Display panel and display device

Abstract

The present invention provides a display panel and a display device. The display panel includes: multiple color resists and a black matrix, which are located on a side of multiple sub-pixels away from a base substrate. The black matrix forms an opening around the sub-pixels. The vertical projection of the sub-pixels on the base substrate is located within the vertical projection of at least part of the opening on the base substrate. The vertical projection of the color resists on the base substrate overlaps with the vertical projection of at least part of the opening on the base substrate. The color resists are arranged in a one-to-one correspondence with the sub-pixels. The area of ​​the black matrix per unit area in the second display area is greater than or equal to the area of ​​the black matrix per unit area in the first display area. The area of ​​the black matrix per unit area in the first display area is greater than the area of ​​the black matrix per unit area in the photosensitive element setting area. The present invention provides a display panel and a display device to achieve balanced transmittance and reflectance in the photosensitive element setting area, increase the brightness of light passing through the photosensitive element setting area, and reduce the reflectivity of the photosensitive element setting area.

Description

[0001] This application is a divisional application with the application date of June 29, 2020, application number 202010611770.5, and the name of the invention being “A display panel and display device”. Technical Field

[0002] The present invention relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0003] With the development of science and technology and the progress of society, people's dependence on the exchange and transmission of information is increasing. Display devices, as the main carrier and material basis for information exchange and transmission, have now become a hot topic of research for many scientists.

[0004] In order to realize functions such as video recording, it is often necessary to place a light sensor in the light sensor setting area of ​​the display panel. Ambient light can be transmitted to the light sensor through the light sensor setting area to realize functions such as video recording. The light sensor setting area can also display images, thereby realizing full-screen display. In order to reduce the reflectivity of external ambient light, polarizers are generally used in display panels, but the transmittance of polarizers is too low, which affects the brightness of light reaching the light sensor. If the polarizer in the light sensor setting area is removed, the reflectivity of the light sensor setting area increases, affecting the user experience. Summary of the Invention

[0005] The present invention provides a display panel and a display device to achieve balanced transmittance and reflectance of a light sensing element setting area, increase the brightness of light passing through the light sensing element setting area, and reduce the reflectance of the light sensing element setting area.

[0006] In a first aspect, an embodiment of the present invention provides a display panel, including:

[0007] A display area, the display area including a first display area, a second display area and a light sensing element setting area, the first display area at least partially surrounds the second display area, and the second display area surrounds the light sensing element setting area;

[0008] substrate;

[0009] A plurality of sub-pixels are located in the display area on one side of the base substrate; the number of the sub-pixels per unit area in the light sensing element setting area is less than the number of the sub-pixels per unit area in the first display area;

[0010] A plurality of color resists and a black matrix are located on a side of the plurality of sub-pixels away from the base substrate, the black matrix surrounds the plurality of sub-pixels to form an opening, the vertical projection of the sub-pixels on the base substrate is located within at least a portion of the vertical projection of the opening on the base substrate, the vertical projection of the color resist on the base substrate overlaps with at least a portion of the vertical projection of the opening on the base substrate, and the color resists are arranged in a one-to-one correspondence with the sub-pixels;

[0011] Among them, the area of ​​the black matrix per unit area in the second display area is greater than or equal to the area of ​​the black matrix per unit area in the first display area, and the area of ​​the black matrix per unit area in the first display area is greater than the area of ​​the black matrix per unit area in the photosensitive element setting area.

[0012] In a second aspect, an embodiment of the present invention provides a display device, comprising the display panel described in the first aspect.

[0013] In an embodiment of the present invention, the display panel includes a plurality of color resists. When ambient light is irradiated onto a sub-pixel in the display panel, the ambient light reflected by the sub-pixel is weakened after passing through the color resist corresponding to the sub-pixel, thereby reducing the reflectivity of the area where the light sensing element is set. The display panel also includes a black matrix. In a direction perpendicular to the base substrate, the black matrix and the sub-pixel do not overlap. When ambient light is irradiated onto an area outside the sub-pixel in the display panel, the ambient light reflected in at least part of the area can be absorbed by the black matrix, thereby reducing the reflectivity of the area where the light sensing element is set. Furthermore, in an embodiment of the present invention, the area of ​​the black matrix per unit area in the second display area is greater than or equal to the area of ​​the black matrix per unit area in the first display area, that is, the pattern density of the black matrix in the second display area is greater than the pattern density of the black matrix in the first display area, so that the second display area has a lower reflectivity than the first display area, so as to minimize the overall reflectivity of the display area. The area of ​​the black matrix per unit area in the first display area is larger than the area of ​​the black matrix per unit area in the photosensitive element setting area, that is, the graphic density of the black matrix in the first display area is greater than the graphic density of the black matrix in the photosensitive element setting area, thereby preventing excessive black matrix from being set in the photosensitive element setting area, thereby increasing the brightness of light passing through the photosensitive element setting area. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of a top view of a display panel provided by an embodiment of the present invention;

[0015] Figure 2 for Figure 1 A schematic diagram of an enlarged structure of the middle S1 region;

[0016] Figure 3 for Figure 1 Another enlarged structural diagram of the middle S1 region;

[0017] Figure 4 For the Figure 2 Schematic diagram of the cross-sectional structure of AA';

[0018] Figure 5 A schematic cross-sectional view of another display panel provided by an embodiment of the present invention;

[0019] Figure 6 A schematic cross-sectional view of another display panel provided by an embodiment of the present invention;

[0020] Figure 7 for Figure 2 A schematic diagram of an enlarged structure of the S2 region;

[0021] Figure 8 A partial structural top view of another display panel provided by an embodiment of the present invention;

[0022] Figure 9 For the Figure 8 Schematic diagram of the cross-sectional structure of BB';

[0023] Figure 10 A schematic cross-sectional view of another display panel provided by an embodiment of the present invention;

[0024] Figure 11 A partial structural top view of another display panel provided by an embodiment of the present invention;

[0025] Figure 12 For the Figure 11 Schematic diagram of the cross-sectional structure of CC';

[0026] Figure 13 A partial structural top view of another display panel provided by an embodiment of the present invention;

[0027] Figure 14 For the Figure 13 Schematic diagram of the cross-sectional structure of DD';

[0028] Figure 15 A partial structural top view of another display panel provided by an embodiment of the present invention;

[0029] Figure 16 For the Figure 15 Schematic diagram of the cross-sectional structure of EE';

[0030] Figure 17 A partial structural top view of another display panel provided by an embodiment of the present invention;

[0031] Figure 18 For the Figure 17 Schematic diagram of the cross-sectional structure of FF';

[0032] Figure 19 A schematic cross-sectional view of another display panel provided by an embodiment of the present invention;

[0033] Figure 20 A schematic structural diagram of a display device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0034] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0035] Figure 1 A schematic diagram of a top view of a display panel provided by an embodiment of the present invention is shown. Figure 2 for Figure 1 A schematic diagram of an enlarged structure of the S1 region in the middle. Figure 3 for Figure 1 Another enlarged structural diagram of the S1 region, Figure 4 For the Figure 2 Schematic diagram of the cross-section structure of AA', combined with reference Figure 1-Figure 4 The display panel includes a display area 100, which includes a first display area 101, a second display area 102 and a light sensing element setting area 103. The first display area 101 at least partially surrounds the second display area 102 ( Figure 1(The outer edge of the U-shaped second display area 102 is used as an example for explanation, but is not limited thereto). The second display area 102 surrounds the light sensor arrangement area 103. The display panel includes a plurality of sub-pixels 20, a plurality of color resists 40, and a black matrix 30. The plurality of sub-pixels 20 are located within the display area 100 on one side of the base substrate 10. The number of sub-pixels 20 per unit area in the light sensor arrangement area 103 is less than the number of sub-pixels 20 per unit area in the first display area 101. In other words, the sub-pixel density in the light sensor arrangement area 103 is less than that in the first display area 101. As a result, the area between adjacent sub-pixels 20 in the light sensor arrangement area 103 can transmit ambient light, increasing the brightness of light passing through the light sensor arrangement area 103. The plurality of color resists 40 and the black matrix 30 are located on the side of the plurality of sub-pixels 20 away from the base substrate 10. The black matrix 30 forms an opening 310 around the plurality of sub-pixels 20. The opening 310 is an area where the black matrix 30 is not located. The opening 310 can be formed, for example, in the black matrix layer using a mask etching process. The vertical projection of the sub-pixel 20 on the substrate 10 is located within the vertical projection of at least a portion of the opening 310 on the substrate 10. The vertical projection of the color resist 40 on the substrate 10 overlaps with the vertical projection of at least a portion of the opening 310 on the substrate 10. The color resist 40 is arranged in a one-to-one correspondence with the sub-pixel 20. In each embodiment of the present invention, at least a portion of the openings 310 refers to at least a portion of the openings 310 among the plurality of openings 310, for example, at least 10 openings 310 among 100 openings 310. In particular, the area of ​​the black matrix 30 per unit area in the second display area 102 is greater than or equal to the area of ​​the black matrix 30 per unit area in the first display area 101, and the area of ​​the black matrix 30 per unit area in the first display area 101 is greater than the area of ​​the black matrix 30 per unit area in the photosensitive element setting area 103.

[0036] In an embodiment of the present invention, the display panel includes a plurality of color resists 40. When ambient light irradiates a sub-pixel 20 in the display panel, the ambient light reflected by the sub-pixel 20 is weakened after passing through the color resist 40 corresponding to the sub-pixel 20, thereby reducing the reflectivity of the light sensing element setting area 103. The display panel also includes a black matrix 30. In a direction perpendicular to the base substrate 10, the black matrix 30 does not overlap with the sub-pixel 20. When ambient light irradiates an area outside the sub-pixel 20 in the display panel, the ambient light reflected in at least a portion of the area can be absorbed by the black matrix 30, thereby reducing the reflectivity of the light sensing element setting area 103. Furthermore, in an embodiment of the present invention, the area of ​​the black matrix 30 per unit area in the second display area 102 is greater than or equal to the area of ​​the black matrix 30 per unit area in the first display area 101. That is, the pattern density of the black matrix 30 in the second display area 102 is greater than the pattern density of the black matrix 30 in the first display area 101. This allows the second display area 102 to have a lower reflectivity than the first display area 101, thereby minimizing the overall reflectivity of the display area 100. The area of ​​the black matrix 30 per unit area in the first display area 101 is greater than the area of ​​the black matrix 30 per unit area in the photosensitive element placement area 103. That is, the pattern density of the black matrix 30 in the first display area 101 is greater than the pattern density of the black matrix 30 in the photosensitive element placement area 103. This prevents the placement of an excessive amount of black matrix 30 in the photosensitive element placement area 103, thereby increasing the brightness of light passing through the photosensitive element placement area 103.

[0037] For example, in some embodiments, the area of ​​the black matrix 30 per unit area in the second display area 102 is greater than the area of ​​the black matrix 30 per unit area in the first display area 101. In other embodiments, the area of ​​the black matrix 30 per unit area in the second display area 102 is equal to the area of ​​the black matrix 30 per unit area in the first display area 101. It should be noted that the reflectivity of the first display area 101, the second display area 102, and the light sensing element setting area 103 is not only related to the area of ​​the black matrix 30 per unit area, but also to other factors, such as the thickness of the black matrix 30, the reflectivity at the position of the opening 310, etc. The reflectivity at the position of the opening 310 may include, for example, the area and reflectivity of the metal film layer exposed by the opening 310, or the reflectivity of the non-metal film layer exposed by the opening 310.

[0038] For example, refer to Figure 2 、 Figure 3 and Figure 4, the number of sub-pixels 20 per unit area in the second display area 102 is equal to the number of sub-pixels 20 per unit area in the light sensor setting area 103. In the embodiment of the present invention, the sub-pixel density in the second display area 102 is equal to the sub-pixel density in the light sensor setting area 103. Therefore, when forming the sub-pixels 20, the second display area 102 and the light sensor setting area 103 have the same sub-pixel 20 arrangement, which reduces the difficulty of manufacturing the display panel. In other embodiments, the number of sub-pixels 20 per unit area in the second display area 102 can be set to be less than the number of sub-pixels 20 per unit area in the first display area 101, and the number of sub-pixels 20 per unit area in the second display area 102 can be greater than the number of sub-pixels 20 per unit area in the light sensor setting area 103. That is, the second display area 102 is used as a transition zone for display, thereby optimizing the visual experience of the display area 100.

[0039] For example, refer to Figure 2 、 Figure 3 and Figure 4 In the direction perpendicular to the base substrate 10, in the photosensitive element setting area 103, the area between adjacent black matrices 30 is a light-transmitting area. When the external ambient light is irradiated to the photosensitive element setting area 103, it can pass through the light-transmitting area in the photosensitive element setting area 103 and irradiate the backlight side of the display panel.

[0040] Optionally, refer to Figure 2 、 Figure 3 and Figure 4 The black matrix 30 in the second display area 102 covers all areas outside the openings 310. In the embodiment of the present invention, in the second display area 102, sub-pixels 20 can be disposed in at least some of the openings 310, and all areas outside the openings 310 are completely covered by the black matrix 30, thereby minimizing the reflectivity of the second display area 102 and reducing the overall reflectivity of the display area 100. In other embodiments, multiple separate black matrices 30 can be disposed in the second display area 102, with the area between adjacent black matrices 30 being a light-transmitting area.

[0041] Optionally, refer to Figure 2 、 Figure 3 and Figure 4, the display panel also includes a plurality of thin film transistors 60. The plurality of thin film transistors 60 include a first thin film transistor 601, which is located in the second display area 102. The first thin film transistor 601 is located between the black matrix 30 and the base substrate 10, and is electrically connected to the sub-pixel 20 in the photosensitive element setting area 103. In an embodiment of the present invention, the first thin film transistor 601 for driving the sub-pixel 20 in the photosensitive element setting area 103 is set in the second display area 102, thereby expanding the light transmission area in the photosensitive element setting area 103 and increasing the brightness of light passing through the photosensitive element setting area 103. In an embodiment of the present invention, the first thin film transistor 601 set in the second display area 102 is covered by the black matrix 30, and the external ambient light irradiated to the first thin film transistor 601 is absorbed by the black matrix 30, thereby avoiding the first thin film transistor 601 from reflecting the external ambient light, and reducing the overall reflectivity of the display area 100.

[0042] For example, refer to Figure 3 , in order to illustrate the arrangement of the first thin film transistor 601 in the second display area 102, Figure 3 The black matrix 30 and other structures in the second display area 102 are omitted. The first thin film transistor 601 is disposed in the area outside the opening 310 in the second display area 102. It should be noted that the embodiment of the present invention does not limit the arrangement of the first thin film transistor 601.

[0043] For example, refer to Figure 3 The display panel further includes a first trace 81 ( Figure 3 (In the figure, only one first line 81 is used for illustration and is not intended to limit the present invention.) One end of the first line 81 is electrically connected to the first thin-film transistor 601, and the other end of the first line 81 is electrically connected to the sub-pixel 20 in the light-sensing element arrangement area 103. The transmittance of the first line 81 is greater than a first preset value. For example, the transmittance of the first line 81 is greater than 90%, 95%, or 99%. In other words, the first line 81 is a transparent line, thereby reducing the reflectivity of the first line 81 to external ambient light in the light-sensing element arrangement area 103.

[0044] Optionally, refer to Figure 2 、 Figure 3 and Figure 4The plurality of thin film transistors 60 further include a second thin film transistor 602 and a third thin film transistor 603. The second thin film transistor 602 is located in the second display area 102 and is electrically connected to the sub-pixel 20 in the second display area 102. The third thin film transistor 603 is located in the first display area 101, and is located between the sub-pixel 20 in the first display area 101 and the base substrate 10, and is electrically connected to the sub-pixel 20 in the first display area 101. The vertical projection areas of the first thin film transistor 601 and the second thin film transistor 602 on the base substrate 10 are both smaller than the vertical projection area of ​​the third thin film transistor 603 on the base substrate 10. Since the first thin film transistor 601 for driving the sub-pixel 20 in the light sensing element setting area 103 is set in the second display area 102, the second display area 102 includes the first thin film transistor 601 and the second thin film transistor 602. Therefore, in the embodiment of the present invention, the sizes of the first thin film transistor 601 and the second thin film transistor 602 are reduced so that the first thin film transistor 601 and the second thin film transistor 602 are disposed within a limited area of ​​the second display area 102, thereby reducing the difficulty of disposing the first thin film transistor 601 and the second thin film transistor 602. In other embodiments, the areas of the vertical projections of the first thin film transistor 601 and the second thin film transistor 602 on the base substrate 10 may be equal to the area of ​​the vertical projection of the third thin film transistor 603 on the base substrate 10.

[0045] For example, refer to Figure 2 、 Figure 3 and Figure 4 The second thin film transistor 602 is located in the second display area 102, and is located between the sub-pixel 20 in the second display area 102 and the base substrate 10. In other embodiments, the second thin film transistor 602 may not overlap with the sub-pixel 20, and the present invention is not limited thereto.

[0046] Optionally, refer to Figure 2 and Figure 3 , the edge of the sub-pixel 20 is projected on the base substrate 10 as a first figure, and in the light sensing element setting area 103, the edge of the opening 310 is vertically projected on the base substrate 10 as a second figure, and the shape of the second figure is consistent with the shape of the first figure. In other words, the shape of the second figure is the same as the shape of the first figure, but the second figure is not the same size as the first figure. That is, the first figure is similar to the second figure. In the embodiment of the present invention, the edge of the sub-pixel 20 in the light sensing element setting area 103 is similar to the edge of the opening 310, so that the area of ​​the black matrix 30 in the light sensing element setting area 103 can be minimized, and the area of ​​the light-transmitting area in the light sensing element setting area 103 can be increased, thereby increasing the brightness of light passing through the light sensing element setting area 103.

[0047] For example, refer to Figure 2 and Figure 3 The edge of the sub-pixel 20 is projected on the base substrate 10 as a first rectangle, and the edge of the opening 310 in the light sensing element setting area 103 is vertically projected on the base substrate 10 as a second rectangle.

[0048] On the basis of reducing the overall reflectivity of the display area 100, at least one of the thickness of the black matrix 30, the distance between the edge of the opening 310 and the edge of the sub-pixel 20, and the opening of the second opening 312 in the second transition area 102 can be set to achieve balanced reflectivity of the first display area 101, the second display area 102, and the photosensitive element setting area 103, so that the difference in reflectivity between adjacent two of the first display area 101, the second display area 102, and the photosensitive element setting area 103 is less than a second preset value, which can be, for example, 10%, 5%, or 1%.

[0049] Figure 5 A schematic cross-sectional view of another display panel provided by an embodiment of the present invention, referring to Figure 5 The black matrix 30 includes a first black matrix 31 located in the first display area 101, a second black matrix 32 located in the second display area 102, and a third black matrix 33 located in the light sensing element setting area 103. The thickness of the second black matrix 32 is less than the thickness of the third black matrix 33, and the thickness of the third black matrix 33 is less than the thickness of the first black matrix 31. Since the area of ​​the black matrix 30 per unit area in the second display area 102 is greater than or equal to the area of ​​the black matrix 30 per unit area in the first display area 101, the area of ​​the black matrix 30 per unit area in the first display area 101 is greater than the area of ​​the black matrix 30 per unit area in the light sensing element setting area 103. The reflectivity per unit area in the second display area 102 is greater than the reflectivity per unit area in the first display area 101, and the reflectivity per unit area in the first display area 101 is greater than the reflectivity per unit area in the photosensitive element setting area 103. In the embodiment of the present invention, the first black matrix 31 in the first display area 101 having the highest reflectivity per unit area has the largest thickness, the second black matrix 32 in the second display area 102 having the lowest reflectivity per unit area has the smallest thickness, and the third black matrix 33 in the photosensitive element setting area 103 having a medium reflectivity per unit area has a medium thickness. Thus, on the basis of reducing the overall reflectivity of the display area 100, the reflectivities of the first display area 101, the second display area 102, and the photosensitive element setting area 103 are balanced, so that the difference in reflectivity between adjacent ones of the first display area 101, the second display area 102, and the photosensitive element setting area 103 is as small as possible.

[0050] Figure 6 A schematic cross-sectional view of another display panel provided by an embodiment of the present invention, referring to Figure 6, the thickness of the second black matrix 32 gradually increases along the direction from the first display area 101 to the light sensor arrangement area 103. In the embodiment of the present invention, in order to match the reflectivity per unit area in the first display area 101 with the reflectivity per unit area in the light sensor arrangement area 103, the thickness of the second black matrix 32 is configured to gradually increase along the direction from the first display area 101 to the light sensor arrangement area 103, while the reflectivity per unit area in the second display area 102 gradually decreases along the direction from the first display area 101 to the light sensor arrangement area 103. Thus, with respect to the reflectivity per unit area, the second display area 102 serves as a reflectivity transition zone, optimizing the visual experience.

[0051] Figure 7 for Figure 2 A schematic diagram of an enlarged structure of the S2 region, see Figure 2 and Figure 7The plurality of sub-pixels 20 are arranged in an array along a first direction X and a second direction Y, with the first direction X intersecting the second direction Y. Along the first direction X, the distance between the vertical projection of the edge of the opening 310 on the substrate 10 and the vertical projection of the sub-pixel 20 exposed by the opening 310 on the substrate 10 is a first distance D1. Along the second direction Y, the distance between the vertical projection of the edge of the opening 310 on the substrate 10 and the vertical projection of the sub-pixel 20 exposed by the opening 310 on the substrate 10 is a second distance D2. The first distance D1 in the second display area 102 is greater than the first distance D1 in the light sensor arrangement area 103, which is greater than the first distance D1 in the first display area 101; and / or the second distance D2 in the second display area 102 is greater than the second distance D2 in the light sensor arrangement area 103, which is greater than the second distance D2 in the first display area 101. The further the distance between the edge of the sub-pixel 20 and the edge of the opening 310, the more the metal film layer in the sub-pixel 20 or the metal film layer below the sub-pixel 20 is exposed, and the higher the reflectivity at the opening 310. The closer the distance between the edge of the sub-pixel 20 and the edge of the opening 310, the less the metal film layer in the sub-pixel 20 or the metal film layer below the sub-pixel 20 is exposed, and the lower the reflectivity at the opening 310. The metal film layer exposed by the opening 310 will be further described later. Since the area of ​​the black matrix 30 per unit area in the second display area 102 is greater than or equal to the area of ​​the black matrix 30 per unit area in the first display area 101, and the area of ​​the black matrix 30 per unit area in the first display area 101 is greater than the area of ​​the black matrix 30 per unit area in the photosensitive element setting area 103, the reflectivity per unit area in the second display area 102 is greater than the reflectivity per unit area in the first display area 101, and the reflectivity per unit area in the first display area 101 is greater than the reflectivity per unit area in the photosensitive element setting area 103. In the embodiment of the present invention, the first display area 102 having the highest reflectivity per unit area has the highest reflectivity per unit area. 01 has the smallest area of ​​the metal film layer exposed by the opening 310, the largest area of ​​the metal film layer exposed by the opening 310 in the second display area 102 having the lowest reflectivity per unit area, and the metal film layer exposed by the opening 310 in the photosensitive element setting area 103 having a medium reflectivity per unit area has a medium area. Thus, on the basis of reducing the overall reflectivity of the display area 100, the reflectivities of the first display area 101, the second display area 102 and the photosensitive element setting area 103 are balanced, so that the reflectivity difference between adjacent ones of the first display area 101, the second display area 102 and the photosensitive element setting area 103 is as small as possible.

[0052] For the sake of clarity, in the embodiment of the present invention, the first distance D1 in the first display area 101, the second display area 102, and the light sensing element setting area 103 is referred to as the first horizontal distance D11, the second horizontal distance D12, and the third horizontal distance D13, respectively. The second distance D2 in the first display area 101, the second display area 102, and the light sensing element setting area 103 is referred to as the first vertical distance D21, the second vertical distance D22, and the third vertical distance D23, respectively. In one embodiment, D12>D13>D11 can be set. In another embodiment, D22>D23>D21 can be set. In another embodiment, D12>D13>D11, and D22>D23>D21 can also be set.

[0053] It should be noted that the above embodiments can be combined with each other. For example, when the thickness of the second black matrix 32 is set to be smaller than the thickness of the third black matrix 33, and the thickness of the third black matrix 33 is set to be smaller than the thickness of the first black matrix 31, the first distance D1 in the second display area 102 is set to be larger than the first distance D1 in the photosensitive element setting area 103, and the first distance D1 in the photosensitive element setting area 103 is set to be larger than the first distance D1 in the first display area 101; and / or the second distance D2 in the second display area 102 is set to be larger than the second distance D2 in the photosensitive element setting area 103, and the second distance D2 in the photosensitive element setting area 103 is set to be larger than the second distance D2 in the first display area 101. By adjusting the distance between the edge of the opening 310 and the edge of the sub-pixel 20, as well as the thickness of the black matrix 30, the overall reflectivity of the display area 100 is reduced, and the reflectivities of the first display area 101, the second display area 102, and the photosensitive element setting area 103 are balanced.

[0054] For example, refer to Figure 2 and Figure 3 Multiple pixel units are arranged in an array along a first direction X and a second direction Y within the light sensing element arrangement area 103. Each pixel unit includes three sub-pixels 20 arranged in a herringbone pattern. Within a pixel unit, two sub-pixels 20 are located in the same column in the second direction Y, while another sub-pixel 20 is located in a different column from the two sub-pixels 20. In other embodiments, the display panel may have other sub-pixel arrangements, which are not limited by the present invention.

[0055] For example, refer to Figure 2 and Figure 3 In the light sensing element setting area 103, a pixel unit array consisting of three sub-pixels 20 is arranged, and the area between two adjacent pixel units is a light-transmitting area. In other embodiments, the three sub-pixels 20 in a pixel unit can also be discretely distributed, and the area between adjacent sub-pixels 20 is a light-transmitting area.

[0056] Figure 8A partial structural top view of another display panel provided by an embodiment of the present invention, Figure 9 For the Figure 8 Schematic diagram of the cross-section structure of BB', refer to Figure 8 and Figure 9 The plurality of sub-pixels 20 include display sub-pixels 201 and dummy sub-pixels 202. The first display area 101 includes display sub-pixels 201, and the second display area 102 includes display sub-pixels 201 and dummy sub-pixels 202. The number of display sub-pixels 201 per unit area in the second display area 102 is less than the number of display sub-pixels 201 per unit area in the first display area 101. The first display area 101 is a main display area, and the second display area 102 is a transitional display area. The plurality of openings 310 include a first opening 311 and a second opening 312. The vertical projection of the display sub-pixel 201 on the substrate 10 is located within the vertical projection of the first opening 311 on the substrate 10, and the first opening 311 exposes the display sub-pixel 201. The vertical projection of the dummy sub-pixel 202 on the substrate 10 is located within at least a portion of the vertical projection of the second opening 312 on the substrate 10, and at least a portion of the second opening 312 exposes the dummy sub-pixel 202. The display sub-pixel 201 is used for normal light-emitting display, and the dummy sub-pixel 202 is not used for light-emitting display. In the embodiment of the present invention, in addition to the first opening 311 exposing the display sub-pixel 201, the second display area 102 is also provided with a second opening 312 exposing the dummy sub-pixel 202. Compared with covering all areas outside the first opening 311 with the black matrix 30, the coverage area of ​​the black matrix 30 is relatively reduced, thereby balancing the reflectivity of the first display area 101, the second display area 102, and the light-sensing element setting area 103, so that the difference in reflectivity between adjacent ones of the first display area 101, the second display area 102, and the light-sensing element setting area 103 is minimized.

[0057] For example, refer to Figure 8 and Figure 9 , the light sensing element arrangement area 103 includes the display sub-pixel 201, and does not include the dummy sub-pixel 202. The dummy sub-pixel 202 is only arranged in the second display area 102. The dummy sub-pixel 202 is provided with a second thin film transistor 602 electrically connected thereto. In other embodiments, only the dummy sub-pixel 202 may be provided, without providing the second thin film transistor 602 electrically connected thereto.

[0058] Optionally, refer to Figure 8 and Figure 9The area of ​​the first opening 311 vertically projected on the base substrate 10 is larger than the area of ​​the second opening 312 vertically projected on the base substrate 10. In the embodiment of the present invention, in addition to the first opening 311 exposing the display sub-pixel 201, the second opening 312 exposing the dummy sub-pixel 202 is also provided in the second display area 102. Compared with covering all areas outside the first opening 311 with the black matrix 30, the coverage area of ​​the black matrix 30 is relatively reduced, and the reflectivity of the second display area 102 is increased. Since the dummy sub-pixel 202 does not display an image, the dummy sub-pixel 202 can be set at the vacant sub-pixel position. At the same time, the area of ​​the second opening 312 where the dummy sub-pixel 202 is located is set to be smaller than the area of ​​the first opening 311, thereby ensuring that the reflectivity of the second display area 102 is not too large and ensuring that the display area 100 as a whole has a low reflectivity. The vacant sub-pixel position refers to a position where a sub-pixel 20 can be disposed but is not disposed in the second display area 102 relative to the sub-pixel density in the first display area 101 .

[0059] Optionally, refer to Figure 9 The sub-pixel 20 includes a first electrode 21, an organic light-emitting functional layer 22, and a second electrode 23. The organic light-emitting functional layer 22 is located between the first electrode 21 and the second electrode 23. The display panel also includes a pixel defining layer 50, which is located between the first electrode 21 and the second electrode 33. The pixel defining layer 50 includes a plurality of through holes 51. The through holes 51 are located within the vertical projection of the first opening 311 on the base substrate 10 when vertically projected on the base substrate 10. At the position of the second opening 312, no through hole 51 is provided on the pixel defining layer 50. In the display sub-pixel 201, the organic light-emitting functional layer 22 is located in the through hole 51. The organic light-emitting functional layer 22 is in contact with the first electrode 21, so that the first electrode 21 and the second electrode 23 can inject holes and electrons into the organic light-emitting functional layer 22. The holes and electrons recombine in the organic light-emitting functional layer 22 to form excitons. The exciton transition causes the display sub-pixel 201 to emit light. In the dummy sub-pixel 202 , a pixel defining layer 50 is provided between the first electrode 21 and the organic light-emitting functional layer 22 . The first electrode 21 and the light-emitting functional layer 22 are electrically insulated, so that the dummy sub-pixel 202 cannot emit light for display.

[0060] For example, refer to Figure 9The metal film layer in the sub-pixel 20 is mainly the first electrode 21, which is a reflective electrode. The display panel is a top-emitting display panel. In other embodiments, the display panel can also be a bottom-emitting display panel. The metal film layer below the sub-pixel 20 is mainly composed of a thin film transistor 60 and various signal lines (not shown in the figure), such as data lines, scan lines, and power lines. The thin film transistor 60 includes a source electrode 61, a semiconductor layer 62, a gate electrode 63, and a drain electrode 64. The source electrode 61, the gate electrode 63, and the drain electrode 64 can be made of metal material and are a metal film layer.

[0061] For example, refer to Figure 9 In each embodiment of the present invention, the vertical projection of the sub-pixel 20 on the base substrate 10 is the vertical projection of the organic light-emitting functional layer 22 on the base substrate 10. The vertical projection of the sub-pixel 20 on the substrate 10 is located within the vertical projection of the opening 310 on the base substrate 10. Figure 9 As shown, in some embodiments, the color resist 40 may be located only in the opening 310. In other embodiments, a portion of the color resist 40 may be located in the opening 310, and another portion of the color resist 40 may be located on the side of the black matrix 30 away from the base substrate 10. The vertical projection of the organic light-emitting functional layer 22 on the base substrate 10 is located within the vertical projection of the first electrode 21 on the base substrate 10, and the vertical projection of the opening 310 on the base substrate 10 is located within the vertical projection of the first electrode 21 on the base substrate 10. The black matrix 30 is used to shield the edge of the first electrode 21. Since the first electrode 21 and the thin-film transistor 60 do not completely overlap in the direction perpendicular to the base substrate 10, the black matrix 30 is also used to shield the thin-film transistor 60 to prevent the thin-film transistor 60 from reflecting external ambient light.

[0062] Optionally, refer to Figure 8 and Figure 9 , the display panel also includes a plurality of thin film transistors 60, and the thin film transistors 60 are electrically connected to the first electrode 21. The plurality of sub-pixels 20 are arranged in an array along a first direction X and a second direction Y, and the first direction X intersects with the second direction Y. The number of thin film transistors 60 arranged in a row along the first direction X in the first display area 101 is equal to the number of thin film transistors 60 arranged in a row along the first direction X in the second display area 102. In an embodiment of the present invention, the number of thin film transistors 60 in a row in the first display area 101 is equal to the number of thin film transistors 60 in a row in the second display area 102. Therefore, the number of thin film transistors 60 in a row driven by the scan lines (not shown in the figure) in the first display area 101 and the second display area 102 is the same, and the scan lines in the first display area 101 and the second display area 102 have the same load, thereby avoiding the occurrence of uneven display due to unequal loads.

[0063] Figure 10A schematic cross-sectional view of another display panel provided by an embodiment of the present invention, referring to Figure 10 , the number of first openings 311 in the second display area 102 is greater than the number of second openings 312 in the second display area 102. In the embodiment of the present invention, since the dummy sub-pixel 202 does not display an image, the dummy sub-pixel 202 can be set at the vacant sub-pixel position, and the area of ​​the second openings 312 where the dummy sub-pixel 202 is located is smaller than the number of the first openings 311, so as to ensure that the reflectivity of the second display area 102 is not too large, and the display area 100 as a whole has a low reflectivity. In other embodiments, the area of ​​the first opening 311 perpendicularly projected on the base substrate 10 can also be set to be greater than the area of ​​the second opening 312 perpendicularly projected on the base substrate 10, and the number of the first openings 311 in the second display area 102 can be greater than the number of the second openings 312 in the second display area 102, but the present invention is not limited to this.

[0064] For example, refer to Figure 8 and Figure 10 Along the first direction X, the distance between any two adjacent second openings 312 in a row is equal, and the distance between any two adjacent dummy sub-pixels 202 in a row is equal. The second openings 312 and the dummy sub-pixels 202 in the second openings 312 are evenly distributed, and the second display area 102 reflects ambient light more evenly overall.

[0065] Figure 11 A partial structural top view of another display panel provided by an embodiment of the present invention, Figure 12 For the Figure 11 Schematic diagram of the cross-section structure of CC', refer to Figure 11 and Figure 12The plurality of openings 310 include a first opening 311 and a second opening 312. The vertical projection of the sub-pixel 20 on the substrate 10 is located within the vertical projection of the first opening 311 on the substrate 10, and at least a portion of the second opening 312 is located in the region where the gaps between the sub-pixels 20 are located. In various embodiments of the present invention, the region where the gaps between the sub-pixels 20 are located is the region outside the sub-pixels 20. In the embodiment of the present invention, in addition to the first opening 311 that exposes the sub-pixel 20 (specifically, the display sub-pixel 201), the second opening 312 is also provided in the second display area 102. At least a portion of the second opening 312 does not overlap with the sub-pixel 20. Compared to covering all areas outside the first opening 311 with the black matrix 30, the coverage area of ​​the black matrix 30 is relatively reduced, thereby balancing the reflectivity of the first display area 101, the second display area 102, and the light sensing element setting area 103, so that the difference in reflectivity between adjacent areas of the first display area 101, the second display area 102, and the light sensing element setting area 103 is minimized.

[0066] For example, refer to Figure 11 and Figure 12 , the second openings 312 also do not overlap with the thin film transistor 60. All of the second openings 312 are disposed in the region where the gaps between the sub-pixels 20 are located. In other embodiments, when some of the second openings 312 are located in the region where the gaps between the sub-pixels 20 are located, another portion of the second openings 312 may be disposed to overlap with the thin film transistor 60, and / or another portion of the second openings 312 may overlap with the dummy sub-pixel.

[0067] For example, refer to Figure 11 and Figure 12 , the display panel is hollowed out at the second opening 312, that is, no color resist 40 is provided at the second opening 312. In other embodiments, a color resist 40 may also be provided in the second opening 312, and the present invention is not limited thereto.

[0068] For example, refer to Figure 11 The number of first openings 311 per unit area in the first display area 101 is equal to the sum of the number of first openings 311 and second openings 312 per unit area in the second display area 102. This arrangement has the advantage of providing second openings 312 at all vacant sub-pixel locations in the second display area 102, resulting in a uniform distribution of openings 310 in the second display area 102 and a more uniform overall reflection of ambient light by the second display area 102.

[0069] Figure 13 A partial structural top view of another display panel provided by an embodiment of the present invention, Figure 14 For the Figure 13 DD' cross-sectional structure diagram, refer to Figure 13 and Figure 14The plurality of thin film transistors 60 further includes a second thin film transistor 602, which is located in the second display area 102 and electrically connected to the sub-pixels 20 in the second display area 102. At least a portion of the second thin film transistor 602 is located in the region where the gaps between the sub-pixels 20 are located. The plurality of openings 310 includes a first opening 311 and a second opening 312. The vertical projection of the sub-pixels 20 on the substrate 10 is located within the vertical projection of the first opening 311 on the substrate 10. The second thin film transistor 602 located in the region where the gaps between the sub-pixels 20 are located is located within at least a portion of the second opening 312 on the substrate 10. In an embodiment of the present invention, in addition to the first opening 311 exposing the sub-pixel 20 (specifically, the display sub-pixel 201) in the second display area 102, a second opening 312 is also provided. At least a portion of the second opening 312 exposes the second thin-film transistor 602. Compared with covering all areas outside the first opening 311 with the black matrix 30, the coverage area of ​​the black matrix 30 is relatively reduced to balance the reflectivity of the first display area 101, the second display area 102 and the light-sensing element setting area 103.

[0070] For example, refer to Figure 13 and Figure 14 , the second openings 312 are arranged at some of the vacant sub-pixel positions in the second display area 102. Along the first direction X, the distances between any two adjacent second openings 312 arranged in a row are equal, and the distances between any two adjacent second thin-film transistors 602 arranged in a row are equal. The second openings 312 and the second thin-film transistors 602 in the second openings 312 are arranged to be evenly distributed, and the second display area 102 is more uniform in its overall reflection of the external ambient light. In other embodiments, the second openings 312 can also be arranged at all the vacant sub-pixel positions in the second display area 102, that is, the number of first openings 311 per unit area in the first display area 101 is equal to the sum of the number of first openings 311 and second openings 312 per unit area in the second display area 102. The advantage of this arrangement is that second openings 312 are provided at all vacant sub-pixel positions in the second display area 102 , so that the openings 310 in the second display area 102 are evenly distributed, and the second display area 102 reflects ambient light more evenly overall.

[0071] Figure 15 A partial structural top view of another display panel provided by an embodiment of the present invention, Figure 16 For the Figure 15 EE' cross-sectional structure diagram, refer to Figure 15 and Figure 16The display panel further includes a plurality of thin film transistors 60, including a first thin film transistor 601. The first thin film transistor 601 is located in the light sensing element setting area 103. The first thin film transistor 601 is located between the sub-pixel 20 in the light sensing element setting area 103 and the base substrate 10, and is electrically connected to the sub-pixel 20 in the light sensing element setting area 103. The vertical projection of the first thin film transistor 601 on the base substrate 10 is located within the joint projection of the sub-pixel 20 and the black matrix 30 on the base substrate 10. In the embodiment of the present invention, the first thin film transistor 601 for driving the sub-pixel 20 in the light sensing element setting area 103 is disposed within the light sensing element setting area 103. The distance between the sub-pixel 20 and the first thin film transistor 601 is relatively close, which helps to simplify the electrical connection wiring between the sub-pixel 20 and the first thin film transistor 601. In the light sensing element setting area 103 , the first thin film transistor 601 is covered by the sub-pixel 20 and the black matrix 30 , so that the black matrix 30 can prevent the first thin film transistor 601 from reflecting external ambient light, thereby reducing the overall reflectivity of the display area 100 .

[0072] Optionally, refer to Figure 15 , in the light sensing element setting area 103, the outer edge of the black matrix 30 includes a curve. It can be understood that if the outer edge of the black matrix 30 is a straight line, the light energy is distributed on both sides of the straight line, forming a plurality of light and dark stripes parallel to the extension direction of the straight line. If the outer edge of the black matrix 30 is an arc, the arc is equivalent to being composed of multiple straight lines extending in different directions, so the light energy is distributed in multiple different directions, thereby weakening the diffraction phenomenon. In the embodiment of the present invention, the outer edge of the black matrix 30 includes a curve, thereby reducing the diffraction phenomenon in the light sensing element setting area 103.

[0073] For example, refer to Figure 15 The outer edge of the black matrix 30 is in the shape of a circle or an ellipse. In other embodiments, the outer edge of the black matrix 30 may be in the shape of other curves, which is not limited in the present invention.

[0074] It should be noted that the above embodiments can be combined with each other. The present invention provides some examples for this purpose, but is not limited thereto.

[0075] Figure 17 A partial structural top view of another display panel provided by an embodiment of the present invention, Figure 18 For the Figure 17 Schematic diagram of the cross-sectional structure of FF', refer to Figure 17 and Figure 18The plurality of openings 310 include a first opening 311 and a second opening 312. The plurality of sub-pixels 20 include a display sub-pixel 201 and a dummy sub-pixel 202. The display sub-pixel 201 is located within the vertical projection of the first opening 311 on the substrate 10, and the first opening 311 exposes the display sub-pixel 201. The first portion of the second opening 312 is located in the area where the gap between the sub-pixels 20 is located, and the first portion of the second opening 312 does not overlap with the thin film transistor 60. The dummy sub-pixel 202 is located within the vertical projection of the second opening 312 on the substrate 10, and the second portion of the second opening 312 exposes the dummy sub-pixel 202.

[0076] Figure 19 A schematic cross-sectional view of another display panel provided by an embodiment of the present invention, referring to Figure 19 The black matrix 30 includes a first black matrix 31 located in the first display area 101, a second black matrix 32 located in the second display area 102, and a third black matrix 33 located in the photosensitive element setting area 103. The thickness of the second black matrix 32 is less than the thickness of the third black matrix 33, and the thickness of the third black matrix 33 is less than the thickness of the first black matrix 31. The multiple openings 310 include a first opening 311 and a second opening 312, and the display sub-pixel 201 is located in the vertical projection of the first opening 311 on the substrate 10, and the first opening 311 exposes the display sub-pixel 201. The dummy sub-pixel 202 is located in the vertical projection of the substrate 10, and at least a portion of the second opening 312 is located in the vertical projection of the substrate 10, and at least a portion of the second opening 312 exposes the dummy sub-pixel 202. It should be noted that in other embodiments, Figure 19 On the basis of the embodiment shown in , the first distance D1 in the second display area 102 is further set to be greater than the first distance D1 in the light sensing element setting area 103, and the first distance D1 in the light sensing element setting area 103 is greater than the first distance D1 in the first display area 101; and / or the second distance D2 in the second display area 102 is greater than the second distance D2 in the light sensing element setting area 103, and the second distance D2 in the light sensing element setting area 103 is greater than the second distance D2 in the first display area 101. By setting the distance between the edge of the opening 310 and the edge of the sub-pixel 20, and the thickness of the black matrix 30.

[0077] An embodiment of the present invention further provides a display device. Figure 20 A schematic diagram of a display device according to an embodiment of the present invention is provided. Figure 20 The display device includes any display panel 410 provided by the embodiment of the present invention. Figure 20The direction of the middle arrow represents the light-emitting display direction of the display panel 410. The display device can be a mobile phone, a tablet computer, a smart wearable device, etc.

[0078] For example, refer to Figure 20 The display device also includes a light-sensing element 420, which is located in the light-sensing element setting area 103. The external ambient light passes through the light-sensing element setting area 103 of the display panel 410 and reaches the light-sensing element 420 located on the backlight side of the display panel 410, thereby achieving specific optical performance, such as realizing functions such as camera.

[0079] Note that the above are only preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will appreciate that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, combinations, and substitutions are possible for those skilled in the art without departing from the scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include many other equivalent embodiments without departing from the scope of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A display panel, characterized in that: include: A display area, the display area including a first display area and a light sensing element setting area, the first display area at least partially surrounding the light sensing element setting area; substrate; A plurality of sub-pixels are located in the display area on one side of the base substrate; A plurality of color resists and a black matrix are located on a side of the plurality of sub-pixels away from the base substrate, the black matrix surrounds an opening, the vertical projection of the sub-pixels on the base substrate is located within at least a portion of the vertical projection of the opening on the base substrate, and the vertical projection of the color resist on the base substrate overlaps with at least a portion of the vertical projection of the opening on the base substrate; The display area further includes a second display area, the first display area at least partially surrounds the second display area, and the second display area surrounds the light sensing element setting area; in, The multiple openings include a first opening and a second opening, the sub-pixel is located within the vertical projection of the first opening on the substrate, the second opening is located in the second display area, and at least part of the second opening is located in the area where the gaps between the sub-pixels are located.

2. The display panel according to claim 1, wherein: The area of ​​the black matrix per unit area in the second display area is greater than or equal to the area of ​​the black matrix per unit area in the first display area.

3. The display panel according to claim 2, wherein: The black matrix in the second display area covers the entire area outside the opening.

4. The display panel according to claim 2, wherein: The black matrix includes a first black matrix located in the first display area, a second black matrix located in the second display area, and a third black matrix located in the light sensing element setting area; The thickness of the second black matrix is ​​smaller than that of the third black matrix, and the thickness of the third black matrix is ​​smaller than that of the first black matrix.

5. The display panel according to claim 4, wherein: Along the direction from the first display area to the light sensing element setting area, the thickness of the second black matrix gradually increases.

6. The display panel according to claim 2, wherein: The plurality of sub-pixels are arranged in an array along a first direction and a second direction, wherein the first direction intersects the second direction; Along the first direction, a distance between a vertical projection of an edge of the opening on the substrate and a vertical projection of the sub-pixel exposed by the opening on the substrate is a first distance; Along the second direction, a distance between a vertical projection of the edge of the opening on the substrate and a vertical projection of the sub-pixel exposed by the opening on the substrate is a second distance; The first distance in the second display area is greater than the first distance in the light-sensing element setting area, and the first distance in the light-sensing element setting area is greater than the first distance in the first display area; and / or, the second distance in the second display area is greater than the second distance in the light-sensing element setting area, and the second distance in the light-sensing element setting area is greater than the second distance in the first display area.

7. The display panel according to claim 2, wherein: The plurality of sub-pixels include display sub-pixels and dummy sub-pixels; the first display area includes the display sub-pixels, and the second display area includes the display sub-pixels and the dummy sub-pixels; The number of the display sub-pixels per unit area in the second display area is smaller than the number of the display sub-pixels per unit area in the first display area; The plurality of openings include a first opening and a second opening, the vertical projection of the display sub-pixel on the base substrate is located within the vertical projection of the first opening on the base substrate, and the vertical projection of the dummy sub-pixel on the base substrate is located within at least a portion of the vertical projection of the second opening on the base substrate.

8. The display panel according to claim 7, wherein: An area of ​​the first opening projected vertically on the base substrate is larger than an area of ​​the second opening projected vertically on the base substrate.

9. The display panel according to claim 7, wherein: The sub-pixel includes a first electrode, an organic light-emitting functional layer and a second electrode, wherein the organic light-emitting functional layer is located between the first electrode and the second electrode; The display panel further includes a pixel defining layer, the pixel defining layer being located between the first electrode and the second electrode, the pixel defining layer including a plurality of through holes, wherein a vertical projection of the through holes on the base substrate is located within a vertical projection of the first opening on the base substrate; In the display sub-pixel, the organic light-emitting functional layer is located in the through hole and contacts the first electrode; In the dummy sub-pixel, the pixel defining layer is located between the first electrode and the organic light-emitting functional layer.

10. The display panel according to claim 9, wherein: The display panel further includes a plurality of thin film transistors, wherein the thin film transistors are electrically connected to the first electrode; The multiple sub-pixels are arranged in an array along a first direction and a second direction, the first direction intersects the second direction, and the number of the thin film transistors arranged in a row along the first direction in the first display area is equal to the number of the thin film transistors arranged in a row along the first direction in the second display area.

11. The display panel according to claim 2, wherein: Also included are a plurality of thin film transistors; The plurality of thin film transistors include a first thin film transistor, which is located in the second display area. The first thin film transistor is located between the black matrix and the base substrate and is electrically connected to the sub-pixel in the photosensitive element setting area.

12. The display panel according to claim 11, wherein: The plurality of thin film transistors further include a second thin film transistor and a third thin film transistor; The second thin film transistor is located in the second display area and is electrically connected to the sub-pixel in the second display area; The third thin film transistor is located in the first display area, between the sub-pixel in the first display area and the base substrate, and is electrically connected to the sub-pixel in the first display area; The vertical projection areas of the first thin film transistor and the second thin film transistor on the base substrate are both smaller than the vertical projection area of ​​the third thin film transistor on the base substrate.

13. The display panel according to claim 11, wherein: The plurality of thin film transistors further include a second thin film transistor, the second thin film transistor being located in the second display area and electrically connected to the sub-pixels in the second display area, and at least part of the second thin film transistor being located in a region where gaps between the sub-pixels are located; The multiple openings include a first opening and a second opening, the sub-pixels are located within the vertical projection of the first opening on the substrate, and the second thin film transistors located in the area where the gaps between the sub-pixels are located are located within the vertical projection of the substrate on the substrate, at least part of the second opening is located within the vertical projection of the substrate.

14. The display panel according to claim 11, wherein: The edge of the sub-pixel is projected on the base substrate as a first figure, and in the light sensing element setting area, the edge of the opening is vertically projected on the base substrate as a second figure, and the shape of the second figure is consistent with the shape of the first figure.

15. The display panel according to claim 1, wherein: Also included are a plurality of thin film transistors; The plurality of thin film transistors include a first thin film transistor, the first thin film transistor being located in the light sensing element setting area, being located between the sub-pixel in the light sensing element setting area and the base substrate, and being electrically connected to the sub-pixel in the light sensing element setting area; A vertical projection of the first thin film transistor on the base substrate is located within a joint projection of the sub-pixel and the black matrix on the base substrate.

16. The display panel according to claim 15, wherein: In the light sensing element setting area, the outer edge of the black matrix includes a curve.

17. A display device, characterized in that: The display panel comprises the display panel according to any one of claims 1 to 16.

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