CN112992990A - Display panel, display device and manufacturing method of display panel - Google Patents
Display panel, display device and manufacturing method of display panel Download PDFInfo
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- CN112992990A CN112992990A CN202110107963.1A CN202110107963A CN112992990A CN 112992990 A CN112992990 A CN 112992990A CN 202110107963 A CN202110107963 A CN 202110107963A CN 112992990 A CN112992990 A CN 112992990A
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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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- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/84—Passivation; Containers; Encapsulations
- H10K50/846—Passivation; Containers; Encapsulations comprising getter material or desiccants
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- H—ELECTRICITY
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Abstract
The display panel comprises a functional layer and an organic light-emitting layer, wherein the functional layer is provided with a plurality of openings, the organic light-emitting layer is provided with a plurality of light-emitting units, the organic light-emitting layer covers the functional layer and enables each light-emitting unit to be accommodated in the corresponding opening, the functional layer comprises pixel limiting materials and water absorbing materials, and the water absorbing materials are used for absorbing water molecules generated by condensation reaction of the pixel limiting materials. Through setting up the functional layer that has pixel limited material and water absorbing material, the functional layer has good dielectric constant and insulating nature simultaneously, and water absorbing material can absorb the produced hydrone of pixel limited material condensation reaction to prevent that water molecule from diffusing to organic luminescent layer and damaging the luminescence unit, is favorable to promoting display effect.
Description
Technical Field
The invention belongs to the technical field of display, and particularly relates to a display panel, a display device and a manufacturing method of the display panel.
Background
An Organic Light Emitting Diode (OLED) display panel is a new display panel on the market. Since the OLED display panel has a self-luminous characteristic, the OLED display panel has many advantages such as a wide color gamut, a high contrast, and an ultra-light and thin structure, compared to the liquid crystal display panel.
In the OLED display panel structure, a Pixel Define Layer (PDL) is used to limit a light emitting range, and thus a material property requirement for the PDL is high. In order to improve dielectric constant of PDL and improve material insulation, a current PDL material is generally a pixel defining material such as polyimide. After the material is polymerized, intramolecular condensation reaction is easy to occur under the high-temperature condition to release water molecules (H)2O)，H2O can permeate and damage the structure of the OLED device, and the display effect is influenced.
Disclosure of Invention
The invention aims to provide a display panel, a display device and a manufacturing method of the display panel, which can absorb water molecules generated by condensation reaction of a pixel limiting material to prevent water molecules from diffusing to an organic light-emitting layer to damage a light-emitting unit and influence the display effect.
In order to realize the purpose of the invention, the invention provides the following technical scheme:
in a first aspect, the present invention provides a display panel, which includes a functional layer and an organic light emitting layer, wherein the functional layer has a plurality of openings, the organic light emitting layer has a plurality of light emitting units, the organic light emitting layer covers the functional layer and enables each light emitting unit to be accommodated in the corresponding opening, and the functional layer includes pixel defining materials and water absorbing materials, and the water absorbing materials are used for absorbing water molecules generated by condensation reaction of the pixel defining materials.
Through setting up the functional layer that has pixel limited material and water absorbing material, the functional layer has good dielectric constant and insulating nature simultaneously, and water absorbing material can absorb the produced hydrone of pixel limited material condensation reaction to prevent that water molecule from diffusing to organic luminescent layer and damaging the luminescence unit, is favorable to promoting display effect.
In one embodiment, the water absorbing material comprises fullerene. It can be understood that the fullerene has better water absorption performance, and the fullerene can be kept stable at higher temperature after water molecules are absorbed by the fullerene, so that water molecules can be effectively prevented from permeating into the light-emitting unit. Meanwhile, the fullerene absorbs less in the emission ranges of red light, green light and blue light, and the luminous performance is not influenced.
In one embodiment, the fullerene comprises C20、C60、C70、C72、C76、C84And C100One or more of (a).
In one embodiment, the pixel defining material is doped with the water absorbing material to form the functional layer. The functional layer is formed by doping the water absorption material in the pixel limiting material, the water absorption material is uniformly distributed in the functional layer, and when the pixel limiting material generates condensation reaction to generate water molecules, the water absorption material nearby can absorb the water molecules at the first time, so that the water molecules are prevented from leaving the functional layer. Meanwhile, the process is simple, an additional film layer is not needed, and the thickness and the manufacturing cost of the display panel are favorably reduced.
In one embodiment, the functional layer includes a pixel defining layer formed of the pixel defining material and a water absorbing layer formed of the water absorbing material, which are stacked, and the water absorbing layer is provided between the pixel defining layer and the organic light emitting layer. Through set up the layer that absorbs water between pixel limited layer and organic light emitting layer, when the hydrone that pixel limited layer condensation reaction produced was towards organic light emitting layer diffusion, the hydrone can be limited the layer and is absorbed by the layer that absorbs water at the interface of layer and the layer that absorbs water at the pixel to can't reach organic light emitting layer through the layer that absorbs water, reduced the risk that the display element is destroyed by the hydrone, be favorable to improving luminous performance.
In one embodiment, the display panel includes a planarization layer and a plurality of electrodes formed between the planarization layer and the light emitting layer, and each of the openings exposes a corresponding one of the electrodes. By providing the planarization layer and the plurality of electrodes, it is advantageous to ensure the flatness of the display panel and the good electrical reliability of the light emitting unit.
In one embodiment, the display panel further includes a cathode, a first deposition layer, a flatness compensation layer, and a second deposition layer sequentially stacked on a side of the organic light emitting layer facing away from the functional layer. It can be understood that the cathode can cooperate with the electrode on the other side to provide a voltage for the light emitting unit, so that the light emitting unit can emit light smoothly. The first deposition layer, the flatness compensation layer and the second deposition layer can improve the flatness degree of the display panel and can protect the internal light-emitting unit and other devices.
In a second aspect, the present invention further provides a display device, which includes the display panel described in any one of the embodiments of the first aspect. By adding the display panel provided by the invention into the display device, the display device has good display performance and longer service life because the display panel can prevent water molecules generated by condensation reaction of the pixel limiting material from damaging the light-emitting unit.
In a third aspect, the present invention further provides a manufacturing method of a display panel, where the manufacturing method includes: forming a functional layer having a pixel defining material and a water absorbing material and having a plurality of openings; and forming an organic light-emitting layer with a plurality of light-emitting units on the functional layer, and enabling each light-emitting unit to be accommodated in the corresponding opening. Through setting up the functional layer that has pixel limited material and water absorbing material, the functional layer has good dielectric constant and insulating nature simultaneously, and water absorbing material can absorb the produced hydrone of pixel limited material condensation reaction to prevent that water molecule from diffusing to organic luminescent layer and damaging the luminescence unit, is favorable to promoting display effect.
In one embodiment, the water absorbing material comprises fullerene. It can be understood that the fullerene has better water absorption performance, and the fullerene can be kept stable at higher temperature after water molecules are absorbed by the fullerene, so that water molecules can be effectively prevented from permeating into the light-emitting unit. Meanwhile, the fullerene absorbs less in the emission ranges of red light, green light and blue light, and the luminous performance is not influenced.
In one embodiment, the fullerene comprises C20、C60、C70、C72、C76、C84And C100One or more of (a).
In one embodiment, the forming a functional layer having a pixel defining material and a water absorbing material and having a plurality of openings includes: forming a pixel defining layer using the pixel defining material; and forming a water absorbing layer between the pixel defining layer and the organic light emitting layer using the water absorbing material. Through set up the layer that absorbs water between pixel limited layer and organic light emitting layer, when the hydrone that pixel limited layer condensation reaction produced was towards organic light emitting layer diffusion, the hydrone can be limited the layer and is absorbed by the layer that absorbs water at the interface of layer and the layer that absorbs water at the pixel to can't reach organic light emitting layer through the layer that absorbs water, reduced the risk that the display element is destroyed by the hydrone, be favorable to improving luminous performance.
In one embodiment, the forming a functional layer having a pixel defining material and a water absorbing material and having a plurality of openings includes: doping the water-absorbing material into the pixel defining material to form the functional layer. The functional layer is formed by doping the water absorption material in the pixel limiting material, the water absorption material is uniformly distributed in the functional layer, and when the pixel limiting material generates condensation reaction to generate water molecules, the water absorption material nearby can absorb the water molecules at the first time, so that the water molecules are prevented from leaving the functional layer. Meanwhile, the process is simple, an additional film layer is not needed, and the thickness and the manufacturing cost of the display panel are favorably reduced.
In one embodiment, the forming an organic light emitting layer having a plurality of light emitting units on the functional layer and each of the light emitting units being received after the corresponding opening includes: and sequentially forming a cathode, a first deposition layer, a flat compensation layer and a second deposition layer on one side of the organic light-emitting layer, which faces away from the functional layer. It can be understood that the cathode can cooperate with the electrode on the other side to provide a voltage for the light emitting unit, so that the light emitting unit can emit light smoothly. The first deposition layer, the flatness compensation layer and the second deposition layer can improve the flatness degree of the display panel and can protect the internal light-emitting unit and other devices.
In one embodiment, the forming a functional layer having a pixel defining material and a water absorbing material and having a plurality of openings in the functional layer comprises: providing a planarization layer; a plurality of electrodes is formed on the planarization layer. By forming the planarization layer and the plurality of electrodes, it is advantageous to ensure the flatness of the display panel and the good electrical reliability of the light emitting unit.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a display panel according to another embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a display panel according to yet another embodiment of the present invention;
fig. 4 is a flowchart illustrating a method for manufacturing a display panel according to an embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Referring to fig. 1, an embodiment of the present invention provides a display panel 100, where the display panel 100 can be applied to an electronic device with a display function, such as a smart phone, a tablet computer, a personal digital assistant, and a display screen. The display panel 100 includes a functional layer 10 and an organic light emitting layer 20. The functional layer 10 has a plurality of openings 101, and the organic light-emitting layer 20 has a plurality of light-emitting units 21. The organic light emitting layer 20 covers the functional layer 10 and allows each light emitting unit 21 to be accommodated in the corresponding opening 101. The functional layer 10 comprises, as constituents, a pixel defining material and a water absorbing material for absorbing water molecules generated by condensation reactions of the pixel defining material.
Specifically, the pixel defining material is preferably a polyimide-based material having a relatively good dielectric constant and insulating property. It is understood that when holes and electrons are recombined in the light emitting unit 21 to generate heat, and the heat is accumulated and radiated to the functional layer 10, intramolecular condensation reaction occurs in the pixel defining material in the functional layer 10 to generate water molecules, which are diffused to the surrounding film layers, and if the water molecules are diffused into the light emitting unit 21, the structure of the light emitting unit 21 is damaged, thereby affecting the display effect.
By providing the functional layer 10 with the pixel defining material and the water absorbing material, the functional layer 10 has good dielectric constant and insulation property, and meanwhile, the water absorbing material can absorb water molecules generated by condensation reaction of the pixel defining material, so that the water molecules are prevented from diffusing to the organic light emitting layer 20 to damage the light emitting unit 21, and the display effect is favorably improved.
In one embodiment, referring to fig. 1, the water absorbing material comprises fullerene. It can be understood that the fullerene has a better water absorption performance, and the fullerene can be kept stable at a higher temperature after water molecules are adsorbed, so that water molecules can be effectively prevented from permeating into the light emitting unit 21. Meanwhile, the fullerene absorbs less in the emission ranges of red light, green light and blue light, and the luminous performance is not influenced.
In one embodiment, referring to FIG. 1, the fullerene comprises C20、C60、C70、C72、C76、C84And C100One or more of (a). Specifically, the water-absorbing material may include a plurality of fullerenes having different numbers of carbon atoms, for example, the water-absorbing material includes C60And C70The water-absorbing material may include only C60. The fullerene is preferably C60Also known as football alkene, C60The material has larger holes, can adsorb water molecules and firmly locate the water molecules in the film, and simultaneously,C60contains 60 carbon atoms, has perfect symmetry, belongs to a highly symmetrical Ih point group, and all 60 carbon atoms are all equivalent. Since 60 atoms can share the external pressure, C60The molecules are very stable and strong, their melting point is above 700 ℃ so that C60Can be kept stable at 700 ℃ and at 650 ℃ even after absorbing water, and does not affect the subsequent processes of the functional layer 10 (e.g., the processes of the light-emitting layer 20, etc.). In addition, C60The three characteristic absorption peaks that can be obtained are located at 219nm, 260nm and 339nm, respectively, and thus there is substantially no absorption in the red, green and blue light emission ranges, i.e., there is substantially no absorption of light generated by the light emitting unit 21, and there is little influence on the display effect.
In one embodiment, referring to FIG. 1, the pixel defining material is doped with a water absorbing material to form the functional layer 10. By doping the water-absorbing material in the pixel limiting material to form the functional layer 10, the water-absorbing material is distributed in the functional layer 10 more uniformly, and when the pixel limiting material generates water molecules through condensation reaction, the water-absorbing material nearby can absorb the water molecules at the first time, which is beneficial to preventing the water molecules from leaving the functional layer 10. Meanwhile, the process is simple, and an additional film layer is not required, which is beneficial to reducing the thickness and manufacturing cost of the display panel 100.
In one embodiment, referring to fig. 2, the functional layer 10 includes a pixel defining layer 11 formed of a pixel defining material and a water absorbing layer 12 formed of a water absorbing material, which are stacked. The water absorbing layer 12 is disposed between the pixel defining layer 11 and the organic light emitting layer 20. By arranging the water-absorbing layer 12 between the pixel defining layer 11 and the organic light-emitting layer 20, when water molecules generated by condensation reaction of the pixel defining layer 11 diffuse towards the organic light-emitting layer 20, the water molecules are absorbed by the water-absorbing layer 12 at the interface of the pixel defining layer 11 and the water-absorbing layer 12, and thus the water molecules cannot reach the organic light-emitting layer 20 through the water-absorbing layer 12, so that the risk of damage of the display unit by the water molecules is reduced, and the light-emitting performance is improved.
In one embodiment, referring to fig. 1, the display panel 100 includes a planarization layer 30 and a plurality of electrodes 40, the plurality of electrodes 40 are formed between the planarization layer 30 and the light emitting layer 20, and each opening 101 exposes a corresponding electrode 40. By providing the planarization layer 30 and the plurality of electrodes 40, it is advantageous to ensure the flatness of the display panel 100 and the good electrical reliability of the light emitting unit 21.
In one embodiment, referring to fig. 3, the display panel 100 further includes a cathode 50, a first deposition layer 60, a planarization compensation layer 70, and a second deposition layer 80 sequentially stacked on the organic light emitting layer 20 opposite to the functional layer 10. It is understood that the cathode 50 can cooperate with the electrode 40 on the other side to provide a voltage to the light emitting unit 21, so that the light emitting unit 21 can emit light smoothly. The first deposition layer 60, the flatness compensation layer 70, and the second deposition layer 80 can improve the flatness of the display panel 100 and can protect the light emitting cells 21 and other devices inside. In addition, if the water absorbing material is not provided, water generated by condensation reaction of the pixel defining material slowly permeates and corrodes the cathode 50, and thus, in the top-emitting OLED device emitting light from the cathode 50, problems such as pixel shrinkage and bluing are likely to occur. In the invention, the functional layer 10 is added with the water-absorbing material, so that water molecules cannot penetrate through the overlooking cathode 50, and the application of the top-emitting OLED device is facilitated.
Referring to fig. 1, an embodiment of the present invention further provides a display device, where the display device may be an electronic device with a display function, such as a display screen, a smart phone, a tablet computer, and a personal digital assistant. The display device includes the display panel 100 provided by the present invention. By adding the display panel 100 provided by the invention into the display device, the display device has good display performance and long service life because the display panel 100 can prevent water molecules generated by condensation reaction of the pixel defining material from damaging the light emitting unit 21.
Referring to fig. 1 and fig. 4, an embodiment of the invention further provides a manufacturing method of a display panel 100, the manufacturing method includes:
s101: forming the functional layer 10 having the pixel defining material and the water absorbing material and having the functional layer 10 with a plurality of openings 101;
s102: an organic light emitting layer 20 having a plurality of light emitting cells 21 is formed on the functional layer 10, and each light emitting cell 21 is received in a corresponding opening 101.
By providing the functional layer 10 with the pixel defining material and the water absorbing material, the functional layer 10 has good dielectric constant and insulation property, and meanwhile, the water absorbing material can absorb water molecules generated by condensation reaction of the pixel defining material, so that the water molecules are prevented from diffusing to the organic light emitting layer 20 to damage the light emitting unit 21, and the display effect is favorably improved.
In one embodiment, referring to fig. 1, the water absorbing material comprises fullerene. It can be understood that the fullerene has a better water absorption performance, and the fullerene can be kept stable at a higher temperature after water molecules are adsorbed, so that water molecules can be effectively prevented from permeating into the light emitting unit 21. Meanwhile, the fullerene absorbs less in the emission ranges of red light, green light and blue light, and the luminous performance is not influenced.
In one embodiment, the fullerene comprises C20、C60、C70、C72、C76、C84And C100One or more of (a).
In one embodiment, referring to fig. 2 and 4, S101: forming the functional layer 10 having the pixel defining material and the water absorbing material and having the functional layer 10 have a plurality of openings 101, including:
s1011: forming a pixel defining layer 11 using a pixel defining material;
s1012: the water-absorbing layer 12 is formed between the pixel defining layer 11 and the organic light-emitting layer 20 using a water-absorbing material.
By arranging the water-absorbing layer 12 between the pixel defining layer 11 and the organic light-emitting layer 20, when water molecules generated by condensation reaction of the pixel defining layer 11 diffuse towards the organic light-emitting layer 20, the water molecules are absorbed by the water-absorbing layer 12 at the interface of the pixel defining layer 11 and the water-absorbing layer 12, and thus the water molecules cannot reach the organic light-emitting layer 20 through the water-absorbing layer 12, so that the risk of damage of the display unit by the water molecules is reduced, and the light-emitting performance is improved.
In one embodiment, referring to fig. 1 and 4, S101: forming the functional layer 10 having the pixel defining material and the water absorbing material and having the functional layer 10 have a plurality of openings 101, including:
s1013: a water absorbing material is doped into the pixel defining material to form the functional layer 10.
By doping the water-absorbing material in the pixel limiting material to form the functional layer 10, the water-absorbing material is distributed in the functional layer 10 more uniformly, and when the pixel limiting material generates water molecules through condensation reaction, the water-absorbing material nearby can absorb the water molecules at the first time, which is beneficial to preventing the water molecules from leaving the functional layer 10. Meanwhile, the process is simple, and an additional film layer is not required, which is beneficial to reducing the thickness and manufacturing cost of the display panel 100.
In one embodiment, referring to fig. 1 and 4, S102: the method of forming an organic light-emitting layer 20 having a plurality of light-emitting units 21 on the functional layer 10 and accommodating each light-emitting unit 21 in a corresponding opening 101 includes:
s103: a cathode 50, a first deposition layer 60, a planarization compensation layer 70 and a second deposition layer 80 are sequentially formed on the organic light emitting layer 20 opposite to the functional layer 10.
It is understood that the cathode 50 can cooperate with the electrode 40 on the other side to provide a voltage to the light emitting unit 21, so that the light emitting unit 21 can emit light smoothly. The first deposition layer 60, the flatness compensation layer 70, and the second deposition layer 80 can improve the flatness of the display panel 100 and can protect the light emitting cells 21 and other devices inside.
In one embodiment, referring to fig. 1 and 4, S101: before forming the functional layer 10 having the pixel defining material and the water absorbing material and having the functional layer 10 have the plurality of openings 101, the method includes:
s91: providing a planarization layer 30;
s92: a plurality of electrodes 40 are formed on the planarization layer 30.
By forming the planarization layer 30 and the plurality of electrodes 40, it is advantageous to ensure the flatness of the display panel 100 and the good electrical reliability of the light emitting unit 21.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (15)
1. The display panel is characterized by comprising a functional layer and an organic light emitting layer, wherein the functional layer is provided with a plurality of openings, the organic light emitting layer is provided with a plurality of light emitting units, the organic light emitting layer covers the functional layer and enables each light emitting unit to be contained in the corresponding opening, the functional layer comprises pixel limiting materials and water absorbing materials, and the water absorbing materials are used for absorbing water molecules generated by condensation reaction of the pixel limiting materials.
2. The display panel of claim 1, wherein the water absorbing material comprises fullerene.
3. The display panel of claim 2, wherein the fullerene comprises C20、C60、C70、C72、C76、C84And C100One or more of (a).
4. A display panel as claimed in any one of claims 1 to 3 characterized in that the pixel defining material is doped with the water absorbing material to form the functional layer.
5. The display panel according to any one of claims 1 to 3, wherein the functional layer includes a pixel defining layer formed of the pixel defining material and a water absorbing layer formed of the water absorbing material, which are laminated, and the water absorbing layer is provided between the pixel defining layer and the organic light emitting layer.
6. The display panel according to claim 1, wherein the display panel comprises a planarization layer and a plurality of electrodes formed between the planarization layer and the light emitting layer, each of the openings exposing a corresponding one of the electrodes.
7. The display panel according to claim 1, further comprising a cathode, a first deposition layer, a flatness compensation layer, and a second deposition layer, which are sequentially stacked on a side of the organic light emitting layer facing away from the functional layer.
8. A display device characterized by comprising the display panel according to any one of claims 1 to 7.
9. A method for manufacturing a display panel is characterized by comprising the following steps:
forming a functional layer having a pixel defining material and a water absorbing material and having a plurality of openings;
and forming an organic light-emitting layer with a plurality of light-emitting units on the functional layer, and enabling each light-emitting unit to be accommodated in the corresponding opening.
10. The method of claim 9, wherein the water-absorbing material comprises fullerene.
11. The method of claim 10, wherein said fullerene comprises C20、C60、C70、C72、C76、C84And C100One or more of (a).
12. The manufacturing method according to any one of claims 9 to 11, wherein the forming a functional layer having a pixel defining material and a water absorbing material and having the functional layer have a plurality of openings includes:
forming a pixel defining layer using the pixel defining material;
and forming a water absorbing layer between the pixel defining layer and the organic light emitting layer using the water absorbing material.
13. The manufacturing method according to any one of claims 9 to 11, wherein the forming a functional layer having a pixel defining material and a water absorbing material and having the functional layer have a plurality of openings includes:
doping the water-absorbing material into the pixel defining material to form the functional layer.
14. The method according to claim 9, wherein the forming an organic light-emitting layer having a plurality of light-emitting units on the functional layer and each of the light-emitting units being accommodated after the corresponding opening comprises:
and sequentially forming a cathode, a first deposition layer, a flat compensation layer and a second deposition layer on one side of the organic light-emitting layer, which faces away from the functional layer.
15. The method of manufacturing according to claim 9, wherein before forming the functional layer having the pixel defining material and the water absorbing material and having the functional layer having the plurality of openings, comprises:
providing a planarization layer;
a plurality of electrodes is formed on the planarization layer.
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| CN103972267A (en) * | 2014-04-16 | 2014-08-06 | 京东方科技集团股份有限公司 | Organic light-emitting display device |
| CN105390620A (en) * | 2015-12-21 | 2016-03-09 | 昆山国显光电有限公司 | OLED device, OLED device manufacturing method and display |
| CN109638059A (en) * | 2018-12-20 | 2019-04-16 | 武汉华星光电半导体显示技术有限公司 | OLED display panel and preparation method thereof, display device |
| US20200227673A1 (en) * | 2016-08-15 | 2020-07-16 | Oti Lumionics Inc. | Light transmissive electrode for light emitting devices |
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- 2021-01-26 CN CN202110107963.1A patent/CN112992990A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103972267A (en) * | 2014-04-16 | 2014-08-06 | 京东方科技集团股份有限公司 | Organic light-emitting display device |
| CN105390620A (en) * | 2015-12-21 | 2016-03-09 | 昆山国显光电有限公司 | OLED device, OLED device manufacturing method and display |
| US20200227673A1 (en) * | 2016-08-15 | 2020-07-16 | Oti Lumionics Inc. | Light transmissive electrode for light emitting devices |
| CN109638059A (en) * | 2018-12-20 | 2019-04-16 | 武汉华星光电半导体显示技术有限公司 | OLED display panel and preparation method thereof, display device |
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Application publication date: 20210618 |