Display panel and display device

Abstract

Embodiments of the present application provide a display panel and a display device, which can improve the spatial brightness uniformity of the panel. The display panel comprises a substrate; a pixel definition layer on the substrate; the pixel definition layer comprises a plurality of first openings arranged in an array, one first opening corresponding to one sub-pixel; a plurality of light emitting elements, the plurality of light emitting elements being respectively located in the plurality of first openings; a shielding structure on the side of the pixel definition layer away from the substrate, the shielding structure comprising a plurality of second openings, the projections of the plurality of second openings on the substrate respectively overlapping the projections of the plurality of first openings on the substrate; a plurality of color resist respectively located in the plurality of second openings; the size of the second opening corresponding to at least part of the sub-pixels in a third direction is greater than the size of the second opening in a first direction and the size of the second opening in a second direction; the first direction is the row direction of the array arrangement, the second direction is the column direction of the array arrangement, the third direction has a first included angle with the first direction, the first included angle is greater than 0° and less than 90°.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a display panel and a display device. BACKGROUND

[0002] An important component for electronic devices to realize display function is a display panel. The display panel generally includes an organic light emitting diode (OLED) display panel, a liquid crystal display (LCD) and the like.

[0003] The OLED display panel has the advantages of self-emission, wide viewing angle, high contrast, low energy consumption, light weight, thin thickness, easy bending and the like, and is widely used in mobile phones, tablet computers, digital video cameras, notebook computers and other straight terminal devices or folding terminal devices.

[0004] With the development of display technology, the size of the OLED display panel gradually increases, and the large-size OLED display panel has a large viewing angle. Due to the microcavity effect of the organic light emitting element in the OLED display panel, the brightness of the electroluminescence spectrum of the organic light emitting element decreases with the increase of the viewing angle. When the human eye looks at the OLED display screen, there is a problem of uneven spatial brightness because the viewing angles corresponding to different spatial regions are different, especially the straight edge and the curved edge (i.e. the R corner region) connecting two adjacent straight edges of the flexible display panel of the large-size folding terminal device are dark. SUMMARY

[0005] In order to solve the above technical problems, the present application provides a display panel and a display device. The spatial brightness uniformity of the display panel can be improved.

[0006] In a first aspect, an embodiment of the present application provides a display panel, the display panel comprising: a substrate; a pixel definition layer located on the substrate; the pixel definition layer comprising a plurality of first openings arranged in an array, one first opening corresponding to one sub-pixel; a plurality of light emitting elements, the plurality of light emitting elements being respectively located in the plurality of first openings; the plurality of light emitting elements comprising at least a plurality of red light emitting elements, a plurality of green light emitting elements, and a plurality of blue light emitting elements; a brightness adjusting structure located on a side of the pixel definition layer away from the substrate; the brightness adjusting structure comprising a shielding structure and a plurality of color resistors; the shielding structure comprising a plurality of second openings, projections of the plurality of second openings on the substrate respectively overlapping projections of the plurality of first openings on the substrate; the plurality of color resistors being respectively located in the plurality of second openings; the plurality of color resistors comprising at least a plurality of red color resistors, a plurality of green color resistors, and a plurality of blue color resistors, the plurality of red color resistors respectively corresponding to the plurality of red light emitting elements, the plurality of green color resistors respectively corresponding to the plurality of green light emitting elements, and the plurality of blue color resistors respectively corresponding to the plurality of blue light emitting elements; wherein a size of the second opening corresponding to at least part of the sub-pixel in a third direction is greater than a size of the second opening in a first direction, and greater than a size of the second opening in a second direction; the first direction is a row direction of the array arrangement, the second direction is a column direction of the array arrangement, and the third direction has a first included angle with the first direction, wherein the first included angle is greater than 0° and less than 90°.

[0007] The color resistor is arranged to absorb ambient light and reduce reflectivity, and also allows light emitted by the light emitting element to be smoothly emitted. After the light passes through the color resistor, the spectrum of the emitted light is narrower, the color gamut is wider, and the display effect of the display panel is improved. The shielding structure is located between two adjacent color resistors, which avoids shielding the light emitted by the light emitting element, and also shields ambient light to reduce reflectivity. When the display panel is in an off-screen state, an all-black effect can be achieved. Compared with arranging a polarizer to reduce reflectivity, the display panel provided by the embodiment of the present application is more lightweight and has a low cost. Further, by arranging the second opening of the shielding structure to have a size in a diagonal direction (third direction) greater than a size in a horizontal direction (first direction) and a size in a vertical direction (second direction), the shielding of the light emitted by the light emitting element in the diagonal direction can be reduced, the light in the diagonal direction can be increased, and the brightness in the diagonal direction can be improved. That is, by increasing the brightness in the diagonal direction, the decrease in the brightness of the electroluminescent spectrum of the organic light emitting element with the increase in the viewing angle due to the microcavity effect of the organic light emitting element in the OLED display panel is balanced, the spatial brightness consistency of the display panel is improved, the problem of uneven spatial brightness caused by different viewing angles corresponding to different spatial regions is solved, and the problem of dark regions in the right-angle edge region of the flexible display panel of a large-size foldable terminal device and the curved edge region (i.e., the R-angle region) connecting two adjacent right-angle edge regions is solved.

[0008] Exemplarily, the at least partial sub-pixels can be sub-pixels of one color, sub-pixels of two colors, or sub-pixels of three colors; or can be a plurality of sub-pixels in a preset region, or can be all sub-pixels in the display panel, and the embodiments of the present application do not make any limitation thereon, and a person skilled in the art can select the corresponding second openings corresponding to the sub-pixels according to the actual situation for corresponding design (i.e., the size of the second openings corresponding to these sub-pixels in the third direction is greater than the size of the second openings in the first direction, and greater than the size of the second openings in the second direction; the first direction is the row direction of the array arrangement).

[0009] Exemplarily, the first included angle is, for example, 30°, 35°, 40°, 45°, 50°, 55°, or 60°, etc.

[0010] Exemplarily, the plurality of red color resistances correspond to the plurality of red light emitting elements respectively, i.e., the projections of the plurality of red color resistances on the substrate overlap (overlap, partially overlap, or one is located in the other) with the projections of the plurality of red light emitting elements on the substrate; the plurality of green color resistances correspond to the plurality of green light emitting elements respectively, i.e., the projections of the plurality of green color resistances on the substrate overlap (overlap, partially overlap, or one is located in the other) with the projections of the plurality of green light emitting elements on the substrate; and the plurality of blue color resistances correspond to the plurality of blue light emitting elements respectively, i.e., the projections of the plurality of blue color resistances on the substrate overlap (overlap, partially overlap, or one is located in the other) with the projections of the plurality of blue light emitting elements on the substrate.

[0011] According to the first aspect, the sub-pixel corresponding to the first opening where the red light emitting element is located is a red sub-pixel, the sub-pixel corresponding to the first opening where the green light emitting element is located is a green sub-pixel, and the sub-pixel corresponding to the first opening where the blue light emitting element is located is a blue sub-pixel; the second opening corresponding to at least one of the sub-pixels of the same color located in different columns and adjacent to each other is symmetrically arranged about the second direction; and / or, the second opening corresponding to at least one of the sub-pixels of the same color located in different rows and adjacent to each other is symmetrically arranged about the second direction.

[0012] Because the display device such as a mobile phone is generally rectangular or square, and the shape of the corresponding display panel is also rectangular or square, when the display panel is rectangular or square, the display panel generally has four R corner regions, and two of the R corner regions are symmetrically arranged about the first direction, and the other two R corner regions are symmetrically arranged about the second direction. By symmetrically arranging the second opening corresponding to at least one of the sub-pixels of the same color located in different columns and adjacent to each other about the second direction; and / or, symmetrically arranging the second opening corresponding to at least one of the sub-pixels of the same color located in different rows and adjacent to each other about the second direction, the problem of darkening of each R corner region can be improved.

[0013] For example, the second openings corresponding to at least one of the sub-pixels of the same color located in different columns and adjacent to each other are symmetrically arranged about the second direction. For example, the second openings corresponding to one color of sub-pixels (such as green, red or blue) located in different columns and adjacent to each other are symmetrically arranged about the second direction. For another example, the second openings corresponding to two colors of sub-pixels (such as green and red, green and blue or red and blue) located in different columns and adjacent to each other are symmetrically arranged about the second direction. For yet another example, the second openings corresponding to three colors of sub-pixels (such as green, red and blue) located in different columns and adjacent to each other are symmetrically arranged about the second direction.

[0014] For example, the second openings corresponding to at least one of the sub-pixels of the same color located in different rows and adjacent to each other are symmetrically arranged about the second direction. For example, the second openings corresponding to one color of sub-pixels (such as green, red or blue) located in different rows and adjacent to each other are symmetrically arranged about the second direction. For another example, the second openings corresponding to two colors of sub-pixels (such as green and red, green and blue or red and blue) located in different rows and adjacent to each other are symmetrically arranged about the second direction. For yet another example, the second openings corresponding to three colors of sub-pixels (such as green, red and blue) located in different rows and adjacent to each other are symmetrically arranged about the second direction.

[0015] For example, the second openings corresponding to at least one of the sub-pixels of the same color located in different columns and adjacent to each other are symmetrically arranged about the second direction, and the second openings corresponding to at least one of the sub-pixels of the same color located in different rows and adjacent to each other are symmetrically arranged about the second direction. That is, the combination of the above two examples.

[0016] According to the first aspect, or any one of the implementations of the above first aspect, the second openings corresponding to green sub-pixels located in different columns and adjacent to each other are symmetrically arranged about the second direction; and the second openings corresponding to green sub-pixels located in different rows and adjacent to each other are symmetrically arranged about the second direction. Since the brightness of green sub-pixels is relatively high, when the second openings corresponding to green sub-pixels are improved accordingly, a smaller number of second openings need to change the size in the third direction to improve the problem of dark R-angle regions.

[0017] According to the first aspect, or any one of the implementations of the first aspect, the second openings corresponding to the green sub-pixels located in different columns and adjacent to each other are symmetrically arranged about the second direction; and the second openings corresponding to the green sub-pixels located in different rows and adjacent to each other are symmetrically arranged about the second direction, the second openings corresponding to the red sub-pixels located in different columns and adjacent to each other are symmetrically arranged about the second direction; and the second openings corresponding to the red sub-pixels located in different rows and adjacent to each other are symmetrically arranged about the second direction. Since the brightness of the green sub-pixels and the red sub-pixels is relatively high, when the second openings corresponding to the green sub-pixels and the second openings corresponding to the red sub-pixels are improved, the size of a smaller number of second openings in the third direction is changed to improve the problem of the dark R-corner region.

[0018] According to the first aspect, or any one of the implementations of the first aspect, the second openings corresponding to the red sub-pixels located in different columns and adjacent to each other are symmetrically arranged about the second direction; and the second openings corresponding to the red sub-pixels located in different rows and adjacent to each other are symmetrically arranged about the second direction, the second openings corresponding to the blue sub-pixels located in different columns and adjacent to each other are symmetrically arranged about the second direction; and the second openings corresponding to the blue sub-pixels located in different rows and adjacent to each other are symmetrically arranged about the second direction. The problem of the dark R-corner region is further improved.

[0019] According to the first aspect, or any one of the implementations of the first aspect, the substrate is divided into a central display area and an edge display area surrounding the central display area, the edge display area includes an edge display sub-area, the edge display sub-area is the area farthest from the central display area in the edge display area; the size of the second opening corresponding to the sub-pixel in the edge display sub-area in the third direction is greater than the size of the second opening in the first direction, and greater than the size of the second opening in the second direction. That is, only the second openings corresponding to the sub-pixels in the dark area are improved, that is, the size of the second opening in the third direction in the R-corner region is increased, and other areas are not improved, so that the brightness in the R-corner region is improved when the viewing angle is different.

[0020] According to the first aspect, or any one of the implementations of the first aspect, the size of the second opening in the third direction gradually increases from the central display area to the edge display sub-area. In this way, the brightness gradually increases from the central display area to the edge display sub-area, avoiding the problem of brightness mutation, and further improving the brightness uniformity of the display panel.

[0021] According to a first aspect, or any one of the implementations of the first aspect, the second opening corresponding to the at least partial sub-pixel has a size in the first direction different from a size in the second direction. By setting the size of the second opening in the first direction and the size of the second opening in the second direction, the brightness of a certain right-angle edge region (which is far away from other right-angle edge regions) is improved, and the uniformity of the brightness of the display panel is further improved.

[0022] According to a first aspect, or any one of the implementations of the first aspect, a direction of a line connecting two end points farthest apart in the display panel is a third direction. The viewing angle of the two end points farthest apart in the display panel is the largest, so the brightness here is the darkest. By increasing the size of the second opening in this direction, the application reduces the shielding of the light emitted by the light-emitting element in this direction by the shielding structure, so that the light in this direction increases, and the brightness in this direction is improved.

[0023] Illustratively, the two end points farthest apart in the display panel can be the two end points farthest apart in the substrate, but this does not constitute a limitation on the application.

[0024] According to a first aspect, or any one of the implementations of the first aspect, the first included angle is greater than or equal to 35° and less than or equal to 55°. This setting makes the display panel have a wider range of applications.

[0025] Illustratively, the first included angle is 35°, 37°, 39°, 41°, 43°, 45°, 47°, 49°, 51°, 53°, or 55°, etc.

[0026] According to a first aspect, or any one of the implementations of the first aspect, the size of the second opening corresponding to the at least partial sub-pixel in the third direction and the size of the second opening in the first direction satisfy 1.1≤L1 / L2≤2.5; and / or, the size of the second opening corresponding to the at least partial sub-pixel in the third direction and the size of the second opening in the second direction satisfy 1.1≤L1 / L3≤2.5; wherein L1 is the size of the second opening corresponding to the at least partial sub-pixel in the third direction, L2 is the size of the second opening corresponding to the at least partial sub-pixel in the first direction, and L3 is the size of the second opening corresponding to the at least partial sub-pixel in the second direction. This setting is neither because the size of the second opening 13211 in the third direction is too large, nor because the size of the second opening in the third direction is too small, so that the material of the shielding structure between the two adjacent second openings is not enough to connect the two adjacent second openings together.

[0027] According to a first aspect, or any possible implementation mode of the first aspect, a shape of a projection of the second opening corresponding to the at least part of the sub-pixel on the substrate comprises an ellipse, an ellipse-like shape, an octagon-like shape, an octagon, or the like.

[0028] According to the first aspect, or any possible implementation mode of the first aspect, the projections of the plurality of first openings on the substrate are respectively located within the projections of the plurality of second openings on the substrate. In this way, the shielding structure can avoid shielding the light emitted by the light emitting element, so that more light can be emitted through the second openings, which is beneficial to improve the display brightness of the display panel.

[0029] According to a second aspect, the embodiments of the present application provide a display device, which comprises the display panel of the first aspect and any possible implementation mode of the first aspect.

[0030] The second aspect and any possible implementation mode of the second aspect correspond to the first aspect and any possible implementation mode of the first aspect respectively. The technical effects of the second aspect and any possible implementation mode of the second aspect can refer to the technical effects of the first aspect and any possible implementation mode of the first aspect, which will not be described here. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 A structural schematic diagram of a display device provided by the embodiments of the present application is shown in the figure;

[0032] Figure 2 A structural schematic diagram of a display device provided by the embodiments of the present application is shown in the figure; Figure 1 An exploded view of the display device shown in the figure;

[0033] Figure 3 A structural schematic diagram of a display panel provided by the embodiments of the present application is shown in the figure;

[0034] Figure 4 A structural schematic diagram of another display panel provided by the embodiments of the present application is shown in the figure;

[0035] Figure 5 A structural schematic diagram of another display panel provided by the embodiments of the present application is shown in the figure;

[0036] Figure 6 A film layer structure diagram of a display panel provided by the embodiments of the present application is shown in the figure;

[0037] Figure 7 A pixel arrangement mode provided by the embodiments of the present application is shown in the figure;

[0038] Figure 8 Another pixel arrangement mode provided by the embodiments of the present application is shown in the figure;

[0039] Figure 9A film layer structure diagram of another display panel provided in the embodiments of this application;

[0040] Figure 10 A top view of a shielding structure provided in an embodiment of this application;

[0041] Figure 11 for Figure 10 A schematic diagram of a second opening in the shielding structure shown;

[0042] Figure 12 A top view of yet another shading structure provided in an embodiment of this application;

[0043] Figure 13 A top view of yet another shading structure provided in an embodiment of this application;

[0044] Figure 14 A top view of yet another shading structure provided in an embodiment of this application;

[0045] Figure 15 A positional relationship diagram of a substrate and a second opening provided for an embodiment of this application;

[0046] Figure 16 Another positional relationship diagram of the substrate and the second opening provided in the embodiments of this application;

[0047] Figure 17 Another positional relationship diagram between the substrate and the second opening provided in an embodiment of this application;

[0048] Figure 18 This is a schematic diagram of another shielding structure provided in an embodiment of this application;

[0049] Figure 19 This is a schematic diagram of another shielding structure provided in an embodiment of this application;

[0050] Figure 20 This is a schematic diagram of another shielding structure provided in an embodiment of this application;

[0051] Figure 21 A comparison diagram of the viewing angle brightness provided in the embodiments of this application and the simulation of the embodiments of this application;

[0052] Figure 22 A flowchart illustrating a method for manufacturing a display panel according to an embodiment of this application;

[0053] Figure 23a This is a schematic diagram illustrating a process for manufacturing a display panel, as provided in an embodiment of this application.

[0054] Figure 23b This is a schematic diagram illustrating a process for manufacturing a display panel, as provided in an embodiment of this application.

[0055] Figure 23c A process schematic for preparing a display panel is provided for embodiments of the present application;

[0056] Figure 23d A process schematic for preparing a display panel is provided for embodiments of the present application;

[0057] Figure 23e A process schematic for preparing a display panel is provided for embodiments of the present application;

[0058] Figure 23f A process schematic for preparing a display panel is provided for embodiments of the present application;

[0059] Figure 23g A process schematic for preparing a display panel is provided for embodiments of the present application. DETAILED DESCRIPTION

[0060] The technical solutions in embodiments of the present application will be described clearly and completely below with reference to the drawings in embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, but not all embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0061] The term “and / or” in the present application is merely used to describe an association relationship of associated objects, and indicates that there can be three relationships, for example, A and / or B can represent the three cases of existence of A alone, existence of A and B simultaneously, and existence of B alone.

[0062] The terms “first” and “second” and the like in the description and claims of the present application are used to distinguish different objects, and are not used to describe a specific order of the objects. For example, the first target object and the second target object are used to distinguish different target objects, and are not used to describe a specific order of the target objects.

[0063] In the embodiments of the present application, the words “exemplary” or “for example” are used to mean serving as an example, instance, or illustration. Any embodiment or design presented as “exemplary” or “for example” in the embodiments of the present application should not be construed as being more preferred or advantageous than other embodiments or designs. In fact, the use of the words “exemplary” or “for example” is intended to present concepts in a particular manner.

[0064] In the description of the embodiments of the present application, unless otherwise specified, the meaning of “a plurality of” is two or more. For example, a plurality of processing units means two or more processing units; a plurality of systems means two or more systems.

[0065] This application provides a display device, which can be a mobile phone, laptop computer, tablet computer, personal digital assistant (PDA), in-vehicle computer, television, smart wearable device (such as smartwatch, smart bracelet, smart head-mounted display, smart glasses), smart home device, or other electronic device including a display panel. This application does not specifically limit the specific form of the above-mentioned display device. For ease of explanation, the following description uses a mobile phone as an example.

[0066] See Figure 1 , Figure 1 This is a schematic diagram of the structure of a display device provided in an embodiment of this application. Figure 1 As shown, the mobile phone 100 includes a display module 10, a back cover (also known as a battery cover) 20, and a mid-frame 30.

[0067] Understandable Figure 1 In this embodiment, the mobile phone 100 is shaped like a rectangular tablet. In other alternative embodiments, the display device may also be square, circular, or elliptical. Of course, the display device may also be a foldable display device (such as a foldable mobile phone).

[0068] See Figure 2 , Figure 2 for Figure 1 The exploded view of the display device is shown. Figure 2 As shown, the display module 10 includes a cover plate 11 and a display panel 12 stacked together. The cover plate 11 protects the display panel 12, for example. The display panel 12 includes, for example, an OLED display panel. It should be noted that the type of display panel 12 is not limited to this, and those skilled in the art can choose according to the actual situation. The following examples all use an OLED display panel as an example for illustration.

[0069] The back cover 20 is located on the side of the display panel 12 opposite to the cover plate 11. The material of the back cover 20 may include, for example, opaque materials such as plastic, vegan leather, or fiberglass; or it may include light-transmitting materials such as glass. This application embodiment does not limit the material of the back cover 20.

[0070] The middle frame 30 is located between the cover plate 11 and the back cover 20, and the middle frame 30 includes an annular appearance piece 31 and a support piece 32 located in the annular appearance piece 31 and between the display panel 12 and the back cover 20. The cover plate 11, the annular appearance piece 31 and the back cover 20 can surround a containing cavity. The containing cavity is provided with the display panel 12, a printed circuit board (PCB) 40, a flexible printed circuit (FPC) 50, a battery 60, a speaker module 70 and structures (not shown in the figure) such as a system on chip (SoC) and an application processor (AP) provided on the PCB 40, and the structures in the containing cavity are supported by the support piece 32 of the middle frame 30. For example, the display module 10 is provided on the support piece 32 by a back adhesive, and the display module 10 is supported by the support piece 32.

[0071] Referring to Figure 3 , Figure 3 A structural schematic diagram of a display panel provided by an embodiment of the present application is shown in FIG. 1. As shown in FIG. 1, the display panel 12 includes a display area AA and a non-display area NAA, for example. Figure 3 In the display area AA, a plurality of data lines 121 extending along a second direction (i.e., a column direction) and arranged along a first direction (i.e., a row direction) and a plurality of scan lines 122 extending along the first direction and arranged along the second direction are provided, the data lines 121 and the scan lines 122 are cross arranged to define a plurality of sub-pixel areas, and a sub-pixel 123 is provided in each sub-pixel area. The plurality of sub-pixels 123 are arranged in an array, for example. The non-display area NAA is provided with a driving chip 124, and the driving chip 124 includes a plurality of data output pins 1241. The plurality of data output pins 1241 are coupled to the plurality of data lines 121 one by one. The SoC sends a control signal to the driving chip 124, and the internal circuit of the driving chip 124 processes the control signal to generate a data signal, which is transmitted to the data line 121 through the data output pin 1241, so as to write the data signal to the sub-pixel 123 through the data line 121.

[0072] Alternatively, referring to Figure 4 , Figure 4 A structural schematic diagram of another display panel provided by an embodiment of the present application is shown in FIG. 2. As shown in FIG. 2, the display panel 12 includes a display area AA and a non-display area NAA, for example. Figure 4As shown, the non-display area NAA is also provided with a plurality of multiplexing circuits 125, and each multiplexing circuit 125 includes a plurality of multiplexing units 1251. An input end of one multiplexing unit 1251 is coupled with one data output pin 1241, and an output end of the multiplexing unit 1251 can be coupled with at least two data lines 121. The SoC sends a control signal to the driving chip 124, and the internal circuit of the driving chip 124 generates a data driving signal after processing the control signal. The data driving signal is transmitted to the multiplexing unit 1251 through the data output pin 1241, so as to write a data signal to the sub-pixel 123 through the multiplexing unit 1251. The multiplexing circuit 125 can reduce the number of data output pins 1241.

[0073] It should be noted that the following examples are described by taking that the non-display area NAA is not provided with the multiplexing circuit 125 as an example.

[0074] It should also be noted that the driving chip 124 can be arranged on the display panel 12, or can not be arranged on the display panel 12, and the embodiments of the present application do not limit this.

[0075] Continuing to refer to Figure 3 or Figure 4 , the non-display area NAA is also provided with a shift register 126, and the shift register 126 includes a plurality of cascaded shift register units. A scan signal output end 1261 of each shift register unit is coupled with a scan line 122 corresponding to one row of sub-pixels 123. The internal circuit of the driving chip 124 generates a scan driving signal after processing the control signal. The scan driving signal is transmitted to the shift register 126 to generate a scan signal, and the scan signal is transmitted to the scan line 122 through the scan signal output end 1261 of the shift register unit. The number of the shift register 126 can be one, as shown in Figure 3 or Figure 4 , a group of cascaded shift registers 126 are arranged on one side of the display area AA. Optionally, referring to Figure 5 , Figure 5 is another structure schematic diagram of a display panel provided by the embodiments of the present application. As shown in Figure 5 , the number of the shift register 126 can also be two, and two groups of cascaded shift registers 126 are arranged on the opposite non-display areas NAA on both sides of the display area AA. The scan signal output ends 1261 of the two groups of shift registers 126 arranged on the non-display areas NAA are coupled through one scan line 122. The shift registers 126 coupled with the same scan line 122 synchronously output scan signals through the scan signal output ends 1261 to the scan line 122. In this way, the influence of the voltage drop on the scan line 122 on the display effect of the display panel can be avoided.

[0076] Referring to Figure 6, Figure 6 A film layer structure diagram of a display panel is provided for an embodiment of the present application. As shown in Figure 6 , the display panel 12 includes a substrate 127, a pixel circuit layer 128 located on the substrate 127, and a light emitting layer 129 located on a side of the pixel circuit layer 128 away from the substrate 127.

[0077] For example, the substrate 127 can be flexible or rigid, for example, formed by using any suitable insulating material with flexibility, for blocking oxygen and moisture, preventing moisture or impurities from diffusing through the substrate 127 to the inside of the display panel 12.

[0078] The pixel circuit layer 128 can include a plurality of pixel driving circuits 1281, each of which includes a plurality of (for example, seven) thin film transistors (TFT) 1282, for driving a light emitting element 1290 (described below) in the light emitting layer 129 to emit light. For example, as shown in Figure 6 , the present embodiment takes a top gate type thin film transistor as an example for structural description, and the pixel circuit layer 128 of the display panel 12 specifically includes an active layer 12811 located on the substrate 127; a gate insulating layer 128b located on a side of the active layer 12811 away from the substrate 127; a gate 12812 of the thin film transistor 1282 located on a side of the gate insulating layer 128b away from the substrate 127, for example, the above-mentioned scan line is provided in the same layer as the gate 12812; an interlayer insulating layer 128c located on a side of the gate 12812 away from the substrate 127, wherein the interlayer insulating layer 128c can be formed by an inorganic layer insulating such as silicon oxide or silicon nitride; a source electrode 12813 and a drain electrode 12814 of the thin film transistor 1282 located on a side of the interlayer insulating layer 128c away from the substrate 127, wherein the source electrode 1283 and the drain electrode 1284 are respectively electrically connected (or combined) to the source region and the drain region of the active layer 12811 through the contact hole, the contact hole is formed by selectively removing the gate insulating layer 128b and the interlayer insulating layer 128c, for example, the above-mentioned data line is provided in the same layer as the source electrode 12813 and the drain electrode 12814 of the thin film transistor 1282; a passivation layer 128d located on the source electrode 12813 and the drain electrode 12814 of the thin film transistor 1282. More structures and preparation materials of the pixel circuit layer 128 are not listed here.

[0079] The light-emitting layer 129 includes a pixel definition layer 1291, an anode 1292, a light-emitting functional layer 1293, and a transparent cathode layer 1294. The pixel definition layer 1291 can be formed of an organic material such as polyimide (PI), polyamide, benzocyclobutene (BCB), acrylic resin, or phenol resin, or an inorganic material such as SiNx. A plurality of first openings 1295 are formed in the pixel definition layer 1291. The light-emitting functional layer 1293 is at least partially filled in the first openings 1295, so that the anode 1292, the light-emitting functional layer 1293, and the transparent cathode layer 1294 defined by the first openings 1295 form a light-emitting element 1290 (i.e. Figure 6 The light-emitting layer 129 includes a pixel definition layer 1291, an anode 1292, a light-emitting functional layer 1293, and a transparent cathode layer 1294. The pixel definition layer 1291 can be formed of an organic material such as polyimide (PI), polyamide, benzocyclobutene (BCB), acrylic resin, or phenol resin, or an inorganic material such as SiNx. A plurality of first openings 1295 are formed in the pixel definition layer 1291. The light-emitting functional layer 1293 is at least partially filled in the first openings 1295, so that the anode 1292, the light-emitting functional layer 1293, and the transparent cathode layer 1294 defined by the first openings 1295 form a light-emitting element 1290 (i.e.

[0080] Continuing to refer to Figure 6 In some embodiments, the display panel 12 further includes an encapsulation layer 130 formed by overlapping an inorganic layer (e.g., a film layer formed of SiN material), an organic layer (e.g., a film layer formed of an organic polymer material), and an inorganic layer (e.g., a film layer formed of SiN material), and located on a side of the light-emitting layer 129 away from the substrate 127, for protecting the light-emitting functional layer 1293 from water and oxygen.

[0081] See also Figure 6 In some embodiments, the display panel 12 further includes a touch layer 131 located on the side of the encapsulation layer 130 opposite to the substrate 127, to realize the touch function of the display panel 12. It should be noted that the location of the touch layer 131 is not limited to this. The location of the touch layer 131 is similar to that of the prior art, and can be found in the prior art for details, which will not be repeated here.

[0082] As can be seen from the foregoing, the multiple sub-pixels 123 are arranged in an array, for example. However, the specific arrangement of the multiple sub-pixels 123 is not limited in the embodiments of this application.

[0083] In some embodiments, see Figure 7 , Figure 7 A pixel arrangement method provided in the embodiments of this application, such as Figure 7 As shown, multiple sub-pixels 123 constitute multiple groups of sub-pixel columns 1230 arranged along a first direction (i.e., the row direction of the array arrangement). Each group of sub-pixel columns 1230 includes at least three columns of sub-pixel columns 1231. The at least three columns of sub-pixel columns 1231 include a red sub-pixel column 1231r, a green sub-pixel column 1231g, and a blue sub-pixel column 1231b. The red sub-pixel column 1231r includes multiple red sub-pixels 123r arranged along a second direction, the green sub-pixel column 1231g includes multiple green sub-pixels 123g arranged along the second direction, and the blue sub-pixel column 1231b includes multiple blue sub-pixels 123b arranged along the second direction.

[0084] In some other embodiments, see Figure 8 , Figure 8 Another pixel arrangement method provided in the embodiments of this application, such as Figure 8As shown, the plurality of sub-pixels 123 constitute a plurality of sub-pixel column groups 1230 arranged along the first direction, each of the sub-pixel column groups 1230 includes two sub-pixel columns 1231, each of the two sub-pixel columns 1231 includes a first sub-pixel column 12311 and a second sub-pixel column 12312, each of the first sub-pixel column 12311 and the second sub-pixel column 12312 includes a plurality of sub-pixels 123 arranged along the second direction, and the sub-pixels 123 in the first sub-pixel column 12311 and the sub-pixels 123 in the second sub-pixel column 12312 are arranged staggeredly. The colors of two adjacent sub-pixels in the first sub-pixel column 12311 are different, for example, red sub-pixels 123r and blue sub-pixels 123b are arranged alternately along the second direction, and the colors of the sub-pixels 123 in the second sub-pixel column 12312 are all the same, for example, all are green sub-pixels 123g. In the first sub-pixel column 12311 of two adjacent sub-pixel column groups 1230, the colors of two sub-pixels in the same row are different, for example, one sub-pixel 123 is a red sub-pixel 123r and the other sub-pixel 123 is a blue sub-pixel 123b.

[0085] It should be noted that the following examples are described by taking the pixel arrangement shown in FIG. 1 as an example. Figure 8 It should be noted that the following examples are described by taking the pixel arrangement shown in FIG. 1 as an example.

[0086] It should be noted that the following examples are described by taking the pixel arrangement shown in FIG. 1 as an example. Figure 7 It should be noted that the following examples are described by taking the pixel arrangement shown in FIG. 1 as an example. Figure 8 In the following examples, only the shape of each sub-pixel 123 is taken as a circular shape as an example for illustrative description. The boundary of the circular shape represents the opening boundary of the corresponding sub-pixel 123. Taking the display panel as an OLED display panel as an example, the boundary of the circular shape is the boundary of the effective opening of the pixel definition layer (PDL layer), which represents the effective light-emitting area (opening area) of the light-emitting functional layer corresponding to the sub-pixel. The definition of the shape of the sub-pixel 123 in the following examples is similar to this, and the following examples will not be described in detail.

[0087] In order to improve the spatial brightness consistency of the display panel, the display panel provided by the embodiment of the present application not only includes the above structure, but also includes a brightness adjustment structure on the side of the pixel definition layer away from the substrate, wherein the brightness adjustment structure includes a shielding structure and a plurality of color resist. The shielding structure includes a plurality of second openings, and the plurality of color resist is respectively located in the plurality of second openings; the plurality of color resist at least includes a plurality of red color resist, a plurality of green color resist and a plurality of blue color resist, wherein the plurality of red color resist corresponds to the plurality of light emitting elements including the red light emitting functional layer, the plurality of green color resist corresponds to the plurality of light emitting elements including the green light emitting functional layer, and the plurality of blue color resist corresponds to the plurality of light emitting elements including the blue light emitting functional layer. The setting of the color resist can not only absorb ambient light to reduce reflectivity, but also make the light emitted by the light emitting element smoothly emit, and after the light passes through the color resist, the spectrum of the light emitted is narrower, the color gamut is wider, and the display effect of the display panel is improved. The shielding structure is located between the adjacent two color resist, so as to avoid shielding the light emitted by the light emitting element, and at the same time, the ambient light can be shielded to reduce the reflectivity. When the display panel is in the screen-off state, the effect of integral black can be realized. Compared with the setting of the polarizer to reduce the reflectivity, the display panel provided by the embodiment of the present application is more light and thin, and the cost is low. Further, by setting the size of the second opening of the shielding structure in the oblique direction (third direction) to be greater than the size in the horizontal direction (first direction) and the vertical direction (second direction), the shielding of the light emitted by the light emitting element in the oblique direction can be reduced, so that the light in the oblique direction is increased, and then the brightness in the oblique direction is improved. That is, by increasing the brightness in the oblique direction, the decrease of the brightness of the electroluminescent spectrum of the organic light emitting element with the increase of the viewing angle due to the microcavity effect of the organic light emitting element in the OLED display panel is balanced, so that the spatial brightness consistency of the display panel is improved, and the problem of uneven spatial brightness caused by different viewing angles corresponding to different spatial regions is solved. Especially, the problem of darkening of the right-angle edge region of the flexible display panel of the large-size folding terminal device and the curved edge region (i.e. R corner region) connecting the adjacent two right-angle edge regions.

[0088] The specific structure and forming process of the display panel including the brightness adjustment structure will be introduced below. It should be noted that the following examples do not constitute a limitation on the present application.

[0089] Referring to Figure 9 and Figure 10 , Figure 9 the film layer structure diagram of another display panel provided by the embodiment of the present application, Figure 10 the top view of a shielding structure provided by the embodiment of the present application. As Figure 9 and Figure 10As shown, the display panel 12 further includes a brightness adjustment structure 132, which includes a shielding structure 1321, such as a black matrix (BM) or the like, which can shield ambient light to reduce reflectivity. The shielding structure 1321 includes a plurality of second openings 13211, each corresponding to a light emitting element 1290, to expose the light emitting element 1290 and avoid shielding of light emitted by the light emitting element 1290, and regions of the shielding structure 1321 without the second openings 13211 can shield ambient light to reduce reflectivity. In some embodiments, projections of the plurality of first openings 1295 on the substrate 127 are respectively located within projections of the plurality of second openings 13211 on the substrate 127, i.e., the size of the second openings 13211 is greater than the size of the first openings 1295. For example, when the first openings 1295 and the second openings 13211 are both circular, the projections of the centers of the first openings 1295 on the substrate 127 and the projections of the centers of the second openings 13211 on the substrate 127 coincide, and the diameter of the second openings 13211 is greater than the diameter of the first openings 1295. In this way, more light can pass through the second openings 13211 and be emitted, which is beneficial to improving the display brightness of the display panel 12.

[0090] The brightness adjustment structure 132 further includes a plurality of color resistances 1322, also referred to as color filters (CF), each located within a second opening 13211. The plurality of color resistances 1322 at least includes a plurality of red color resistances 1322r, a plurality of green color resistances 1322g, and a plurality of blue color resistances 1322b, each corresponding to a red light emitting element 1290, a green light emitting element 1290, or a blue light emitting element 1290, respectively. The color resistances 1322 can not only absorb ambient light to reduce reflectivity, but also allow light emitted by the light emitting elements 1290 to be emitted smoothly, and the light spectrum after passing through the color resistances 1322 is narrower, the display color gamut is wider, and the display effect of the display panel 12 is improved.

[0091] It should be noted that the color resistances 1322 correspond to the light emitting elements 1290, i.e., the projections of the color resistances 1322 on the substrate 127 overlap the projections of the light emitting elements 1290 on the substrate 127, or the projections of the color resistances 1322 on the substrate 127 cover the projections of the light emitting elements 1290 on the substrate 127, or the projections of the color resistances 1322 on the substrate 127 are located within the projections of the light emitting elements 1290 on the substrate 127.

[0092] Referring to Figure 11 , Figure 11 forFigure 10 An enlarged view of a second opening in the shown shielding structure. (See attached image.) Figure 10 and Figure 11 As shown, at least some of the sub-pixels 123 correspond to the second opening 13211 in the third direction, the size L1 of the second opening 13211 in the third direction is greater than the size L2 of the second opening 13211 in the first direction, and is greater than the size L3 of the second opening 13211 in the second direction. The third direction and the first direction have a first angle, wherein the first angle is greater than 0° and less than 90°.

[0093] This design is because the microcavity effect of the organic light-emitting elements in the OLED display panel 12 causes the brightness of the electroluminescence spectrum of the organic light-emitting elements to decrease as the viewing angle increases. The viewing angle is the angle between the observer's line of sight and the normal to the display panel 12. The angle between the observer's line of sight and the normal at different locations on the display area AA of the display panel 12 varies, resulting in different viewing angles. Furthermore, the viewing angle gradually increases as the observer's line of sight moves from the normal at a given location towards the edges. Since the shape of the mobile phone 100 is generally rectangular or square, the four corners of the mobile phone 100 are also called R-angles (e.g.,...). Figure 10 The viewing angle is largest at the RR position in the image, so the brightness is the darkest, especially for the right-angled edge area and the curved edge area connecting two adjacent right-angled edges of the flexible display panel of large-size foldable terminal devices, where the brightness is even darker. Since the positions of the four corners have certain angles with the row and column directions, by setting the size L1 of the second opening 13211 corresponding to some or all sub-pixels 123 in the third direction to be greater than the size L2 of the second opening 13211 in the row direction and greater than the size L3 of the second opening 13211 in the column direction, the obstruction of the light emitted by the light-emitting element 1290 by the obstruction structure 1321 in the third direction can be reduced, thereby increasing the light in the third direction and thus improving the brightness in the third direction. That is, by increasing the brightness in the third direction, the brightness of the electroluminescence spectrum of the organic light-emitting element 1290 caused by the microcavity effect of the organic light-emitting element 1290 in the OLED display panel 12 is balanced as the viewing angle increases, thereby improving the spatial brightness uniformity of the display panel 12. This solves the problem of uneven spatial brightness caused by different viewing angles in different spatial areas, especially for the problem of dark right-angle edge areas and curved edge areas (i.e., R-corner areas) connecting two adjacent right-angle edges of the flexible display panel of large-size foldable terminal devices.

[0094] In addition, in order to further improve the uniformity of the brightness of the display panel, for example, improve the brightness of a certain straight edge region of the display panel, the size of the second opening 13211 corresponding to at least part of the sub-pixel 123 in the first direction can be different from the size of the second opening 13211 in the second direction. That is, by setting the size of the second opening 13211 in the first direction and the size of the second opening 13211 in the second direction, the brightness of a certain straight edge region (which is far away from other straight edge regions) is improved, and the uniformity of the spatial brightness of the display panel is further improved.

[0095] For the size of the second opening 13211 in the third direction, the embodiments of the present application do not limit the size of the second opening 13211 in the third direction, as long as the uniformity of the spatial brightness of the display panel can be improved.

[0096] In some possible implementations, the size of the second opening 13211 corresponding to at least part of the sub-pixel 123 in the third direction and the size of the second opening 13211 in the first direction satisfy: 1.1≤L1 / L2≤2.5; and / or, the size of the second opening corresponding to at least part of the sub-pixel in the third direction and the size of the second opening in the second direction satisfy: 1.1≤L1 / L3≤2.5; wherein L1 is the size of the second opening in the third direction corresponding to at least part of the sub-pixel, L2 is the size of the second opening in the first direction corresponding to at least part of the sub-pixel, and L3 is the size of the second opening in the second direction corresponding to at least part of the sub-pixel.

[0097] In this way, the size of the second opening 13211 in the third direction is not too large, so that the resolution of the material of the shielding structure 1231 between the two adjacent second openings 13211 is not enough, and the two adjacent second openings 13211 are connected together, and the size of the second opening 13211 in the third direction is not too small, so that the effect of increasing the brightness under a large viewing angle cannot be achieved.

[0098] For the convenience of the following description, in the following description, the second opening 13211 corresponding to the red light emitting element 1290 is marked as 13211r, the second opening 13211 corresponding to the green light emitting element 1290 is marked as 13211g, and the second opening 13211 corresponding to the blue light emitting element 1290 is marked as 13211b.

[0099] The size L1 of the second opening 13211 corresponding to at least part of the sub-pixel 123 in the third direction is greater than the size L2 of the second opening 13211 in the first direction, which can be that the size L1 of the second opening 13211 corresponding to the sub-pixel 123 of one color in the third direction is greater than the size L2 of the second opening 13211 in the first direction, for example, Figure 12 As shown, wherein,Figure 12 A structural diagram of another shielding structure provided by an embodiment of the present application is shown in FIG. 13C. The size L1 of the second opening 13211 corresponding to the green sub-pixel 123 in the third direction is greater than the size L2 of the second opening 13211 in the first direction, and the sizes of the second openings 13211 corresponding to the red and blue sub-pixels 123 remain unchanged. Alternatively, the size L1 of the second opening 13211 corresponding to the sub-pixel 123 of two colors in the third direction is greater than the size L2 of the second opening 13211 in the first direction, for example, as shown in FIG. 13C. Figure 13 As shown in FIG. 13C, the size L1 of the second opening 13211 corresponding to the green sub-pixel 123 in the third direction is greater than the size L2 of the second opening 13211 in the first direction, and the sizes of the second openings 13211 corresponding to the red and blue sub-pixels 123 remain unchanged. Alternatively, the size L1 of the second opening 13211 corresponding to the sub-pixel 123 of two colors in the third direction is greater than the size L2 of the second opening 13211 in the first direction, for example, as shown in FIG. 13C. Figure 13 A structural diagram of another shielding structure provided by an embodiment of the present application is shown in FIG. 13D. The size L1 of the second opening 13211 corresponding to the green sub-pixel 123 in the third direction is greater than the size L2 of the second opening 13211 in the first direction, the size L1 of the second opening 13211 corresponding to the red sub-pixel 123 in the third direction is greater than the size L2 of the second opening 13211 in the first direction, and the size of the second opening 13211 corresponding to the blue sub-pixel 123 remains unchanged. Alternatively, the size L1 of the second opening 13211 corresponding to the sub-pixel 123 of three colors in the third direction is greater than the size L2 of the second opening 13211 in the first direction, for example, as shown in FIG. 13D. Figure 14 As shown in FIG. 13D, the size L1 of the second opening 13211 corresponding to the green sub-pixel 123 in the third direction is greater than the size L2 of the second opening 13211 in the first direction, the size L1 of the second opening 13211 corresponding to the red sub-pixel 123 in the third direction is greater than the size L2 of the second opening 13211 in the first direction, and the size of the second opening 13211 corresponding to the blue sub-pixel 123 remains unchanged. Alternatively, the size L1 of the second opening 13211 corresponding to the sub-pixel 123 of three colors in the third direction is greater than the size L2 of the second opening 13211 in the first direction, for example, as shown in FIG. 13D. Figure 14 A structural diagram of another shielding structure provided by an embodiment of the present application is shown in FIG. 13E. The size L1 of the second opening 13211 corresponding to the green sub-pixel 123 in the third direction is greater than the size L2 of the second opening 13211 in the first direction, the size L1 of the second opening 13211 corresponding to the red sub-pixel 123 in the third direction is greater than the size L2 of the second opening 13211 in the first direction, and the size L1 of the second opening 13211 corresponding to the blue sub-pixel 123 in the third direction is greater than the size L2 of the second opening 13211 in the first direction.

[0100] It should be noted that, Figure 12 , Figure 13 and Figure 14This is merely an example and does not constitute a limitation of this application. Those skilled in the art can set the second opening 13211g corresponding to the sub-pixels 123 of the corresponding colors according to actual circumstances. For example, only the size L1 of the second opening 13211r corresponding to the red sub-pixel 123 in the third direction may be greater than the size L2 of the second opening 13211r in the first direction, while the sizes of the second opening 13211g corresponding to the green sub-pixel 123 and the second opening 13211b corresponding to the blue sub-pixel 123 remain unchanged (not shown in the figure); or, the size L1 of the second opening 13211g corresponding to the green sub-pixel 123 in the third direction may be greater than the size L2 of the second opening 13211g in the first direction, and... The size L1 of the second opening 13211b corresponding to the blue sub-pixel 123 in the third direction is greater than the size L2 of the second opening 13211g in the first direction, while the size of the second opening 13211r corresponding to the red sub-pixel 123 remains unchanged (not shown in the figure); or, the size L1 of the second opening 13211r corresponding to the red sub-pixel 123 in the third direction is greater than the size L2 of the second opening 13211r in the first direction, and the size L1 of the second opening 13211b corresponding to the blue sub-pixel 123 in the third direction is greater than the size L2 of the second opening 13211g in the first direction, while the size of the second opening 13211g corresponding to the green sub-pixel 123 remains unchanged (not shown in the figure), etc.

[0101] It should also be noted that this application does not limit the overall size (dimensions in all directions) of the second opening 13211 corresponding to various color light-emitting elements. Those skilled in the art can set it according to actual conditions. For example, the luminous brightness of the blue light-emitting element is low, therefore the overall size of the second opening 13211b corresponding to the blue light-emitting element 1290 is set to be large. Figure 14 As shown.

[0102] Depend on Figure 12 , Figure 13 and Figure 14 As can be seen, the above examples all illustrate the case where the size L1 of the second opening 13211 corresponding to at least one color sub-pixel 123 within the entire display area AA in the third direction is greater than the size L2 of the second opening 13211 in the first direction, but this is not sufficient to limit the scope of this application. In other optional embodiments of this application, it may also be that only in areas with relatively low brightness, the size L1 of the second opening 13211 corresponding to at least one color sub-pixel 123 in the third direction is greater than the size L2 of the second opening 13211 in the first direction, while the second opening 13211 in other areas is not modified accordingly.

[0103] For example, see Figure 15 , Figure 15This application provides a diagram showing the positional relationship between a substrate and a second opening, wherein the display area AA and the non-display area NAA of the display panel 12 can be formed by dividing the substrate 127, i.e., dividing the substrate 127 into the display area AA and the non-display area NAA. Figure 15 As shown, the display area AA of the substrate 127 is divided into a central display area AA1 and an edge display area AA2 surrounding the central display area AA1. The edge display area AA2 includes an edge display sub-area AA21, which is the area in the edge display area AA2 that is furthest from the central display area AA1. The size of the second opening 13211 corresponding to the sub-pixel in the edge display sub-area AA21 in the third direction is greater than the size of the second opening 13211 in the first direction, and is also greater than the size of the second opening 13211 in the second direction.

[0104] That is, only the second opening 13211 corresponding to the sub-pixel in the darker areas, such as the R-corner area, is improved. In other words, the size of the second opening 13211 in the R-corner area is increased in the third direction, while other areas are not improved. In this way, the brightness in the R-corner area is improved when the viewing angle is different.

[0105] It should be noted that the sizes of the central display area AA1 and the edge display sub-area AA21 can be determined by those skilled in the art based on actual circumstances, and this application embodiment does not impose any limitations. For example, see below. Figure 15 , Figure 15 The description takes as an example where the display panel 12 includes 25 second openings 13211 corresponding to 25 sub-pixels, and the central display area AA1 has 7 second openings 13211 corresponding to 7 sub-pixels. See [link to documentation]. Figure 16 , Figure 16 Another positional relationship diagram between the substrate and the second opening provided in the embodiments of this application, such as... Figure 16 As shown, the display panel 12 still includes twenty-five second openings 13211 corresponding to twenty-five sub-pixels. Figure 16 The central display area AA1 has only one subpixel corresponding to one second opening 13211. The edge display sub-area AA21 is the same, and will not be described further. It is understandable that the number of subpixels and the number of subpixels corresponding to second openings 13211 in the display panel 12 are much greater than this.

[0106] In this case, see Figure 17 Figure 17 shows another positional relationship between the substrate and the second opening provided in an embodiment of this application. Figure 17As shown, the size of the second opening 13211 in the third direction gradually increases from the central display area AA1 to the edge display sub-area AA21, that is, the size of the second opening 13211 in the third direction is gradually changed. In this way, the brightness gradually increases from the central display area AA1 to the edge display sub-area AA21, avoiding the problem of brightness mutation, and further making the brightness uniformity of the display panel better.

[0107] For the shape of the second opening 13211 whose size in the third direction is greater than the size in the first direction and greater than the size in the second direction, embodiments of the present application do not limit the shape of the second opening 13211, and those skilled in the art can set it according to actual conditions, as long as the size L1 of the second opening 13211 in the third direction is greater than the size L2 of the second opening 13211 in the first direction, and greater than the size L3 of the second opening 13211 in the second direction.

[0108] For example, the shape of the projection of the second opening 13211 corresponding to at least part of the sub-pixel on the substrate 127 includes, for example, a quasi-octagon, an octagon, an ellipse, a quasi-ellipse.

[0109] The so-called quasi-octagon is a shape formed by concave in the horizontal (first direction) and vertical (second direction) and convex in the oblique direction (third direction) of the circle, as shown in Figure 12- Figure 17 The so-called quasi-ellipse is a shape formed by convex in the third direction of the circle, which is similar to an ellipse, as shown in Figure 18 .

[0110] When the shape of the projection of the second opening 13211 on the substrate 127 is a quasi-octagon or an octagon, the direction of the connection between the two edges farthest apart in the second opening 13211 is the third direction. When the shape of the projection of the second opening 13211 on the substrate 127 is a quasi-ellipse or an ellipse, the direction of the long axis of the ellipse is the third direction.

[0111] It should be noted that the following examples are described with the shape of the projection of the second opening 13211 corresponding to at least part of the sub-pixel on the substrate 127 as a quasi-ellipse.

[0112] When the viewing angle is different, in order to further improve the uniformity of the spatial brightness of the display panel, continuing to refer to Figure 18 , the second opening 13211 corresponding to at least one of the sub-pixels 123 of the same color located in different columns and adjacent to each other is symmetrically arranged about the second direction; and / or, the second opening 13211 corresponding to at least one of the sub-pixels 123 of the same color located in different rows and adjacent to each other is symmetrically arranged about the first direction.

[0113] For example, continuing to refer to Figure 18When the size L1 of the second opening 13211 corresponding to the green sub-pixel 123 in the third direction is greater than the size L2 of the second opening 13211 in the first direction, the second openings 13211 corresponding to the green sub-pixels located in different columns and adjacent to each other are symmetrically arranged about the second direction, and the second openings 13211 corresponding to the green sub-pixels located in different rows and adjacent to each other are symmetrically arranged about the second direction, that is, the second openings 13211 corresponding to the green sub-pixels located in the second column and the fourth column are symmetrically arranged about the second direction, the second openings 13211 corresponding to the green sub-pixels located in the fourth column and the sixth column are symmetrically arranged about the second direction, and the second openings 13211 corresponding to the green sub-pixels located in the second row and the fourth row are symmetrically arranged about the first direction, the second openings 13211 corresponding to the green sub-pixels located in the fourth row and the sixth row are symmetrically arranged about the first direction. Figure 18 It can be seen that the sub-pixels in the second column, the fourth column and the sixth column are the second openings 13211g corresponding to the green sub-pixels, and the sub-pixels in the second row, the fourth row and the sixth row are the second openings 13211g corresponding to the green sub-pixels. The second openings 13211g corresponding to the green sub-pixels in the second column and the fourth column are symmetrically arranged about the second direction, the second openings 13211g corresponding to the green sub-pixels in the fourth column and the sixth column are symmetrically arranged about the second direction, and the second openings 13211g corresponding to the green sub-pixels in the second row and the fourth row are symmetrically arranged about the first direction, the second openings 13211g corresponding to the green sub-pixels in the fourth row and the sixth row are symmetrically arranged about the first direction.

[0114] For example, referring to FIG. 2, Figure 19 , Figure 19 FIG. 3 is a structural schematic diagram of another shielding structure provided by an embodiment of the present application. As shown in FIG. 3, Figure 19 When the size L1 of the second opening 13211 corresponding to the green sub-pixel 123 in the third direction is greater than the size L2 of the second opening 13211 in the first direction, and the size L1 of the second opening 13211 corresponding to the red sub-pixel 123 in the third direction is greater than the size L2 of the second opening 13211 in the first direction, the second openings 13211 corresponding to the green sub-pixels located in different columns and adjacent to each other are symmetrically arranged about the second direction, the second openings 13211 corresponding to the red sub-pixels located in different columns and adjacent to each other are symmetrically arranged about the second direction, and the second openings 13211 corresponding to the green sub-pixels located in different rows and adjacent to each other are symmetrically arranged about the first direction, the second openings 13211 corresponding to the red sub-pixels located in different rows and adjacent to each other are symmetrically arranged about the first direction, that is, the second openings 13211 corresponding to the green sub-pixels located in the second column and the fourth column are symmetrically arranged about the second direction, the second openings 13211 corresponding to the red sub-pixels located in the second column and the fourth column are symmetrically arranged about the second direction, the second openings 13211 corresponding to the green sub-pixels located in the fourth column and the sixth column are symmetrically arranged about the second direction, the second openings 13211 corresponding to the red sub-pixels located in the fourth column and the sixth column are symmetrically arranged about the second direction, and the second openings 13211 corresponding to the green sub-pixels located in the second row and the fourth row are symmetrically arranged about the first direction, the second openings 13211 corresponding to the red sub-pixels located in the second row and the fourth row are symmetrically arranged about the first direction, the second openings 13211 corresponding to the green sub-pixels located in the fourth row and the sixth row are symmetrically arranged about the first direction, and the second openings 13211 corresponding to the red sub-pixels located in the fourth row and the sixth row are symmetrically arranged about the first direction. Figure 19 It can be seen that the sub-pixels in the second column, the fourth column and the sixth column are the second openings 13211g corresponding to the green sub-pixels, and the sub-pixels in the second row, the fourth row and the sixth row are the second openings 13211g corresponding to the green sub-pixels. The second openings 13211g corresponding to the green sub-pixels in the second column and the fourth column are symmetrically arranged about the second direction, the second openings 13211g corresponding to the green sub-pixels in the fourth column and the sixth column are symmetrically arranged about the second direction, and the second openings 13211g corresponding to the green sub-pixels in the second row and the fourth row are symmetrically arranged about the first direction, the second openings 13211g corresponding to the green sub-pixels in the fourth row and the sixth row are symmetrically arranged about the first direction.

[0115] The sub-pixels of the first column and first row, the fifth column and first row, the third column and third row, the seventh column and third row, the first column and fifth row, the fifth column and fifth row, the third column and seventh row, and the seventh column and seventh row are the second opening 13211r corresponding to the red sub-pixels. The second opening 13211r corresponding to the red sub-pixels of the first column and first row and the fifth column and first row are symmetrically set about the second direction. The second opening 13211r corresponding to the red sub-pixels of the third column and third row and the seventh column and third row are symmetrically set about the second direction. The second opening 13211r corresponding to the red sub-pixels of the first column and fifth row and the fifth column and fifth row are symmetrically set about the second direction. The second opening 13211r corresponding to the red sub-pixels of the third column and seventh row are symmetrically set about the second direction. Furthermore, the second opening 13211r corresponding to the red sub-pixels of the first column and first row and the first column and fifth row is symmetrically set about the first direction; the second opening 13211r corresponding to the red sub-pixels of the third column and third row and the third column and seventh row is symmetrically set about the first direction; the second opening 13211r corresponding to the red sub-pixels of the fifth column and first row and the fifth column and fifth row is symmetrically set about the first direction; and the second opening 13211r corresponding to the red sub-pixels of the seventh column and third row and the seventh column and seventh row is symmetrically set about the first direction.

[0116] For example, see Figure 20 , Figure 20 This is a schematic diagram of another shielding structure provided in an embodiment of this application. Figure 20 As shown, when the size L1 of the second opening 13211 corresponding to the three colors of sub-pixels 123 in the third direction is greater than the size L2 of the second opening 13211 in the first direction, the second opening 13211g corresponding to the green sub-pixels located in different columns and adjacent is symmetrically set about the second direction, the second opening 13211b corresponding to the red sub-pixels located in different columns and adjacent is symmetrically set about the second direction, and the second opening 13211r corresponding to the blue sub-pixels located in different columns and adjacent is symmetrically set about the second direction; and the second opening 13211g corresponding to the green sub-pixels located in different rows and adjacent is symmetrically set about the first direction, the second opening 13211r corresponding to the red sub-pixels located in different rows and adjacent is symmetrically set about the first direction, and the second opening 13211b corresponding to the blue sub-pixels located in different rows and adjacent is symmetrically set about the first direction: by Figure 20It can be known that the sub-pixels in the second column, the fourth column and the sixth column are the second openings 13211g corresponding to green sub-pixels, and the sub-pixels in the second row, the fourth row and the sixth row are the second openings 13211g corresponding to green sub-pixels. The second openings 13211g corresponding to the green sub-pixels in the second column and the fourth column are symmetrically arranged about the second direction, the second openings 13211g corresponding to the green sub-pixels in the fourth column and the sixth column are symmetrically arranged about the second direction, and the second openings 13211g corresponding to the green sub-pixels in the second row and the fourth row are symmetrically arranged about the first direction, and the second openings 13211g corresponding to the green sub-pixels in the fourth row and the sixth row are symmetrically arranged about the first direction.

[0117] The sub-pixels in the first column and the first row, the fifth column and the first row, the third column and the third row, the seventh column and the third row, the first column and the fifth row, the fifth column and the fifth row, the third column and the seventh row and the seventh column and the seventh row are the second openings 13211r corresponding to red sub-pixels, the second openings 13211r corresponding to the red sub-pixels in the first column and the first row and the fifth column and the first row are symmetrically arranged about the second direction, the second openings 13211r corresponding to the red sub-pixels in the third column and the third row and the seventh column and the third row are symmetrically arranged about the second direction, the second openings 13211r corresponding to the red sub-pixels in the first column and the fifth row and the fifth column and the fifth row are symmetrically arranged about the second direction, the second openings 13211r corresponding to the red sub-pixels in the third column and the seventh row and the seventh column and the seventh row are symmetrically arranged about the second direction. And the second openings 13211r corresponding to the red sub-pixels in the first column and the first row and the first column and the fifth row are symmetrically arranged about the first direction, the second openings 13211r corresponding to the red sub-pixels in the third column and the third row and the third column and the seventh row are symmetrically arranged about the first direction, the second openings 13211r corresponding to the red sub-pixels in the fifth column and the first row and the fifth column and the fifth row are symmetrically arranged about the first direction, the second openings 13211r corresponding to the red sub-pixels in the seventh column and the third row and the seventh column and the seventh row are symmetrically arranged about the first direction.

[0118] The sub-pixels in the third column and the first row, the seventh column and the first row, the first column and the third row, the fifth column and the third row, the third column and the fifth row, the seventh column and the fifth row, the first column and the seventh row, and the fifth column and the seventh row are the second openings 13211b corresponding to blue sub-pixels, the second openings 13211b corresponding to the blue sub-pixels in the third column and the first row and the seventh column and the first row are symmetrically arranged about the second direction, the second openings 13211b corresponding to the blue sub-pixels in the first column and the third row and the fifth column and the third row are symmetrically arranged about the second direction, the second openings 13211b corresponding to the blue sub-pixels in the third column and the fifth row and the seventh column and the fifth row are symmetrically arranged about the second direction, the second openings 13211b corresponding to the blue sub-pixels in the first column and the seventh row and the fifth column and the seventh row are symmetrically arranged about the second direction, and the second openings 13211b corresponding to the blue sub-pixels in the first column and the third row and the first column and the seventh row are symmetrically arranged about the first direction, the second openings 13211b corresponding to the blue sub-pixels in the third column and the fifth row and the third column and the first row are symmetrically arranged about the first direction, the second openings 13211b corresponding to the blue sub-pixels in the fifth column and the third row and the fifth column and the seventh row are symmetrically arranged about the first direction, and the second openings 13211b corresponding to the blue sub-pixels in the seventh column and the first row and the seventh column and the fifth row are symmetrically arranged about the first direction.

[0119] In this way, the problem of dark R-corner regions can be improved, because a mobile phone is generally rectangular or square, and when the mobile phone is rectangular or square, there are generally four R-corner regions, and two of the R-corner regions are symmetrically arranged about the first direction, and the other two R-corner regions are symmetrically arranged about the second direction.

[0120] It can be understood that the symmetric arrangement is a symmetric arrangement within a certain error range. That is, the two second openings 13211b symmetrically arranged about the first direction may not be completely symmetrical due to differences in shape, size, and the like in actual arrangement, and the two second openings 13211b symmetrically arranged about the second direction may not be completely symmetrical due to differences in shape, size, and the like in actual arrangement.

[0121] It should be noted that the specific position of the third direction is not limited in the embodiments of the present application, as long as the problem of uneven spatial brightness of the display panel 12 can be improved.

[0122] In some possible implementation manners, the direction of the line connecting the two end points farthest apart in the display panel is the third direction.

[0123] The viewing angle of the two end points farthest apart in the display panel 12 is the largest, so the brightness here is the darkest. The embodiments of the present application increase the size of the second opening 13211 in this direction, reduce the shielding of the light emitted by the light emitting element 1290 in this direction by the shielding structure 1321, increase the light in this direction, and further improve the brightness in this direction.

[0124] In some possible implementations, the first included angle between the third direction and the first direction is greater than or equal to 35° and less than or equal to 55°. In this way, the display panel 12 has a wider range of applications.

[0125] In summary, the display panel provided by the embodiments of the present application improves the brightness at the corners of the display panel through the special design of the second opening of the shielding structure, further improves the spatial brightness consistency of the display panel, and has better display effect, which is beneficial to user experience.

[0126] To explain in detail that the display panel provided by the present application can improve the spatial brightness consistency of the display panel, the following compares the display panel provided by the present application with the display panel without corresponding improvement of the second opening (i.e., the size of the second opening in the third direction does not satisfy the requirement that it is greater than the size of the second opening in the first direction, and greater than the size of the second opening in the second direction), which is simulated by taking the shielding structure shown in Figure 12 as an example.

[0127] Figure 21 The spatial brightness distribution comparison chart of the related art and the simulation of the embodiments of the present application is shown, wherein, Figure 21 (1) and Figure 21 (2) The horizontal and vertical coordinates in the left graph determine the positions of the points on the display panel. Each point position corresponds to a color, and each color represents a brightness value. The corresponding relationship between the color and the brightness value can be determined in the right graph of Figure 21 (1) and Figure 21 (2), that is, the color of each point in the left graph of Figure 21 (1) and Figure 21 (2) is determined by the corresponding relationship between the color and the brightness value in the graph. Figure 21 (1) and Figure 21 (2) The brightness value of each point in the left graph of Figure 21 (1) and Figure 21 (2) is determined, wherein the lighter the color, the greater the brightness value.

[0128] As shown in Figure 21 , it is found from the optical simulation result that the display panel (the display panel provided with the brightness adjusting structure) provided by the embodiments of the present application significantly improves the dark problem of the edge and the R corner area. For example, the ratio of the brightness at a distance of 1 cm from the R corner to the center brightness is improved from 92% of the scheme without corresponding improvement of the second opening to 96%.

[0129] Therefore, it can be known through simulation that the display panel provided in the embodiments of the present application has a larger size of at least part of the second openings 13211 in the third direction, reduces the shielding of light with a large viewing angle, and greatly improves the spatial brightness consistency of the display panel.

[0130] The embodiments of the present application also provide a display panel manufacturing method for manufacturing the display panel described above, which has the same beneficial effects. Details not described in the embodiments can be referred to the above embodiments of the display panel. The display panel manufacturing method will be described below in combination with the display panel shown in Figure 21 and Figure 9 .

[0131] As shown in Figure 10 , the display panel manufacturing method can be implemented through the following steps:

[0132] S101, forming a pixel circuit layer and an anode on a substrate.

[0133] Referring to Figure 22 , each film layer of the pixel circuit layer 128 is formed on the substrate 127 in sequence. The structure of each film layer can be referred to the above description, and the forming process of each film layer is similar to the prior art. For details, please refer to the prior art, which will not be described here. Then, a plurality of anodes 1292 is formed on the side of the pixel circuit layer 128 away from the substrate, and the plurality of anodes 1292 is respectively and one-to-one electrically connected with the pixel driving circuit 1281 in the plurality of pixel circuit layers 128.

[0134] S102, forming a pixel definition layer on the side of the anode away from the substrate, and opening a plurality of first openings on the pixel definition layer.

[0135] Referring to Figure 23a , the pixel definition layer 1291 is formed on the side of the anode 1292 away from the substrate 127, and a plurality of first openings 1295 is opened on the pixel definition layer 1291, the plurality of first openings 1295 is respectively corresponding to the plurality of anodes 1292 to expose the plurality of anodes 1292.

[0136] S103, forming a light-emitting functional layer on the side of the anode away from the substrate.

[0137] Referring to Figure 23bThe light-emitting functional layer 1293 is prepared on the side of the anode 1292 away from the substrate 127 by a vacuum thermal evaporation process, and includes a light-emitting layer and a common layer (not shown in the figure). The specific film layer structure of the light-emitting functional layer can be referred to the prior art, which will not be described here. The common layer and the light-emitting layer are prepared by using a common metal mask (CMM) and a fine metal mask (FMM), respectively.

[0138] S104. Forming a cathode layer, an encapsulation layer and a touch layer on the side of the light-emitting functional layer away from the substrate in sequence.

[0139] Referring to Figure 23c After the evaporation process, the cathode layer 1294 is formed on the side of the light-emitting functional layer 1293 away from the substrate 127. The anode 1290, the light-emitting functional layer 1293 and the cathode layer 1294 together form a light-emitting element 1290. Then, the inorganic layer (such as SiN), the organic layer and the inorganic layer (such as SiN) of the laminated encapsulation layer 130 are prepared on the side of the cathode layer 1294 away from the substrate 127 by a chemical vapor deposition (CVD) and an inkjet printing (IJP) process.

[0140] Then, the touch layer (TOE) 131 is prepared on the side of the encapsulation layer 130 away from the substrate 127 by a CVD and a Photo process (mainly including photoresist coating, exposure and development).

[0141] S105. Forming a black matrix on the side of the touch layer away from the substrate, and exposing and developing the black matrix to form a second opening.

[0142] Referring to Figure 23d After the black matrix (BM) 1321 with a thickness of 0.5-2.5 um is coated on the side of the touch layer 131 away from the substrate 127 by a Photo process (including photoresist coating, exposure and development), the second opening 13211 is exposed and developed directly above the light-emitting element 1290 to avoid blocking the light emitted by the light-emitting element 1290.

[0143] The size L1 of the second opening 13211 corresponding to at least part of the sub-pixel 123 in the third direction is greater than the size L2 of the second opening 13211 in the first direction, and greater than the size L3 of the second opening 13211 in the second direction. The third direction and the first direction have a first included angle, wherein the first included angle is greater than 0° and less than 90°. Wherein, Figure 23eThe size L1 of the second opening 13211 corresponding to the green sub-pixel 123 in the third direction is greater than the size L2 of the second opening 13211 in the first direction, and greater than the size L3 of the second opening 13211 in the second direction. The third direction has a first included angle with the first direction, where the first included angle is greater than 0° and less than 90°.

[0144] S106, forming color resist in the second opening.

[0145] Referring to Figure 10 A plurality of color resists 1324 of 1-4 um are formed in the second opening 13211 by a Photo process. The plurality of color resists 1324 include at least a plurality of red color resists 1324r, a plurality of green color resists 1324g, and a plurality of blue color resists 1324b. The plurality of red color resists 1324r respectively correspond to the plurality of red light emitting elements 1290, the plurality of green color resists 1324g respectively correspond to the plurality of green light emitting elements 1290, and the plurality of blue color resists 1324b respectively correspond to the plurality of blue light emitting elements 1290.

[0146] S107, forming a planarization layer on the side of the color resist away from the substrate.

[0147] Referring to Figure 23f Figure 23g A planarization layer 133 is coated on the side of the color resist 1324 away from the substrate 127 by a coating process. The material of the planarization layer 133 is, for example, an organic material.

[0148] The above-described embodiments are only used to illustrate the technical solutions of the present application, but not limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A display panel, characterized by, The display panel comprises: a substrate; a display area of the substrate is divided into a central display area and an edge display area surrounding the central display area, the edge display area comprises an edge display sub-area, the edge display sub-area is the area farthest from the central display area in the edge display area; a pixel definition layer on the substrate; the pixel definition layer comprises a plurality of first openings arranged in an array, one first opening corresponds to one sub-pixel; a plurality of light emitting elements, a plurality of the light emitting elements are respectively located in a plurality of the first openings; a plurality of the light emitting elements at least comprises a plurality of red light emitting elements, a plurality of green light emitting elements and a plurality of blue light emitting elements; a brightness adjusting structure on a side of the pixel definition layer away from the substrate; the brightness adjusting structure comprises a shielding structure and a plurality of color resistances; the shielding structure comprises a plurality of second openings, the projections of a plurality of the second openings on the substrate respectively overlap the projections of a plurality of the first openings on the substrate; a plurality of color resistances are respectively located in a plurality of the second openings; a plurality of color resistances at least comprises a plurality of red color resistances, a plurality of green color resistances and a plurality of blue color resistances, a plurality of the red color resistances respectively correspond to a plurality of the red light emitting elements, a plurality of the green color resistances respectively correspond to a plurality of the green light emitting elements, and a plurality of the blue color resistances respectively correspond to a plurality of the blue light emitting elements; wherein, the second opening comprises a first type opening and a second type opening, the shape of the first type opening and the second type opening is different, the size of the first type opening in the third direction of the display panel is greater than the size in the first direction and the size in the second direction, the shape of the projection of the first type opening on the substrate comprises an ellipse or a similar ellipse, the direction of the long axis of the ellipse is the third direction, and the similar ellipse is a shape similar to an ellipse formed by the outward convexity of a circle in the third direction; the size of the second type opening in the third direction of the display panel is equal to the size in the first direction and the size in the second direction; the first direction is the row direction of the array arrangement, the second direction is the column direction of the array arrangement, and the first included angle between the first direction and the third direction is greater than or equal to 35° and less than or equal to 55°; the display panel comprises four R corners, there are a plurality of the first type openings in the third direction of the display panel, and the second openings in the R corner area are the first type openings, and the second openings in the central display area are the second type openings; from the central display area to the edge display sub-area, the size of the second opening in the third direction gradually increases; the sub-pixel corresponding to the first opening where the red light emitting element is located is a red sub-pixel, the sub-pixel corresponding to the first opening where the green light emitting element is located is a green sub-pixel, and the sub-pixel corresponding to the first opening where the blue light emitting element is located is a blue sub-pixel; the second openings corresponding to at least one color of sub-pixels in different columns and adjacent sub-pixels of the same color are symmetrically arranged about the second direction; and / or, The second openings corresponding to at least one color of sub-pixels located in different rows and adjacent to each other are symmetrically arranged about the first direction.

2. The display panel of claim 1, wherein, The second openings corresponding to green sub-pixels located in different columns and adjacent to each other are symmetrically arranged about the second direction; and the second openings corresponding to green sub-pixels located in different rows and adjacent to each other are symmetrically arranged about the first direction.

3. The display panel of claim 2, wherein, The second openings corresponding to red sub-pixels located in different columns and adjacent to each other are symmetrically arranged about the second direction; and the second openings corresponding to red sub-pixels located in different rows and adjacent to each other are symmetrically arranged about the first direction.

4. The display panel of claim 3, wherein, The second openings corresponding to blue sub-pixels located in different columns and adjacent to each other are symmetrically arranged about the second direction; and the second openings corresponding to blue sub-pixels located in different rows and adjacent to each other are symmetrically arranged about the first direction.

5. The display panel of claim 1, wherein, The size of the second openings corresponding to at least part of the sub-pixels in the first direction is different from the size of the second openings in the second direction.

6. The display panel of any of claims 1-5, wherein, The size of the second openings corresponding to at least part of the sub-pixels in the third direction and the size of the second openings in the first direction satisfy: 1.1≤L1 / L2≤2.5; and / or, The size of the second openings corresponding to at least part of the sub-pixels in the third direction and the size of the second openings in the second direction satisfy: 1.1≤L1 / L3≤2.5; Wherein, L1 is the size of the second openings corresponding to at least part of the sub-pixels in the third direction, L2 is the size of the second openings corresponding to at least part of the sub-pixels in the first direction, and L3 is the size of the second openings corresponding to at least part of the sub-pixels in the second direction.

7. The display panel of claim 1, wherein, The projections of the first openings on the substrate are respectively located in the projections of the second openings on the substrate.

8. A display device, characterized by comprising: The display panel of any one of claims 1-7.

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