CN106057862B - High-brightness OLED display - Google Patents
High-brightness OLED display Download PDFInfo
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- CN106057862B CN106057862B CN201610649428.8A CN201610649428A CN106057862B CN 106057862 B CN106057862 B CN 106057862B CN 201610649428 A CN201610649428 A CN 201610649428A CN 106057862 B CN106057862 B CN 106057862B
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- 239000010410 layer Substances 0.000 claims abstract description 116
- 239000000463 material Substances 0.000 claims abstract description 40
- 239000000758 substrate Substances 0.000 claims abstract description 18
- 239000011229 interlayer Substances 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 5
- 239000011159 matrix material Substances 0.000 claims abstract description 4
- 230000000903 blocking effect Effects 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 claims description 3
- 230000005525 hole transport Effects 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 229920000642 polymer Polymers 0.000 claims description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 230000007547 defect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 229920001621 AMOLED Polymers 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
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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
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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
- H10K59/80—Constructional details
- H10K59/805—Electrodes
- H10K59/8051—Anodes
- H10K59/80517—Multilayers, e.g. transparent multilayers
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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
- H10K59/80—Constructional details
- H10K59/805—Electrodes
- H10K59/8052—Cathodes
- H10K59/80523—Multilayers, e.g. opaque multilayers
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- Electroluminescent Light Sources (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
A high-brightness OLED display relates to the technical field of OLED displays and solves the technical defect of low display brightness of the traditional OLED display, and the high-brightness OLED display comprises a substrate and display pixels which are arranged on the substrate in a matrix manner, wherein each display pixel at least comprises a pixel main body formed by an anode, a cathode and a luminescent material layer clamped between the anode and the cathode; the method is characterized in that: the anode and the cathode are transparent electrodes, the anode and/or the cathode comprises more than two layers of sub-electrode layers, the cathode sub-electrode layer is arranged in an interlayer between two adjacent anode sub-electrode layers, and the luminescent material layer is arranged in an interlayer between the adjacent anode sub-electrode layers and the cathode sub-electrode layer. The area of the luminescent material can be increased in a limited occupied area, and the luminescent brightness of the unit area is obviously improved; the space utilization rate is improved, the luminous current can be reduced, the power consumption is reduced, and the service life of the luminous material is prolonged under the same brightness requirement.
Description
Technical Field
The invention relates to the technical field of OLED displays, in particular to the improvement of a pixel main body structure of an OLED display.
Background
The flat panel display technology has been rapidly developed in recent years and is widely used in mobile phones, computers, industrial instruments, home appliances, and the like. Among them, the OLED display technology has the advantages of fast response, active light emission, wide viewing angle, high contrast, good stability and shock resistance, etc., and is considered as the best alternative technology for the next-generation high-performance display. Although the development is rapid, the OLED also faces some difficulties, especially relatively low luminous efficiency, resulting in low display brightness.
Referring to fig. 1, in the conventional OLED display, each sub-pixel is formed of a sandwich structure of a light emitting material and electrodes, and the light emitting material is tiled in a single layer, so that the space utilization is not high, and thus the light emitting brightness is limited.
Disclosure of Invention
In summary, the present invention aims to solve the technical disadvantage of the existing OLED display that the display brightness is low, and provides a high-brightness OLED display.
In order to solve the technical problems, the invention adopts the following technical scheme: a high-brightness OLED display comprises a substrate and display pixels arranged on the substrate in a matrix manner, wherein each display pixel at least comprises a pixel main body composed of an anode, a cathode and a luminescent material layer sandwiched between the anode and the cathode; the method is characterized in that: the anode and the cathode are transparent electrodes, the anode and/or the cathode comprises more than two layers of sub-electrode layers, the cathode sub-electrode layer is arranged in an interlayer between two adjacent anode sub-electrode layers, and the luminescent material layer is arranged in an interlayer between the adjacent anode sub-electrode layers and the cathode sub-electrode layer.
The technical scheme adopted as the further improvement of the invention is as follows:
the edges of the two adjacent luminescent material layers are connected, and the cross section of each luminescent material layer is in a serpentine structure which is wound around the interlayer between each anode sub-electrode layer and each cathode sub-electrode layer.
The substrate is a transparent substrate.
An insulating layer is arranged between the substrate and the pixel main bodies, and a TFT driving circuit for driving the pixel main bodies is arranged at a position corresponding to each pixel main body in the insulating layer.
One layer or more than two layers of electron injection layer, electron transport layer and hole blocking layer are also included between the luminescent material layer and the cathode sub-electrode layer; one layer or more than two layers of hole injection layer, hole transport layer and electron blocking layer are also included between the luminescent material layer and the anode sub-electrode layer.
The luminescent material layer adopts a small molecular luminescent material or a high molecular polymer luminescent material or a mixture of the two.
The beneficial effects of the invention are as follows: the pixel main body adopts the multi-layer sub-electrode instead of the traditional single-layer electrode, so that the area of the luminescent material can be increased in a limited occupied area, and the luminescent brightness of the unit area is obviously improved; the space utilization rate is improved, the luminous current can be reduced, the power consumption is reduced, and the service life of the luminous material is prolonged under the same brightness requirement.
Drawings
FIG. 1 is a schematic diagram of a conventional OLED display;
FIG. 2 is a schematic diagram of a PMOLED display according to the present invention, wherein two anode sub-electrode layers and one cathode sub-electrode layer are used;
FIG. 3 is a schematic diagram of a PMOLED display according to the present invention, wherein two anode sub-electrode layers and two cathode sub-electrode layers are used;
FIG. 4 is a schematic diagram of an AMOLED display according to the present invention.
Detailed Description
The structure of the present invention will be further described with reference to the accompanying drawings and preferred embodiments of the present invention.
Referring to fig. 2, the high-brightness OLED display of the present invention includes a substrate 1 and display pixels arranged in a matrix on the substrate, each of the display pixels including at least one pixel body composed of an anode 21, a cathode 22, and a light emitting material layer 23 sandwiched between the anode 21 and the cathode 22; for color OLED displays, each display pixel typically includes three pixel bodies for displaying three colors, red, green, and blue, respectively.
The anode 21 and the cathode 22 are transparent electrodes, the anode 21 comprises two anode sub-electrode layers, the cathode 22 comprises a cathode sub-electrode layer, the cathode sub-electrode layer is arranged between the two anode sub-electrode layers, and a luminescent material layer is arranged in an interlayer between the cathode sub-electrode layer and the two anode sub-electrode layers. The anode sub-electrode layer, the light-emitting material layer, and the cathode sub-electrode layer may be formed on the substrate 1 by conventional vapor deposition methods or by liquid phase methods such as spin coating or printing.
Referring to fig. 3, the anode 21 includes two anode sub-electrode layers, the cathode 22 also includes two cathode sub-electrode layers, each anode sub-electrode layer is alternately arranged with each cathode sub-electrode layer, and a light emitting material layer 23 is disposed in an interlayer between adjacent anode sub-electrode layers and cathode sub-electrode layers.
The edges of the two adjacent luminescent material layers 23 are connected, and the cross section of each luminescent material layer is in a serpentine structure which is wound around the interlayer between each anode sub-electrode layer and each cathode sub-electrode layer. Namely, the adjacent anode sub-electrode layers and the adjacent cathode sub-electrode layers are isolated by the luminescent material. The luminescent material layer adopts a small molecular luminescent material or a high molecular polymer luminescent material or a mixture of the two. One or more than two layers of electron injection layer, electron transport layer and hole blocking layer are also included between the luminescent material layer and the cathode sub-electrode layer according to the requirement; one layer or more than two layers of hole injection layer, hole transport layer and electron blocking layer are also included between the luminescent material layer and the anode sub-electrode layer.
Because the anode and the cathode are transparent electrodes, the substrate 1 adopts a transparent substrate, and the technical effect of the full transparent display can be realized.
According to the principle of fig. 2 and 3, it is possible to realize that the anode or the cathode comprises more than two sub-electrode layers, or that the anode and the cathode each comprise more than two sub-electrode layers, and that two different sub-electrode layers are stacked alternately, and that the two different sub-electrode layers are separated by the luminescent material layer. In the limited opening space, a larger area of luminescent material can be tiled, so that the luminescent brightness of the pixel main body can be improved by several times.
Referring to fig. 4, an insulating layer 3 is provided between a substrate 1 and pixel bodies, and a TFT driving circuit 4 for driving the pixel bodies is provided in the insulating layer 3 at a position corresponding to each pixel body; that is, the present invention is applicable not only to the above-mentioned PMOLED display but also to an AMOLED display, in which a TFT driving circuit is added to each sub-pixel.
Claims (2)
1. A high-brightness OLED display comprises a substrate and display pixels arranged on the substrate in a matrix manner, wherein each display pixel at least comprises a pixel main body composed of an anode, a cathode and a luminescent material layer sandwiched between the anode and the cathode; the method is characterized in that: the anode and the cathode are transparent electrodes, the anode and/or the cathode comprises more than two layers of sub-electrode layers, a cathode sub-electrode layer is arranged in an interlayer between two adjacent anode sub-electrode layers, and a luminescent material layer is arranged in an interlayer between the adjacent anode sub-electrode layers and the cathode sub-electrode layers;
the edges of two adjacent luminescent material layers are connected, and the section of each luminescent material layer is in a serpentine structure which surrounds the interlayer between each anode sub-electrode layer and each cathode sub-electrode layer;
an insulating layer is arranged between the substrate and the pixel main bodies, and a TFT driving circuit for driving the pixel main bodies is arranged at the position corresponding to each pixel main body in the insulating layer;
one layer or more than two layers of electron injection layer, electron transport layer and hole blocking layer are also included between the luminescent material layer and the cathode sub-electrode layer; one layer or more than two layers of hole injection layer, hole transport layer and electron blocking layer are also included between the luminescent material layer and the anode sub-electrode layer;
the substrate is a transparent substrate.
2. The high brightness OLED display of claim 1 wherein: the luminescent material layer adopts a small molecular luminescent material or a high molecular polymer luminescent material or a mixture of the two.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610649428.8A CN106057862B (en) | 2016-08-10 | 2016-08-10 | High-brightness OLED display |
| PCT/CN2016/108318 WO2018028098A1 (en) | 2016-08-10 | 2016-12-02 | High-brightness oled display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610649428.8A CN106057862B (en) | 2016-08-10 | 2016-08-10 | High-brightness OLED display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106057862A CN106057862A (en) | 2016-10-26 |
| CN106057862B true CN106057862B (en) | 2023-05-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610649428.8A Active CN106057862B (en) | 2016-08-10 | 2016-08-10 | High-brightness OLED display |
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| Country | Link |
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| CN (1) | CN106057862B (en) |
| WO (1) | WO2018028098A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106057862B (en) * | 2016-08-10 | 2023-05-09 | 深圳市国显科技有限公司 | High-brightness OLED display |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016033884A1 (en) * | 2014-09-05 | 2016-03-10 | 京东方科技集团股份有限公司 | Organic light-emitting diode display device and manufacturing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003257662A (en) * | 2002-03-04 | 2003-09-12 | Sanyo Electric Co Ltd | Electroluminescence display device and its manufacturing method |
| US7903055B2 (en) * | 2004-04-30 | 2011-03-08 | Sanyo Electric Co., Ltd. | Light-emitting display |
| JP4797438B2 (en) * | 2005-05-17 | 2011-10-19 | ソニー株式会社 | Organic electroluminescence device and display device |
| GB2437113B (en) * | 2006-04-12 | 2008-11-26 | Cambridge Display Tech Ltd | Light-emissive display and method of manufacturing the same |
| KR100959107B1 (en) * | 2008-08-28 | 2010-05-25 | 삼성모바일디스플레이주식회사 | Organic light emitting diode display |
| TWI612689B (en) * | 2013-04-15 | 2018-01-21 | 半導體能源研究所股份有限公司 | Light-emitting device |
| CN103296221B (en) * | 2013-06-08 | 2016-07-13 | 广州创维平面显示科技有限公司 | A kind of common electrode laminated organic electroluminescent device |
| CN205984990U (en) * | 2016-08-10 | 2017-02-22 | 深圳市国显科技有限公司 | Hi -lite OLED display |
| CN106057862B (en) * | 2016-08-10 | 2023-05-09 | 深圳市国显科技有限公司 | High-brightness OLED display |
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2016
- 2016-08-10 CN CN201610649428.8A patent/CN106057862B/en active Active
- 2016-12-02 WO PCT/CN2016/108318 patent/WO2018028098A1/en active Application Filing
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016033884A1 (en) * | 2014-09-05 | 2016-03-10 | 京东方科技集团股份有限公司 | Organic light-emitting diode display device and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106057862A (en) | 2016-10-26 |
| WO2018028098A1 (en) | 2018-02-15 |
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