Display panel and display device

Abstract

Embodiments of the present application provide a display panel and a display device, and relate to the technical field of display, and are used to solve the technical problem of color deviation of the edge region and the middle region of the display panel. The display panel of the embodiments of the present application comprises an array substrate, a device layer and a touch function layer which are sequentially stacked, the device layer has a plurality of sub-pixels which are arranged at intervals, the sub-pixel with the smallest luminance decay rate in the plurality of sub-pixels is a first sub-pixel; the touch function layer comprises a touch electrode layer, the touch electrode layer is provided with a plurality of first metal wire rings which are electrically connected to each other, each first metal wire ring encloses a first opening, and the orthographic projection of each first sub-pixel on the array substrate is located in the orthographic projection of the first opening on the array substrate; the area of the first opening located in the edge region is smaller than the area of the first opening located in the middle region. The display panel can reduce or eliminate the color deviation of the middle region and the edge region of the display panel.

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] At present, organic electroluminescence diode (OLED) display panels are widely used in display devices such as mobile phones and televisions. However, as the viewing angle increases, color deviation will gradually occur in the edge region and the middle region of the display panel, affecting the display effect of the display panel. SUMMARY

[0003] In view of the above problems, the embodiments of the present application provide a display panel and a display device to solve the technical problem that color deviation will occur in the edge region and the middle region of the display panel.

[0004] In order to achieve the above purpose, the embodiments of the present application provide the following technical solutions:

[0005] The first aspect of the embodiments of the present application provides a display panel, the display panel has a middle region and an edge region connected to the middle region; the display panel comprises an array substrate, a device layer and a touch function layer which are sequentially stacked, the device layer has a plurality of sub-pixels arranged at intervals; the sub-pixel with the smallest luminance decay rate in the plurality of sub-pixels is a first sub-pixel; the touch function layer comprises a touch electrode layer, the touch electrode layer is provided with a plurality of first metal wire rings which are electrically connected to each other, a plurality of the first metal wire rings are arranged one by one corresponding to a plurality of the first sub-pixels, each first metal wire ring encloses a first opening, and the orthographic projection of each first sub-pixel on the array substrate is located within the orthographic projection of the first opening on the array substrate; the area of the first opening located in the edge region is smaller than the area of the first opening located in the middle region.

[0006] The display panel of the embodiment of the present application sets the touch electrode layer in the touch function layer as a plurality of first metal wire rings which are electrically connected to each other, and the plurality of first metal wire rings correspond to a plurality of first sub-pixels in the device layer in one-to-one correspondence. The orthographic projection of each first sub-pixel on the array substrate is located in a first opening surrounded by the first metal wire ring, and the light emitted by each first sub-pixel is emitted through the corresponding first opening. The embodiment of the present application also sets the area of the first opening located in the edge region to be smaller than the area of the first opening located in the middle region, so as to increase the shielding area of the first metal wire ring in the edge region to the light emitted by the first sub-pixel, increase the brightness decay rate of the light emitted by the first sub-pixel in the edge region, so that the brightness proportion of light of different colors in the middle region is the same as the brightness proportion of light of different colors in the edge region, and the color deviation of the middle region and the edge region of the display panel is reduced or eliminated.

[0007] In a possible implementation, the line width of the first metal wire ring located in the edge region is greater than the line width of the first metal wire ring in the middle region.

[0008] In a possible implementation, along the direction of the middle region pointing to the edge region, the line width of the first metal wire ring in the edge region gradually increases.

[0009] In a possible implementation, the center of the orthographic projection of the first sub-pixel on the array substrate coincides with the center of the orthographic projection of the first opening on the array substrate; along the direction parallel to the array substrate, the distance between the circumferential edge of the first sub-pixel and the circumferential edge of the first opening is equal everywhere.

[0010] In a possible implementation, the device layer further has a plurality of second sub-pixels and a plurality of third sub-pixels which are arranged at intervals, and the brightness decay rate of the second sub-pixel and the third sub-pixel is greater than the brightness decay rate of the first sub-pixel; the touch electrode layer further has a plurality of second metal wire rings and a plurality of third metal wire rings which are electrically connected to each other, a plurality of the second metal wire rings correspond to a plurality of the second sub-pixels in one-to-one correspondence, each of the second metal wire rings surrounds a second opening, and the orthographic projection of each of the second sub-pixels on the array substrate is located in the orthographic projection of the second opening on the array substrate; the area of the second opening located in the edge region is greater than the area of the second opening located in the middle region;

[0011] a plurality of the third metal wire rings correspond to a plurality of the third sub-pixels in one-to-one correspondence, each of the third metal wire rings surrounds a third opening, and the orthographic projection of each of the third sub-pixels on the array substrate is located in the orthographic projection of the third opening on the array substrate; the area of the third opening located in the edge region is greater than the area of the third opening located in the middle region.

[0012] In a possible implementation, the first sub-pixel is a green light sub-pixel, the second sub-pixel is a red light sub-pixel, and the third sub-pixel is a blue light sub-pixel.

[0013] In a possible implementation, the edge region has two edge regions, and the two edge regions are symmetrically arranged along a center line of the middle region.

[0014] In a possible implementation, the middle region is a planar region, and the edge region is a curved surface connected to the planar region; in a direction away from the planar region at an intersection of the curved surface and the planar region, the line width of the first metal wire ring gradually increases.

[0015] In a possible implementation, the touch function layer further includes a first insulating layer, a connecting metal layer, and a second insulating layer, which are sequentially stacked on a side of the device layer away from the array substrate; the second insulating layer is provided with the touch electrode layer on a side away from the connecting metal layer; the connecting metal layer is provided with a plurality of spaced connecting lines, and the first metal wire ring is electrically connected to the connecting lines.

[0016] In a possible implementation, a projection of the connecting line on the array substrate is located in a space between a plurality of the sub-pixels in the projection of the array substrate.

[0017] A second aspect of the embodiments of the present application provides a display panel, the display panel having a middle region and an edge region connected to the middle region; the display panel includes an array substrate, a device layer, and a touch function layer which are sequentially stacked; the device layer has a plurality of sub-pixels which are spaced apart, and the plurality of sub-pixels include a first sub-pixel, a second sub-pixel, and a third sub-pixel; the second sub-pixel and the third sub-pixel have a luminance decay rate greater than a luminance decay rate of the first sub-pixel.

[0018] The touch function layer includes a touch electrode layer, and the touch electrode layer is provided with a plurality of second metal wire rings and a plurality of third metal wire rings which are electrically connected to each other; the plurality of second metal wire rings are arranged in one-to-one correspondence with the plurality of second sub-pixels, each of the second metal wire rings encloses a second opening, and a projection of each of the second sub-pixels on the array substrate is located in the second opening in a projection of the array substrate; an area of the second opening located in the edge region is greater than an area of the second opening located in the middle region.

[0019] The third metal wire ring is in one-to-one correspondence with the third sub-pixel, each third metal wire ring surrounds a third opening, and a projection of each third sub-pixel on the array substrate is located in the third opening in the projection of the array substrate; the third opening located in the edge region has an area greater than that of the third opening located in the middle region.

[0020] The display panel of the embodiment of the present application sets the touch electrode layer in the touch function layer as a plurality of second metal wire rings and a plurality of third metal wire rings that are electrically connected to each other, the plurality of second metal wire rings are in one-to-one correspondence with a plurality of second sub-pixels in the device layer, and the plurality of third metal wire rings are in one-to-one correspondence with a plurality of third sub-pixels in the device layer. Each second sub-pixel is located in a second opening surrounded by a second metal wire ring in the projection of the array substrate, and the light emitted by each second sub-pixel is emitted through the corresponding second opening. Each third sub-pixel is located in a third opening surrounded by a third metal wire ring in the projection of the array substrate, and the light emitted by each third sub-pixel is emitted through the corresponding third opening.

[0021] The embodiment of the present application also sets the area of the second opening located in the edge region to be greater than the area of the second opening in the middle region, and sets the area of the third opening located in the edge region to be greater than the area of the third opening in the middle region, so as to reduce the shielding area of the second metal wire ring in the edge region to the light emitted by the second sub-pixel, and reduce the shielding area of the third metal wire ring in the edge region to the light emitted by the third sub-pixel, thereby reducing the light attenuation rate of the light emitted by the second sub-pixel and the third sub-pixel in the edge region, so that the brightness proportion of different colors of light in the middle region is the same as that of different colors of light in the edge region, and the color deviation of the middle region and the edge region of the display panel is alleviated or eliminated.

[0022] The third aspect of the embodiment of the present application provides a display device, which comprises the display panel according to any one of the above.

[0023] The display device of the embodiment of the present application comprises the display panel according to any one of the above, so the display device also has the advantages of the display panel according to any one of the above, which will not be described here again. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0025] Figure 1This is a schematic diagram of each sub-pixel in the display panel and the touch electrode layer in one implementation of the first embodiment of this application;

[0026] Figure 2 for Figure 1 A cross-sectional view along the CC direction;

[0027] Figure 3 This is a schematic diagram of each sub-pixel and the touch electrode layer in another implementation of the first embodiment of this application;

[0028] Figure 4 This is a schematic diagram of each sub-pixel and the touch electrode layer in the display panel in the second embodiment of this application.

[0029] Explanation of reference numerals in the attached figures:

[0030] 10. Array substrate;

[0031] 20. Device layer;

[0032] 210. First sub-pixel;

[0033] 220, Second sub-pixel;

[0034] 230, Third sub-pixel;

[0035] 240, pixel unit;

[0036] 30. Encapsulation layer;

[0037] 40. Touch function layer;

[0038] 410. First insulating layer;

[0039] 420. Connecting metal layers;

[0040] 421. Connecting wire;

[0041] 430. Second insulating layer;

[0042] 431. Metal via;

[0043] 440. Touch electrode layer;

[0044] 441. First metal wire loop;

[0045] 442. First opening;

[0046] 443. Second metal wire loop;

[0047] 444. The second opening;

[0048] 445. Third metal wire loop;

[0049] 446. The third opening;

[0050] 450, optical glue layer. DETAILED DESCRIPTION

[0051] In the related art, when a display panel is viewed from the central normal direction of the display panel, color deviation occurs in the edge region and the middle region of the display panel. The inventors have found that the main cause of this is that the OLED display panel usually uses the microcavity effect to select, narrow and strengthen the light emitted by each sub-pixel, so as to improve the chroma of the OLED display panel and strengthen the luminous intensity of a specific wavelength.

[0052] Due to the existence of multi-beam interference, the viewing angle characteristics of each sub-pixel in the OLED display panel are affected, that is, as the viewing angle increases, the luminance decay rates of the light emitted by sub-pixels of different colors are different, resulting in differences in the luminance of different colors of light, so that the luminance proportions of different colors of light in the middle region and the edge region are different, thereby causing color deviation in the edge region and the middle region of the display panel. For example, as the viewing angle increases, the luminance decay rates of the light emitted by red sub-pixels, green sub-pixels and blue sub-pixels are different, and the luminance decay rates of red light and blue light are both greater than the luminance decay rate of green light, resulting in differences in the luminance of red light, green light and blue light, so that the luminance proportions of red light, green light and blue light in the edge region are different from those in the middle region, thereby causing the problem of cyan color deviation in the edge region of the display panel. This color deviation problem is more serious when the edge region is bent.

[0053] To solve the above technical problem, the inventors have tried to set the light extraction layer in the middle region and the edge region of the display panel to different thicknesses, so that the luminance decay of the light emitted by different sub-pixels is less than a set threshold value, so that the luminance decay rates of different sub-pixels are consistent, thereby reducing or eliminating the color deviation in the middle region and the edge region of the display panel. The inventors have also tried to set a luminous efficiency adjusting unit between the cathode and the light-emitting layer of each sub-pixel, and the vibration characteristic peak of the luminous efficiency adjusting unit of each sub-pixel coincides with the wavelength of the light-emitting layer of each sub-pixel, so as to adjust the luminance of the light emitted by each sub-pixel, so that the luminance decay rates of the light emitted by sub-pixels of different colors are consistent, thereby reducing or eliminating the color deviation in the middle region and the edge region of the display panel. However, the above two schemes have high requirements for the manufacturing precision, material performance, etc. of the light extraction layer and the luminous efficiency adjusting unit, and are difficult to implement.

[0054] To solve the above technical problems, the display panel of the embodiment of the present application sets the touch electrode layer in the touch function layer as a plurality of metal wire rings that are electrically connected to each other, the plurality of metal wire rings correspond one-to-one to a plurality of sub-pixels in the device layer, and the light emitted by each sub-pixel is emitted through an opening surrounded by the corresponding metal wire ring. The embodiment of the present application adjusts the opening area of the metal wire ring located in the edge region to adjust the shielding area of the metal wire ring to the light emitted by the sub-pixel, thereby adjusting the light attenuation rate of the light emitted by each sub-pixel in the edge region, so that the brightness proportion of light of different colors in the edge region is the same as the brightness proportion of light of different colors in the middle region, and the color deviation of the edge region and the middle region of the display panel is reduced or eliminated.

[0055] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0056] It should be noted that the size and shape of each figure in the drawings do not reflect the true proportions, but only serve to illustrate the content of the embodiments of the present application. And the same or similar reference numbers represent the same or similar elements or elements with the same or similar functions throughout.

[0057] Reference Figure 1 The first embodiment of the present application provides a display panel, which has a middle region A and an edge region B connected to the middle region A. Exemplarily, the edge region B can be one, and one edge region B can be connected to one side of the middle region A. The edge region B can also be two, and the two edge regions B are symmetrically arranged along the center line S of the middle region A. Exemplarily, the middle region A can be a plane, and the edge region B can be a curved surface connected to the plane, that is, the two sides of the display panel are 3D bent when the display module is manufactured, to form a curved display device, and improve user experience.

[0058] Reference Figure 2 The display panel can include an array substrate 10, a device layer 20, an encapsulation layer 30 and a touch function layer 40 arranged in sequence. Exemplarily, the array substrate 10 can include a substrate and a plurality of drive circuits formed on the substrate. The substrate can be a rigid substrate, such as a stainless steel plate; the substrate can also be a flexible substrate, such as a polyimide (PI) film, an ultra-thin glass film, etc. The display panel using a flexible substrate as the substrate can have bending, folding and other functions, and can meet different needs of users.

[0059] The device layer 20 is formed on the array substrate 10. The device layer 20 has a plurality of pixel units 240 arranged in a matrix. The pixel unit 240 can include a plurality of sub-pixels, which are connected to a plurality of driving circuits in the array substrate 10, and each sub-pixel can emit light to display an image by controlling the driving circuit. For example, each pixel unit 240 can include a first sub-pixel 210, a second sub-pixel 220, and a third sub-pixel 230.

[0060] Referring to Figure 1 The first sub-pixel 210, the second sub-pixel 220, and the third sub-pixel 230 in each pixel unit 240 are arranged at intervals. The first sub-pixel 210, the second sub-pixel 220, and the third sub-pixel 230 emit light of different colors, and different colors can be displayed by adjusting the brightness ratio of the light emitted by the first sub-pixel 210, the second sub-pixel 220, and the third sub-pixel 230, thereby realizing the display function of the display panel. For example, as the viewing angle increases, the brightness decay rate of the first sub-pixel 210 is less than that of the second sub-pixel 220 and the third sub-pixel 230. The first sub-pixel 210 can be a green light sub-pixel, the second sub-pixel 220 can be a red light sub-pixel, and the third sub-pixel 230 can be a blue light sub-pixel.

[0061] The encapsulation layer 30 is formed on the side of the device layer 20 away from the array substrate 10. The encapsulation layer 30 is used to protect the pixel units 240 in the device layer 20, prevent water and oxygen from entering the interior of the pixel units 240, and cause the light-emitting material in the pixel units 240 to fail, thereby ensuring the display function of the display panel. For example, the encapsulation layer 30 can be a thin film encapsulation, for example, the encapsulation layer 30 can be a laminated structure formed by a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer.

[0062] The touch function layer 40 is formed on the side of the encapsulation layer 30 away from the device layer 20, and the touch function layer 40 has a touch function. Through the touch function layer 40, the position and posture of a finger on the display panel can be obtained, and the display device can be controlled according to the position and posture of the finger.

[0063] Referring to Figure 1 and Figure 2The touch function layer 40 may include a touch electrode layer 440. The touch electrode layer 440 is used to input touch driving signals and to detect touch position and posture. For example, the touch electrode layer 440 may be provided with a plurality of first metal wire loops 441 that are electrically connected to each other. The plurality of first metal wire loops 441 are respectively arranged in a plurality of first sub-pixels 210. Each first metal wire loop 441 forms a first opening 442. The orthographic projection of each first sub-pixel 210 on the array substrate 10 is located within the orthographic projection of the first opening 442 on the array substrate 10, so that the light emitted by the first sub-pixel 210 can be emitted through the first opening 442.

[0064] The area of ​​the first opening 442 located in the edge region B can be smaller than the area of ​​the first opening 442 located in the middle region A, so as to increase the blocking area of ​​the first metal wire ring 441 in the edge region B on the light emitted by the first sub-pixel 210, increase the brightness attenuation rate of the light emitted by the first sub-pixel 210 in the edge region B, thereby making the brightness ratio of different colors of light in the middle region A the same as the brightness ratio of different colors of light in the edge region B, reducing or eliminating the color deviation between the middle region A and the edge region B of the display panel.

[0065] For example, when the position of the first metal wire loop 441 remains unchanged, the area of ​​the first opening 442 located in the edge region B can be made smaller than the area of ​​the first opening 442 located in the middle region A by adjusting the line width of the first metal wire loop 441. (See reference) Figure 1 The linewidth of the first metal loop 441 located in the edge region B is greater than that of the first metal loop 441 in the middle region A, which makes the area of ​​the first opening 442 in the edge region B smaller than that in the middle region A. When manufacturing the first metal loop 441, only the linewidth of the first metal loop 441 in the edge region B needs to be changed, without changing the position of the first metal loop 441, thus reducing the manufacturing difficulty and improving the ease of manufacturing the first metal loop 441.

[0066] In a direction from the middle area A to the edge area B, the line width of the first metal wire ring 441 in the edge area B can gradually increase (not shown in the figure). That is, the closer to the edge of the display panel, the smaller the area of the first opening 442, and the more the light emitted by the first sub-pixel 210 is blocked. In the related art, the closer to the edge of the display panel, the smaller the light attenuation rate of the light emitted by the first sub-pixel 210. In this implementation, the closer to the edge of the display panel, the more the light emitted by the first sub-pixel 210 is blocked, and the light attenuation rate of the light emitted by the first sub-pixel 210 can gradually increase, so that the brightness proportion of different colors of light in the middle area A is the same as the brightness proportion of different colors of light in the edge area B, further reducing or eliminating the color deviation of the middle area A and the edge area B of the display panel, and improving the uniformity of the chromaticity of the display panel.

[0067] When the middle area A is a plane and the edge area B is a curved surface, in a direction from the intersection of the curved surface and the plane to the plane, the line width of the first metal wire ring 441 can gradually increase. The increase range of the line width of the first metal wire ring 441 can be specifically set according to the curvature of the edge area B, which is not limited in the embodiments of the present application. For example, when the display panel is manufactured, the first metal wire ring 441 in the edge area B can be manufactured by gradient exposure.

[0068] Reference Figure 1 and Figure 2 The center of the first sub-pixel 210 in the orthographic projection of the array substrate 10 can coincide with the center of the first opening 442 in the orthographic projection of the array substrate 10. In a direction parallel to the array substrate 10, the distance between the circumferential edge of the first sub-pixel 210 and the circumferential edge of the first opening 442 is equal everywhere. In this way, the first opening 442 can uniformly block the light emitted by the first sub-pixel 210 in the circumferential direction of the first sub-pixel 210, so that the light attenuation rate of the light emitted by the first sub-pixel 210 in each direction can be increased, the consistency of the brightness proportion of the light emitted by the first sub-pixel 210 and the light of other colors in each direction can be improved, and the chromaticity uniformity of the display panel can be further improved.

[0069] The shape of the first opening 442 can match the shape of the first sub-pixel 210. For example, when the shape of the first sub-pixel 210 is rectangular, the shape of the first opening 442 is also rectangular. When the shape of the first sub-pixel 210 is circular, the shape of the first opening 442 is also circular. Of course, it can be understood that the shapes of the first sub-pixel 210 and the first opening 442 can also be other matching shapes, which will not be described herein.

[0070] Reference Figure 3The device layer 20 also has a plurality of second sub-pixels 220 and third sub-pixels 230 arranged at intervals. The touch electrode layer 440 is also provided with a plurality of second metal wire loops 443 and a plurality of third metal wire loops 445 which are electrically connected to each other. The plurality of second metal wire loops 443 are arranged in one-to-one correspondence with the plurality of second sub-pixels 220, each second metal wire loop 443 encloses a second opening 444, and the orthographic projection of each second sub-pixel 220 on the array substrate 10 is located within the orthographic projection of the second opening 444 on the array substrate 10, so that the light emitted by the second sub-pixel 220 can be emitted out through the second opening 444. The plurality of third metal wire loops 445 are arranged in one-to-one correspondence with the plurality of third sub-pixels 230, each third metal wire loop 445 encloses a third opening 446, and the orthographic projection of each third sub-pixel 230 on the array substrate 10 is located within the orthographic projection of the third opening 446 on the array substrate 10, so that the light emitted by the third sub-pixel 230 can be emitted out through the third opening 446.

[0071] In some implementations of the embodiments of the present application, the area of the second opening 444 located in the edge region B is greater than the area of the second opening 444 located in the middle region A, so as to reduce the shielding area of the second metal wire loop 443 in the edge region B to the light emitted by the second sub-pixel 220, and reduce the brightness decay rate of the light emitted by the second sub-pixel 220 in the edge region B. The area of the third opening 446 located in the edge region B is greater than the area of the third opening 446 located in the middle region A, so as to reduce the shielding area of the third metal wire loop 445 in the edge region B to the light emitted by the third sub-pixel 230, and reduce the brightness decay rate of the light emitted by the third sub-pixel 230 in the edge region B, so that the brightness proportion of different colors of light in the middle region A is the same as the brightness proportion of different colors of light in the edge region B, thereby reducing or eliminating the color deviation of the middle region A and the edge region B of the display panel.

[0072] Reference Figure 2 The touch function layer 40 can also include a first insulating layer 410, a connection metal layer 420 and a second insulating layer 430 which are sequentially stacked on the side of the device layer 20 away from the array substrate 10, i.e. in the direction of light emission of the device layer 20, i.e. in the direction of vertical upward in the middle of the array substrate 10. Figure 1 The second insulating layer 430 is provided with a touch electrode layer 440 on the side away from the connection metal layer 420. The connection metal layer 420 is provided with a plurality of connection lines 421 arranged at intervals, and the first metal wire loop 441 is electrically connected to the connection line 421. For example, the second insulating layer 430 is provided with a metal via hole 431, and the first metal wire loop 441 is electrically connected to the connection line 421 through the metal via hole 431. For example, the materials of the first insulating layer 410 and the second insulating layer 430 can include silicon nitride or silicon oxide, etc.

[0073] Reference Figure 2The connecting line 421 is in the orthographic projection of the array substrate 10 between the intervals of the plurality of sub-pixels, so as to avoid the connecting line 421 from blocking the light emitted by each sub-pixel and affecting the display effect of the display panel.

[0074] With reference to Figure 2 The touch function layer 40 further includes an optical adhesive layer 450 formed on the side of the touch electrode layer 440 away from the second insulating layer 430, for bonding other film layers of the display panel, such as a polarizing layer or a cover plate layer.

[0075] With reference to Figure 4 The second embodiment of the present application provides a display panel having a middle region A and an edge region B connected to the middle region A. The display panel includes an array substrate 10, a device layer and a touch function layer which are sequentially stacked. The device layer has a plurality of sub-pixels arranged at intervals, and the plurality of sub-pixels include a first sub-pixel 210, a second sub-pixel 220 and a third sub-pixel 230. The second sub-pixel 220 and the third sub-pixel 230 have a luminance decay rate greater than that of the first sub-pixel 210. The touch function layer includes a touch electrode layer provided with a plurality of second metal wire loops 443 and a plurality of third metal wire loops 445 which are electrically connected to each other.

[0076] The plurality of second metal wire loops 443 are arranged in one-to-one correspondence with the plurality of second sub-pixels 220, each second metal wire loop 443 encloses a second opening 444, and each second sub-pixel 220 is in the orthographic projection of the array substrate 10 within the second opening 444 in the orthographic projection of the array substrate 10. The plurality of third metal wire loops 445 are arranged in one-to-one correspondence with the plurality of third sub-pixels 230, each third metal wire loop 445 encloses a third opening 446, and each third sub-pixel 230 is in the orthographic projection of the array substrate 10 within the third opening 446 in the orthographic projection of the array substrate 10.

[0077] The display panel of the second embodiment of the present application differs from the display panel of the first embodiment in that the area of the second opening 444 in the edge region B is greater than the area of the second opening 444 in the middle region A. The area of the third opening 446 in the edge region B is greater than the area of the third opening 446 in the middle region A.

[0078] The display panel of the second embodiment of the present application sets the area of the second opening 444 in the edge area B to be greater than the area of the second opening 444 in the middle area A, and sets the area of the third opening 446 in the edge area B to be greater than the area of the third opening 446 in the middle area A, so as to reduce the area of the second metal wire ring 443 in the edge area B that blocks the light emitted by the second sub-pixel 220, and reduce the area of the third metal wire ring 445 in the edge area B that blocks the light emitted by the third sub-pixel 230, thereby reducing the light attenuation rate of the light emitted by the second sub-pixel 220 and the third sub-pixel 230 in the edge area B, so that the brightness proportion of different colors of light in the edge area B is the same as the brightness proportion of different colors of light in the middle area A, and the color deviation of the middle area and the edge area of the display panel is reduced or eliminated.

[0079] The other parts of the display panel of the second embodiment of the present application can refer to the description of the first embodiment of the present application, which will not be described here.

[0080] The embodiments of the present application also provide a display device, which comprises the display panel of any of the above embodiments.

[0081] The display device of the embodiments of the present application has the advantages of the display panel of any of the above embodiments, and the embodiments of the present application will not be described here.

[0082] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the above embodiments, or make equivalent replacement for part or all 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 has a middle region and an edge region connected to the middle region; the display panel comprises an array substrate, a device layer and a touch function layer which are sequentially stacked; the device layer has a plurality of sub-pixels which are arranged at intervals; a sub-pixel with the smallest luminance decay rate among the plurality of sub-pixels is a first sub-pixel; The touch function layer comprises a touch electrode layer which is provided with a plurality of first metal wire rings which are electrically connected to each other; the plurality of first metal wire rings are arranged in one-to-one correspondence with the plurality of first sub-pixels; each first metal wire ring encloses a first opening; the orthographic projection of each first sub-pixel on the array substrate is located within the orthographic projection of the first opening on the array substrate; The area of the first opening located in the edge region is smaller than the area of the first opening located in the middle region.

2. The display panel of claim 1, wherein, The line width of the first metal wire ring located in the edge region is greater than the line width of the first metal wire ring in the middle region.

3. The display panel of claim 1, wherein, In a direction along the middle region towards the edge region, the line width of the first metal wire ring in the edge region gradually increases.

4. The display panel of claim 1, wherein, The center of the orthographic projection of the first sub-pixel on the array substrate coincides with the center of the orthographic projection of the first opening on the array substrate; In a direction parallel to the array substrate, the distance between the circumferential edge of the first sub-pixel and the circumferential edge of the first opening is equal everywhere.

5. The display panel of claim 1, wherein, The device layer further has a plurality of second sub-pixels and a plurality of third sub-pixels which are arranged at intervals; the luminance decay rates of the second sub-pixels and the third sub-pixels are greater than the luminance decay rate of the first sub-pixel; The touch electrode layer is further provided with a plurality of second metal wire rings and a plurality of third metal wire rings which are electrically connected to each other; the plurality of second metal wire rings are arranged in one-to-one correspondence with the plurality of second sub-pixels; each second metal wire ring encloses a second opening; the orthographic projection of each second sub-pixel on the array substrate is located within the orthographic projection of the second opening on the array substrate; The area of the second opening located in the edge region is greater than the area of the second opening located in the middle region; The plurality of third metal wire rings are arranged in one-to-one correspondence with the plurality of third sub-pixels; each third metal wire ring encloses a third opening; the orthographic projection of each third sub-pixel on the array substrate is located within the orthographic projection of the third opening on the array substrate; The area of the third opening located in the edge region is greater than the area of the third opening located in the middle region.

6. The display panel of claim 5, wherein, The first sub-pixel is a green light sub-pixel, the second sub-pixel is a red light sub-pixel, and the third sub-pixel is a blue light sub-pixel.

7. The display panel according to any one of claims 1-6, wherein, The edge region has two edge regions which are symmetrically arranged along the center line of the middle region.

8. The display panel of claim 7, wherein, The middle region is a plane, and the edge region is a curved surface connected to the plane; in a direction away from the plane at the junction of the curved surface and the plane, the line width of the first metal wire ring gradually increases.

9. The display panel according to any one of claims 1-6, wherein, The touch function layer further comprises a first insulating layer, a connecting metal layer and a second insulating layer which are sequentially stacked on a side of the device layer opposite to the array substrate; the second insulating layer is provided with the touch electrode layer on a side opposite to the connecting metal layer; The connecting metal layer is provided with a plurality of spaced connecting lines, and the first metal wire ring is electrically connected with the connecting lines.

10. The display panel of claim 9, wherein, The connecting lines are in the projection of the array substrate and located between the sub-pixels.

11. A display panel, characterized by, The display panel has a middle region and an edge region connected with the middle region; the display panel comprises an array substrate, a device layer and a touch function layer which are sequentially stacked; the device layer has a plurality of sub-pixels which are spaced; the plurality of sub-pixels comprise first sub-pixels, second sub-pixels and third sub-pixels; the luminance decay rate of the second sub-pixels and the third sub-pixels is greater than that of the first sub-pixels. The touch function layer comprises a touch electrode layer which is provided with a plurality of second metal wire rings and a plurality of third metal wire rings which are electrically connected with each other; the plurality of second metal wire rings are one-to-one corresponding to the plurality of second sub-pixels; each second metal wire ring encloses a second opening; the projection of each second sub-pixel on the array substrate is located in the projection of the second opening on the array substrate; The area of the second opening located in the edge region is greater than that of the second opening located in the middle region; The plurality of third metal wire rings are one-to-one corresponding to the plurality of third sub-pixels; each third metal wire ring encloses a third opening; the projection of each third sub-pixel on the array substrate is located in the projection of the third opening on the array substrate; The area of the third opening located in the edge region is greater than that of the third opening located in the middle region.

12. A display device, characterized by comprising: The display panel comprises the display panel as claimed in any one of claims 1-11.

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