CN107331690A - Organic electroluminescent display substrate and organic electroluminescence display device and method of manufacturing same - Google Patents
Organic electroluminescent display substrate and organic electroluminescence display device and method of manufacturing same Download PDFInfo
- Publication number
- CN107331690A CN107331690A CN201710710210.3A CN201710710210A CN107331690A CN 107331690 A CN107331690 A CN 107331690A CN 201710710210 A CN201710710210 A CN 201710710210A CN 107331690 A CN107331690 A CN 107331690A
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- organic electroluminescent
- electroluminescent display
- display substrate
- auxiliary electrode
- pixel separation
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/122—Pixel-defining structures or layers, e.g. banks
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/805—Electrodes
- H10K50/82—Cathodes
- H10K50/824—Cathodes combined with auxiliary electrodes
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The present invention provides a kind of organic electroluminescent display substrate and organic electroluminescence display device and method of manufacturing same, including substrate, pixel cell, sets and be used for the pixel separation body and auxiliary electrode that limit pixel cell over the substrate；Groove is provided with the top of the pixel separation body, for accommodating the auxiliary electrode.The present invention provides a kind of organic electroluminescent display substrate and display device by setting groove to be same as defining auxiliary electrode print area at the top of pixel separation body, the overflow risk of auxiliary electrode can effectively be avoided, simultaneously be easily obtained continuous silver wire auxiliary electrode, can improve screen inward flange apart from electrode interface immediate area and screen center's region luminous point driving voltage gap it is excessive produce pressure drop the problem of.
Description
Technical field
The present invention relates to display technology field, and in particular to a kind of organic electroluminescent display substrate and display device.
Background technology
Organic electroluminescent LED (Organi c Li ght-Emi t t i ng D i ode, OLED) is highlighted because of its
The advantages of degree, self-luminous, fast response and low driving voltage, it has also become the emerging technology of display field；In large scale OLED screen
Curtain direction, current main flow structure is bottom ray structure, and negative electrode uses thicker alkali metal, still, as user is to resolution ratio
It is required that more and more higher, and the OLED of bottom ray structure can be limited by aperture opening ratio, it is difficult to realize higher resolution ratio；Increasingly
Many producers will turn to the exploitation of top-illuminating OLED as possible, to expect to realize higher resolution ratio.
Top-illuminating OLED structure uses transparent conductive oxide or relatively thin semi-transparent metals as top cathode, relatively thin
The usual resistance of semitransparent cathode is higher；When display size is larger, in the luminous point of screen center, due to from electrode excuse compared with
Far, long range electric current transmission make its driving voltage rise it is larger, will cause screen inward flange distance interface immediate area and
The driving voltage gap of screen center's region luminous point is excessive, the problem of producing pressure drop；And rely on the electricity of thin film transistor (TFT) side
Design on road, it is difficult to effective to solve.
Auxiliary electrode can be printed by the pixel cell void area in transparent cathode at present, so as to improve asking for pressure drop
Topic, but auxiliary electrode is when printing to pixel separation body, if printing line width is narrower, disconnection phenomenon can occur for auxiliary electrode, it is impossible to
Effectively solve problem of pressure drop；If printing, line width is wider, can there is the risk overflowed in pixel.
The content of the invention
The present invention provides a kind of organic electroluminescent display substrate and organic electroluminescence display device and method of manufacturing same, can effectively keep away
Exempt from the overflow risk of auxiliary electrode, while being easily obtained continuous silver wire auxiliary electrode, the problem of pressure drop being improved.
The present invention provides a kind of organic electroluminescent display substrate, including substrate, pixel cell, setting are over the substrate
Pixel separation body and auxiliary electrode for limiting the pixel cell；
Groove is provided with the top of the pixel separation body, for accommodating the auxiliary electrode.
According to one embodiment of the invention, the pixel separation shape is halfpace, the pixel separation body of the landing shape
Height be 0.2~5um, inclination angle be 10 °~80 ° between.
According to one embodiment of the invention, the groove is located at the centre position of pixel separation body, the width ratio of the groove
Small 2~the 10um of pixel separation body top width.
According to one embodiment of the invention, the depth of the groove is 0.1~2um.
According to one embodiment of the invention, the pixel cell includes organic electroluminescent function element and metal anode；
Metal anode, array is arranged at the substrate surface；
Organic electroluminescent function element is arranged at the metal anode surface.
According to one embodiment of the invention, the groove is arranged between the pixel cell long axis direction space or is arranged on
Between the pixel cell short-axis direction space.
According to one embodiment of the invention, the pixel cell surrounding is brought into close contact with the pixel separation body avris.
According to one embodiment of the invention, the organic electroluminescent display substrate also includes transparent cathode, described transparent the moon
Pole is covered in the surface of the pixel separation body and the pixel cell, and is coupled with the metal anode.
According to one embodiment of the invention, the auxiliary electrode is arranged at the surface of the transparent cathode.
One kind top light-emitting organic electroluminescent display device, including any of the above-described described ORGANIC ELECTROLUMINESCENCE DISPLAYS base
Plate.
The present invention provides a kind of organic electroluminescent display substrate and organic electroluminescence display device and method of manufacturing same, by between pixel
The top of spacer sets groove to be same as defining auxiliary electrode print area, can effectively avoid the overflow risk of auxiliary electrode,
It is easily obtained continuous silver wire auxiliary electrode, the problem of pressure drop being improved simultaneously.
Brief description of the drawings
, below will be to embodiment or prior art in order to illustrate more clearly of embodiment or technical scheme of the prior art
The accompanying drawing used required in description is briefly described, it should be apparent that, drawings in the following description are only some of invention
Embodiment, for those of ordinary skill in the art, on the premise of not paying creative work, can also be attached according to these
Figure obtains other accompanying drawings.
Fig. 1 is the structural representation of the organic electroluminescent display substrate of the embodiment of the present invention；
Fig. 2 is the overlooking the structure diagram of the organic electroluminescent display substrate of the embodiment of the present invention.
Fig. 3 is the another structural representation of the organic electroluminescent display substrate of the embodiment of the present invention.
Embodiment
The explanation of following embodiment is the particular implementation implemented to illustrate the present invention can be used to reference to additional diagram
Example.The direction term that the present invention is previously mentioned, such as [on], [under], [preceding], [rear], [left side], [right side], [interior], [outer], [side]
Deng being only the direction with reference to annexed drawings.Therefore, the direction term used is to illustrate and understand the present invention, and is not used to
The limitation present invention.In figure, the similar unit of structure is represented to identical label.
The present invention is described further with specific embodiment below in conjunction with the accompanying drawings：
As shown in figure 1, a kind of organic electroluminescent display substrate 1, including substrate 101, pixel cell 102, it is arranged on institute
Stating is used for the pixel separation body 103 and auxiliary electrode 105 that limit pixel cell 102 on substrate 101；
The top of pixel separation body 103 is provided with groove 104, for accommodating the auxiliary electrode 105.
Substrate 101 in the embodiment of the present invention is the substrate 101 before forming pixel separation body 103, and it can be substrate
Substrate can also form the structure that multiple films or layer are obtained on underlay substrate (for example, glass, silicon chip, quartz etc.).
Pixel separation body 103 is shaped as halfpace, and the height of the pixel separation body 103 of the landing shape is 0.2~
5um, the inclination angle on two bases is between 10 °~80 °, specifically because actual conditions are adjusted.
As described in Figure 3, pixel cell 102 is spaced apart with pixel separation body 103.
Pixel cell 102 is made up of metal anode 1021 and organic luminescence function device 1022, and the pixel cell 102 is again
Red pixel cell, green pixel and blue pixel cells can be subdivided into, the pixel cell of three kinds of different colours is alternately distributed.
Metal anode 1021, is arranged at the surface of the substrate 101；
Organic electroluminescent function element, is arranged at the surface of metal anode 1021.
Organic electroluminescent function element 1022 can include：Hole injection layer, hole transmission layer, organic luminous layer, electricity
Sub- implanted layer, electron transfer layer etc..
It is common, in order to avoid the colour mixture problem of the pixel cell 102 of different colours, according to embodiments of the present invention, in tool
Have in the organic electroluminescent display substrate 1 of pixel separation body 103, the top of pixel separation body 103 is formed as lyophobicity, to having
The solution of the material of organic electro luminescent function element 1022 has repellency；And the bottom of the pixel separation body 103 is formed as parent
Fluidity, has attractability to the solution of electroluminescent organic material；Between the pixel using upper and lower part with different wellabilities
Spacer 103, when the material of organic electroluminescent function element 1022 falls on the top with lyophobicity, the repulsive interaction meeting of the two
So that the material of droplet-like organic electroluminescent function element 1022 easily slides back the picture of corresponding color automatically towards substrate direction
In plain unit 102, without flowing in the pixel cell 102 of other adjacent colors.Therefore adjacent different colours can be avoided
The problem of 1022 material colour mixture of organic electroluminescent function element of pixel cell 102.
It is worth noting that, the upper and lower part of pixel separation body 103 refers to different two of pixel isolation body wellability
Part, for example, top is lyophobicity and bottom is lyophily.
Auxiliary electrode 105 is printed with the top channel 104 of pixel separation body 103, the groove 104 is used to define Organic Electricity
The print area of auxiliary electrode 105 in photoluminescence display base plate 1, so that the problem of avoiding auxiliary electrode narrower or be wider.
Organic electroluminescent display substrate 1 also includes transparent cathode 106, and transparent cathode 106 is arranged at the organic electroluminescence
The top of luminescence display substrate 1；Transparent cathode 106 is prepared using transparent conductive oxide or relatively thin semi-transparent metals.
Auxiliary electrode 105 is nano-silver thread auxiliary electrode, and the nano-silver thread auxiliary electrode is layed in the table of transparent cathode 106
Face, can effectively improve the conductance of transparent cathode 106, so as to avoid the generation of pressure drop phenomena.
Groove 104 is located at the crown center position of pixel separation body 103, and width is smaller by 2 than the top width of pixel separation body 103
~10um, depth is 0.1~2um, and the top of auxiliary electrode 105 will not protrude from the groove 104.
Groove 104 can either be provided separately between pixel cell long axis direction space, can also be provided separately within pixel
Between the space of cell short axis direction；As shown in Figure 2, moreover it is possible to which groove 104 is all set between pixel cell major and minor axis space.
Organic electroluminescent display substrate 1 in the present invention is generally used for pushing up light-emitting organic electroluminescent display device,
Under the energization action of metal anode 1021 and transparent cathode 106, organic electroluminescent function element 1022 emits beam, the light
Line passes through transparent cathode 106, and from top, luminous organic electroluminescence display screen is projected.
A kind of organic electroluminescence display device and method of manufacturing same, the organic electroluminescence display device and method of manufacturing same includes described organic electroluminescence and sent out
Light display base plate 1.
The organic electroluminescence display device and method of manufacturing same can be evaporation organic electroluminescence display device and method of manufacturing same；The evaporation Organic Electricity
Photoluminescence display device can define the print area of silver paste, it is easy to shape by setting groove 104 on pixel separation body 103
Into continuous electrode, for improving problem of pressure drop.
Organic electroluminescence display device and method of manufacturing same 1022 can also be inkjet printing organic electroluminescence display device and method of manufacturing same；Picture now
Plain interval body 103 is that, with certain hydrophobic fluorine material, can be used for printing technology, layers of material is printed into pixel list
Member 102, is finally deposited transparent cathode 106；Transparent cathode 106 can be covered in the groove 104 of pixel separation body 103 simultaneously；
Silver paste is printed in groove 104, silver wire auxiliary electrode 105 is formed, is connect by silver wire auxiliary electrode 105 with the electrode of transparent cathode 1022
Touch, can effectively improve problem of pressure drop.
The present invention, can be effective by setting groove to be same as defining auxiliary electrode print area at the top of pixel separation body
Avoid the overflow risk of auxiliary electrode, while being easily obtained continuous silver wire auxiliary electrode, screen inward flange distance can be improved
Electrode interface immediate area and the driving voltage gap of screen center's region luminous point it is excessive produce pressure drop the problem of.
In summary, although the present invention it is disclosed above with preferred embodiment, but above preferred embodiment and be not used to limit
The system present invention, one of ordinary skill in the art without departing from the spirit and scope of the present invention, can make various changes and profit
Adorn, therefore protection scope of the present invention is defined by the scope that claim is defined.
Claims (10)
1. a kind of organic electroluminescent display substrate, it is characterised in that the organic electroluminescent display substrate include substrate, as
Plain unit, setting are used for the pixel separation body and auxiliary electrode for limiting the pixel cell over the substrate；
Groove is provided with the top of the pixel separation body, for accommodating the auxiliary electrode.
2. organic electroluminescent display substrate according to claim 1, it is characterised in that the pixel separation shape is
Halfpace, the height of the pixel separation body of the landing shape is 0.2~5um, and inclination angle is between 10 °~80 °.
3. organic electroluminescent display substrate according to claim 1, it is characterised in that the groove is located at pixel separation
The centre position of body, the width of the groove is than the small 2~10um of pixel separation body top width.
4. organic electroluminescent display substrate according to claim 1, it is characterised in that the depth of the groove is 0.1~
2um。
5. organic electroluminescent display substrate according to claim 1, it is characterised in that the pixel cell surrounding and institute
Pixel separation body avris is stated to be brought into close contact.
6. organic electroluminescent display substrate according to claim 1, it is characterised in that the groove is arranged on the picture
Between plain unit long axis direction space or it is arranged between the pixel cell short-axis direction space.
7. organic electroluminescent display substrate according to claim 1, it is characterised in that the pixel cell includes organic
Electroluminescent function element and metal anode；
Metal anode, array is arranged at the substrate surface；
Organic electroluminescent function element, is arranged at the metal anode surface.
8. organic electroluminescent display substrate according to claim 7, it is characterised in that the ORGANIC ELECTROLUMINESCENCE DISPLAYS
Substrate also includes transparent cathode, and the transparent cathode is covered in the surface of the pixel separation body and the pixel cell, and with
The metal anode coupling.
9. organic electroluminescent display substrate according to claim 8, it is characterised in that the auxiliary electrode is arranged at institute
State the surface of transparent cathode.
10. a kind of organic electroluminescence display device and method of manufacturing same, it is characterised in that the organic electroluminescence display device and method of manufacturing same will including right
Seek any described organic electroluminescent display substrates of 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710710210.3A CN107331690A (en) | 2017-08-18 | 2017-08-18 | Organic electroluminescent display substrate and organic electroluminescence display device and method of manufacturing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710710210.3A CN107331690A (en) | 2017-08-18 | 2017-08-18 | Organic electroluminescent display substrate and organic electroluminescence display device and method of manufacturing same |
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| CN107331690A true CN107331690A (en) | 2017-11-07 |
Family
ID=60224052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710710210.3A Pending CN107331690A (en) | 2017-08-18 | 2017-08-18 | Organic electroluminescent display substrate and organic electroluminescence display device and method of manufacturing same |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108511502A (en) * | 2018-05-11 | 2018-09-07 | 京东方科技集团股份有限公司 | A kind of array substrate, the preparation method of display panel, display device and array substrate |
| CN109817694A (en) * | 2019-03-26 | 2019-05-28 | 京东方科技集团股份有限公司 | Organic light emitting display panel and production method, display device |
| CN109830512A (en) * | 2019-01-30 | 2019-05-31 | 合肥鑫晟光电科技有限公司 | Display base plate, the preparation method of display base plate, display device |
| CN110212114A (en) * | 2019-06-03 | 2019-09-06 | 京东方科技集团股份有限公司 | Display base plate, display panel and preparation method thereof and display device |
| CN110224010A (en) * | 2019-06-13 | 2019-09-10 | 京东方科技集团股份有限公司 | The preparation method of oled display substrate, display panel, oled display substrate |
| CN110224005A (en) * | 2019-05-10 | 2019-09-10 | 深圳市华星光电半导体显示技术有限公司 | Display and preparation method thereof |
| CN110707128A (en) * | 2019-09-03 | 2020-01-17 | 武汉华星光电半导体显示技术有限公司 | OLED display panel and preparation method thereof |
| WO2020224070A1 (en) * | 2019-05-05 | 2020-11-12 | 深圳市华星光电半导体显示技术有限公司 | Oled display panel |
| WO2020253489A1 (en) * | 2019-06-21 | 2020-12-24 | 京东方科技集团股份有限公司 | Display substrate, display device and method for manufacturing display substrate |
| CN112420943A (en) * | 2020-11-09 | 2021-02-26 | 深圳市华星光电半导体显示技术有限公司 | Display panel and manufacturing method thereof |
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|---|---|---|---|---|
| CN108511502A (en) * | 2018-05-11 | 2018-09-07 | 京东方科技集团股份有限公司 | A kind of array substrate, the preparation method of display panel, display device and array substrate |
| US11239293B2 (en) | 2018-05-11 | 2022-02-01 | Boe Technology Group Co., Ltd. | Array substrate, display panel, display device and method for preparing array substrate |
| CN109830512A (en) * | 2019-01-30 | 2019-05-31 | 合肥鑫晟光电科技有限公司 | Display base plate, the preparation method of display base plate, display device |
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| WO2020224070A1 (en) * | 2019-05-05 | 2020-11-12 | 深圳市华星光电半导体显示技术有限公司 | Oled display panel |
| CN110224005A (en) * | 2019-05-10 | 2019-09-10 | 深圳市华星光电半导体显示技术有限公司 | Display and preparation method thereof |
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| CN110212114A (en) * | 2019-06-03 | 2019-09-06 | 京东方科技集团股份有限公司 | Display base plate, display panel and preparation method thereof and display device |
| US12082436B2 (en) | 2019-06-03 | 2024-09-03 | Boe Technology Group Co., Ltd. | Display substrate having auxiliary electrodes, display panel having auxiliary electrodes, and manufacturing method of said display panel and display device having auxiliary electrodes |
| WO2020244488A1 (en) * | 2019-06-03 | 2020-12-10 | 京东方科技集团股份有限公司 | Display substrate, display panel, preparation method for display panel, and display device |
| CN110224010A (en) * | 2019-06-13 | 2019-09-10 | 京东方科技集团股份有限公司 | The preparation method of oled display substrate, display panel, oled display substrate |
| US11889707B2 (en) | 2019-06-13 | 2024-01-30 | Boe Technology Group Co., Ltd. | Organic light-emitting diode display substrate and manufacturing method thereof, and display panel |
| WO2020253489A1 (en) * | 2019-06-21 | 2020-12-24 | 京东方科技集团股份有限公司 | Display substrate, display device and method for manufacturing display substrate |
| WO2021042498A1 (en) * | 2019-09-03 | 2021-03-11 | 武汉华星光电半导体显示技术有限公司 | Oled display panel and manufacturing method therefor |
| CN110707128A (en) * | 2019-09-03 | 2020-01-17 | 武汉华星光电半导体显示技术有限公司 | OLED display panel and preparation method thereof |
| CN112420943A (en) * | 2020-11-09 | 2021-02-26 | 深圳市华星光电半导体显示技术有限公司 | Display panel and manufacturing method thereof |
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Application publication date: 20171107 |