CN113299845A - Electroluminescent unit, display panel, and electronic device - Google Patents
Electroluminescent unit, display panel, and electronic deviceDownload PDFInfo
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- 239000004065semiconductorSubstances0.000claimsdescription26
- 239000000463materialSubstances0.000claimsdescription16
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- 238000005538encapsulationMethods0.000description7
- 238000010586diagramMethods0.000description3
- 239000012769display materialSubstances0.000description2
- 238000004020luminiscence typeMethods0.000description2
- 230000006798recombinationEffects0.000description2
- 238000005215recombinationMethods0.000description2
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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
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
- H10K50/125—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers specially adapted for multicolour light emission, e.g. for emitting white light
- H10K50/13—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers specially adapted for multicolour light emission, e.g. for emitting white light comprising stacked EL layers within one EL unit
- H10K50/131—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers specially adapted for multicolour light emission, e.g. for emitting white light comprising stacked EL layers within one EL unit with spacer layers between the electroluminescent 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
- 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
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
- 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
- H10K59/60—OLEDs integrated with inorganic light-sensitive elements, e.g. with inorganic solar cells or inorganic photodiodes
- H10K59/65—OLEDs integrated with inorganic image sensors
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- Electroluminescent Light Sources (AREA)
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Abstract
Translated fromChinese
Description
Technical Field
The application belongs to the technical field of electroluminescence, and particularly relates to an electroluminescence unit, a display panel and electronic equipment.
Background
In the related art, each pixel of an active-matrix light emitting diode (AMOLED) has an input current controlled by a Thin Film Transistor (TFT) below the pixel, so as to control the brightness of each pixel.
The Camera Under the screen (CUP) can have a good hiding effect on the Camera, so that the screen position of the electronic equipment is more attractive and complete. The area of the off-screen camera requires high transmittance to satisfy the camera use conditions of the electronic device. Compared with other areas of the screen, the area of the pixels of the area of the camera under the screen is smaller, and the interval between the pixels is larger.
In the prior art, in order to ensure that the brightness of the camera area under the screen is consistent with that of other areas of the screen, the brightness of the electroluminescent unit of a single pixel in the camera area under the screen is higher than that of the other areas. Therefore, the aging speed of the pixel material in the area of the camera under the screen is higher, and the service life is reduced. The problem that the brightness of the camera area under the screen is obviously inconsistent with that of other areas of the screen can occur after the camera is used for a long time.
Disclosure of Invention
The present application is directed to an electroluminescent unit, a display panel and an electronic device, which at least solve one of the problems of the related art.
In order to solve the technical problem, the present application is implemented as follows:
in a first aspect, an embodiment of the present application provides an electroluminescent unit, including:
the transparent cathode is used for being connected to the circuit cathode of the electroluminescent unit and emitting light rays of the electroluminescent unit;
the anode is used for being connected to the circuit anode of the electroluminescent unit;
at least two layers of pixel light-emitting units which are arranged in a stacked mode are arranged between the transparent cathode and the anode, and each pixel light-emitting unit comprises a pixel light-emitting layer, an electronic functional layer arranged on one side of the pixel light-emitting layer and a hole functional layer arranged on the other side of the pixel light-emitting layer;
the pixel light-emitting unit further comprises a connecting layer arranged between two adjacent pixel light-emitting units, one side of the connecting layer is an electronic functional layer, the other side of the connecting layer is a hole functional layer, and the connecting layer is used for providing electrons for the electronic functional layer and providing holes for the hole functional layer.
In a second aspect, an embodiment of the present application provides a display panel, including:
a plurality of electroluminescent units as described in the first aspect;
a thin film transistor for inputting a current to the electroluminescent unit;
the thin film packaging layer and the thin film transistor are arranged in a stacked mode, the electroluminescent unit is located between the thin film packaging layer and the thin film transistor, and the transparent cathode is close to one side of the thin film packaging layer.
In a third aspect, an embodiment of the present application provides an electronic device, which includes the display panel according to the second aspect.
In the embodiment of the application, electrons and holes can be compounded into excitons and emit light in the pixel light-emitting layer through the electronic functional layer and the hole functional layer which are arranged on the two sides of the pixel light-emitting layer, so that the light-emitting efficiency of the electroluminescent unit is increased, the accuracy of light-emitting color is improved, the current required to be applied is smaller while the requirement on brightness is met by the electroluminescent unit, and the aging speed of a display material is reduced.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic diagram of an electroluminescent unit according to one embodiment of the present application;
fig. 2 is a schematic diagram of a staggered arrangement of electroluminescent units according to an embodiment of the present application.
Fig. 3 is a schematic structural diagram of a display panel according to an embodiment of the present application.
Reference numerals: 300-thin film encapsulation layer, 301-thin film transistor, 302-pixel defining layer, 303-red electroluminescent unit, 304-green electroluminescent unit, 305-blue electroluminescent unit, 306-transparent cathode, 307-pixel luminescent unit, 3071-electronic functional layer, 3072-pixel luminescent layer, 3073-hole functional layer, 308-connecting layer, 3081-P type semiconductor layer, 3082-N type semiconductor layer, 310-anode, 4-touch layer, 5-array layer, 6-optical transparent adhesive, 7-cover plate.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The features of the terms first and second in the description and in the claims of the present application may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more unless otherwise specified. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.
In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
An electroluminescent unit, a display panel, and an electronic apparatus according to embodiments of the present application are described below with reference to fig. 1 to 2.
As shown in fig. 1, an electroluminescent cell according to some embodiments of the present application, the electroluminescent cell comprising:
atransparent cathode 306, wherein thetransparent cathode 306 is used for connecting to a negative electrode of the circuit of the electroluminescent unit and emitting light of the electroluminescent unit.
Ananode 310, wherein theanode 310 is used for connecting to the positive electrode of the electroluminescent unit;
at least two layers of pixellight emitting units 307 arranged in a stacked manner are positioned between thetransparent cathode 306 and theanode 310, and the pixellight emitting units 307 comprise pixellight emitting layers 3072, electronfunctional layers 3071 arranged on one side of the pixellight emitting layers 3072, and holefunctional layers 3073 arranged on the other side of the pixel light emitting layers 3072.
And aconnection layer 308 disposed between two adjacent pixellight emitting units 307. One side of theconnection layer 308 is an electronicfunctional layer 3071, and the other side is a holefunctional layer 3072. The connection layer serves to supply electrons to theelectron function layer 3071 and supply holes to thehole function layer 3072.
In this embodiment, the electronfunctional layer 3071 and the holefunctional layer 3073 disposed on both sides of the pixellight emitting layer 3072 enable electrons and holes to be combined into excitons in the pixellight emitting layer 3072 and emit light, thereby increasing the light emitting efficiency of the electroluminescent unit and improving the accuracy of the light emitting color, so that the electroluminescent unit needs less applied current while meeting the brightness requirement, and the aging speed of the display material is reduced.
For example, theconnection layer 308 includes a P-type semiconductor and an N-type semiconductor, and theconnection layer 308 has a high concentration of the N-type semiconductor on the side close to the adjacentelectron function layer 3071 and a high concentration of the P-type semiconductor on the side close to the adjacenthole function layer 3072. This can make it easier for theconnection layer 308 to supply electrons or holes to the corresponding side.
The P-type semiconductor can provide holes, and theconnection layer 308 can provide holes to thehole function layer 3073 through the P-type semiconductor. The N-type semiconductor can supply electrons, and theconnection layer 308 can supply electrons to theelectron function layer 3071 through the N-type semiconductor. This enables the pixel light emitting cells on both sides of theconnection layer 308 to efficiently recombine electrons and holes to form excitons and emit light.
The P-type semiconductor enables the holefunctional layer 3073 in the adjacent pixellight emitting unit 307 to stably transport holes, and the N-type semiconductor enables the electronfunctional layer 3071 in the adjacent pixellight emitting unit 307 to stably transport electrons. This allows electrons and holes to be combined into excitons in the pixel light-emittinglayer 3072 between the electronfunctional layer 3071 and the holefunctional layer 3073, and light can be emitted. Compared with the prior art, the embodiment can more effectively enable excitons to emit light in the pixel light-emittinglayer 3072, improve the light-emitting efficiency and enable the emitted light to have higher brightness under the same current. And the excitons formed by recombination emit light exactly corresponding to the color corresponding to the pixel material of the pixel light-emittinglayer 3072. The accuracy of the luminescent color is improved.
In one embodiment, as shown in fig. 1, theconnection layer 308 includes a P-type semiconductor layer 3081 and an N-type semiconductor layer 3082 stacked together, where the N-type semiconductor layer 3082 is adjacent to the adjacentelectron function layer 3071, and the P-type semiconductor layer 3081 is adjacent to the adjacenthole function layer 3073.
In this embodiment, the P-type semiconductor layer 3081 is adjacent to thehole function layer 3073 in the pixellight emitting unit 307 of the corresponding side for providing holes. The N-type semiconductor layer 3082 is adjacent to theelectron function layer 3071 in the pixellight emitting unit 307 on the corresponding side for supplying electrons.
Referring to the orientation in fig. 1, theconnection layer 308 has a P-type semiconductor layer 3081 located at an upper layer and an N-type semiconductor layer 3082 located at a lower layer. The P-type semiconductor layer 3081 located at the upper layer supplies holes to thehole function layer 3073 in the pixellight emitting unit 307 at the upper side of theconnection layer 308. The N-type semiconductor layer 3082 located at the lower layer supplies electrons to theelectron function layer 307 in the pixellight emitting unit 307 at the lower side of theconnection layer 308.
In one embodiment, thepixel emission layer 3072 includes a matrix and a light emitting material doped in the matrix.
Alternatively, the pixellight emitting layer 3072 is a light emitting material layer.
In this embodiment, the light emitting material in the pixellight emitting layer 3072 is used to make the emitted light correspond to the color of the light emitting material when the excitons are recombined, so that the pixellight emitting layer 3072 can accurately emit the light of the corresponding color.
For example, the pixel light-emittinglayer 3072 is formed of a light-emitting material such that the light-emitting material layer has only a light-emitting material. This enables excitons formed by recombination in the pixel light-emittinglayer 3072 to accurately emit light of a color corresponding to the light-emitting material. The accuracy of luminescence is improved.
In one embodiment, as shown in fig. 1 and fig. 2, the pixellight emitting layer 3072 is one of a red pixel light emitting layer, a green pixel light emitting layer, or a blue pixel light emitting layer. Each of the electroluminescent units has only one color of thepixel luminescent layer 3072.
In this embodiment, the pixellight emitting layer 3072 in the electroluminescent unit determines the color of light emitted by the electroluminescent unit. By selecting the pixel light-emittinglayer 3072 to be a red pixel light-emitting layer, a green pixel light-emitting layer, or a blue pixel light-emitting layer, thered electroluminescent unit 303, thegreen electroluminescent unit 304, or theblue electroluminescent unit 305 can be formed as an electroluminescent unit.
As shown in fig. 1 to 3, a display panel according to some embodiments of the present application includes:
a plurality of electroluminescent units as described in the above embodiments;
athin film transistor 301, wherein thethin film transistor 301 is used for inputting current to the electroluminescent unit.Thin film transistor 301 provides a negative connection of the circuit to thetransparent cathode 306 of the electroluminescent cell and a positive connection of the circuit to theanode 310 of the electroluminescent cell.
A thinfilm encapsulation layer 300, wherein the thinfilm encapsulation layer 300 is stacked with thethin film transistor 301. The electroluminescent unit is located between the thinfilm encapsulation layer 300 and thethin film transistor 301, and thetransparent cathode 306 is close to one side of the thinfilm encapsulation layer 300.
The side, far away from thethin film transistor 301, of the thinfilm packaging layer 300 is sequentially provided with atouch layer 4, anarray layer 5, an optically transparent adhesive 6 and acover plate 7 in a stacked manner.
The portion shown in fig. 2 is an emitting device portion of the display panel, and as shown in fig. 3, the display panel further includes atouch layer 4, anarray layer 5, an optically transparent adhesive 6, and acover plate 7 sequentially stacked on the thinfilm encapsulation layer 300.
The thinfilm encapsulation layer 300, thethin film transistor 301, and the electroluminescent unit form a light emitting device of the display panel.
In this embodiment, a plurality of electroluminescent units are distributed in the display panel. Adjacent electroluminescent cells are separated by apixel defining layer 302.
The light of the display panel exits thetransparent cathode 306. The display panel has more accurate light emission and can accurately correspond to the pixel material of the pixellight emitting layer 3072 in each electroluminescent unit. And the luminous efficiency of the display panel is higher, compared with the prior art, the light emitted by the electroluminescent unit in the display panel has higher brightness under the same input current. Under the condition of meeting the light-emitting requirement, the current input to the electroluminescent unit in the display panel is smaller, the aging rate is reduced, and the service life is prolonged.
In one embodiment, as shown in FIG. 2, each of the pixelemissive layers 3072 in a single electroluminescent unit is the same color.
Among the plurality of electroluminescent units, at least one of the electroluminescent units having a red pixel emission layer as thepixel emission layer 3072, a green pixel emission layer as thepixel emission layer 3072, and a blue pixel emission layer as thepixel emission layer 3072 is included.
The electroluminescent units with different color pixelluminescent layers 3072 are alternately distributed.
In this embodiment, the electroluminescent unit in which the red pixel light-emitting layer is located is ared electroluminescent unit 303, the electroluminescent unit in which the green pixel light-emitting layer is located is agreen electroluminescent unit 304, and the electroluminescent unit in which the blue pixel light-emitting layer is located is ablue electroluminescent unit 305.
The red, green, and blue electro-luminescence cells
In one embodiment, each of the electroluminescent units has three of the pixelluminescent layers 3072 of the same color.
In this embodiment, stacking three layers of the pixellight emitting units 307 enables the emitted light to be superimposed with greater luminance, so that the luminance requirement for light emission can be satisfied with a reduction in the current input to the pixellight emitting units 307 by thethin film transistor 301. The input current is reduced, and the aging rate can be reduced.
In one embodiment, as shown in fig. 2, among the plurality of electroluminescent units, the electroluminescent unit of which the pixelluminescent layer 307 is a green pixel luminescent layer has two pixelluminescent layers 307, the electroluminescent unit of which the pixelluminescent layer 307 is a red pixel luminescent layer has three pixelluminescent layers 307, and the electroluminescent unit of which the pixelluminescent layer 307 is a blue pixel luminescent layer has three pixel luminescent layers 307.
In this embodiment, the red, green, and blueelectroluminescent units luminescence cell 304 has higher luminous efficiency with respect to the red electro-luminescence cell 303 and the blue electro-luminescence cell 305. The luminance requirement of the green pixel can be satisfied by providing the pixellight emitting layer 307 in thegreen electroluminescent unit 304 as two layers. This can save material for the pixel light-emittingunit 307 in the electro-variable light-emitting unit, reducing the cost.
An electronic device according to some embodiments of the present application includes a display panel as described above.
In this embodiment, the electroluminescent unit in the electronic device can meet the requirement of the light-emitting brightness at a lower input current than the prior art. Effectively reduces the aging problem of the electroluminescent unit and prolongs the service life. And the electroluminescent unit has higher light emitting accuracy, and the accuracy of image display is improved.
In one embodiment, the electronic device further comprises a lower-screen camera, the lower-screen camera is opposite to the lower-screen camera area of the display panel, and the electroluminescent unit is located in the lower-screen camera area.
In this embodiment, the under-screen camera area can be used for imaging of the display panel. The area of the camera under the screen of the display panel is opposite to the camera under the screen, and the camera under the screen can shoot outwards through the position of the area of the camera under the screen of the display panel. The current that needs input is littleer in this display panel's camera region under the screen when satisfying the luminous demand of pixel, has reduced the ageing speed of some matter change luminescence unit in this region, has improved life.
The display panel can effectively avoid the problem that the brightness of the camera area under the screen is different from that of other areas of the display panel under the condition of long-time use.
In the description herein, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. An electroluminescent cell, comprising:
the transparent cathode is used for being connected to the circuit cathode of the electroluminescent unit and emitting light rays of the electroluminescent unit;
the anode is used for being connected to the circuit anode of the electroluminescent unit;
at least two layers of pixel light-emitting units which are arranged in a stacked mode are arranged between the transparent cathode and the anode, and each pixel light-emitting unit comprises a pixel light-emitting layer, an electronic functional layer arranged on one side of the pixel light-emitting layer and a hole functional layer arranged on the other side of the pixel light-emitting layer;
the pixel light-emitting unit further comprises a connecting layer arranged between two adjacent pixel light-emitting units, one side of the connecting layer is an electronic functional layer, the other side of the connecting layer is a hole functional layer, and the connecting layer is used for providing electrons for the electronic functional layer and providing holes for the hole functional layer.
2. The electroluminescent cell according to claim 1, wherein the connection layer comprises a P-type semiconductor layer and an N-type semiconductor layer stacked together, the N-type semiconductor layer being adjacent to the adjacent electron function layer side, and the P-type semiconductor layer being adjacent to the adjacent hole function layer side.
3. The electroluminescent unit of claim 1, wherein the pixel emissive layer comprises a matrix and an emissive material doped in the matrix;
or, the pixel light-emitting layer is a light-emitting material layer.
4. The electroluminescent unit of claim 1, wherein the pixel emissive layer is one of a red pixel emissive layer, a green pixel emissive layer, or a blue pixel emissive layer.
5. A display panel, comprising:
a plurality of electroluminescent units according to any one of claims 1 to 4;
a thin film transistor for inputting a current to the electroluminescent unit;
the thin film packaging layer and the thin film transistor are stacked, the electroluminescent unit is positioned between the thin film packaging layer and the thin film transistor, and the transparent cathode is close to one side of the thin film packaging layer;
and a touch layer, an array layer, an optical transparent adhesive and a cover plate are sequentially stacked on one side of the thin film packaging layer, which is far away from the thin film transistor.
6. The display panel according to claim 5, wherein each of the pixel light emitting layers in a single electroluminescent unit has the same color;
the electroluminescent units at least comprise electroluminescent units with pixel light-emitting layers being red pixel light-emitting layers, electroluminescent units with pixel light-emitting layers being green pixel light-emitting layers and electroluminescent units with pixel light-emitting layers being blue pixel light-emitting layers;
the electroluminescent units in which the pixel light-emitting layers with different colors are arranged are alternately distributed.
7. The display panel according to claim 6, wherein each of the electroluminescent units has three layers of the pixel light emitting layers having the same color.
8. The display panel according to claim 6, wherein among the plurality of electroluminescent units, an electroluminescent unit whose pixel light-emitting layer is a green pixel light-emitting layer has two pixel light-emitting layers, an electroluminescent unit whose pixel light-emitting layer is a red pixel light-emitting layer has three pixel light-emitting layers, and an electroluminescent unit whose pixel light-emitting layer is a blue pixel light-emitting layer has three pixel light-emitting layers.
9. An electronic device characterized by comprising a display panel according to any one of claims 5 to 8.
10. The electronic device of claim 9, further comprising an off-screen camera opposite an off-screen camera area of the display panel, the electroluminescent unit being located in the off-screen camera area.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110658845.XACN113299845A (en) | 2021-06-11 | 2021-06-11 | Electroluminescent unit, display panel, and electronic device |
| PCT/CN2022/097550WO2022257951A1 (en) | 2021-06-11 | 2022-06-08 | Electroluminescent unit, display panel, and electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110658845.XACN113299845A (en) | 2021-06-11 | 2021-06-11 | Electroluminescent unit, display panel, and electronic device |
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| CN113299845Atrue CN113299845A (en) | 2021-08-24 |
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| CN202110658845.XAPendingCN113299845A (en) | 2021-06-11 | 2021-06-11 | Electroluminescent unit, display panel, and electronic device |
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| WO (1) | WO2022257951A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114706249A (en)* | 2022-06-07 | 2022-07-05 | 惠科股份有限公司 | Display panel and display device |
| CN115064648A (en)* | 2022-08-05 | 2022-09-16 | 惠科股份有限公司 | OLED display panel and display device |
| WO2022257951A1 (en)* | 2021-06-11 | 2022-12-15 | 维沃移动通信有限公司 | Electroluminescent unit, display panel, and electronic device |
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| WO2022257951A1 (en) | 2022-12-15 |
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