018-09-07 京东方科技集团股份有限公司 Sealant, display panel and display device
CN105810714B (en) 2016-03-16 2019-03-15 武汉华星光电技术有限公司 OLED display and preparation method thereof with double-sided display
CN108922910A (en) * 2018-07-26 2018-11-30 深圳创维-Rgb电子有限公司 OLED mould group, display panel and display
CN109300968B (en) * 2018-11-22 2022-05-20 合肥鑫晟光电科技有限公司 Display substrate, display device and display control method
CN110120404B (en) * 2019-04-18 2021-04-27 深圳市华星光电半导体显示技术有限公司 Double-sided white organic light emitting diode display device and manufacturing method thereof
CN110265433B (en) * 2019-05-07 2021-07-06 信利半导体有限公司 Pen section type OLED display substrate and display module

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CN1964042A (en) * 2006-12-01 2007-05-16 清华大学 A luminescent device and its manufacture method

Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
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CN1964042A (en) * 2006-12-01 2007-05-16 清华大学 A luminescent device and its manufacture method

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