CN112909061A - Flexible display panel and preparation method thereof - Google Patents
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- CN112909061A CN112909061A CN202110145464.1A CN202110145464A CN112909061A CN 112909061 A CN112909061 A CN 112909061A CN 202110145464 A CN202110145464 A CN 202110145464A CN 112909061 A CN112909061 A CN 112909061A
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- 238000002360 preparation method Methods 0.000 title abstract description 11
- 125000006850 spacer group Chemical group 0.000 claims abstract description 70
- 239000000758 substrate Substances 0.000 claims description 38
- 238000004519 manufacturing process Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- 229920002120 photoresistant polymer Polymers 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000005452 bending Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 236
- 239000010408 film Substances 0.000 description 17
- 238000010586 diagram Methods 0.000 description 5
- 239000011368 organic material Substances 0.000 description 5
- 239000010409 thin film Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000037303 wrinkles Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000002346 layers by function Substances 0.000 description 1
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/122—Pixel-defining structures or layers, e.g. banks
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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
- H10K59/1201—Manufacture or treatment
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
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Abstract
The application provides a flexible display panel and a preparation method thereof, wherein the flexible display panel comprises: a base layer, a pixel defining layer, a light emitting layer, and a cathode layer. The pixel defining layer is arranged on the base layer, wherein the pixel defining layer is provided with a plurality of opening areas which are respectively used for limiting the light emitting areas of the sub-pixels and a plurality of spacing areas which are respectively positioned between two adjacent opening areas; the light emitting layer is disposed in the opening region; the cathode layer is disposed on the light emitting layer. The spacers are in an inverted trapezoid shape, and the light emitting layer and the cathode layer can be disconnected with the corresponding spacers to form gaps. When the flexible display panel is bent, the gap can release stress generated during bending, and the problems of failure and falling of the film layer are solved.
Description
Technical Field
The application relates to the technical field of display panels, in particular to a flexible display panel and a preparation method thereof, which can prevent a film layer from losing efficacy or falling off.
Background
Flexible display panels are typically multi-layer film structures. Due to the influence of the physical characteristics of the film layers, when the flexible display panel is bent, the film layers are easy to lose effectiveness and fall off due to the difference of deformation stress among the film layers.
Referring to fig. 1, fig. 1 is a structural diagram of a flexible display panel in the prior art, a pixel defining layer 91 and a spacer layer 92 on the pixel defining layer 91 are formed on a base layer 90 of the flexible display panel 9, the pixel defining layer 91 is formed with a plurality of opening regions 911, an anode layer 93 is exposed in each opening region 911, and then a light emitting layer 94 and a cathode layer 95 are sequentially formed in each opening region 911. Corresponding sub-pixels, such as a red sub-pixel, a blue sub-pixel, or a green sub-pixel, are respectively disposed in the different opening areas 911.
However, in the prior art, the light emitting layer 94 and the cathode layer 95 are continuous films and cover the pixel defining layer 91 and the exposed anode layer 93. When the flexible display panel 9 shown in fig. 1 is bent, due to the influence of physical properties of the film layers, the deformation stresses between the film layers are greatly different, and these deformation differences are very likely to cause failure and falling of a part of the film layers, and especially the cathode layer 95 is likely to be broken due to wrinkles, so that failure and falling of the cathode layer 95 occur.
Meanwhile, in the preparation of an OLED flexible display panel for a light emitting layer, it is necessary to fabricate a corresponding light emitting layer in an opening region of a pixel defining layer. However, the flatness of the edge of the light-emitting layer near the opening area is often poor, and although the flatness is attempted to be improved as much as possible by adopting the arc transition mode, the light-emitting brightness of the light-emitting layer near the edge is still uneven, which adversely affects the display effect of the OLED product.
Therefore, a flexible display panel is needed to overcome the problems of failure and falling off of the film layer and uneven brightness of the flexible display panel.
Disclosure of Invention
The application aims to provide a flexible display panel and a preparation method thereof, and a light emitting layer and a cathode layer are designed in an open mode in an opening area of a pixel definition layer, so that a gap is formed between the light emitting layer and the cathode layer and between the light emitting layer and the pixel definition layer, stress generated when the flexible display panel is bent is released, and the problems of failure and falling of a film layer are solved.
In order to achieve the above object, the present application provides a flexible display panel including: a base layer, a pixel defining layer, a light emitting layer, and a cathode layer. The pixel defining layer is arranged on the base layer, wherein the pixel defining layer is provided with a plurality of opening areas which are respectively used for limiting the light emitting areas of the sub-pixels and a plurality of spacing areas which are respectively positioned between two adjacent opening areas; the light emitting layer is disposed in the opening region; the cathode layer is disposed on the light emitting layer. The spacing region is in an inverted trapezoid shape, and the light emitting layer and the cathode layer in the opening region are disconnected with the corresponding spacing region to form a first gap.
In one embodiment, the flexible display panel further includes: and the anode layer is arranged on the base layer. The anode layer is composed of a plurality of mutually independent anodes, and each anode is exposed in the corresponding opening area; wherein the light emitting layer and the cathode layer are sequentially disposed on the anode in the opening area.
In one embodiment, an insulating layer is further disposed on the anode, the insulating layer surrounding the open area to define an area of the open area; wherein the light emitting layer is disposed on the anode and a portion of the light emitting layer is on the insulating layer.
In one embodiment, the light emitting layer and the cathode layer are further sequentially formed on the spacer region of the pixel defining layer; wherein the light emitting layer and the cathode layer formed on the spacer region and the light emitting layer and the cathode layer formed in the opening region form a tomographic structure.
In one embodiment, the flexible display panel further includes: the spacer layer is arranged on the spacer area of the pixel definition layer and is composed of a plurality of spacers, and the spacers are in an inverted trapezoid shape.
In one embodiment, the light emitting layer and the cathode layer are further sequentially formed on the spacer region of the pixel defining layer; wherein the light emitting layer and the cathode layer formed on the spacer are disconnected from the spacer to form a second gap.
In one embodiment, an included angle between the sidewall of the spacer and the base layer is greater than 70 ° and less than 90 °.
In one embodiment, the base layer includes: the TFT substrate comprises a substrate layer, a TFT substrate and a flat layer. The TFT substrate is arranged on the substrate layer; the flat layer is arranged on one side of the TFT substrate far away from the substrate layer; wherein the anode layer is formed on one side of the flat layer far away from the TFT substrate; the pixel definition layer is formed on one side of the flat layer far away from the TFT substrate and covers a part of the anode layer.
The application also provides a preparation method of the flexible display panel, which is used for preparing the flexible display panel. The preparation method of the flexible display panel comprises the following steps:
providing a base layer;
manufacturing a pixel definition layer on the base layer through photoresist coating, exposing, developing and removing processes on the base layer;
the pixel definition layer is provided with a plurality of opening areas which are respectively used for limiting the light emitting areas of the sub-pixels and a plurality of spacing areas which are respectively positioned between two adjacent opening areas, and the spacing areas are in an inverted trapezoid shape; and
and sequentially manufacturing a light emitting layer and a cathode layer on the opening region and the spacer region of the pixel defining layer, wherein the light emitting layer and the cathode layer are disconnected from the corresponding spacer region to form a first gap.
In one embodiment, the light emitting layer and the cathode layer formed on the spacer region and the light emitting layer and the cathode layer formed in the opening region form a tomographic structure.
The beneficial effect of this application is: according to the flexible display panel and the preparation method thereof, the light emitting layer and the cathode layer are designed in an open mode in the opening area of the pixel definition layer, so that a gap is formed between the light emitting layer and the spacer area of the cathode layer and the pixel definition layer, stress generated when the flexible display panel is bent is released, and the problems of failure and falling of a film layer are solved. In addition, the insulating layer is additionally arranged on the anode, so that an effective light emitting area of the sub-pixel is defined, the uneven light emitting phenomenon of the edge part can be effectively improved through the structural design, and the light emitting uniformity of the flexible display panel is controlled.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a flexible display panel in the prior art.
Fig. 2 is a schematic structural diagram of a flexible display panel according to an embodiment of the present disclosure.
Fig. 3 is a schematic structural diagram of another embodiment of a flexible display panel according to the present application.
Fig. 4a to 4c are schematic structural diagrams of intermediate steps of the method for manufacturing a flexible display panel according to the present application.
The main reference numerals in the above figures are explained as follows:
First gap D1 second gap D2
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. 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.
Referring to fig. 2, in one embodiment, the present application provides a flexible display panel 1, where the flexible display panel 1 includes a base layer 10, a pixel defining layer 20, a light emitting layer 30, and a cathode layer 40, where the pixel defining layer 20 is disposed on the base layer 10, and the pixel defining layer 20 has a plurality of opening regions 201 respectively defining light emitting regions of sub-pixels, and a plurality of spacing regions 202 respectively located between two adjacent opening regions 201. The light emitting layer 30 is disposed in the opening area 201. The cathode layer 40 is disposed on the light emitting layer 30. The spacers 202 have an inverted trapezoid shape, and the light emitting layer 30 and the cathode layer 40 in the opening area 201 are disconnected from the corresponding spacers 202 to form a gap, that is, the light emitting layer 30 and the cathode layer 40 in the opening area 201 form a gap with the adjacent spacers 202, which is referred to as a first gap D1 herein. When the flexible display panel 1 is bent, the first gap D1 can be used as a buffer area to release stress generated by bending, so as to avoid the undesirable problems of film layer disconnection, falling off, failure and the like caused by wrinkles.
The spacers 202 are in the shape of inverted trapezoids. Specifically, an angle 203 (reference numeral, see fig. 4c) between the sidewall of the spacer 202 and the base layer 10 is greater than 70 ° and less than 90 °.
In the embodiment shown in fig. 2, the light emitting layer 30 and the cathode layer 40 are further sequentially formed on the spacer region 202 of the pixel defining layer 20; wherein the light emitting layer 30 and the cathode layer 40 formed on the spacer region 202 form a cross-sectional structure with the light emitting layer 30 and the cathode layer 40 formed in the opening region 201. The layered structure of the light emitting layer 30 and the cathode layer 40 can further prevent the film layer from being wrinkled and peeled off when the flexible display panel 1 is bent.
In one embodiment, the bottom dimension of the opening area 201 is larger than the top dimension thereof, and the area of the light emitting layer 30 in the opening area 201 is smaller than the bottom area of the opening area 201, so as to ensure that the first gap D1 can be formed. But the area of the light emitting layer 30 located in the open area 201 is slightly larger than the area of the orthographic projection of the top of the open area 201, which is equal to the area of the cathode layer 40 in the open area 201, so that the top orthographic projection of the open area 201 just surrounds the cathode layer 40 in the open area 201 to achieve the maximum aperture ratio.
As shown in fig. 2, in this embodiment, the flexible display panel 1 further includes: an anode layer 50 disposed on the substrate 10. The anode layer 50 is composed of a plurality of mutually independent anodes each exposed to the corresponding open area 201. Wherein the light emitting layer 30 and the cathode layer 40 are sequentially disposed on the anode in the open region 201.
As shown in fig. 2, the flexible display panel 1 further includes: and a spacer layer 60 disposed on the spacer region 202 of the pixel defining layer 20. The spacer layer 60 is made of a plurality of spacers.
Specifically, when an organic thin film is prepared, for example, when the light emitting layer 30 is prepared, an organic material is ink-jet printed in a filling region surrounded by the spacers of the spacer layer 60 and then solidified to form the organic thin film, and it is seen that the spacer layer 60 can prevent the organic material from exceeding the filling region, and further prevent the organic material from affecting the sealing property of the encapsulation thin film layer, and further, the display effect of the display device.
Referring to fig. 3, in the flexible display panel 1 of another embodiment, an insulating layer 70 is further disposed on the anode of the anode layer 50, and the insulating layer 70 surrounds the opening area 201 to define an area of the opening area 201; wherein the light emitting layer 30 positioned in the opening area 201 is disposed on the anode and a portion of the light emitting layer 30 is positioned on the insulating layer 70. The insulating layer 70 is added on the anode, so that an effective light-emitting area of the sub-pixel is defined, and meanwhile, the uneven light emission phenomenon of the edge part can be effectively improved due to the structural design. Further, the width of the actual light emitting region can be controlled by controlling the width of the insulating layer 70, thereby controlling the uniformity of the luminance of the organic light emitting functional layer.
In this embodiment, the spacers of the spacer layer 60 have an inverted trapezoidal shape, as shown in fig. 3. Accordingly, the light emitting layer 30 and the cathode layer 40 formed on the spacer region 202 and the spacer can be disconnected to form a second gap D2.
As shown in fig. 2 and 3, in the flexible display panel 1 of the present application, the base layer 10 includes: a substrate layer 11, a TFT substrate 12, and a planarization layer 13. Wherein the TFT substrate 12 is disposed on the substrate layer 11; the flat layer 13 is arranged on one side of the TFT substrate 12 far away from the substrate layer 11; wherein, the anode layer 50 is formed on one side of the flat layer 13 far away from the TFT substrate 12; the pixel defining layer 20 is formed on a side of the planarization layer 13 away from the TFT substrate 12 and covers a portion of the anode layer 50.
The application also provides a preparation method of the flexible display panel, which is used for preparing the flexible display panel 1.
The preparation method of the flexible display panel comprises the following steps:
s1, providing a substrate 10, such as the substrate 10 shown in fig. 4 a;
s2, forming a pixel defining layer 20 on the base layer 10 by coating, exposing, developing and removing the photoresist 14 on the base layer 10, as shown in fig. 4a to 4 c; wherein the pixel defining layer 20 has a plurality of opening regions 201 for defining the light emitting regions of the sub-pixels, respectively, and a plurality of spacing regions 202 between two adjacent opening regions 201, respectively, and the spacing regions 202 are in an inverted trapezoid shape; and
s3, sequentially forming a light emitting layer 30 and a cathode layer 40 (as shown in fig. 2) on the opening region 201 and the spacer region 202 of the pixel defining layer 20, wherein the light emitting layer 30 and the cathode layer 40 are disconnected from the corresponding spacer region 202 to form a first gap D1.
In the above step S1, the base layer 10 includes: a substrate layer 11, a TFT substrate 12, and a planarization layer 13. As shown in fig. 2 and 3, wherein the TFT substrate 12 is disposed on the substrate layer 11; the flat layer 13 is arranged on one side of the TFT substrate 12 far away from the substrate layer 11; wherein, the anode layer 50 is formed on one side of the flat layer 13 far away from the TFT substrate 12; the pixel defining layer 20 is formed on a side of the planarization layer 13 away from the TFT substrate 12 and covers a portion of the anode layer 50.
In the step S2, as shown in fig. 4a, a photoresist 14 is coated on the base layer 10 and patterned by exposure and development processes; then, as shown in fig. 4b, depositing the pixel defining layer 20 on the base layer 10; next, as shown in fig. 4c, after the pixel defining layer 20 is formed, the photoresist 14 is removed, so as to obtain the pattern of the spacer regions 202 of the pixel defining layer 20, wherein the spacer regions 202 are in an inverted trapezoid shape, and the opening region 201 is formed between two adjacent spacer regions 202.
As shown in fig. 4c, the included angle 203 between the sidewall of the spacer 202 and the base layer 10 is greater than 70 degrees and less than 90 degrees. The spacers 202 are each an inverted trapezoid of equal height.
In the above step S3, the light emitting layer 30 and the cathode layer 40 formed on the spacer region 202 form a cross-sectional structure with the light emitting layer 30 and the cathode layer 40 formed in the opening region 201, as shown in fig. 2 and 3.
The method for manufacturing the flexible display panel further includes a step S4 between the steps S2 and S3.
S4: a spacer layer 60 is formed on the spacer region 202 of the pixel defining layer 20, wherein the spacer layer 60 includes a plurality of spacers. In one embodiment, as shown in fig. 3, the spacers of the spacer layer 60 have an inverted trapezoidal shape.
When the step S3 is performed, the light emitting layer 30 and the cathode layer 40 formed on the spacer region 202 and the spacer of the spacer layer 60 can be disconnected to form a second gap D2, as shown in fig. 3.
Specifically, when the light emitting layer 30 is prepared, a filling area is surrounded by the spacers of the spacer layer 60, and an organic material is ink-jet printed in the filling area and then solidified to form an organic light emitting film, wherein the spacer layer 60 can prevent the organic material from exceeding the filling area, thereby improving the sealing property of the encapsulation film layer.
Actually, between step S1 and step S2, a step S5 and S6 are further included.
S5: forming an anode layer 50 on the substrate 10; wherein the anode layer 50 comprises a plurality of independent anode structures; and
s6: an insulating layer 70 is formed on the anode of the anode layer 50.
Then, step S2 is performed, at which each anode is exposed in the corresponding opening area 201, and the insulation layer 70 surrounds the opening area 201 to define the area of the opening area 201;
next, step S3 is performed, in which the light emitting layer 30 located in the opening area 201 is disposed on the anode and a portion of the light emitting layer 30 is located on the insulating layer 70.
As can be seen from the above description, the method for manufacturing a flexible display panel of the present application may sequentially perform, in one embodiment: step S1, step S5, step S6, step S2, step S4, and step S3. Of course, other processes need to be performed to form other layers, but since the focus of the present application is not other layers, further description is not provided herein.
To sum up, the flexible display panel 1 of the present application is designed to interrupt the open area 201 of the pixel definition layer 20, the light emitting layer 30 and the cathode layer 40, so that a gap is formed between the light emitting layer 30 and the cathode layer 40 and the spacer region 202 of the pixel definition layer 20, so as to release the stress generated when the flexible display panel 1 is bent, and overcome the problems of film failure and falling. In addition, the insulating layer 70 is added on the anode to define an effective light emitting area of the sub-pixel, and the structural design can effectively improve the phenomenon of uneven light emission at the edge part, so as to control the light emission uniformity of the flexible display panel 1.
The present application has been described in relation to the above embodiments, which are only examples for implementing the present application. It must be noted that the disclosed embodiments do not limit the scope of the application. Rather, modifications and equivalent arrangements included within the spirit and scope of the claims are included within the scope of the present application.
Claims (10)
1. A flexible display panel comprising:
a base layer;
a pixel defining layer disposed on the base layer, wherein the pixel defining layer has a plurality of opening regions for respectively defining light emitting regions of the sub-pixels, and a plurality of spacing regions respectively located between two adjacent opening regions;
a light emitting layer disposed in the opening region; and
a cathode layer disposed on the light emitting layer;
the method is characterized in that: the spacing region is in an inverted trapezoid shape, and the light emitting layer and the cathode layer in the opening region are disconnected with the corresponding spacing region to form a first gap.
2. The flexible display panel of claim 1, wherein the flexible display panel further comprises:
the anode layer is arranged on the base layer and is composed of a plurality of mutually independent anodes, and each anode is exposed in the corresponding opening area;
wherein the light emitting layer and the cathode layer are sequentially disposed on the anode in the opening area.
3. The flexible display panel according to claim 2, wherein an insulating layer is further provided on the anode, the insulating layer surrounding the open area to define an area of the open area; wherein the light emitting layer is disposed on the anode and a portion of the light emitting layer is on the insulating layer.
4. The flexible display panel according to claim 1, wherein the light emitting layer and the cathode layer are further sequentially laminated on the spacer region of the pixel defining layer;
wherein the light emitting layer and the cathode layer formed on the spacer region and the light emitting layer and the cathode layer formed in the opening region form a tomographic structure.
5. The flexible display panel of claim 1, wherein the flexible display panel further comprises:
the spacer layer is arranged on the spacer area of the pixel definition layer and is composed of a plurality of spacers, and the spacers are in an inverted trapezoid shape.
6. The flexible display panel according to claim 5, wherein the light emitting layer and the cathode layer are further sequentially formed on the spacer region of the pixel defining layer;
wherein the light emitting layer and the cathode layer formed on the spacer are disconnected from the spacer to form a second gap.
7. The flexible display panel of claim 1, wherein an angle between the sidewalls of the spacers and the base layer is greater than 70 ° and less than 90 °.
8. The flexible display panel of claim 2, wherein the base layer comprises:
a substrate layer;
the TFT substrate is arranged on the substrate layer; and
the flat layer is arranged on one side of the TFT substrate, which is far away from the substrate layer;
wherein the anode layer is formed on one side of the flat layer far away from the TFT substrate; the pixel definition layer is formed on one side of the flat layer far away from the TFT substrate and covers a part of the anode layer.
9. A method for manufacturing a flexible display panel, for manufacturing the flexible display panel according to any one of claims 1 to 8, wherein the method for manufacturing the flexible display panel comprises the following steps:
providing a base layer;
manufacturing a pixel definition layer on the base layer through photoresist coating, exposing, developing and removing processes on the base layer; the pixel definition layer is provided with a plurality of opening areas which are respectively used for limiting the light emitting areas of the sub-pixels and a plurality of spacing areas which are respectively positioned between two adjacent opening areas, and the spacing areas are in an inverted trapezoid shape;
and sequentially manufacturing a light emitting layer and a cathode layer on the opening region and the spacer region of the pixel defining layer, wherein the light emitting layer and the cathode layer are disconnected from the corresponding spacer region to form a first gap.
10. The method of manufacturing a flexible display panel according to claim 9, wherein the light emitting layer and the cathode layer formed on the spacer region and the light emitting layer and the cathode layer formed in the opening region form a tomographic structure.
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| WO2024000415A1 (en) * | 2022-06-30 | 2024-01-04 | 京东方科技集团股份有限公司 | Display substrate, fabrication method therefor, and display device |
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| CN108493230A (en) * | 2018-05-31 | 2018-09-04 | 京东方科技集团股份有限公司 | Display base plate and its manufacturing method, display panel |
| CN108878689A (en) * | 2018-06-26 | 2018-11-23 | 京东方科技集团股份有限公司 | A kind of substrate and preparation method thereof, display device |
| CN111883557A (en) * | 2019-08-02 | 2020-11-03 | 广东聚华印刷显示技术有限公司 | Flexible display panel and display device |
| CN111370451A (en) * | 2020-03-12 | 2020-07-03 | 京东方科技集团股份有限公司 | Display substrate, preparation method thereof and display device |
| CN112002743A (en) * | 2020-08-12 | 2020-11-27 | 武汉华星光电半导体显示技术有限公司 | OLED display panel and display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2023133916A1 (en) * | 2022-01-13 | 2023-07-20 | 深圳市华星光电半导体显示技术有限公司 | Flexible display panel and manufacturing method therefor |
| WO2024000415A1 (en) * | 2022-06-30 | 2024-01-04 | 京东方科技集团股份有限公司 | Display substrate, fabrication method therefor, and display device |
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