Display panel and display device

Abstract

A display panel and a display device. The display panel includes a display area, a photoelectric sensing area, a plurality of spacers, a plurality of first support pillars, a plurality of second support pillars, and a plurality of third support pillars. The display area is located outside the photoelectric sensing area; the photoelectric sensing area includes a light-transmitting area and a border area surrounding the light-transmitting area, and the border area includes a first area, a second area, and a third area. The first area surrounds the light-transmitting area; the second area is located on a side of the first area away from the light-transmitting area and surrounds the first area; the third area is located on a side of the second area away from the light-transmitting area and is located between the second area and the display area to separate the second area from the display area; the plurality of spacers are arranged in an array and are located in the display area but not in the light-transmitting area; the plurality of first support pillars are located in the first area, arranged around the light-transmitting area and spaced apart from each other; the plurality of second support pillars are located in the second area, arranged around the second area and spaced apart from each other; the plurality of third support pillars are located in the third area and are arranged in an array.

Description

Technical Field

[0001] At least one embodiment of the present disclosure relates to a display panel and a display device. Background Art

[0002] Generally, a display device (such as a mobile phone, a tablet computer, etc.) has a photoelectric sensing device, such as a camera device and a fingerprint recognition device. The camera device is usually disposed on one side outside the display area of the display screen. However, since the installation of the camera device requires a certain position, it is not conducive to the full-screen and narrow-border design of the display screen. For example, the camera device can be combined with the display area of the display screen, and a position is reserved for the camera device (such as a front camera device) in the display area to maximize the display area of the display screen. To ensure the signal strength received by the device, the position reserved for the camera device needs to have a high transmittance. To ensure the imaging effect of the camera device, the position reserved for the camera device also needs to have good uniformity. Summary of the Invention

[0003] At least one embodiment of the present disclosure provides a display panel, which includes: a display area, a photoelectric sensing area, a plurality of spacers, a plurality of first support pillars, a plurality of second support pillars, and a plurality of third support pillars. The display area is located outside the photoelectric sensing area. The display area includes a plurality of pixels arranged in an array, and each pixel of the plurality of pixels includes a plurality of color sub-pixels. The photoelectric sensing area includes a light-transmitting area and a border area surrounding the light-transmitting area. The border area includes: a first area, a second area, and a third area. The first area surrounds the light-transmitting area. The second area is located on a side of the first area away from the light-transmitting area and surrounds the first area. The third area is located on a side of the second area away from the light-transmitting area and is located between the second area and the display area to separate the second area from the display area. The plurality of spacers are arranged in an array and are located in the display area but not in the light-transmitting area. The plurality of first support pillars are located in the first area, arranged around the light-transmitting area and spaced apart from each other. The plurality of second support pillars are located in the second area, arranged around the second area and spaced apart from each other. The plurality of third support pillars are located in the third area and are arranged in an array.

[0004] For example, an embodiment of the present disclosure provides a display panel further including: a first substrate, a second substrate, a black matrix, and a protective layer. The second substrate faces the first substrate; the black matrix is located on a side of the second substrate close to the first substrate, covering the border area, and defining the plurality of color sub-pixels in the display area, and the positive projections of the plurality of spacers, the plurality of first support pillars, the plurality of second support pillars, and the plurality of third support pillars on the first substrate are located within the positive projection of the black matrix on the first substrate; the protective layer is located on the second substrate and on a side of the black matrix close to the first substrate, covering the border area and the display area, wherein the plurality of spacers, the plurality of first support pillars, the plurality of second support pillars, and the plurality of third support pillars are located between the first substrate and the protective layer to maintain the distance between the first substrate and the second substrate.

[0005] For example, an embodiment of the present disclosure provides a display panel further including a first spacer layer, which is located in the second region and between the black matrix and the protective layer, and the positive projections of the plurality of second support pillars on the first substrate are located within the positive projection of the first spacer layer on the first substrate.

[0006] For example, in a display panel provided by an embodiment of the present disclosure, the planar arrangement pattern of the first spacer layer is a closed ring surrounding the first region.

[0007] For example, in a display panel provided by an embodiment of the present disclosure, in the first region, the protective layer is in direct contact with the black matrix; the protective layer has a stepped structure in the first region, and the stepped structure includes a first part away from the second region and a second part close to the second region; in a direction perpendicular to the first substrate, the height of the first part is less than the height of the second part, and the height of the first support pillar is greater than the height of the second support pillar.

[0008] For example, in a display panel provided by an embodiment of the present disclosure, the planar arrangement pattern of the plurality of first support pillars includes at least one ring.

[0009] For example, in a display panel provided by an embodiment of the present disclosure, the planar arrangement pattern of the plurality of first support pillars includes a plurality of concentric rings; along the radial direction of the concentric rings, the first support pillars in the plurality of concentric rings are aligned or the first support pillars in adjacent concentric rings among the plurality of concentric rings are staggered.

[0010] For example, in a display panel provided by an embodiment of the present disclosure, the ratio of the total area of the positive projections of the plurality of first support pillars on the first substrate to the total area of the positive projections of the plurality of second support pillars on the first substrate is 5 to 10.

[0011] For example, in a display panel provided in an embodiment of the present disclosure, the distance between the centers of two adjacent first support pillars among the multiple first support pillars located in the same concentric ring is equal to the length or width of a pixel in the display area.

[0012] For example, a display panel provided in an embodiment of the present disclosure further includes a second spacer layer, which is located in the third region and between the black matrix and the protective layer, and the orthographic projections of the multiple third support pillars on the first substrate are located within the orthographic projection of the second spacer layer on the first substrate.

[0013] For example, in a display panel provided in an embodiment of the present disclosure, the first spacer layer and the second spacer layer are integrally formed or spaced apart from each other through the protective layer.

[0014] For example, a display panel provided in an embodiment of the present disclosure includes a color filter layer, the color filter layer is located on the side of the second substrate close to the first substrate and includes a first part, a second part, and a third part; the first part of the color filter layer is located in the multiple color sub-pixels in the display area, and the orthographic projection of the first part of the color filter layer on the first substrate does not overlap with the orthographic projection of the black matrix on the first substrate; the second part of the color filter layer is located in the second region and configured as the first spacer layer, and the orthographic projection of the second part of the color filter layer on the first substrate overlaps with the orthographic projection of the black matrix on the first substrate; the third part of the color filter layer is located in the third region and configured as the second spacer layer.

[0015] For example, in a display panel provided in an embodiment of the present disclosure, the multiple spacers located in the display area include multiple main spacers and multiple sub-spacers, the height of the main spacers in the direction perpendicular to the first substrate is greater than the height of the sub-spacers in the direction perpendicular to the first substrate; the shape and size of each of the multiple second support pillars, the shape and size of each of the multiple third support pillars are the same as the shape and size of each of the multiple sub-spacers; the shape and size of each of the multiple first support pillars are the same as the shape and size of each of the multiple main spacers.

[0016] For example, an embodiment of the present disclosure provides a display panel further including: a buffer layer and a driving circuit layer. The buffer layer is located on a side of the first substrate close to the second substrate and is in direct contact with the first substrate; the driving circuit layer is located on a side of the buffer layer away from the first substrate and is located in the display area and the border area. Among them, the plurality of spacers, the plurality of first support pillars, the plurality of second support pillars, and the plurality of third support pillars are all located between the driving circuit layer and the protective layer. No driving circuit layer is provided in the light-transmitting area, and an edge of the driving circuit layer close to the light-transmitting area is located in the first area or at the junction of the light-transmitting area and the first area.

[0017] For example, in a display panel provided by an embodiment of the present disclosure, in the light-transmitting area, a first liquid crystal layer is provided between the buffer layer and the second substrate, and the first liquid crystal layer is in direct contact with the buffer layer.

[0018] For example, in a display panel provided by an embodiment of the present disclosure, in the border area and the display area, a second liquid crystal layer is provided between the protective layer and the driving circuit layer, and the liquid crystals in the first liquid crystal layer communicate with the liquid crystals in the second liquid crystal layer through the intervals between the plurality of first support pillars, the intervals between the plurality of second support pillars, and the intervals between the plurality of third support pillars.

[0019] For example, in a display panel provided by an embodiment of the present disclosure, the protective layer further covers the light-transmitting area; in the light-transmitting area, the protective layer is in direct contact with the second substrate, and the first liquid crystal layer is located between the buffer layer and the protective layer and is in direct contact with the protective layer.

[0020] For example, in a display panel provided by an embodiment of the present disclosure, no liquid crystal layer is provided in the light-transmitting area; in the light-transmitting area, air is filled between the second substrate and the buffer layer; the display panel includes a first sealant, and the first sealant is located between the second substrate and the buffer layer, surrounds the light-transmitting area, and is in direct contact with the buffer layer and the protective layer.

[0021] For example, an embodiment of the present disclosure provides a display panel including a plurality of the light-transmitting regions, and two adjacent light-transmitting regions are respectively a first light-transmitting region and a second light-transmitting region; the display panel further includes: an intermediate region, a third spacer layer, a plurality of fourth support columns, and a plurality of fifth support columns. The intermediate region is located between a second region surrounding the first light-transmitting region and a second region surrounding the second light-transmitting region; the third spacer layer is on the same layer as and connected to the first spacer layer, and includes a first part and a second part, wherein the first part and the second part face each other, and the intermediate region is located between the first part and the second part; a plurality of fourth support columns are arranged along the first part and spaced apart from each other, wherein the orthographic projection of the plurality of fourth support columns on the first substrate is located within the orthographic projection of the first part on the first substrate; a plurality of fifth support columns are arranged along the second part and spaced apart from each other, wherein the orthographic projection of the plurality of fifth support columns on the first substrate is located within the orthographic projection of the second part on the first substrate, and in a direction perpendicular to the first substrate, the plurality of fourth support columns, the plurality of fifth support columns and the plurality of second support columns are arranged on the same layer, and the shape and size of each of the plurality of fourth support columns, the shape and size of each of the plurality of fifth support columns are the same as the shape and size of each of the plurality of second support columns.

[0022] For example, an embodiment of the present disclosure provides a display panel further including a plurality of sixth support columns and a plurality of seventh support columns. The plurality of sixth support columns are located on a side of the first part close to the intermediate region, arranged along the first part and spaced apart from each other; the plurality of seventh support columns are located on a side of the second part close to the intermediate region, arranged along the second part and spaced apart from each other; in a direction perpendicular to the first substrate, the plurality of sixth support columns, the plurality of seventh support columns and the plurality of first support columns are arranged on the same layer, and the shape and size of each of the plurality of sixth support columns, the shape and size of each of the plurality of seventh support columns are the same as the shape and size of each of the plurality of first support columns.

[0023] For example, in a display panel provided by an embodiment of the present disclosure, the planar shapes of the first part and the second part are both straight line segments and parallel to each other.

[0024] For example, in a display panel provided by an embodiment of the present disclosure, the black matrix covers the intermediate region, and the structure within the intermediate region is the same as the structure within the third region.

[0025] For example, in a display panel provided in an embodiment of the present disclosure, the middle region is a middle display area, the middle display area includes a plurality of middle pixels arranged in an array, each of the plurality of middle pixels includes a plurality of color middle sub-pixels, the black matrix defines the plurality of color middle sub-pixels in the middle display area, and the light transmittance of the middle display area is less than or equal to the light transmittance of the display area.

[0026] For example, in a display panel provided in an embodiment of the present disclosure, the protective layer also covers the middle display area; the thickness of the part of the protective layer covering the middle display area in the direction perpendicular to the first substrate is greater than the thickness of the part of the protective layer covering the display area in the direction perpendicular to the first substrate.

[0027] For example, a display panel provided in an embodiment of the present disclosure further includes a plurality of middle spacers, which are located in the middle display area and arranged in an array; the structures of the plurality of middle spacers are the same as the structures of the plurality of spacers in the display area.

[0028] For example, a display panel provided in an embodiment of the present disclosure further includes a plurality of middle spacers. The plurality of middle spacers are located in the middle display area and arranged in an array; the arrangement density of the plurality of middle spacers in the middle display area is less than the arrangement density of the plurality of spacers in the display area.

[0029] For example, in a display panel provided in an embodiment of the present disclosure, the photo-sensing area includes at least three light-transmitting areas and an auxiliary function area, the at least three light-transmitting areas and the auxiliary function area are arranged in a 2×2 matrix, the interval between the first row and the second row of the 2×2 matrix and the interval between the first column and the second column of the 2×2 matrix form a cross-shaped area, and the structure within the cross-shaped area is the same as the structure within the middle region.

[0030] For example, in a display panel provided in an embodiment of the present disclosure, the display panel is a liquid crystal display panel, the first substrate is an array substrate, and the second substrate is a color filter substrate; alternatively, the display panel is an organic light-emitting diode (OLED) display panel, the first substrate is an array substrate, and the second substrate is a packaging cover plate.

[0031] An embodiment of the present disclosure provides a display device, which includes any display panel provided in the embodiments of the present disclosure.

[0032] For example, in a display device provided in an embodiment of the present disclosure, the side of the second substrate away from the first substrate is the display side; the display device further includes a photo-sensor device. The photo-sensor device is located in the light-transmitting area and on the side of the first substrate away from the second substrate, and is configured to receive light from the display side. Brief Description of the Drawings

[0033] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present invention and do not limit the present invention.

[0034] Figure 1A A schematic overall plan view of a display panel provided in an embodiment of the present disclosure;

[0035] Figure 1B Another schematic overall plan view of a display panel provided in an embodiment of the present disclosure;

[0036] Figure 1C Another schematic overall plan view of a display panel provided in an embodiment of the present disclosure;

[0037] Figure 2A For Figure 1A An enlarged schematic view of the optoelectronic sensing region and its surrounding area in

[0038] Figure 2B For Figure 1A Another enlarged schematic view of the optoelectronic sensing region and its surrounding area in

[0039] Figure 3A A schematic cross-sectional view along the A-A' line in Figure 2A ;

[0040] Figure 3B A schematic cross-sectional view along the first direction of a part of the display panel including a driving circuit layer provided in an embodiment of the present disclosure;

[0041] Figure 3C For Figure 3B A schematic cross-sectional view along the second direction of a part of the driving circuit layer shown in

[0042] Figure 3D A cross-sectional view along the Figure 2A Another A-A' line in

[0043] Figure 4 A cross-sectional view along the Figure 2A Another A-A' line in

[0044] Figure 5 A cross-sectional view along the Figure 2A Another A-A' line in

[0045] Figure 6A Another schematic overall plan view of a display panel provided in an embodiment of the present disclosure;

[0046] Figure 6B Another overall plan view of a display panel provided by an embodiment of the present disclosure;

[0047] Figure 6C Another overall plan view of a display panel provided by an embodiment of the present disclosure;

[0048] Figure 6D Another overall plan view of a display panel provided by an embodiment of the present disclosure;

[0049] Figure 7A is Figure 6A An enlarged view of the optoelectronic sensing region and its surrounding area in

[0050] Figure 7B is a cross-sectional view along the Figure 7A line B-B' in

[0051] Figure 8A is Figure 6A Another enlarged view of the optoelectronic sensing region and its surrounding area in

[0052] Figure 8B is a cross-sectional view along the Figure 8A line C-C' in

[0053] Figure 9 A schematic diagram of a manufacturing method of a display panel provided by an embodiment of the present disclosure;

[0054] Figure 10 A schematic diagram of a display device provided by an embodiment of the present disclosure. Detailed implementation manners

[0055] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0056] Unless otherwise defined, the technical terms or scientific terms used herein shall have the ordinary meanings as understood by those of ordinary skill in the art to which this invention pertains. The terms "first", "second" and similar terms used in the specification and claims of this patent application do not denote any order, quantity or importance, but are only used to distinguish different components. The terms such as "comprising" or "including" mean that the elements or items appearing before this term cover the elements or items listed after this term and their equivalents, without excluding other elements or items. The terms such as "inside", "outside", "above", "below", etc. are only used to indicate relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationships may also change accordingly.

[0057] The drawings in this disclosure are not strictly drawn to actual scale, and the number of various support columns is not limited to the number shown in the figures. The specific dimensions and quantities of each structure can be determined according to actual needs. The drawings described in this disclosure are only schematic diagrams of the structures.

[0058] In a display panel having an optoelectronic sensing device such as a camera device or a fingerprint recognition device, such as a liquid crystal display panel, spacers located between the array substrate and the color filter substrate can usually be provided in the area where the camera device is not provided to maintain the cell thickness and the structural stability of this area, thereby improving the uniformity of this area during use, which is beneficial to ensuring a better imaging effect of the camera device. However, such spacers will block light from passing through this area to reach the optoelectronic sensor device, resulting in a lower light transmittance in the area where the camera device is provided. Usually, a driving circuit, such as a pixel circuit, including signal lines, thin film transistors, storage capacitors, etc. is also provided in the area where the camera device is provided.

[0059] At least one embodiment of the present disclosure provides a display panel, which includes a display area, a photoelectric sensing area, a plurality of spacers, a plurality of first support pillars, a plurality of second support pillars, and a plurality of third support pillars. The display area is located outside the photoelectric sensing area. The display area includes a plurality of pixels arranged in an array, and each pixel of the plurality of pixels includes a plurality of color sub-pixels. The photoelectric sensing area includes a light-transmitting area and a border area surrounding the light-transmitting area. The border area includes a first area, a second area, and a third area. The first area surrounds the light-transmitting area. The second area is located on a side of the first area away from the light-transmitting area and surrounds the first area. The third area is located on a side of the second area away from the light-transmitting area and is located between the second area and the display area to separate the second area from the display area. The plurality of spacers are arranged in an array and are located in the display area but not in the light-transmitting area. The plurality of first support pillars are located in the first area, arranged around the light-transmitting area and spaced apart from each other. The plurality of second support pillars are located in the second area, arranged around the second area and spaced apart from each other. The plurality of third support pillars are located in the third area and are arranged in an array.

[0060] It should be noted that in the present disclosure, Figure 3A , Figure 3D , Figure 4 and Figure 5 the numbers of the first support pillar 41, the second support pillar 42, and the third support pillar 43 in Figure 2A and Figure 2B are not exactly corresponding to those in Figure 2A and Figure 2B . These drawings of the present disclosure are only schematic diagrams to express the structural relationships between the various structures to be described.

[0061] Exemplarily, Figure 1A is an overall plan view of a display panel provided by an embodiment of the present disclosure. Figure 2A is Figure 1A an enlarged view of the photoelectric sensing area and its peripheral area in Figure 3A is a cross-sectional view along the line A-A in Figure 2A . As shown in Figure 1A , the display panel includes a display area 3 and a photoelectric sensing area 20. The display area 3 is located outside the photoelectric sensing area 20. For example, the display area 3 surrounds at least part of the photoelectric sensing area 20. For example, inFigure 1A In the illustrated embodiment, the display area 3 surrounds the entire photoelectric sensing area 20. In other embodiments, the display area 3 may also surround a part of the photoelectric sensing area 20. For example, as Figure 1B shown, the photoelectric sensing area 20 is located at the top corner position of the display panel, and the display area 3 also surrounds a part of the photoelectric sensing area 20; or for another example Figure 1C shown, the photoelectric sensing area 20 is located at the edge of the display panel and at the middle position of one side of the outer contour of the display panel. One end of the photoelectric sensing area 20 close to this side is connected to the non-display area near this side, and the display area 3 surrounds the other parts of the photoelectric sensing area 20 except the end in contact with the non-display area. Figure 1A - 1C The situations shown are only exemplary, and the specific positional relationship between the display area 3 and the photoelectric sensing area 20 is not limited to Figure 1A - 1C the situations shown, as long as it satisfies that the display area 3 surrounds at least part of the photoelectric sensing area 20.

[0062] Combined with Figure 2A and Figure 3A, the display panel includes: a plurality of spacers 40, a plurality of first support pillars 41, a plurality of second support pillars 42, and a plurality of third support pillars 43. The display area 3 is located outside the optoelectronic sensing area 20. The display area 3 includes a plurality of pixels 8 arranged in an array. Each pixel in the plurality of pixels 8 includes a plurality of color sub-pixels, for example, including a first sub-pixel 81, a second sub-pixel 82, and a third sub-pixel 83. For example, the first sub-pixel 81, the second sub-pixel 82, and the third sub-pixel 83 respectively transmit red light, blue light, and green light. The optoelectronic sensing area 20 includes a light-transmitting area 1 and a border area 2 surrounding the light-transmitting area 1. The border area includes: a first area 21, a second area 22, and a third area 23. The first area 21 surrounds the light-transmitting area 1; the second area 22 is located on the side of the first area 21 away from the light-transmitting area 1, that is, the second area 22 is located outside the light-transmitting area 1 and surrounds the first area 21; the third area 23 is located on the side of the second area 22 away from the light-transmitting area 1 and is located between the second area 22 and the display area 3 to separate the second area 22 from the display area 3; the plurality of spacers 40 are arranged in an array, and the plurality of spacers 40 are located in the display area 3 but not in the light-transmitting area 1; the plurality of first support pillars 41 are located in the first area 21, arranged around the light-transmitting area 1 and spaced apart from each other; the plurality of second support pillars 42 are located in the second area 22, arranged around the second area 22 and spaced apart from each other; the plurality of third support pillars 43 are located in the third area 23 and arranged in an array. In this display panel, since the plurality of spacers 40 are located in the display area 3 but not in the light-transmitting area 1, therefore, the light transmittance of the light-transmitting area 1 is significantly improved. Although there is no support of spacers inside the light-transmitting area 1, however, the plurality of first support pillars 41 and second support pillars 42 spaced apart from each other in the border area 2 can maintain the stability of the periphery of the light-transmitting area 1, thereby maintaining the stability of the space of the light-transmitting area 1, improving the regional stability of the light-transmitting area 1, and thus improving the light transmittance of the light-transmitting area 1 and the uniformity and stability of the color of the light transmitted from the light-transmitting area 1. And when liquid crystals are provided in the first area 21, the second area 22, and the third area 23, in this solution, the plurality of first support pillars 41 are spaced apart from each other and the plurality of second support pillars 42 are spaced apart from each other. Thus, the liquid crystals in the light-transmitting area 1 can flow through the intervals between the plurality of first support pillars 41 and the intervals between the plurality of second support pillars 42 to ensure the fluidity between the liquid crystals in the light-transmitting area 1 and the liquid crystals in other areas such as the first area 21 and the second area 22. When the ambient temperature changes, the volume of the liquid crystals will change, and the heights of the plurality of first support pillars 41 and the heights of the plurality of second support pillars 42 also change synchronously, so that the volume of the liquid crystals matches the cell thickness. And no support pillars are provided in the light-transmitting area 1. Therefore, maintaining the fluidity of the liquid crystals can avoid display abnormalities caused by the mismatch between the volume of the liquid crystals in the light-transmitting area 1 and the cell thickness.In addition, in the process of manufacturing the display panel, when the display panel is a liquid crystal display panel, in the step of injecting liquid crystal, since the area of the light-transmitting region 1 is very small relative to the liquid crystal droplets to which the liquid crystal is dropped, it is difficult to accurately drop the liquid crystal droplets directly into the light-transmitting region 1. Therefore, the liquid crystal droplets can be dropped in a larger region such as the display region 3, and the liquid crystal flows into the light-transmitting region 1 successively through the second region 22 and the first region 21 and through the intervals between the plurality of first support posts 41 and the intervals between the plurality of second support posts 42, so as to fill the liquid crystal in the light-transmitting region 1. If the plurality of first support posts 41 or the plurality of second support posts 42 are closed rings surrounding the entire light-transmitting region 1, the above technical effects cannot be achieved. In addition, in the third region 23, the plurality of third support posts 43 are also spaced apart from each other; the third region 23 is located outside the first region 21 and the second region 22 (i.e., on the side away from the light-transmitting region) and surrounds at least part of the light-transmitting region 1. Therefore, the third region 23 is closer to the display region 3, for example, adjacent to the display region 3. A plurality of spacers are arranged in an array in the display region 3. Thus, arranging the plurality of third support posts 43 in an array in the third region 23 can make the structure of the third region 23 adjacent to the display region 3 tend to be the same as the structure of the display region 3, and the cell thickness is also consistent. Therefore, the third region 23 can be used as a transition region from the border region 2 to the display region 3, so that the structure of the edge region of the display region 3 close to the border region 2 is uniformly the same as the structure of the middle region of the display region 3, so as to obtain a uniform display effect within the entire display region 3. For example, the third region 23 is a dummy region to maintain the uniformity of the edge portion of the display region 3 adjacent to the optoelectronic sensing region 20.

[0063] For example, the arrangement density and array form of the plurality of third support posts 43 arranged in an array in the third region 23 are the same as the arrangement density and array form of the plurality of spacers arranged in an array in the display region 3. Thus, the structure of the third region 23 adjacent to the display region 3 tends to be the same as the structure of the display region 3, and the structure of the edge region of the display region 3 close to the border region 2 is uniformly the same as the structure of the middle region of the display region 3, which is more conducive to obtaining a uniform display effect within the entire display region 3. Of course, in other embodiments, the arrangement density and array form of the plurality of third support posts 43 arranged in an array in the third region 23 may also be different from the arrangement density and array form of the plurality of spacers arranged in an array in the display region 3.

[0064] For example, the side of the second substrate 102 away from the first substrate 101 is the display side. As Figure 3AAs shown, for example, a photoelectric sensor device 15 can be provided on the side of the first substrate 101 away from the second substrate 102. The photoelectric sensor device 15 is configured to receive light from the display side, that is, the light from the display side reaches the photoelectric sensor device 15 through the light-transmitting area. Thus, the structure in the light-transmitting area 1 will affect the light transmittance and the uniformity of the transmitted light color, thereby affecting the amount of light received by the photoelectric sensor device 15, the uniformity of the light brightness, and the color uniformity.

[0065] For example, the arrangement density of the first support columns 41 is greater than that of the second support columns 42, that is, the distance between two adjacent first support columns 41 is less than the distance between two adjacent second support columns 42, so as to provide more stable support in the first area 21 closer to the light-transmitting area 1.

[0066] For example, the arrangement density of the sub-spacers 402 in the display area 3 is 287 / 288, that is, there are 287 sub-spacers 402 corresponding to every 288 sub-pixels in the display area 3; the arrangement density of the main spacer 401 is 1 / 288, that is, there is 1 main spacer 401 corresponding to every 288 sub-pixels in the display area 3. For example, in the third area 23, the arrangement density of the third support columns 43 is the same as that of the sub-spacers 402, so that the arrangement of the support columns and the cell thickness in the third area 23 are respectively consistent with the arrangement of the spacers and the cell thickness in the display area 3.

[0067] For example, as Figure 3A shown, the display panel further includes: a first substrate 101, a second substrate 102, a black matrix 5, and a protective layer 6. The second substrate 102 is opposite to the first substrate 101; the black matrix 5 is located on the side of the second substrate 102 close to the first substrate 101, covering the border area 2 so that the border area 2 is light-impermeable, and the black matrix 5 defines the above-mentioned multiple color sub-pixels in the display area 1; the orthographic projections of the multiple spacers 40, the multiple first support columns 41, the multiple second support columns 42, and the multiple third support columns 43 on the first substrate 101 are located within the orthographic projection of the black matrix 5 on the first substrate 101, so as to avoid the multiple spacers 40 affecting the aperture ratio in the display area 3. The protective layer 6 is located on the second substrate 102 and on the side of the black matrix 5 close to the first substrate 101, covering the border area 2 and the display area 3 to protect the multiple sub-pixels and the black matrix on the second substrate 102 in the border area 2 and the display area 3. The multiple spacers 40, the multiple first support columns 41, the multiple second support columns 42, and the multiple third support columns 43 are located between the first substrate 101 and the protective layer 6 to maintain the cell thickness between the first substrate 101 and the second substrate 102.

[0068] For example, the display panel further includes a first spacer layer 71, which is located in the second region 22 and between the black matrix 5 and the protective layer 6. The orthographic projections of the plurality of second support columns 42 on the first substrate 101 are located within the orthographic projection of the first spacer layer 71 on the first substrate 101. To simplify the manufacturing process of the display panel, the second support columns 42, the third support columns 43, and the sub-spacers 402 in the display area 3 can be formed by performing a single patterning process on the same film layer using the same mask. Therefore, the height of the second support columns 42 in the direction perpendicular to the first substrate 101, the height of the third support columns 43 in the direction perpendicular to the first substrate 101, and the height of the sub-spacers 402 in the display area 3 are the same. In this case, the height h 2 is limited, and h 2 is superimposed on the thickness of the first spacer layer 71 in the direction perpendicular to the first substrate 101, so that each second support column 42 and the first spacer layer 71 jointly maintain the required distance between the first substrate 101 and the second substrate 102 in the second region 22. When the second support column 42 is deformed by force and its height changes, the first spacer layer 71 can assist in reducing the impact of such a change on maintaining the required distance between the first substrate 101 and the second substrate 102 in the second region 22. Of course, if the above-mentioned simplified manufacturing process is not considered, the second support column 42 can have an arbitrary height in the direction perpendicular to the first substrate 101 according to needs.

[0069] For example, as Figure 2A shown, the planar arrangement pattern of the first spacer layer 71 is a closed ring surrounding the first region 21, so as to maintain the stability of the periphery of the light-transmitting region 1 at various positions around the light-transmitting region 1, thereby improving the light transmittance of the light-transmitting region 1 and the uniformity and stability of the color of the light transmitted from the light-transmitting region 1.

[0070] For example, as Figure 3A shown, in the first region 21, the protective layer 6 is in direct contact with the black matrix 6, that is, no first spacer layer 71 or other structures with a height similar to that of the first spacer layer 71 are provided in the first region 21, and there is no other layer or structure between the protective layer 6 and the black matrix 6 in the direction perpendicular to the second substrate 102. Thus, the protective layer 6 has a stepped structure in the first region 21, and the stepped structure includes a first part 61 away from the second region 22 and a second part 62 close to the second region 22; in the direction perpendicular to the first substrate 101, the height H 1 of the first part 61 is less than the height H 2, the height of the first support post 41 is greater than the height of the second support post 42. Since the first spacer layer 71 is provided in the second region 22 that is farther from the light-transmitting region 1 and the first spacer layer 71 is not provided in the first region 21, this stepped structure is not located in the light-transmitting region 1 to avoid affecting the light-transmitting uniformity of the light-transmitting region 1. It should be noted that the height of the first part 61 refers to the distance from the surface of the first part 61 away from the second substrate 102 to the surface of the second substrate 102 facing the first substrate 101, and the height of the second part 62 refers to the distance from the surface of the second part 62 away from the second substrate 102 to the surface of the second substrate 102 facing the first substrate 101.

[0071] For example, the planar arrangement pattern of the plurality of first support posts 41 as a whole includes at least one ring. For example, as Figure 2A shown, the planar arrangement pattern of the plurality of first support posts 41 as a whole includes a plurality of concentric rings, for example, two concentric rings. The number of the first support posts 41 can be determined by comparing the size of the first support posts 41 and the area of the border region 2, so as to achieve a better support effect according to the design of display panels of different sizes, which will be specifically introduced below. For example, the shape of each concentric ring is the same as the planar shape of the light-transmitting region 1 surrounded by the concentric ring, which is beneficial to better maintaining the stability around the light-transmitting region 1 by the plurality of first support posts 41. For example, in this embodiment, the planar shape of the light-transmitting region 1 and the shape of each concentric ring are both circular; in other embodiments, when the planar shape of the light-transmitting region 1 is rectangular, the shape of each concentric ring is also rectangular; when the planar shape of the light-transmitting region 1 is oval, the shape of each concentric ring is also oval. The above-listed situations are only exemplary, and the planar shape of the light-transmitting region 1 and the shape of each concentric ring in the embodiments of the present disclosure are not limited.

[0072] For example, along the radial direction of the plurality of concentric rings, the first support posts 41 in the plurality of concentric rings are aligned. As Figure 2A shown, the first support post 411 in the first concentric ring close to the light-transmitting region 1 and the first support post 412 in the second concentric ring far from the light-transmitting region 1 are aligned along the radial direction; or, along the radial direction of the plurality of concentric rings, the first support posts 41 in adjacent concentric rings in the plurality of concentric rings are staggered. As Figure 2B shown, in Figure 2B , the first support post 411 in the first concentric ring close to the light-transmitting region 1 and the first support post 412 in the second concentric ring adjacent to the first concentric ring far from the light-transmitting region 1 are staggered, that is, they are not aligned along the radial direction, so as to achieve a better support effect. The support effects of the first support posts 41 on adjacent concentric rings are complementary in position, so as to achieve a uniform and consistent support effect at each position around the light-transmitting region 1 and better maintain the uniformity and stability of the light-transmitting region 1. Figure 2B Other features not mentioned in the embodiments shown are the same as Figure 2AFor the same in, please refer to the description of the embodiment shown in Figure 2A .

[0073] For example, the ratio of the total area of the orthographic projections of the plurality of first support columns 41 on the first substrate 101 to the total area of the orthographic projections of the plurality of second support columns 42 on the first substrate 101 is 5 to 10. Through experiments, a better support effect can be achieved in this way. For example, the ratio of the total area of the orthographic projections of the plurality of first support columns 41 on the first substrate 101 to the area of the border region 2 is 0.4% to 0.6%, and the ratio of the total area of the orthographic projections of the plurality of second support columns 42 on the first substrate 101 to the area of the border region 2 is 0.06% to 0.08%. Through experiments and calculations, a better support effect and a uniform and harmonious structural design can be achieved in this way. For example, when the planar shape of the border region 2 is a ring, the area S of the border region is calculated according to the formula for the area of a ring: S = π×(a 2 -b 2 ) / 4, where a is the diameter of the circle where the outer ring of the border region is located, and b is the diameter of the circle where the inner ring of the border region is located. When the planar shape of the border region 2 is other shapes, it can be calculated according to the actual situation.

[0074] For example, the distance between the centers of two adjacent first support columns 41 among the plurality of first support columns 41 located in the same concentric ring is equal to the length or width of a pixel in the display region 3. It should be noted that this pixel refers to a pixel unit including a plurality of sub-pixels (for example, including three sub-pixels of RGB). When the area of the border region 2 and the areas of one first support column 41 and one second support column 42 are determined, the numbers of the first support columns 41 and the second support columns 42 are determined according to the above ratio. After calculation, when the distance between the centers of two adjacent first support columns 41 among the plurality of first support columns 41 located in the same concentric ring is equal to the length or width of a pixel in the display region 3, the densities of the first support columns 41 and the second support columns 42 are appropriate, which is convenient for manufacturing and has a better support stability effect. For example, the sum of the length of one second support column 42 and the adjacent spacing of the second support column 42 is 100 μm to 200 μm.

[0075] For example, as Figure 3AAs shown, the display panel further includes a second spacer layer 72. The second spacer layer 72 is located in the third region 23 and between the black matrix 5 and the protective layer 6. The orthographic projection of the plurality of third support pillars 43 on the first substrate 101 is located within the orthographic projection of the second spacer layer 72 on the first substrate 101. In order to simplify the manufacturing process of the display panel, the second support pillar 42, the third support pillar 43, and the sub-spacer 402 in the display area 3 can be formed by performing a single patterning process on the same film layer using the same mask. Therefore, the height of the third support pillar 43 in the direction perpendicular to the first substrate 101, the height of the second support pillar 42 in the direction perpendicular to the first substrate 101, and the height of the sub-spacer 402 in the display area 3 are the same. In this case, the height h 3 is limited, and h 3 is superimposed on the thickness of the second spacer layer 72 in the direction perpendicular to the first substrate 101, so that each third support pillar 43 and the second spacer layer 72 together maintain the required distance between the first substrate 101 and the second substrate 102 in the third region 23. When the third support pillar 43 is deformed by force and its height changes, the second spacer layer 72 can assist in reducing the impact of this change on maintaining the required distance between the first substrate 101 and the second substrate 102 in the third region 23. Of course, if the above-mentioned simplified manufacturing process is not considered, the third support pillar 43 can have an arbitrary height in the direction perpendicular to the first substrate 101 according to needs.

[0076] For example, in Figure 3A the embodiment shown, the first spacer layer 71 and the second spacer layer 72 are spaced apart from each other by the protective layer 6, or, in another embodiment, as Figure 3D shown, the first spacer layer 71 and the second spacer layer 72 are integrally formed to simplify the structure of the display panel. And in this case, the first spacer layer 71 and the second spacer layer 72 can be formed by performing the same patterning process on the same film layer, which simplifies the manufacturing process.

[0077] For example, as Figure 3AAs shown, the display panel includes a color filter layer, which is located on the side of the second substrate 102 close to the first substrate 101 and includes a first part, a second part, and a third part. The part of the black matrix located in the display area 3 defines a plurality of color sub-pixels 81 / 82 / 83. The first part of the color filter layer is located in the plurality of color sub-pixels 81 / 82 / 83 in the display area 3 and serves as the color filter layer of the plurality of color sub-pixels 81 / 82 / 83. The second part of the color filter layer is located in the second area 22 and is configured as the first spacer layer 71. Moreover, the orthographic projection of the second part of the color filter layer on the first substrate 101 overlaps with the orthographic projection of the black matrix 5 on the first substrate 101. The third part of the color filter layer is located in the third area 23 and is configured as the second spacer layer 72. In this way, the color filter in the plurality of sub-pixels 81 / 82 / 83 in the display area 3, the first spacer layer 71, and the second spacer layer 72 can be formed simultaneously by performing the same patterning process on the film layer for forming the color filter, simplifying the manufacturing process and production efficiency. The first spacer layer 71 and the second spacer layer 72 can be color filter films of any color, such as red, green, blue, or white, etc., and the embodiments of the present disclosure do not limit this. In the above embodiments, a part of the color filter layer serves as the first spacer layer 71 and the second spacer layer 72 to simplify the manufacturing process of the display panel. In this case, for example, in Figure 3D In the shown embodiment, the color filter layer in the display area 3 can directly extend into the third area 23 to serve as the second spacer layer 72. Of course, in other embodiments, the color filter layer in the display area 3 and the second spacer layer 72 can also be disconnected. Figure 3D Other features not mentioned in the shown embodiment are the same as those in Figure 3A and can be referred to the description of Figure 3A . It should be noted that in other embodiments, the second spacer layer 72 may not be provided in the third area 23, or instead of using the color filter layer as the first spacer layer 71 and the second spacer layer 72, other film layers are used to make the first spacer layer 71 and the second spacer layer 72. The first spacer layer 71 and the second spacer layer 72 can be organic film layers or inorganic film layers. The material of the organic film layer is, for example, resin, and the material of the inorganic film layer is, for example, silicon oxide, silicon nitride, or silicon dioxide, etc.

[0078] For example, the plurality of spacers 40 located in the display area 3 includes a plurality of main spacers 401 and a plurality of sub-spacers 402. The height h of the main spacer 401 in the direction perpendicular to the first substrate 101 41 is greater than the height h of the sub-spacer 402 in the direction perpendicular to the first substrate 101 42The shape and size of each of the plurality of second support pillars 42 and the shape and size of each of the plurality of third support pillars 43 are the same as the shape and size of each of the plurality of sub-spacers 402; the shape and size of each of the plurality of first support pillars 41 are the same as the shape and size of each of the plurality of main spacers 401. Thus, the height h of each of the first support pillars 41 in the direction perpendicular to the first substrate 101 1 is greater than the height h of each of the second support pillars 42 in the direction perpendicular to the first substrate 101 2 , and the height h of each of the first support pillars 41 in the direction perpendicular to the first substrate 101 1 is greater than the height h of each of the third support pillars 43 in the direction perpendicular to the first substrate 101 3 , thereby compensating for the step difference between the first region 21 and the second region 22 and the third region 23 due to the absence of a spacer layer. Moreover, the plurality of second support pillars 42, the plurality of third support pillars 43, and the plurality of sub-spacers 402 can be formed in the same patterning process using the same mask, and the plurality of first support pillars 41 and the plurality of main spacers 401 can be formed in the same patterning process using the same mask.

[0079] For example, in other embodiments, the plurality of third support pillars 43 may include a plurality of main support pillars and a plurality of sub-support pillars, the shape and size of each of the plurality of main support pillars being the same as the shape and size of each of the plurality of main spacers 401, and the shape and size of each of the plurality of sub-support pillars being the same as the shape and size of each of the plurality of sub-spacers 402, so that the plurality of second support pillars 42, the plurality of sub-support pillars, and the plurality of sub-spacers 402 can be formed in the same patterning process using the same mask, and the plurality of first support pillars 41, the plurality of main support pillars, and the plurality of main spacers 401 can be formed in the same patterning process using the same mask.

[0080] For example, as Figure 3A shown, the display panel further includes a buffer layer 11 and a driving circuit layer 12. The buffer layer 11 is located on the side of the first substrate 101 close to the second substrate 102 and is in direct contact with the first substrate 101 to prevent subsequent etching processes from damaging the first substrate 101. That is, in the light-transmitting region 1, there is no other layer or structure between the buffer layer 11 and the first substrate 101, which is conducive to improving the light transmittance of the light-transmitting region 1 to improve the sensing effect of the optoelectronic sensing device and achieve a better imaging effect, such as a better photographing effect and a more rapid and accurate fingerprint recognition effect.

[0081] The driving circuit layer 12 is located on the side of the buffer layer 11 away from the first substrate 101 and is located in the display area 3 and the border area 2. A plurality of spacers 40, a plurality of first support pillars 41, a plurality of second support pillars 42, and a plurality of third support pillars 43 are all located between the driving circuit layer 12 and the protective layer 6. The driving circuit layer 12 is not provided in the light-transmitting area 1. The edge of the driving circuit layer 12 close to the light-transmitting area 1 is located at the junction of the light-transmitting area 1 and the first area 21, as Figure 3A shown. Since the thickness of the driving circuit layer 12 in the direction perpendicular to the first substrate 101 is greater than the thickness of the buffer layer 11 in the direction perpendicular to the first substrate 101, and the driving circuit layer 12 is not provided in the light-transmitting area 1, therefore, at the edge of the driving circuit layer 12 close to the light-transmitting area 1, the driving circuit layer 12 and the buffer layer 11 have a stepped structure (or step difference), so that the stepped structure (or step difference) at the edge position of the driving circuit layer 12 does not fall into the light-transmitting area 1, so as to avoid the influence of the stepped structure in the light-transmitting area 1 on the light transmittance uniformity and the light transmission color uniformity. Alternatively, in other embodiments, the edge of the driving circuit layer 12 close to the light-transmitting area 1 is located in the first area 21.

[0082] Figure 3B FIG. is a schematic cross-sectional view along the first direction of a partial 103 of the display panel provided by the embodiment of the present disclosure including the driving circuit layer. Figure 3C is Figure 3B a schematic cross-sectional view along the second direction of the partial 103 of the driving circuit layer shown in FIG., and the first direction is perpendicular to the second direction. For example, the display panel is a liquid crystal display panel, and liquid crystal is filled between the first substrate 101 and the second substrate 102. Combining Figure 3B and Figure 3C , the driving circuit layer 12 includes thin film transistors, and the driving transistor is taken as an example for illustration. As Figure 3B shown, the thin film transistor includes a gate 50, a semiconductor layer 60, and a source-drain electrode layer 18; as Figure 3CAs shown, the source-drain electrode layer 18 includes a source electrode 181 and a drain electrode 182. The driving circuit layer 12 further includes a gate insulating layer 16 covering the gate 50, a first insulating layer 17 insulating the semiconductor layer 60 from the source electrode 181 and the drain electrode 182, a common electrode 31, a pixel electrode 32 opposite to the common electrode 31, a second insulating layer 19 insulating the common electrode 31 from the source electrode 181 and the drain electrode 182, and a third insulating layer 35 insulating the common electrode 31 from the pixel electrode 32. The pixel electrode 32 is electrically connected to the drain electrode 182 through a via hole passing through the second insulating layer 19 and the third insulating layer 35. For example, the common electrode 31 is formed over the entire surface and is disconnected at the position where the via hole is provided. By applying a common voltage to the common electrode and a pixel voltage to the pixel electrode, the pixel voltage and the common voltage form a deflection electric field to deflect the liquid crystal to act as an optical switch, and cooperate with the color filter layer to achieve color display. For example, the driving circuit layer 12 further includes various signal lines (not shown in the figure), such as a power supply line for supplying voltage to the pixel electrode and the common electrode, a gate line for supplying a scanning voltage to the gate 50, and a data line for supplying a data voltage to the source electrode 181 and the drain electrode 182, etc., which can be designed with reference to the conventional technologies in the art.

[0083] For example, as Figure 3AAs shown, in the light-transmitting region 1, a first liquid crystal layer 131 is disposed between the buffer layer 11 and the second substrate 102, and the first liquid crystal layer 131 is in direct contact with the buffer layer 11. The first liquid crystal layer 131 includes a portion of the first alignment layer 91 located on the second substrate 102 in the light-transmitting region, a portion of the second alignment layer 92 located on the first substrate 101 in the light-transmitting region 1, and the first liquid crystal located between the first alignment layer 91 and the second alignment layer 92. The materials of the first alignment layer 91 and the second alignment layer 92 are, for example, polyimide (PI). When the first liquid crystal layer is filled between the buffer layer 11 and the second substrate 102, compared with filling air, if air is filled, light will be reflected and refracted on the lower surface of the second substrate 102 and the upper surface of the first substrate 101, thereby reducing the transmittance. However, the refractive indices of the first liquid crystal layer and the glass substrates (for example, both the first substrate 101 and the second substrate 102 are glass substrates) are similar. Therefore, after filling the first liquid crystal layer 131, the first substrate 101, the first liquid crystal layer 131, and the second substrate 102 can be regarded as a whole medium, so that the number of reflections of light on the lower surface of the second substrate 102 and the upper surface of the first substrate 101 will be reduced, thereby improving the transmittance. In this solution, there is no protective layer 6 between the first substrate 101 and the second substrate 102 in the light-transmitting region 1, only the buffer layer 11 and the first liquid crystal layer 131, and no support pillars or spacers or any other structures with a height similar to that of the first support pillar, the second support pillar, and the spacer are provided. Compared with this solution, if a spacer or a support pillar or other similar structures are provided in the light-transmitting region 1, the spacer or the support pillar or other similar structures will hinder the light from passing through the light-transmitting region 1 to reach the optoelectronic sensor device, thereby resulting in a lower transmittance in the area where the imaging device is provided. Moreover, the uniformity of the brightness and the uniformity of the color of the light reaching the optoelectronic sensor device 15 through the light-transmitting region 1 will be reduced, which is not conducive to obtaining a better imaging effect.

[0084] For example, in the border region 2 and the display region 3, a second liquid crystal layer 132 is disposed between the protective layer 6 and the driving circuit layer 12, and the liquid crystal in the first liquid crystal layer 131 communicates with the liquid crystal in the second liquid crystal layer 132 through the intervals between the plurality of first support pillars 41, the intervals between the plurality of second support pillars 42, and the intervals between the plurality of third support pillars 43.

[0085] For example, in another embodiment, as Figure 4As shown, the protective layer 6 also covers the light-transmitting area 1. In the light-transmitting area 1, the protective layer 6 is in direct contact with the second substrate 102, and the first liquid crystal layer 132 is located between the buffer layer 11 and the protective layer 6 and is in direct contact with the protective layer 6. In this case, in the light-transmitting area 1, only the protective layer 6, the buffer layer 11, and the first liquid crystal layer 132 are provided between the first substrate 101 and the second substrate 102 to improve the light transmittance of the light-transmitting area 1 and the uniformity of the brightness and color of the light reaching the optoelectronic sensor device 15. At this time, for example, the protective layer 6 is formed over the entire surface of the second substrate 102, and no patterning process is required for the protective layer 6, and its material is a thermosetting material. Figure 4 Other features not mentioned in the embodiments shown are the same as those in Figure 3A and can be referred to the description of Figure 3A .

[0086] For example, in another embodiment, as Figure 5 shown, no liquid crystal layer is provided in the light-transmitting area 1. In the light-transmitting area 1, air 133 is filled between the second substrate 102 and the buffer layer 11; the display panel includes a first sealant 14, and the first sealant 14 is located between the second substrate 102 and the buffer layer 11, surrounds the entire light-transmitting area 1, and is in direct contact with both the buffer layer 11 and the protective layer 6. In this case, in the light-transmitting area 1, only the protective layer 6, the buffer layer 11, and the air 133 are provided between the first substrate 101 and the second substrate 102 to improve the light transmittance of the light-transmitting area 1 and the uniformity of the brightness and color of the light reaching the optoelectronic sensor device 15.

[0087] Figure 6A FIG. is an overall plan view of another display panel provided by an embodiment of the present disclosure, Figure 6B FIG. is an overall plan view of yet another display panel provided by an embodiment of the present disclosure, Figure 6C FIG. is an overall plan view of still another display panel provided by an embodiment of the present disclosure, Figure 7A is Figure 6A an enlarged view of the optoelectronic sensing area and its surrounding area in Figure 7B and is Figure 7A a cross-sectional view taken along line B-B' in Figure 6A and Figure 7A shown. For example, in the embodiments shown in Figure 6B and Figure 6CAs shown in the figure (not shown), etc., the embodiments of the present disclosure do not limit the number of light-transmitting regions. For example, two adjacent light-transmitting regions among multiple light-transmitting regions are the first light-transmitting region 110 and the second light-transmitting region 120 respectively. The display panel further includes: an intermediate region 130, a third spacer layer 73, multiple fourth support pillars 44, and multiple fifth support pillars 45.

[0088] The intermediate region 130 is located between the second region surrounding the first light-transmitting region 110 and the second region surrounding the second light-transmitting region 120. The third spacer layer 73 is on the same layer as and connected to the above-mentioned first spacer layer 71, and includes a first part 731 and a second part 732. The first part 731 and the second part 732 face each other, and the intermediate region 130 is located between the first part 731 and the second part 732. Multiple fourth support pillars 44 are arranged along the first part 731 and are spaced apart from each other. The orthographic projection of the multiple fourth support pillars 44 on the first substrate 101 is located within the orthographic projection of the first part 731 on the first substrate 101. Multiple fifth support pillars 45 are arranged along the second part 732 and are spaced apart from each other. The orthographic projection of the multiple fifth support pillars 45 on the first substrate 101 is located within the orthographic projection of the second part 732 on the first substrate 101. In the direction perpendicular to the first substrate 101, the multiple fourth support pillars 44, the multiple fifth support pillars 45, and the multiple second support pillars 42 are arranged on the same layer. The shape and size of each of the multiple fourth support pillars 44 and the shape and size of each of the multiple fifth support pillars 45 are the same as the shape and size of each of the multiple second support pillars 42, so as to maintain the same cell thickness (the distance between the first substrate 101 and the second substrate 102) in the corresponding region of the display panel.

[0089] For example, as Figure 7A shown, the display panel further includes: multiple sixth support pillars 46 and multiple seventh support pillars 47. Multiple sixth support pillars 46 are located on the side of the first part 731 close to the intermediate region 130, are arranged along the first part 731 and are spaced apart from each other; multiple seventh support pillars 47 are located on the side of the second part 732 close to the intermediate region 130, are arranged along the second part 732 and are spaced apart from each other. In the direction perpendicular to the first substrate 101, the multiple sixth support pillars 46, the multiple seventh support pillars 47, and the multiple first support pillars 41 are arranged on the same layer. The shape and size of each of the multiple sixth support pillars 46 and the shape and size of each of the multiple seventh support pillars 47 are the same as the shape and size of each of the multiple first support pillars 41, and no spacer layer is provided at the positions where the multiple sixth support pillars 46 and the multiple seventh support pillars 47 are located, so as to maintain the same cell thickness at these positions as that of the first region 21. This solution can provide support in the border region between two adjacent light-transmitting regions, maintain the same cell thickness, and further improve the stability of the border region between two adjacent light-transmitting regions to maintain the uniformity of the two light-transmitting regions.

[0090] For example, the planar shapes of the first part 731 and the second part 732 are both straight line segments and parallel to each other, so that the structure is flat, simple and easy to manufacture. Of course, in other embodiments, the planar shapes of the first part 731 and the second part 732 may also include broken lines, smooth curves, etc., and can be designed according to the actual needs according to the specific shape of the border area, as long as the area between two adjacent light-transmitting areas can achieve a supporting effect similar to that in the above embodiments.

[0091] For example, in the embodiment shown in FIG. 7, the third region surrounding the first light-transmitting region 110 and the third region surrounding the second light-transmitting region 120 are connected to each other to form an integral region, and this integral region surrounds the entire border area, separating the display region 3 from the border area, so as to form a transition between the border area and the display region 3 and maintain the stability of the edge of the display region 3 close to the border area.

[0092] In Figure 7A - 7B the shown embodiment, the black matrix 5 covers the middle region 130 to make the middle region 130 light-impermeable, and the structure in the middle region 130 is the same as the structure in the above-mentioned third region 23. For example, when the third support columns 43 in the third region 23 include a plurality of main support columns and a plurality of sub-support columns, as Figure 7B shown, a plurality of middle spacers 49 are provided in the middle region 130, and the plurality of middle spacers 49 include a plurality of middle main spacers 491 and a plurality of middle sub-spacers 492; the shape and size of each of the plurality of middle main spacers 491 are the same as the shape and size of each of the plurality of main support columns in the third region 23 and the shape and size of each of the plurality of main spacers 401 in the display region 3, and the shape and size of each of the plurality of middle sub-spacers 492 are the same as the shape and size of each of the plurality of sub-support columns in the third region 23 and the shape and size of each of the plurality of sub-spacers 402 in the display region 3, so as to maintain the same cell thickness between the middle region and the first region 21, and a plurality of middle sub-spacers 492, a plurality of second support columns 42, a plurality of sub-support columns and a plurality of sub-spacers 402 can be formed in the same patterning process using the same mask, and a plurality of middle main spacers 491, a plurality of first support columns 41, a plurality of main support columns and a plurality of main spacers 401 can be formed in the same patterning process using the same mask. Figure 7A Other features not mentioned in the shown embodiment are the same as those in Figure 3A Please refer to the description of the embodiment shown in Figure 3A shown.

[0093] In other embodiments, the plurality of third support pillars 43 in the third region 23 do not include the main support pillar, and the middle region 130 may also not include the middle main spacer. Instead, the shape and size of each of the plurality of middle spacers 49 in the middle region 130 and the shape and size of each of the plurality of third support pillars 43 in the third region 23 are the same as those of each of the plurality of sub-spacers 402 in the display region 3. For example, the plurality of third support pillars 43 in the third region 23 include the main support pillar, and the plurality of middle spacers 49 in the middle region 130 do not include the middle main spacer 491; or, the plurality of third support pillars 43 in the third region 23 do not include the main support pillar, and the plurality of middle spacers 49 in the middle region 130 include the middle main spacer 491, that is, the above features can be combined with each other.

[0094] Figure 8A For Figure 6A Another enlarged schematic diagram of the optoelectronic sensing region and its peripheral region in Figure 8B is Figure 8A a schematic cross-sectional view along the C-C' line in Figure 8A - 8B The embodiment shown in Figure 7A differs from that shown in Figure 8A and Figure 8B in that the middle region 130 is a middle display region, the middle display region 130 includes a plurality of middle pixels arranged in an array, each of the plurality of middle pixels includes a plurality of color middle sub-pixels, the black matrix 5 defines the plurality of color middle sub-pixels in the middle display region 130, and the light transmittance of the middle display region 130 is less than that of the display region 3, that is, the middle display region 130 is a grayscale display region, and the brightness of the middle display region 130 is darker, and the brightness is not higher than 30% of the brightness of the display region 3. For example, by making the portion of the black matrix 5 located in the middle display region 130 and the portion of the black matrix 5 located in the display region 3 have different areas so that the aperture ratio of the middle display region 130 is less than that of the display region 3. For example, in Figure 8A and Figure 8B the embodiment shown, the line width w 2 of the portion of the black matrix 5 located in the middle display region 130 is 1, so that the brightness of the middle display area 130 is not higher than 30% of the brightness of the display area 3. Of course, in other embodiments, a light transmittance adjustment film layer such as a filter layer (not referring to the above-mentioned color film layer) may be additionally provided in the middle display area 130 to reduce the light transmittance of the middle display area 130, so that the brightness of the middle display area 130 is not higher than 30% of the brightness of the display area 3. In this embodiment, the brightness of the middle display area 130 is reduced to achieve a dark display. For example, by making the middle display area 130 always display a black screen through a display driving circuit, the structure of the middle display area 130 can be simplified, the design of the display driving circuit can be simplified, the process difficulty can be reduced, and at the same time, since the area of the middle display area 130 is very small, this method will not significantly affect the display effect near the middle display area 130.

[0095] Alternatively, in other embodiments, the middle display area 130 is a normal display area, and the light transmittance of the middle display area 130 is equal to the light transmittance of the display area 3, that is, normal display, so as to improve the display quality near the middle display area 130 and better enhance the user experience.

[0096] For example, in Figure 8A the embodiment shown, the display panel further includes a plurality of middle spacers, and the plurality of middle spacers are located in the middle display area 130 and are arranged in an array. For example, the structures of the plurality of middle spacers are the same as the structures of the plurality of spacers 40 in the display area 3.

[0097] For example, in at least one embodiment, the arrangement density of the plurality of intermediate sub-spacers 492 in the intermediate display area 130 is less than the arrangement density of the plurality of sub-spacers 402 in the display area 3. For example, in the intermediate display area, the arrangement density of the intermediate main spacer 491 is less than the arrangement density of the plurality of main spacers 401 in the display area 3, and the arrangement density of the intermediate sub-spacers 492 is less than the arrangement density of the plurality of sub-spacers 402 in the display area 3. For example, in the display area 3, the arrangement density of the sub-spacers 402 is 287 / 288, that is, for every 288 sub-pixels in the display area 3, 287 sub-spacers 402 are provided; for example, the arrangement density of the main spacers 401 is 1 / 288, that is, for every 288 sub-pixels in the display area 3, 1 main spacer 401 is provided; however, in the intermediate display area, the arrangement density of the intermediate sub-spacers 492 is 70 / 72, that is, for every 72 sub-pixels in the intermediate display area, 70 intermediate sub-spacers 492 are provided; for example, the arrangement density of the intermediate main spacer 491 is 1 / 72, that is, for every 72 sub-pixels in the intermediate display area, 1 intermediate main spacer 491 is provided. As described above, relative to the display area 3, the area of the black matrix 5 in the intermediate display area is larger. During the manufacturing process of the display panel, after the black matrix 5 is formed, the black matrix 5 defines a plurality of sub-pixel openings in the display area 3 and a plurality of intermediate sub-pixel openings in the intermediate display area, and the size of each intermediate sub-pixel opening is smaller than the size of each sub-pixel opening; in the subsequent process of forming, for example, the protective layer 6, compared with the intermediate sub-pixel openings, the film layer for forming the protective layer 6 is more likely to enter the sub-pixel openings. Therefore, generally, the thickness of the part of the protective layer 6 located in the intermediate display area in the direction perpendicular to the first substrate 101 is greater than the thickness of the part of the protective layer 6 located in the display area 3 in the direction perpendicular to the first substrate 101, that is, the protective layer also covers the intermediate display area; the thickness of the part of the protective layer covering the intermediate display area in the direction perpendicular to the first substrate is greater than the thickness of the part of the protective layer covering the display area in the direction perpendicular to the first substrate. Thus, spacers of the same size are more likely to be deformed under an external force in the display area 3 than in the intermediate display area, that is, the intermediate main spacer 491 and the intermediate sub-spacers 492 in the intermediate display area are less likely to be deformed. Since the number and distribution density of the intermediate sub-spacers 492 are much greater than the number and distribution density of the intermediate main spacer 491, the number and distribution density of the sub-spacers 492 have a greater influence on the cell thickness stability of the intermediate display area 130.Therefore, the arrangement density of the middle sub-spacers 492 in the middle display area 130 is made smaller than the arrangement density of the sub-spacers 402 in the display area 3, so as to increase the deformation possibility or deformation amount of the middle sub-spacers 492 in the middle display area 130, so that it can fully play a buffering role in the middle display area, maintain a stable box thickness and maintain the same box thickness as in the display area 3 as much as possible.

[0098] Figure 6A - 6B In the embodiment, the plurality of light-transmitting areas are arranged along a straight line, that is, the planar arrangement pattern of the plurality of light-transmitting areas is a straight line segment. In other embodiments, the plurality of light-transmitting areas may not be arranged along a straight line. For example, the planar arrangement pattern of the plurality of light-transmitting areas is a polygon such as a triangle or a rectangle, or a circle, which is not limited in the embodiments of the present disclosure. In the case where the display panel includes three, four, or other plurality of light-transmitting areas, the structure of the intermediate area between any two adjacent light-transmitting areas is the same as Figure 7A - 7B The middle area is the same as or Figure 8A - 8B Similar to the middle display area in FIG, the third area 23 mentioned above exists between the frame area 2 and the display area 3, which will not be repeated here.

[0099] For example, in Figure 6C In the illustrated embodiment, the photoelectric sensing area 20 includes at least three light-transmitting areas, for example, a first light-transmitting area 110, a second light-transmitting area 120, a third light-transmitting area 1300 and an auxiliary function area 140. For example, the auxiliary function area 140 is a fill light area for setting a fill light. The fill light is configured to emit fill light when the first light-transmitting area 110, the second light-transmitting area 120 and the third light-transmitting area 1300 are working. The fill light can be reflected by any object such as a finger (when the photoelectric sensing device is a fingerprint recognition device) or a face (when the photoelectric sensing device is a face recognition device or a camera) to be imaged and then incident on the first light-transmitting area 110, the second light-transmitting area 120 and the third light-transmitting area 1300 to be received by the photoelectric sensing devices arranged in the first light-transmitting area 110, the second light-transmitting area 120 and the third light-transmitting area 1300, so as to improve the imaging quality of the photoelectric sensing device when the external light is insufficient. For example, in some other embodiments, the auxiliary function area 140 is also replaced by the fourth light-transmitting area, that is, the photoelectric sensing area 20 includes four light-transmitting areas, each of which is used to set the above-mentioned photoelectric sensing device. At this time, the first light-transmitting area 110, the second light-transmitting area 120, the third light-transmitting area 1300 and the fourth light-transmitting area 140 are arranged in a 2×2 matrix, and the plane arrangement pattern is a rectangle.

[0100] For example, Figure 6CAs shown, the first light-transmitting region 110, the second light-transmitting regions 120 and 1300 are arranged in a 2×2 matrix with the auxiliary function region. The interval between the first row and the second row of the 2×2 matrix and the interval between the first column and the second column of the 2×2 matrix form a cross-shaped region 150, and the structure within the cross-shaped region 150 is the same as the structure within the middle region. Other structures between adjacent ones, such as the fourth support pillar, the fifth support pillar, the sixth support pillar, and the seventh support pillar, etc., are all the same as those described in the previous embodiments and will not be repeated here.

[0101] In the above embodiments, the position of the photoelectric sensing region 20 is close to the edge of the display panel, that is, close to the non-display region, so as to facilitate connecting the signal lines located in the non-display region and used to control the photoelectric sensor devices in the photoelectric sensing region 20 to the photoelectric sensing region 20. For example, these signal lines can be directly connected to the photoelectric sensing region 20 from the non-display region without passing through the display region. However, in other embodiments, the photoelectric sensing region 20 can also be located at other positions. For example, Figure 6D This is an overall planar schematic diagram of another display panel provided by an embodiment of the present disclosure. As Figure 6D shown, the photoelectric sensing region 20 is located in the middle region of the display panel. At this time, at least part of the above signal lines, such as the power supply line (VDD line, etc.), needs to pass through the display region 3, and the positive projection of the signal line on the black matrix in the display region 3 is located within the black matrix. An insulating layer can be provided between the signal line and the signal line in the black matrix when necessary to prevent signal crosstalk.

[0102] For example, in the above embodiments, the display panel is a liquid crystal display panel, the first substrate 101 is an array substrate, and the second substrate 102 is a color filter substrate. Or, in other embodiments, the display panel is an organic light-emitting diode (OLED) display panel, the first substrate 101 is an array substrate, and the second substrate 102 is a packaging cover plate, and other corresponding structures can be designed according to the structure of the OLED display panel. Of course, in the OLED display panel, a packaging film can also be used for packaging instead of the packaging cover plate.

[0103] In the embodiments of the present disclosure, for example, both the first substrate 101 and the second substrate 102 are substrate substrates such as glass substrates, quartz substrates, polyimide substrates, etc. The embodiments of the present disclosure do not limit the specific materials of the first substrate 101 and the second substrate 102.

[0104] Figure 9 This is a schematic diagram of a manufacturing method of a display panel provided by an embodiment of the present disclosure. As Figure 9As shown, a buffer layer 11, a driving circuit layer 12, a second alignment layer 92, a first support pillar, a second support pillar, a third support pillar, and spacers are sequentially formed on a first substrate 101. On a second substrate 102, film layers such as a black matrix 5, a plurality of pixels, a first spacer layer, a second spacer layer, and a protective layer are formed. For example, a second sealant 140 surrounding the display area is coated on the second substrate 102, and liquid crystal is dropped on the first substrate 101. Since the area of the light-transmitting region 1 is extremely small relative to the liquid crystal droplet onto which the liquid crystal is dropped, it is difficult to accurately drop the liquid crystal droplet directly into the light-transmitting region 1. Therefore, the liquid crystal can be dropped in a larger area such as the display area 3. Then, the second substrate 102 and the first substrate 101 are aligned, and the second substrate 102 and the first substrate 101 are bonded to each other through the second sealant 140. The liquid crystal flows into the light-transmitting region 1 successively through the second region 22 and the first region 21 and through the spaces between a plurality of first support pillars 41 and the spaces between a plurality of second support pillars 42, thereby filling the liquid crystal in the light-transmitting region 1.

[0105] In the manufacturing method of the display panel, the first spacer layer 71 and the second spacer layer 72 can be formed by performing the same patterning process on the same film layer. By performing the same patterning process on the film layer for forming the color filter, the color filters in a plurality of sub-pixels 81 / 82 / 83 in the display area 3, the first spacer layer 71, and the second spacer layer 72 are simultaneously formed. A plurality of second support pillars 42, a plurality of third support pillars 43, a plurality of sub-spacers 402, a plurality of fourth support pillars 44, and a plurality of fifth support pillars 45 are formed using the same mask in the same patterning process, and a plurality of first support pillars 41, a plurality of main spacers 401, a plurality of sixth support pillars 46, and a plurality of seventh support pillars 47 are formed using the same mask in the same patterning process to simplify the manufacturing process. In addition, the structures of a plurality of intermediate spacers are formed using the same mask in the same patterning process as the plurality of spacers 40 in the display area 3.

[0106] For example, during the formation Figure 3A of the display panel shown, after forming a protective material layer covering the entire second substrate 102, a patterning process is performed on the protective material layer using a mask to remove the portion of the protective material layer located in the light-transmitting region 1, obtaining Figure 3A the protective layer 6 shown. At this time, for example, the material of the protective layer 6 is a photosensitive material, such as photosensitive resin.

[0107] For example, during the formation Figure 5 of the display panel shown, after forming a first sealant 14 surrounding the entire light-transmitting region 1 on the first substrate 11, fine coating is performed, for example, and then liquid crystal is dropped in the display area 3 of the first substrate 11, and then alignment is performed.

[0108] Figure 10 This is a schematic diagram of a display device provided by an embodiment of the present disclosure. AsFigure 10 As shown, the display device 1000 includes any display panel 100 provided by the embodiments of the present disclosure. For example, the display device 1000 is a liquid crystal display device or an OLED display device. For example, the display device can be implemented as the following products: mobile phones, tablet computers, displays, laptop computers, ATM machines, and any other products or components with a display function. The display device 1000 has all the technical effects of the display panel 100, which will not be repeated here.

[0109] For example, the side of the second substrate 102 away from the first substrate 101 is the display side. The display device further includes a photoelectric sensor 15, such as Figure 3A shown. For example, the photoelectric sensor 15 is located on the side of the first substrate 101 away from the second substrate 102, and the photoelectric sensor 15 is configured to receive light from the display side, that is, the light from the display side reaches the photoelectric sensor 15 through the light-transmitting area. The amount of light received by the photoelectric sensor 15 in the display device provided by the embodiments of the present disclosure is large, the uniformity of the light brightness is high, and the uniformity of the color is high.

[0110] For example, other structures of the display device 1000, such as the backlight required for a liquid crystal display device, etc., can be designed with reference to conventional technologies in the art, and the embodiments of the present disclosure have no limitations on this.

[0111] For example, the display device can be a display module, such as including the above display panel and the photoelectric sensor 15, or including the above display panel and the backlight, or can also be a display device further including other structures, etc., such as the above mobile phones, tablet computers, displays, laptop computers, ATM machines and other products.

[0112] The above are only exemplary embodiments of the present invention and are not used to limit the protection scope of the present invention. The protection scope of the present invention is determined by the appended claims.

Claims

1. A display panel, comprising: a display area and a photoelectric sensing area, wherein the display area is located outside the photoelectric sensing area, the display area includes a plurality of pixels arranged in an array, and each pixel of the plurality of pixels includes a plurality of color sub-pixels; the photoelectric sensing area includes a light-transmitting area and a border area surrounding the light-transmitting area, and the border area includes: a first area surrounding the light-transmitting area; a second area located on a side of the first area away from the light-transmitting area and surrounding the first area; a third area located on a side of the second area away from the light-transmitting area and located between the second area and the display area to separate the second area from the display area; a plurality of spacers arranged in an array, wherein the plurality of spacers are located in the display area and not in the light-transmitting area; a plurality of first support pillars located in the first area, arranged around the light-transmitting area and spaced apart from each other; a plurality of second support pillars located in the second area, arranged around the second area and spaced apart from each other; a plurality of third support pillars located in the third area and arranged in an array; the display panel further includes: a first substrate; a second substrate opposite to the first substrate; a black matrix located on a side of the second substrate close to the first substrate, covering the border area, and defining the plurality of color sub-pixels in the display area, and the orthographic projections of the plurality of spacers, the plurality of first support pillars, the plurality of second support pillars, and the plurality of third support pillars on the first substrate are located within the orthographic projection of the black matrix on the first substrate; a protective layer located on the second substrate and on a side of the black matrix close to the first substrate, covering the border area and the display area, wherein the plurality of spacers, the plurality of first support pillars, the plurality of second support pillars, and the plurality of third support pillars are located between the first substrate and the protective layer to maintain a distance between the first substrate and the second substrate; and a first spacer layer located in the second area and between the black matrix and the protective layer, and the orthographic projection of the plurality of second support pillars on the first substrate is located within the orthographic projection of the first spacer layer on the first substrate.

2. The display panel according to claim 1, wherein, the planar arrangement pattern of the first spacer layer is a closed ring surrounding the first area.

3. The display panel according to claim 1, wherein, in the first area, the protective layer is in direct contact with the black matrix; the protective layer has a stepped structure in the first area, and the stepped structure includes a first part away from the second area and a second part close to the second area; in a direction perpendicular to the first substrate, the height of the first part is less than the height of the second part, and the height of the first support pillar is greater than the height of the second support pillar.

4. The display panel according to claim 1, wherein, the planar arrangement pattern of the plurality of first support pillars includes at least one ring.

5. The display panel according to claim 4, wherein, The planar arrangement pattern of the multiple first support pillars includes multiple concentric rings; Along the radial direction of the concentric rings, the first support pillars in the multiple concentric rings are aligned or the first support pillars in adjacent concentric rings among the multiple concentric rings are staggered.

6. The display panel according to claim 5, wherein, The ratio of the total area of the orthographic projections of the multiple first support pillars on the first substrate to the total area of the orthographic projections of the multiple second support pillars on the first substrate is 5 to 10.

7. The display panel according to claim 6, wherein, The distance between the centers of two adjacent first support pillars among the multiple first support pillars located in the same concentric ring is equal to the length or width of one pixel in the display area.

8. The display panel according to claim 3, further comprising: A second spacer layer, located in the third region and between the black matrix and the protective layer, and the orthographic projections of the multiple third support pillars on the first substrate are located within the orthographic projection of the second spacer layer on the first substrate.

9. The display panel according to claim 8, wherein, The first spacer layer and the second spacer layer are integrally formed or spaced apart from each other through the protective layer.

10. The display panel according to claim 8, comprising: A color filter layer, located on the side of the second substrate close to the first substrate and including a first part, a second part, and a third part, wherein, The first part of the color filter layer is located in the multiple color sub-pixels in the display area, and the orthographic projection of the first part of the color filter layer on the first substrate does not overlap with the orthographic projection of the black matrix on the first substrate; The second part of the color filter layer is located in the second region and configured as the first spacer layer, and the orthographic projection of the second part of the color filter layer on the first substrate overlaps with the orthographic projection of the black matrix on the first substrate; The third part of the color filter layer is located in the third region and configured as the second spacer layer.

11. The display panel according to claim 10, wherein, The multiple spacers in the display area include multiple main spacers and multiple sub-spacers, and the height of the main spacers in the direction perpendicular to the first substrate is greater than the height of the sub-spacers in the direction perpendicular to the first substrate; The shape and size of each of the multiple second support pillars and the shape and size of each of the multiple third support pillars are the same as the shape and size of each of the multiple sub-spacers; The shape and size of each of the multiple first support pillars are the same as the shape and size of each of the multiple main spacers.

12. The display panel according to claim 1, further comprising: A buffer layer, located on the side of the first substrate close to the second substrate and in direct contact with the first substrate; and The driving circuit layer is located on a side of the buffer layer away from the first substrate and is located in the display area and the border area. Among them, the plurality of spacers, the plurality of first support pillars, the plurality of second support pillars, and the plurality of third support pillars are all located between the driving circuit layer and the protective layer. No driving circuit layer is provided in the light-transmitting area, and an edge of the driving circuit layer close to the light-transmitting area is located in the first area or at the junction of the light-transmitting area and the first area.

13. The display panel according to claim 12, wherein, In the light-transmitting area, a first liquid crystal layer is provided between the buffer layer and the second substrate, and the first liquid crystal layer is in direct contact with the buffer layer.

14. The display panel according to claim 13, wherein, In the border area and the display area, a second liquid crystal layer is provided between the protective layer and the driving circuit layer, and the liquid crystals in the first liquid crystal layer and the liquid crystals in the second liquid crystal layer communicate through the intervals between the plurality of first support pillars, the intervals between the plurality of second support pillars, and the intervals between the plurality of third support pillars.

15. The display panel according to claim 13, wherein, The protective layer also covers the light-transmitting area; in the light-transmitting area, the protective layer is in direct contact with the second substrate, and the first liquid crystal layer is located between the buffer layer and the protective layer and is in direct contact with the protective layer.

16. The display panel according to claim 12, wherein, No liquid crystal layer is provided in the light-transmitting area; In the light-transmitting area, air is filled between the second substrate and the buffer layer; The display panel includes a first sealant, and the first sealant is located between the second substrate and the buffer layer, surrounds the light-transmitting area and is in direct contact with the buffer layer and the protective layer.

17. The display panel according to claim 10 includes a plurality of the light-transmitting areas, and two adjacent light-transmitting areas are a first light-transmitting area and a second light-transmitting area respectively; the display panel also includes: An intermediate area, located between a second area surrounding the first light-transmitting area and a second area surrounding the second light-transmitting area; A third spacer layer, on the same layer as and adjacent to the first spacer layer, includes a first part and a second part, wherein the first part and the second part are opposite to each other in a direction perpendicular to the direction from the first light-transmitting area to the second light-transmitting area in a plane parallel to the first substrate, and the intermediate area is located between the first part and the second part; A plurality of fourth support pillars, arranged along the first part and spaced apart from each other, wherein the orthographic projections of the plurality of fourth support pillars on the first substrate are located within the orthographic projection of the first part on the first substrate; A plurality of fifth support columns are arranged along the second part and spaced apart from each other, wherein the orthographic projection of the plurality of fifth support columns on the first substrate is located within the orthographic projection of the second part on the first substrate. In a direction perpendicular to the first substrate, the plurality of fourth support columns, the plurality of fifth support columns and the plurality of second support columns are arranged on the same layer, and the shape and size of each of the plurality of fourth support columns, the shape and size of each of the plurality of fifth support columns are the same as the shape and size of each of the plurality of second support columns.

18. The display panel according to claim 17, further comprising: A plurality of sixth support columns are located on one side of the first part close to the middle region, arranged along the first part and spaced apart from each other; and A plurality of seventh support columns are located on one side of the second part close to the middle region, arranged along the second part and spaced apart from each other, wherein in a direction perpendicular to the first substrate, the plurality of sixth support columns, the plurality of seventh support columns and the plurality of first support columns are arranged on the same layer, and the shape and size of each of the plurality of sixth support columns, the shape and size of each of the plurality of seventh support columns are the same as the shape and size of each of the plurality of first support columns.

19. The display panel according to claim 17, wherein, The planar shapes of the first part and the second part are both straight line segments and are parallel to each other.

20. The display panel according to claim 17, wherein, The black matrix covers the middle region, and the structure within the middle region is the same as the structure within the third region.

21. The display panel according to claim 17, wherein, The middle region is a middle display area, the middle display area includes a plurality of middle pixels arranged in an array, each of the plurality of middle pixels includes a plurality of color middle sub-pixels, the black matrix defines the plurality of color middle sub-pixels in the middle display area, and the light transmittance of the middle display area is less than or equal to the light transmittance of the display area.

22. The display panel according to claim 21, wherein, The protective layer also covers the middle display area; The thickness of the part of the protective layer covering the middle display area in a direction perpendicular to the first substrate is greater than the thickness of the part of the protective layer covering the display area in a direction perpendicular to the first substrate.

23. The display panel according to claim 21, further comprising: A plurality of middle spacers are located in the middle display area and arranged in an array, wherein, The structure of the plurality of middle spacers is the same as the structure of the plurality of spacers in the display area.

24. The display panel according to claim 21, further comprising: A plurality of middle spacers are located in the middle display area and arranged in an array, wherein, The arrangement density of the plurality of middle spacers in the middle display area is less than the arrangement density of the plurality of spacers in the display area.

25. The display panel according to any one of claims 17-24, wherein, The optoelectronic sensing region includes at least three light-transmitting regions and an auxiliary function region. The at least three light-transmitting regions and the auxiliary function region are arranged in a 2×2 matrix. The interval between the first row and the second row of the 2×2 matrix and the interval between the first column and the second column of the 2×2 matrix form a cross-shaped region, and the structure within the cross-shaped region is the same as the structure within the middle region.

26. The display panel according to any one of claims 1-24, wherein, the display panel is a liquid crystal display panel, the first substrate is an array substrate, and the second substrate is a color filter substrate; or, the display panel is an organic light-emitting diode (OLED) display panel, the first substrate is an array substrate, and the second substrate is a packaging cover plate.

27. A display device, comprising the display panel according to any one of claims 1-26.

28. The display device according to claim 27, wherein, the side of the second substrate away from the first substrate is the display side; the display device further includes: an optoelectronic sensor device, located in the light-transmitting region and on the side of the first substrate away from the second substrate, configured to receive light from the display side.

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