CN211238258U - Display back plate and display panel - Google Patents
Display back plate and display panel Download PDFInfo
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- CN211238258U CN211238258U CN202020103038.2U CN202020103038U CN211238258U CN 211238258 U CN211238258 U CN 211238258U CN 202020103038 U CN202020103038 U CN 202020103038U CN 211238258 U CN211238258 U CN 211238258U
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Abstract
The utility model discloses a show backplate and display panel. According to the utility model discloses display backplate includes: a substrate; the pixel definition layer is positioned on the substrate and comprises a retaining wall and a plurality of pixel openings surrounded by the retaining wall, the retaining wall comprises a light shielding part and a light transmitting part, wherein at least part of the light shielding part is adjacent to and arranged around the pixel openings, and the light transmitting part is used for connecting the light shielding part with each other; and the light-emitting device layer is positioned on the substrate and comprises a plurality of light-emitting structures, and the light-emitting structures are arranged in the pixel openings. According to the utility model discloses display backplate can avoid colour to crosstalk between the light-emitting structure, and can avoid the light reflection that light-emitting structure sent to pixel circuit, improves the display effect who shows the backplate.
Description
Technical Field
The utility model relates to a show the field, concretely relates to show backplate and display panel.
Background
With the development of consumer electronics products such as mobile phones and the like including display panels and cameras, people have higher requirements on the visual experience of the electronic products, and users have higher requirements on screen occupation ratio, so that the comprehensive screen display of electronic equipment receives more and more attention in the industry.
Conventional electronic devices such as mobile phones, tablet computers, etc. need to integrate components such as front-facing cameras, earphones, infrared sensing elements, etc. The accessible sets up the printing opacity district on the display screen, and the printing opacity district entering of external light accessible screen lies in the photosensitive element of screen below, but the colour crosstalk can appear in the light that the light emitting pixel in the printing opacity district sent, and can reflect to pixel circuit, leads to the interior semiconductor of pixel circuit to produce the photocarrier for display screen display is inhomogeneous.
SUMMERY OF THE UTILITY MODEL
The utility model provides a show backplate and display panel can avoid colour to crosstalk between the light-emitting structure, and can avoid the light reflex that light-emitting structure sent to pixel circuit, improves the display effect who shows the backplate.
In a first aspect, an embodiment of the present invention provides a display back plate, including: a substrate; the pixel definition layer is positioned on the substrate and comprises a retaining wall and a plurality of pixel openings surrounded by the retaining wall, the retaining wall comprises a light shielding part and a light transmitting part, wherein at least part of the light shielding part is adjacent to and arranged around the pixel openings, and the light transmitting part is used for connecting the light shielding part with each other; and the light-emitting device layer is positioned on the substrate and comprises a plurality of light-emitting structures, and the light-emitting structures are arranged in the pixel openings.
According to an aspect of the embodiments of the present invention, the light emitting device layer further includes a first electrode layer located on one side of the light emitting structure toward the substrate, the first electrode layer including a plurality of first electrodes, the first electrodes being connected with the light shielding portion to define the pixel openings.
According to an aspect of the embodiments of the present invention, the orthographic projection of the light shielding portion on the substrate covers an edge line of the orthographic projection of the first electrode on the substrate.
According to an aspect of the embodiments of the present invention, an orthographic projection of the surface of the light shielding portion on the side facing the substrate on the substrate covers an orthographic projection of the surface of the light shielding portion on the side facing away from the substrate on the substrate.
According to the utility model discloses an aspect, the quantity of shading portion is a plurality of, and a plurality of shading portions are the array and arrange, and the printing opacity portion extends between a plurality of shading portions.
According to the embodiment of the present invention, the number of the light shielding portions is plural, the plural light shielding portions are arranged to intersect vertically and horizontally, and the light transmission portion is sandwiched between the adjacent light shielding portions.
According to an aspect of the embodiment of the present invention, the display backplane further comprises a support pillar located on a side of the pixel definition layer facing away from the substrate.
According to an aspect of the embodiment of the present invention, the supporting pillar is located on a side of the light transmission portion facing away from the substrate, and the supporting pillar is light-transmitting.
In a second aspect, the embodiments of the present invention provide a display panel, which has a first display area and a second display area, wherein the light transmittance of the first display area is greater than the light transmittance of the second display area, the display panel includes a display back plate according to any of the above embodiments, and the display back plate is located in the first display area.
According to the utility model discloses an aspect shows that the backplate still includes the circuit device layer, and the circuit device layer is located between base plate and the luminescent device layer, and the circuit device layer includes pixel circuit, and pixel circuit is located the second display area.
According to the utility model discloses display back plate, include: the light-emitting device comprises a substrate, a pixel defining layer and a light-emitting device layer, wherein the pixel defining layer comprises a retaining wall and a plurality of pixel openings surrounded by the retaining wall, the retaining wall comprises a light shielding part and a light transmitting part, at least part of the light shielding part is adjacent to and surrounds the pixel openings, and the light transmitting part is used for connecting the light shielding parts; the light emitting device layer includes a plurality of light emitting structures disposed within the pixel openings. The shading part can prevent light emitted by the light emitting structure from transversely spreading to the adjacent light emitting structure so as to avoid color crosstalk between the light emitting structures, and can prevent the light emitted by the light emitting structure from spreading to a pixel circuit arranged between the substrate and the light emitting device layer so as to avoid a semiconductor in the pixel circuit from generating photo-generated carriers due to the light emitted by the light emitting structure, so that the display effect of the display back plate is improved.
According to the utility model discloses display panel has first display area and second display area, and the light transmissivity in first display area is greater than the light transmissivity in second display area, and display panel includes the demonstration backplate according to any one of above-mentioned embodiment, shows that the backplate is located first display area. The back of the display panel in the first display area can be integrated with the photosensitive assembly, so that the photosensitive assembly of a camera can be integrated under a screen, the first display area can display pictures, the display area of the display panel is increased, and the comprehensive screen design is realized.
Drawings
Other features, objects and advantages of the invention will become apparent from the following detailed description of non-limiting embodiments thereof, when read in conjunction with the accompanying drawings, in which like reference characters designate the same or similar parts throughout the figures thereof, and which are not to scale.
Fig. 1 shows a top view of a display backplane according to an embodiment of the present invention;
FIG. 2 shows an enlarged schematic view of an example of region Q of FIG. 1;
FIG. 3 shows a cross-sectional view of an example of the cross-section of FIG. 2 in the direction D-D;
FIG. 4 shows an enlarged schematic view of another example of region Q in FIG. 1;
FIG. 5 is a cross-sectional view showing another example of the direction D-D in FIG. 2;
FIG. 6 shows a cross-sectional view of still another example of the cross-section in the direction D-D of FIG. 2;
fig. 7 shows a top view of a display panel according to an embodiment of the invention;
fig. 8 is a partial cross-sectional view of a display backplane in a display panel according to an embodiment of the present invention.
In the figure:
10-a display backplane;
100-a substrate;
200-a pixel definition layer; 220-retaining wall; 221-a light shielding portion; 222-a light-transmitting portion; 230-pixel openings;
300-a light emitting device layer; 310-a light emitting structure; 340-a first electrode layer; 341-first electrode; 350-a second electrode layer;
400-support column;
500-a circuit device layer;
AA 1-first display area; AA 2-second display area; NA-non-display area.
Detailed Description
The features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the invention by illustrating examples of the invention.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
It will be understood that when a layer, region or layer is referred to as being "on" or "over" another layer, region or layer in describing the structure of the component, it can be directly on the other layer, region or layer or intervening layers or regions may also be present. Also, if the component is turned over, one layer or region may be "under" or "beneath" another layer or region.
Referring to fig. 1 to 3 together, fig. 1 is a top view of a display back plate according to an embodiment of the present invention, fig. 2 is an enlarged schematic view of an example of a region Q in fig. 1, and fig. 3 is a cross-sectional view of an example of a direction D-D in fig. 2.
An embodiment of the present invention provides a display back plate 10, wherein the display back plate 10 can be an Organic Light Emitting Diode (OLED) display back plate.
The display backplane 10 may include a substrate 100, a pixel definition layer 200, and a light emitting device layer 300.
The substrate 100 may include a transparent insulating material. The substrate 100 may include one or more layers. The substrate 100 may include a flexible transparent organic material layer, such as a polyimide-based resin layer. The substrate 100 may further include an inorganic material layer, such as a silicon oxide layer, a silicon nitride layer. The inorganic material layer can block the penetration of water and oxygen.
The pixel definition layer 200 is disposed on the substrate 100 and includes a wall 220 and a plurality of pixel openings 230 surrounded by the wall 220. The arrangement of the pixel openings 230 matches the arrangement of the pixels of the display backplane 10. The retaining wall 220 includes a light-shielding portion 221 and a light-transmitting portion 222, wherein at least a portion of the light-shielding portion 221 is disposed adjacent to and around the pixel opening 230, and the light-transmitting portion 222 connects the light-shielding portions 221 to each other. The light-transmitting portion 222 can transmit light between the substrate 100 side and the substrate 100 side of the light-transmitting portion 222.
The light emitting device layer 300 is positioned on the substrate 100 and includes a plurality of light emitting structures 310, and the light emitting structures 310 are disposed in the pixel openings 230. The light emitting structure 310 can emit light in a direction away from the substrate 100. The light shielding portion 221 can prevent light emitted from the light emitting structure 310 from propagating to the light transmitting portion 222.
According to the embodiment of the present invention, the retaining wall 220 includes a light shielding portion 221 and a light transmitting portion 222, wherein at least a portion of the light shielding portion 221 is disposed adjacent to and around the pixel opening 230, and the light transmitting portion 222 connects the light shielding portion 221 to each other. The light shielding portion 221 can prevent light emitted from the light emitting structures 310 from laterally propagating to adjacent light emitting structures 310 to avoid color crosstalk between the light emitting structures 310, and can prevent light emitted from the light emitting structures 310 from propagating to pixel circuits disposed between the substrate 100 and the light emitting device layer 300 to avoid photo-generated carriers generated by semiconductors in the pixel circuits due to the light emitted from the light emitting structures 310, so as to improve the display effect of the display back plate 10.
Specifically, each pixel opening 230 has a central axis, and the shape of the pixel opening 230 may be adjusted according to actual design. Wherein, the shape of the cross section of the pixel opening 230 perpendicular to the central axis of the pixel opening 230 may be circular, elliptical, polygonal, etc.; the shape of the cross section of the pixel opening 230 passing through the central axis of the pixel opening 230 may be rectangular, trapezoidal, a shape having arc-shaped sides, or the like. In the embodiment shown in fig. 3, the cross-section of the pixel opening 230 through the central axis of the pixel opening 230 is rectangular in shape.
The color of light emitted by the light emitting structure 310 may correspond to three primary colors. Herein, the three primary colors are red, green and blue. The light emitting structure 310 may emit monochromatic light. For example, the light emitting structure 310 may include a red light emitting structure 310, a green light emitting structure 310, and a blue light emitting structure 310. It is understood that the color of the light emitted from the light emitting structure 310 may not be limited to red, green, blue, but may also be yellow or other colors.
The shape of the light emitting structure 310 includes at least one selected from the group consisting of a circle, an ellipse, a dumbbell, a gourd, and a rectangle. For example, in the embodiment shown in fig. 2, the light emitting structure 310 is rectangular in shape.
The light shielding portion 221 may be light absorbing, for example, the light shielding portion 221 may be composed of black organic glue. The light-transmitting portion 222 may be light-transmitting, for example, the light-transmitting portion 222 may be formed of a transparent organic glue.
Referring to fig. 2 and 4 together, fig. 4 is an enlarged schematic view of another example of the region Q in fig. 1.
In some alternative embodiments, as shown in fig. 2, the number of the light shielding portions 221 is multiple, and the multiple light shielding portions 221 are arranged in an array. Each of the light shielding portions 221 is disposed around one of the light emitting structures 310. The light-transmitting portion 222 extends between the plurality of light-shielding portions 221. That is, the light shielding portions 221 are spaced apart from each other by the light transmitting portion 222. In the present embodiment, the light shielding portion 221 is only disposed around the light emitting structure 310, and the remaining portion is the light transmitting portion 222, so that the area occupied by the light transmitting portion 222 is increased as much as possible while preventing the light emitted by the light emitting structure 310 from propagating to the light transmitting portion 222 and the adjacent light emitting structure 310, thereby improving the light transmitting effect of the display back plate 10.
In other alternative embodiments, as shown in fig. 4, the number of the light shielding portions 221 is multiple, and the multiple light shielding portions 221 are arranged in a criss-cross manner. The plurality of light emitting structures 310 are arranged in an array. The light shielding portions 221 extend between the light emitting structures 310 of two adjacent rows, and the light shielding portions 221 extend between the light emitting structures 310 of two adjacent columns. The number of the light shielding portions 221 between the light emitting structures 310 of two adjacent rows may be two, and two light shielding portions 221 are respectively disposed adjacent to one light emitting structure 310 in the light emitting structures 310 of the two adjacent rows. The number of the light shielding portions 221 between the light emitting structures 310 of the adjacent two columns may be two, and two light shielding portions 221 are respectively disposed adjacent to one light emitting structure 310 of the light emitting structures 310 of the adjacent two columns. The light transmitting portions 222 are interposed between adjacent light shielding portions 221. Specifically, the light-transmitting portion 222 may be interposed between two adjacent light-shielding portions 221 between the light-emitting structures 310 of two adjacent rows or two adjacent columns. In the present embodiment, the light shielding portions 221 are arranged criss-cross, so that the connecting leads between the light emitting structure 310 and the pixel circuit are arranged corresponding to the light shielding portions 221.
Referring also to fig. 5, fig. 5 is a cross-sectional view of another example of the cross-sectional view taken along line D-D of fig. 2.
The light emitting device layer 300 may further include a first electrode layer 340, the first electrode layer 340 being located at a side of the light emitting structure 310 facing the substrate 100. Further, the light emitting device layer 300 may further include a second electrode layer 350, and the second electrode layer 350 is located on a side of the light emitting structure 310 facing away from the substrate 100.
The first electrode layer 340 is an anode. The first electrode layer 340 may be a reflective electrode including a first light-transmitting conductive layer, a reflective layer on the first light-transmitting conductive layer, and a second light-transmitting conductive layer on the reflective layer. The first and second transparent conductive layers may be Indium Tin Oxide (ITO), Indium Zinc Oxide (IZO), etc., and the reflective layer may be a metal layer, such as made of silver. The light emitting structure 310 may be an OLED light emitting material layer. The light emitting structure 310 may further include at least one of a hole injection layer, a hole transport layer, an electron injection layer, or an electron transport layer according to design requirements. The second electrode layer 350 is a cathode layer. The second electrode layer 350 may be a light-transmitting electrode. In some embodiments, the second electrode layer 350 includes an indium tin oxide layer or an indium zinc oxide layer.
The first electrode layer 340 includes a plurality of first electrodes 341. Each of the first electrodes 341 may be disposed to match with the light emitting structure 310. The first electrode 341 is connected with the light shielding portion 221 to define the pixel opening 230. Since the first electrode 341 is a reflective electrode, the first electrode 341 is opaque. The first electrode 341 is connected to the light shielding portion 221 and constitutes a light shielding structure that transmits light only toward the side away from the substrate 100, and can prevent light emitted from the light emitting structure 310 from propagating toward the light transmitting portion 222 and toward the substrate 100.
In some alternative embodiments, the orthographic projection of the light shielding portion 221 on the substrate 100 covers an edge line of the orthographic projection of the first electrode 341 on the substrate 100. The first electrode 341 extends into the light shielding portion 221, and the light shielding effect at the intersection between the first electrode layer 340 and the light shielding portion 221 can be increased.
In some alternative embodiments, the orthographic projection of the surface of the light shielding portion 221 facing the substrate 100 side on the substrate 100 covers the orthographic projection of the light shielding portion 221 facing away from the substrate 100 side on the substrate 100. The size of the end of the pixel opening 230 facing away from the substrate 100 is greater than or equal to the size of the end of the pixel opening 230 facing towards the substrate 100, so as to increase the light extraction effect of the light emitting structure 310 in the pixel opening 230; and the light-transmitting portion 222 is easily provided in addition to the light-shielding portion 221. In the present embodiment, the cross-section of the pixel opening 230 passing through the central axis of the pixel opening 230 has a rectangular or trapezoidal shape, specifically, an isosceles trapezoidal shape.
Referring also to fig. 6, fig. 6 is a cross-sectional view of another example of the cross-sectional view taken along line D-D of fig. 2.
In some alternative embodiments, the display backplane 10 further comprises support posts 400. The supporting posts 400 are located on a side of the pixel defining layer 200 facing away from the substrate 100. Specifically, the supporting column 400 is located on a side of the light-transmitting portion 222 facing away from the substrate 100. The supporting posts 400 are light-transmissive so that the supporting posts 400 do not affect the light-transmissive effect of the light-transmissive portion 222. The material of the supporting column 400 and the material of the light-transmitting portion 222 may be the same.
Referring to fig. 7 and 8, fig. 7 is a top view of a display panel according to an embodiment of the present invention, and fig. 8 is a partial cross-sectional view of a display back plate in the display panel according to an embodiment of the present invention.
An embodiment of the present invention further provides a display panel, which can be an Organic Light Emitting Diode (OLED) display panel.
The embodiment of the utility model provides a display panel has first display area AA1 and second display area AA2 and around the non-display area NA of first display area AA1, second display area AA2, and the light transmissivity of first display area AA1 is greater than the light transmissivity of second display area AA 2.
Herein, it is preferable that the light transmittance of the first display area AA1 is 15% or more. In order to ensure that the light transmittance of the first display area AA1 is greater than 15%, even greater than 40%, or even higher, the light transmittance of at least some functional film layers of the display panel 100 in this embodiment is greater than 80%, and even greater than 90%.
The shape of the first display area AA1 may be circular, oval, rectangular, etc.
The embodiment of the utility model provides a display panel includes according to the demonstration backplate 10 of any preceding embodiment, shows that backplate 10 is located first display area AA 1.
According to the utility model discloses display panel, the light transmissivity of first display area AA1 is greater than the light transmissivity of second display area AA2, shows that backplate 10 is located first display area AA 1. The back of the display panel in the first display area AA1 can be integrated with a photosensitive assembly, so that the photosensitive assembly of a camera can be integrated under a screen, meanwhile, the first display area AA1 can display pictures, the display area of the display panel is increased, and the comprehensive screen design is realized.
In some alternative embodiments, the display backplane 10 further comprises a circuit device layer 500, the circuit device layer 500 being located between the substrate 100 and the light emitting device layer 300, the circuit device layer 500 comprising pixel circuits. The pixel circuit is electrically connected to the first electrode 341. The pixel circuits are located in the second display area AA 2.
Here, the pixel circuit may be any one of a 2T1C circuit, a 7T1C circuit, a 7T2C circuit, or a 9T1C circuit. Herein, the "2T 1C circuit" refers to a pixel circuit including 2 thin film transistors (T) and 1 capacitor (C) in the pixel circuit, and the other "7T 1C circuit", "7T 2C circuit", "9T 1C circuit", and the like are analogized.
According to the utility model discloses display panel, pixel circuit are located second display area AA2, can further improve the light transmissivity of first display area AA1, are convenient for can the integrated photosensitive assembly at the back of first display area AA1, realize for example that the photosensitive assembly's of camera screen is integrated down.
It is understood that the photosensitive member may be an image capturing device for capturing external image information. For example, the photosensitive component may be a Complementary Metal Oxide Semiconductor (CMOS) image capture Device, a Charge-coupled Device (CCD) image capture Device, or the like. The photosensitive component may also not be limited to an image capture device, and may be, for example, an infrared sensor, a proximity sensor, an infrared lens, a flood sensing element, an ambient light sensor, and a dot matrix projector.
In accordance with the embodiments of the present invention as set forth above, these embodiments do not set forth all of the details nor limit the invention to the specific embodiments described. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical application, to thereby enable others skilled in the art to best utilize the invention and its various embodiments with various modifications as are suited to the particular use contemplated. The present invention is limited only by the claims and their full scope and equivalents.
Claims (10)
1. A display backplane, comprising:
a substrate;
the pixel definition layer is positioned on the substrate and comprises a retaining wall and a plurality of pixel openings surrounded by the retaining wall, the retaining wall comprises a light shielding part and a light transmitting part, wherein at least part of the light shielding part is adjacent to and surrounds the pixel openings, and the light transmitting part is used for connecting the light shielding part with each other;
a light emitting device layer on the substrate and including a plurality of light emitting structures disposed within the pixel openings.
2. The display backplane of claim 1, wherein the light emitting device layer further comprises a first electrode layer on a side of the light emitting structure facing the substrate, the first electrode layer comprising a plurality of first electrodes connected with the light blocking portion to define the pixel openings.
3. A display backplane according to claim 2, wherein an orthographic projection of the light shielding portion on the substrate covers edge lines of the orthographic projection of the first electrode on the substrate.
4. A display backplane according to claim 1, wherein an orthographic projection of a surface of the light shielding portion facing the substrate side on the substrate covers an orthographic projection of a surface of the light shielding portion facing away from the substrate side on the substrate.
5. The display backplane of claim 1, wherein the number of the light blocking portions is plural, the plural light blocking portions are arranged in an array, and the light transmitting portion extends between the plural light blocking portions.
6. The display back plate according to claim 1, wherein the number of the light shielding portions is plural, the plural light shielding portions are arranged to intersect vertically and horizontally, and the light transmitting portion is interposed between the adjacent light shielding portions.
7. The display backplane of claim 1, further comprising support posts on a side of the pixel definition layer facing away from the substrate.
8. The display backplane of claim 7, wherein the support posts are located on a side of the light-transmissive portion facing away from the substrate, the support posts being light-transmissive.
9. A display panel having a first display region and a second display region, the light transmittance of the first display region being greater than the light transmittance of the second display region, the display panel comprising the display backplane according to any one of claims 1 to 8, the display backplane being located in the first display region.
10. The display panel of claim 9, wherein the display backplane further comprises a circuit device layer between the substrate and the light emitting device layer, the circuit device layer comprising pixel circuits, the pixel circuits being located in the second display region.
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| CN202020103038.2U CN211238258U (en) | 2020-01-16 | 2020-01-16 | Display back plate and display panel |
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| CN202020103038.2U CN211238258U (en) | 2020-01-16 | 2020-01-16 | Display back plate and display panel |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112258986A (en) * | 2020-10-21 | 2021-01-22 | 合肥维信诺科技有限公司 | Light-transmitting display panel, preparation method and display device |
| CN113690278A (en) * | 2021-08-02 | 2021-11-23 | 合肥维信诺科技有限公司 | Display panel and display device |
| WO2023070408A1 (en) * | 2021-10-27 | 2023-05-04 | 京东方科技集团股份有限公司 | Display panel and manufacturing method therefor, and display device |
-
2020
- 2020-01-16 CN CN202020103038.2U patent/CN211238258U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112258986A (en) * | 2020-10-21 | 2021-01-22 | 合肥维信诺科技有限公司 | Light-transmitting display panel, preparation method and display device |
| CN113690278A (en) * | 2021-08-02 | 2021-11-23 | 合肥维信诺科技有限公司 | Display panel and display device |
| WO2023010902A1 (en) * | 2021-08-02 | 2023-02-09 | 合肥维信诺科技有限公司 | Display panel and display device |
| CN113690278B (en) * | 2021-08-02 | 2024-02-09 | 合肥维信诺科技有限公司 | Display panel and display device |
| WO2023070408A1 (en) * | 2021-10-27 | 2023-05-04 | 京东方科技集团股份有限公司 | Display panel and manufacturing method therefor, and display device |
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