CN110611046B - Double-sided display panel - Google Patents
Double-sided display panel Download PDFInfo
- Publication number
- CN110611046B CN110611046B CN201910805404.0A CN201910805404A CN110611046B CN 110611046 B CN110611046 B CN 110611046B CN 201910805404 A CN201910805404 A CN 201910805404A CN 110611046 B CN110611046 B CN 110611046B
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- layer
- pixel
- transparent film
- film layer
- metal anode
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- 229910052751 metal Inorganic materials 0.000 claims abstract description 75
- 239000002184 metal Substances 0.000 claims abstract description 75
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 19
- 229910052709 silver Inorganic materials 0.000 claims description 19
- 239000004332 silver Substances 0.000 claims description 19
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 claims description 14
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 12
- 229910052749 magnesium Inorganic materials 0.000 claims description 12
- 239000011777 magnesium Substances 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 10
- 239000000758 substrate Substances 0.000 claims description 10
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 5
- 229920001621 AMOLED Polymers 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 239000003086 colorant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- 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
- H10K50/81—Anodes
-
- 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
- H10K50/828—Transparent cathodes, e.g. comprising thin metal layers
-
- 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
Abstract
The invention relates to the technical field of double-sided display panels, in particular to a double-sided display panel, wherein a metal anode layer and a metal cathode layer are arranged into transparent film layers, so that light rays generated by an organic light-emitting layer can respectively penetrate through the metal anode layer and the metal cathode layer to be emitted, the panel can realize a double-sided light-emitting function, and double-sided display of the panel is realized; the display panel designed by the scheme can obviously reduce energy consumption and improve panel screen brightness and contrast.
Description
Technical Field
The invention relates to the technical field of double-sided display panels, in particular to a double-sided display panel.
Background
Active-matrix organic light emitting diode (AMOLED) technology has the technical advantages of high brightness, high contrast, high color saturation and the like, and has become a standard configuration of high-end mobile phones and high-end television products in the current consumer electronics field; with the continuous expansion of the application of the commercial display field at the present stage, the double-sided display technology has been gradually accepted and applied, and also gradually shows a plurality of possibilities in the commercial display field; the currently implemented double-sided display technology is based on a liquid crystal display (Liquid Crystal Display, abbreviated as LCD) technology, and is implemented by fixing an LCD panel on each side of a backlight, but the overall power consumption is relatively large, the thickness of the whole machine is relatively large, and the brightness and contrast ratio of the double-sided display technology are relatively different from those of AMOLED.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: provided is a display panel capable of realizing double-sided light emission.
In order to solve the technical problems, the invention adopts the following technical scheme:
the double-sided display panel comprises a pixel structure, wherein the pixel structure comprises more than two pixel unit groups with the same structure, and the more than two pixel unit groups are distributed in an array;
each pixel unit group comprises more than two pixel units, each pixel unit comprises a TFT device and a main pixel, and the TFT device is electrically connected with the main pixel;
the main pixel comprises a substrate, and a metal anode layer, an organic light-emitting layer and a metal cathode layer are sequentially laminated on the surface of the substrate;
the metal anode layer and the metal cathode layer are transparent film layers.
The invention has the beneficial effects that:
the metal anode layer and the metal cathode layer are arranged to be transparent film layers, so that light generated by the organic light-emitting layer can penetrate through the metal anode layer and the metal cathode layer respectively and be emitted, the panel can realize a double-sided light-emitting function, and double-sided display of the panel is realized.
Drawings
Fig. 1 is a schematic structural view of a pixel structure of a dual display panel according to the present invention;
fig. 2 is a schematic diagram of a main pixel of a dual-sided display panel according to the present invention;
FIG. 3 is a schematic view showing the structure of a light path of a dual-sided display panel according to the present invention;
FIG. 4 is a schematic view showing the structure of a light path of a dual-sided display panel according to the present invention;
description of the reference numerals:
1. a pixel unit group;
2. a pixel unit;
3. a TFT device;
4. a main pixel; 401. a substrate; 402. a metal anode layer; 403. an organic light emitting layer; 404. a metal cathode layer;
5. a sub-pixel.
Detailed Description
In order to describe the technical contents, the achieved objects and effects of the present invention in detail, the following description will be made with reference to the embodiments in conjunction with the accompanying drawings.
Referring to fig. 1, the present invention provides the following technical solutions:
the double-sided display panel comprises a pixel structure, wherein the pixel structure comprises more than two pixel unit groups with the same structure, and the more than two pixel unit groups are distributed in an array;
each pixel unit group comprises more than two pixel units, each pixel unit comprises a TFT device and a main pixel, and the TFT device is electrically connected with the main pixel;
the main pixel comprises a substrate, and a metal anode layer, an organic light-emitting layer and a metal cathode layer are sequentially laminated on the surface of the substrate;
the metal anode layer and the metal cathode layer are transparent film layers.
From the above description, the beneficial effects of the invention are as follows:
the metal anode layer and the metal cathode layer are arranged to be transparent film layers, so that light generated by the organic light-emitting layer can penetrate through the metal anode layer and the metal cathode layer respectively and be emitted, the panel can realize a double-sided light-emitting function, and double-sided display of the panel is realized.
Further, the metal anode layer comprises a first transparent film layer, a second transparent film layer and a third transparent film layer are sequentially laminated on the surface of the first transparent film layer, the first transparent film layer and the third transparent film layer are made of indium tin oxide, the second transparent film layer is made of silver, the thicknesses of the first transparent film layer and the third transparent film layer are 0.15 mu m, and the thickness of the second transparent film layer is 0.15-0.2 mu m.
As can be seen from the above description, the metal anode layer is configured as three structural film layers, since the indium tin oxide is a transparent conductive film, the metal anode layer has good conductivity and transparency, the first transparent film layer and the third transparent film layer are made of indium tin oxide, the light transmittance of the metal anode layer can be improved, the second transparent film layer is made of silver, the metal anode layer is opaque when the thickness of the silver film layer is thicker, the silver film layer can be changed into the transparent film layer when the thickness of the silver film layer is controlled to be 0.15-0.2 μm, the light generated by the organic light-emitting layer can penetrate through the second transparent film layer, the light transmittance efficiency of the metal anode layer is ensured, and the hole injection efficiency of the metal anode layer is improved.
Further, the material of the metal anode layer is indium tin oxide, and the thickness of the metal anode layer is 0.55 mu m.
As can be seen from the above description, since indium tin oxide is a semiconductor transparent conductive film having excellent conductivity and transparency, the material of the metal anode layer is indium tin oxide, and the thickness of the metal anode layer is set to 0.55 μm, not only can the light transmission efficiency of the metal anode layer be improved, but also the thickness of the double-sided display panel can be effectively reduced.
Further, the pixel unit further comprises a sub-pixel, wherein the sub-pixel is electrically connected with the TFT device and is arranged to display white light.
As can be seen from the above description, when the metal anode layer is transparent, only a very small portion of light rays of the metal anode layer are reflected, but most of light rays of the metal anode layer are not reflected, so that the display brightness of the display panel is halved to be one half of the original brightness due to that the light rays generated by the organic light-emitting layer penetrate through the metal anode layer and the metal cathode layer respectively, and the sub-pixels are electrically connected with the TFT device by arranging the sub-pixels in each pixel unit, so that the sub-pixels display white light, and the display brightness of the single-side screen of the panel can be improved without sacrificing the display resolution of the panel.
Further, the TFT device is electrically connected to the main pixel and the sub-pixel through wires, and the wires are made of indium tin oxide.
As can be seen from the above description, the display brightness of the panel screen can be further improved by using the indium tin oxide wire.
Further, the metal cathode layer is made of magnesium and silver materials together, and the proportion of magnesium to silver is 1:9, the thickness of the metal cathode layer is 0.15 μm.
As can be seen from the above description, the metal cathode layer is made of magnesium and silver materials together and the ratio of magnesium to silver is 1:9, not only can the light transmission efficiency of the metal cathode layer be improved, but also the thickness of the double-sided display panel is effectively reduced.
Referring to fig. 1 to 4, a first embodiment of the present invention is as follows:
referring to fig. 1, a dual-sided display panel includes a pixel structure, wherein the pixel structure includes more than two pixel units 2 groups 1 with the same structure, and more than two pixel units 2 groups 1 are distributed in an array;
each pixel unit 2 group 1 comprises three pixel units 2, each pixel unit 2 comprises a TFT device 3 and a main pixel 4, the main pixels 4 of each pixel unit 2 in the same pixel unit 2 group 1 are different, namely a B pixel displaying blue, a G pixel displaying green and an R pixel displaying red, and the TFT devices 3 are electrically connected with the main pixels 4; since the TFT device 3 and the main pixel 4 are not in the same structural layer, a through hole is formed in the structural layer between the TFT device 3 and the main pixel 4, and the TFT device 3 and the main pixel 4 can be connected through a wire by the through hole; the grid electrode of each TFT device 3 of the same pixel unit 2 group 1 is correspondingly connected with a scanning line, and one scanning line is correspondingly connected with a plurality of TFT devices 3 of different pixel unit 2 groups 1;
referring to fig. 3, the main pixel 4 includes a substrate 401, and a metal anode layer 402, an organic light emitting layer 403 and a metal cathode layer 404 are sequentially stacked on the surface of the substrate 401;
the metal anode layer 402 and the metal cathode layer 404 are transparent film layers.
The metal anode layer 402 includes a first transparent film layer, on the surface of which a second transparent film layer and a third transparent film layer are sequentially laminated, the materials of the first transparent film layer and the third transparent film layer are indium tin oxide, the materials of the second transparent film layer are silver, the thicknesses of the first transparent film layer and the third transparent film layer are 0.15 μm, and the thickness of the second transparent film layer is 0.15-0.2 μm, preferably 0.175 μm.
The pixel unit 2 further comprises a sub-pixel 5, the sub-pixel 5 being electrically connected to the TFT device 3 and the sub-pixel 5 being arranged to display white light; the size of the sub-pixels 5 is the same as the size of the main pixels 4, the main pixels 4 differ from the sub-pixels 5 in the respective displayed colors.
The TFT device 3 is electrically connected with the main pixel 4 and the sub-pixel 5 respectively through wires, and the wires are made of indium tin oxide.
The metal cathode layer 404 is made of magnesium and silver materials together, and the ratio of magnesium to silver is 1:9, the thickness of the metal cathode layer 404 is 0.15 μm.
In the process of manufacturing the metal cathode layer 404, two evaporating crucibles respectively filled with two materials of magnesium and silver are placed in a crucible device, magnesium and silver in the evaporating crucibles respectively form magnesium gas and silver gas with a ratio of 1:9, and the magnesium gas and the silver gas are plated on the surface of the organic light-emitting layer 403 to form the metal cathode layer 404.
The luminous principle of the double-sided display panel is as follows:
the lowermost substrate 401 is used for injecting holes into the organic light-emitting layer 403 through the metal anode layer 402, injecting electrons into the organic light-emitting layer 403 through the metal cathode layer 404 simultaneously, and releasing photons to emit light after the organic light-emitting layer 403 is recombined.
Referring to fig. 3, the light path of the conventional display panel is that the light incident on the surface of the metal anode layer 402 is reflected due to the light-tightness of the metal anode layer 402, and the emitted light is emitted through the metal cathode layer 404, and finally recognized by a person.
Referring to fig. 4, the light paths of the display panel of the present embodiment are transparent film layers for the metal anode layer 402 and the metal cathode layer 404, at this time, light can be emitted from both sides of the display panel at the same time, and only a very small portion of the light of the metal anode layer 402 is reflected, while a very large portion of the light is not reflected.
Referring to fig. 2, a second embodiment of the present invention is as follows:
the second embodiment differs from the first embodiment in that: the material of the metal anode layer 402 is indium tin oxide, and the thickness of the metal anode layer 402 is 0.55 μm.
In summary, according to the double-sided display panel provided by the invention, the metal anode layer and the metal cathode layer are arranged to be transparent film layers, so that light generated by the organic light-emitting layer can respectively penetrate through the metal anode layer and the metal cathode layer to be emitted, the double-sided light-emitting function of the panel can be realized, and double-sided display of the panel is realized; the display panel designed by the scheme can obviously reduce energy consumption and improve panel screen brightness and contrast.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent changes made by the specification and drawings of the present invention, or direct or indirect application in the relevant art, are included in the scope of the present invention.
Claims (2)
1. The double-sided display panel is characterized by comprising a pixel structure, wherein the pixel structure comprises more than two pixel unit groups with the same structure, and the more than two pixel unit groups are distributed in an array;
each pixel unit group comprises more than two pixel units, each pixel unit comprises a TFT device and a main pixel, and the TFT device is electrically connected with the main pixel;
the main pixel comprises a substrate, and a metal anode layer, an organic light-emitting layer and a metal cathode layer are sequentially laminated on the surface of the substrate;
the metal anode layer and the metal cathode layer are transparent film layers;
the metal anode layer comprises a first transparent film layer, a second transparent film layer and a third transparent film layer are sequentially laminated on the surface of the first transparent film layer, the first transparent film layer and the third transparent film layer are made of indium tin oxide, the second transparent film layer is made of silver, the thicknesses of the first transparent film layer and the third transparent film layer are 0.15 mu m, and the thickness of the second transparent film layer is 0.15-0.2 mu m;
the metal anode layer is made of indium tin oxide, and the thickness of the metal anode layer is 0.55 mu m;
the pixel unit further comprises a sub-pixel, wherein the sub-pixel is electrically connected with the TFT device and is set to display white light;
the metal cathode layer is made of magnesium and silver materials together, and the proportion of magnesium to silver is 1:9, the thickness of the metal cathode layer is 0.15 μm.
2. The dual-sided display panel of claim 1, wherein the TFT device is electrically connected to the main pixel and the sub-pixel through wires, respectively, and the wires are made of indium tin oxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910805404.0A CN110611046B (en) | 2019-08-29 | 2019-08-29 | Double-sided display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910805404.0A CN110611046B (en) | 2019-08-29 | 2019-08-29 | Double-sided display panel |
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| Publication Number | Publication Date |
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| CN110611046A CN110611046A (en) | 2019-12-24 |
| CN110611046B true CN110611046B (en) | 2024-04-16 |
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| CN201910805404.0A Active CN110611046B (en) | 2019-08-29 | 2019-08-29 | Double-sided display panel |
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| CN211062744U (en) * | 2019-08-29 | 2020-07-21 | 福建华佳彩有限公司 | Double-sided display panel |
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| US7514861B2 (en) * | 2005-11-24 | 2009-04-07 | Chunghwa Picture Tubes, Ltd. | Organic electro-luminescent device |
| CN107316880A (en) * | 2016-04-27 | 2017-11-03 | 中华映管股份有限公司 | The preparation method of the dot structure of organic LED display panel |
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| JP2004103247A (en) * | 2002-09-04 | 2004-04-02 | Sony Corp | Organic el display device |
| WO2009104148A1 (en) * | 2008-02-22 | 2009-08-27 | Philips Intellectual Property & Standards Gmbh | Double sided organic light emitting diode (oled) |
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