CN221151900U - OLED display structure and display - Google Patents
OLED display structure and display Download PDFInfo
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- CN221151900U CN221151900U CN202322374483.9U CN202322374483U CN221151900U CN 221151900 U CN221151900 U CN 221151900U CN 202322374483 U CN202322374483 U CN 202322374483U CN 221151900 U CN221151900 U CN 221151900U
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 18
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- 238000004806 packaging method and process Methods 0.000 claims abstract description 3
- 238000005538 encapsulation Methods 0.000 claims description 5
- 239000011368 organic material Substances 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 229910010272 inorganic material Inorganic materials 0.000 claims description 3
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- 238000002360 preparation method Methods 0.000 abstract description 2
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- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 3
- 229910004205 SiNX Inorganic materials 0.000 description 2
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- 229910052751 metal Inorganic materials 0.000 description 2
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- 238000012986 modification Methods 0.000 description 2
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- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 229920002120 photoresistant polymer Polymers 0.000 description 2
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- 229910001111 Fine metal Inorganic materials 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
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Abstract
The utility model discloses an OLED display structure and a display, which comprise an anode substrate, a light-emitting structure layer, a cathode, a packaging layer, a flat layer and a color conversion film which are sequentially arranged in the display from bottom to top, wherein the light-emitting structure layer comprises a first OLED light-emitting structure and a second OLED light-emitting structure which are adjacently distributed left and right, and the first OLED light-emitting structure comprises a P-type hole transport layer and an N-type electron transport layer; the second OLED light-emitting structure comprises a hole transport layer, a light-emitting layer and an electron transport layer. A display includes an OLED display structure. The two structures are complementary, so that the preparation of the low-voltage driving light-emitting device is realized, and the power consumption is reduced by reducing the driving voltage of the device, thereby prolonging the service life of the device. Meanwhile, the working voltage interval of the device is enlarged, and the contrast of the display is improved.
Description
Technical Field
The utility model relates to the field of display devices, in particular to an OLED display structure and a display.
Background
The light-emitting structure of the OLED top-emitting device is generally composed of an anode, a hole injection layer, a hole transport layer, a light-emitting layer, an electron transport layer, an electron injection layer, and a cathode, and then colorization is achieved by a white light and color filter technology. The carrier transport on the different organic functional layers, the carrier balance in the light emitting layer and the doping of the OLED light emitting structure are continuously optimized, so that a rather complex device structure is caused, which is disadvantageous to reduce the use of organic materials and the cost brought by the double-layer structure or the complex laminated structure of the display device. In addition, the display emits light under the drive of the externally applied drive voltage, and the higher the drive voltage is, the larger the power consumption of the display is, so that more heat is generated, the stability of the device is further affected, and the service life of the device is reduced.
Disclosure of Invention
The utility model aims to: the utility model aims to provide an OLED display structure with low power consumption and high contrast ratio and a display.
The technical scheme is as follows: in order to achieve the above object, the present utility model provides an OLED display structure and a display, comprising an anode substrate, a light emitting structure layer, a cathode, a packaging layer, a flat layer and a color conversion film sequentially disposed inside the display from bottom to top,
The light-emitting structure layer comprises a first OLED light-emitting structure and a second OLED light-emitting structure which are distributed adjacently left and right, and the first OLED light-emitting structure comprises a P-type hole transport layer and an N-type electron transport layer; the second OLED light-emitting structure comprises a hole transport layer, a light-emitting layer and an electron transport layer.
Still further, the anode substrate is typically a pattern formed of a transparent conductive material.
Further, the thickness of each of the first OLED light-emitting structure and the second OLED light-emitting structure is 100-160nm.
Further, the first and second OLED light emitting structures are blue light emitting structures. The blue light is used as light source, the emitted light is converted into red, green and blue by the color conversion film, and finally the light with different brightness is mixed into color image. By using the method, not only the different luminous efficiency of three RGB devices can be improved, but also the uneven color phenomenon caused by the different service lives of the three devices can be improved.
Further, the encapsulation layer is a structure combining an organic material and an inorganic material. Such as SiNx/Al 2O3.
Further, the flat layer is composed of a transparent resin material.
Further, the surface of the color conversion film is sequentially spin-coated with a fluorescent red color conversion film and a fluorescent green color conversion film.
A display includes an OLED display structure.
The beneficial effects are that: the OLED has the beneficial effects that by arranging two light-emitting layer structures, the first OLED has a simple light-emitting structure and no traditional light-emitting layer. The carrier is injected into the organic layer through the electrode interface, and then migrates to the pn heterojunction interface for compound luminescence under the action of the electric field, so that exciton generation is a barrier-free process, and the structure has low driving voltage and low power consumption. The second OLED light-emitting structure is normal and comprises a traditional light-emitting layer, carriers and excitons are limited in the light-emitting layer to perform compound light emission, and the structure is high in driving voltage and high in brightness. The two structures are complementary, so that the preparation of the low-voltage driving light-emitting device is realized, and the power consumption is reduced by reducing the driving voltage of the device, thereby prolonging the service life of the device. Meanwhile, the working voltage interval of the device is enlarged, and the contrast of the display is improved.
The utility model has the beneficial effects that the first OLED light-emitting structure can emit light without a light-emitting layer. It is used to replace double layer structure or complex laminated structure. The steps in the manufacturing process are reduced, meanwhile, the organic materials are high in price, and the cost can be relatively reduced by reducing the number of the film layers.
Drawings
FIG. 1 is a schematic view showing the OLED display structure of the present embodiment;
FIG. 2 is a schematic view of a first OLED light emitting structure according to the present embodiment;
fig. 3 is a schematic view of a second OLED light emitting structure according to this embodiment.
Detailed Description
As shown in fig. 1-3, an OLED display structure includes an anode substrate 1, a light emitting structure layer 2, a cathode 3, an encapsulation layer 4, a flat layer 5 and a color conversion film 6 sequentially disposed inside the display from bottom to top, wherein the light emitting structure layer 2 includes a first OLED light emitting structure 21 and a second OLED light emitting structure 22 that are adjacently distributed from left to right, and the first OLED light emitting structure 21 includes a P-type hole transport layer 211 and an N-type electron transport layer 212; the second OLED light emitting structure 22 includes a hole transporting layer 221, a light emitting layer 222, and an electron transporting layer 223.
The thickness of the first and second OLED light emitting structures 21 and 22 is 100-160nm. The first and second OLED light emitting structures 21 and 22 are blue OLED light emitting structures.
The anode substrate 1 of this embodiment is a pattern formed by transparent conductive material, and the encapsulation layer 4 is a structure formed by combining organic material and inorganic material, such as SiNx/Al 2 O. The flat layer 5 is made of a transparent resin material. The surface of the color conversion film 6 is sequentially spin-coated with a fluorescent red color conversion film and a fluorescent green color conversion film.
A display includes an OLED display structure.
The specific manufacturing flow of the OLED display structure is as follows:
(1) The anode patterning on the substrate is realized through the processes of film forming, photoresist coating, exposure, development, etching and photoresist removal. (injection of holes from the anode substrate 1)
(2) By adopting a fine metal photomask, a whole layer of first OLED light-emitting structure 21 is formed on an anode substrate 1 through a vacuum evaporation mode, then a second OLED light-emitting structure 22 is formed on the surface of the first OLED light-emitting structure 21, holes injected from the anode substrate 1 form excitons at the interface of the P-type hole transport layer 211 and electrons injected from a cathode 3 through an N-type electron transport layer 212, and exciton radiation transitions to emit light. Holes injected from the anode substrate 1 pass through the hole transport layer 221 and electrons injected from the cathode 3 pass through the electron transport layer 223 to reach the light emitting layer 222, and the light emission layer 222 is restricted from performing recombination light emission.
(3) And a general metal mask plate is adopted, and the metal cathode 3 is evaporated by a vacuum evaporation mode. (electrons are injected from the cathode 3)
(4) The encapsulation layer 4 is formed by depositing silicon nitride above the cathode 3 by Chemical Vapor Deposition (CVD) and depositing aluminum oxide above the OLED silicon nitride by monoatomic layer deposition (ALD); depositing silicon nitride on the aluminum oxide by adopting a Chemical Vapor Deposition (CVD) method; forming an organic/inorganic/organic "sandwich" structure.
(5) The planarization layer 5 is prepared by a planarization operation.
(6) Dispersing organic fluorescent dye in ultraviolet light curing resin, coating a layer of ultraviolet curing glue on the flat layer 5 by adopting a spin coating mode, and forming the color conversion film 6 by ultraviolet light curing. A fluorescent red color conversion film and a fluorescent green color conversion film are sequentially spin-coated on the surface of the color conversion film 6.
In the operation flow, when a current passes through the anode substrate 1 and the cathode 3, holes injected from the anode substrate 1 pass through the P-type hole transport layer 211 and electrons injected from the cathode 3 pass through the N-type electron transport layer 212 to form excitons at the interface therebetween, and the exciton radiation transitions to emit light. Holes injected from the anode substrate 1 pass through the hole transport layer 221 and electrons injected from the cathode 3 pass through the electron transport layer 223 to reach the light emitting layer 222, and the electrons and holes are confined together in the light emitting layer 222, and in this process, recombination light emission is performed. Thus, the display can excite the OLED light emitting structure and display images by controlling the current.
The foregoing is only a preferred embodiment of the utility model, it being noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present utility model, and such modifications and adaptations are intended to be comprehended within the scope of the utility model.
Claims (7)
1. An OLED display structure is characterized by comprising an anode substrate, a light-emitting structure layer, a cathode, a packaging layer, a flat layer and a color conversion film which are sequentially arranged in the display from bottom to top,
The light-emitting structure layer comprises a first OLED light-emitting structure and a second OLED light-emitting structure which are distributed adjacently left and right, and the first OLED light-emitting structure comprises a P-type hole transport layer and an N-type electron transport layer; the second OLED light-emitting structure comprises a hole transport layer, a light-emitting layer and an electron transport layer.
2. The OLED display structure of claim 1, wherein the first and second OLED light-emitting structures each have a thickness of 100-160nm.
3. The OLED display structure of claim 2, wherein the first and second OLED light-emitting structures are blue light-emitting structures.
4. The OLED display structure of claim 1, wherein the encapsulation layer is a combination of organic and inorganic materials.
5. The OLED display structure according to claim 1, wherein the flat layer is made of a transparent resin material.
6. The OLED display structure according to claim 1, wherein the color conversion film is sequentially spin-coated with a fluorescent red color conversion film and a fluorescent green color conversion film.
7. A display comprising an OLED display structure as claimed in any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322374483.9U CN221151900U (en) | 2023-09-01 | 2023-09-01 | OLED display structure and display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322374483.9U CN221151900U (en) | 2023-09-01 | 2023-09-01 | OLED display structure and display |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221151900U true CN221151900U (en) | 2024-06-14 |
Family
ID=91416499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322374483.9U Active CN221151900U (en) | 2023-09-01 | 2023-09-01 | OLED display structure and display |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221151900U (en) |
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2023
- 2023-09-01 CN CN202322374483.9U patent/CN221151900U/en active Active
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