Display panel and display device

Abstract

The invention provides a display panel and a display device. Specifically, the display panel comprises a display area and a photosensitive area; the display panel includes: a substrate; the pixel defining layer is arranged on the substrate; the pixel defining layer located in the photosensitive area comprises a plurality of first light holes; the shading layer is arranged on the pixel defining layer; the shading layer located in the photosensitive area comprises a plurality of second light holes; wherein the orthographic projection of the photosensitive area on the substrate is located in the range of the orthographic projection of the display area on the substrate; the orthographic projection of at least one second light-transmitting hole on the substrate is located in the range of the orthographic projection of one first light-transmitting hole on the substrate. According to the technical scheme, the reflectivity of the photosensitive area can be reduced, and the overall consistency of the display panel can be improved.

Description

Technical Field

[0001] The present disclosure relates to the field of display technologies, and particularly to a display panel and a display device. Background Art

[0002] With the development of technology, users have continuously put forward new requirements for the energy consumption level and intelligence of display devices. Ambient light sensors are increasingly applied to display devices because they can sense the surrounding light conditions, which helps to automatically adjust the brightness of the display panel and reduce the power consumption of the product. However, there are still certain defects in the current display devices provided with ambient light sensors, such as poor appearance consistency of the display panel. Summary of the Invention

[0003] In view of this, the purpose of the present disclosure is to provide a display panel and a display device.

[0004] Based on the above purpose, the present disclosure provides a display panel, including a display area and a photosensitive area; the display panel includes:

[0005] A substrate;

[0006] A pixel defining layer disposed on the substrate; the pixel defining layer in the photosensitive area includes a plurality of first light-transmitting holes;

[0007] A light-shielding layer disposed on the pixel defining layer; the light-shielding layer in the photosensitive area includes a plurality of second light-transmitting holes; wherein,

[0008] The orthographic projection of the photosensitive area on the substrate is within the orthographic projection of the display area on the substrate;

[0009] The orthographic projection of at least one of the second light-transmitting holes on the substrate is within the orthographic projection of one of the first light-transmitting holes on the substrate.

[0010] Based on the same inventive concept, an embodiment of the present disclosure further provides a display device, including: the display panel as described in any one of the foregoing, the display panel including an outgoing light side and a non-outgoing light side disposed opposite to each other;

[0011] A photosensitive device disposed on the non-outgoing light side of the display panel.

[0012] Based on the same inventive concept, an embodiment of the present disclosure further provides a method for manufacturing a display panel, the display panel including a display area and a photosensitive area, the manufacturing method including:

[0013] Providing a substrate;

[0014] Forming a pixel defining layer on the substrate; the pixel defining layer in the photosensitive area includes a plurality of first light-transmitting holes;

[0015] A light-shielding layer is formed on the pixel definition layer; the light-shielding layer located in the photosensitive area includes a plurality of second light-transmitting holes; wherein,

[0016] The orthographic projection of the photosensitive area on the substrate is within the range of the orthographic projection of the display area on the substrate;

[0017] The orthographic projection of at least one of the second light-transmitting holes on the substrate is within the range of the orthographic projection of one of the first light-transmitting holes on the substrate.

[0018] As can be seen from the above, a display panel and a display device provided by the present disclosure, the display panel includes a display area and a photosensitive area, and the pixel definition layer located in the photosensitive area is provided with a plurality of first light-transmitting holes; the light-shielding layer located in the photosensitive area includes a plurality of second light-transmitting holes; wherein, the orthographic projection of the photosensitive area on the substrate is within the range of the orthographic projection of the display area on the substrate; and the orthographic projection of at least one of the second light-transmitting holes on the substrate is within the range of the orthographic projection of one of the first light-transmitting holes on the substrate, thereby reducing the reflectivity of the photosensitive area and improving the overall consistency of the display panel. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the present disclosure or related technologies, the following will briefly introduce the drawings required for use in the embodiments or related technology descriptions. Obviously, the drawings in the following descriptions are only the embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1A Showing a schematic structural diagram of a display device provided by an embodiment of the present disclosure;

[0021] Figure 1B Showing a cross-sectional view of a display panel provided by an embodiment of the present disclosure;

[0022] Figure 1C Showing Figure 1A A schematic diagram of a state of the dashed box A in

[0023] Figure 2A Showing a cross-sectional view of another display panel provided by an embodiment of the present disclosure;

[0024] Figure 2B Showing a partial structural top view of a display panel provided by an embodiment of the present disclosure;

[0025] Figure 2C Showing an optical path schematic diagram of a display panel provided by an embodiment of the present disclosure;

[0026] Figure 3Shows an optical micrograph of a display panel provided by an embodiment of the present disclosure;

[0027] Figure 4A Shows a partial structural schematic diagram of a display panel provided by an embodiment of the present disclosure;

[0028] Figure 4B Shows a schematic diagram of a photosensitive area of a display panel provided by an embodiment of the present disclosure;

[0029] Figure 4C Shows a schematic diagram of a photosensitive area of another display panel provided by an embodiment of the present disclosure;

[0030] Figure 5A Shows a schematic diagram of a photosensitive area of another display panel provided by an embodiment of the present disclosure;

[0031] Figure 5B Shows Figure 5A An enlarged view of the dashed box B in;

[0032] Figure 6 Shows a schematic flowchart of a manufacturing method of a display panel provided by an embodiment of the present disclosure. Detailed implementation manners

[0033] To make the objectives, technical solutions and advantages of the present disclosure clearer and more understandable, the present disclosure will be further described in detail below with reference to specific embodiments and the accompanying drawings.

[0034] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present disclosure should have the ordinary meanings understood by those of ordinary skill in the art to which the present disclosure belongs. The "first", "second" and similar terms used in the embodiments of the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. The terms such as "including" or "comprising" mean that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects. The terms such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms such as "upper", "lower", "left" and "right" are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0035] It should be understood that when a layer or element is referred to as being on another layer or substrate, it can be directly on the other layer or substrate, or there may be an intermediate layer between the layer or element and the other layer or substrate.

[0036] The present disclosure describes exemplary embodiments with reference to cross-sectional views and / or plan views as idealized exemplary drawings. In the drawings, the thickness of layers and the area of regions are enlarged for clarity. Therefore, variations in the shape relative to the drawings due to, for example, manufacturing techniques and / or tolerances can be envisioned. Thus, the exemplary embodiments should not be construed as limited to the shapes of the regions shown herein, but include shape deviations caused by, for example, manufacturing. For example, an etched region shown as rectangular will generally have curved features. Thus, the regions shown in the drawings are schematic in nature, and their shapes are not intended to show the actual shape of the regions of the device and are not intended to limit the scope of the exemplary embodiments.

[0037] Figure 1A The structural schematic diagram of a display device 100 provided by an embodiment of the present disclosure is shown. Exemplarily, the display device 100 may be a television, a desktop computer, a mobile phone, a mobile computer, a tablet computer, a media player, a smart wearable device, a vehicle-mounted terminal, a personal digital assistant (PDA), or other products or components with a display function. As Figure 1A shown, the display device 100 may be a portable display product, such as Figure 1A the mobile phone shown.

[0038] Below, taking the mobile phone shown by the above display device 100 as an Figure 1A example, some embodiments of the present disclosure will be schematically described, but the embodiments of the present disclosure are not limited thereto.

[0039] In some embodiments, referring to Figure 1A , the display device 100 includes a display panel. Among them, the display panel includes an outgoing light side and a non-outgoing light side that are oppositely arranged. The outgoing light side is the side of the display panel for display. The display panel includes a display area 101 and an image acquisition area 102. The display area 101 includes a plurality of pixel units and can be used to display a picture. Generally, the image acquisition area 102 is used to install a camera. It should be understood that the image acquisition area 102 cannot be used for display.

[0040] The display panel without a polarizing structure has been increasingly widely used due to its advantages such as effectively reducing the thickness of the display panel and being beneficial to improving the bending performance of the folding screen. Figure 1B The cross-sectional view of a display panel provided by an embodiment of the present disclosure is shown. Among them, the pixel defining layer 103 includes a plurality of first pixel openings 1022, and a light-emitting element can be arranged in each pixel opening 1022. A light-shielding layer 104 is arranged on the pixel defining layer 103. The light-shielding layer 104 includes a plurality of second pixel openings 1052, and a color film can be arranged in each pixel opening. Since the light-shielding layer 104 is almost opaque, the transmittance of the non-color film region is very low.

[0041] To sense the ambient light, for a display panel without a polarization-free structure, a photosensitive area 1011 can be set within the display area 101 to achieve the perception of ambient light.

[0042] In some embodiments, the display area 101 may include a photosensitive area 1011 and a main display area 1012. The main display area 1012 includes a plurality of sub-pixels for displaying user pictures. The photosensitive area 1011 includes a plurality of sub-pixels and at least one light-transmitting hole (not shown in the figure) located between the plurality of sub-pixels. Among them, the ambient light can enter the non-light-emitting side of the display panel through the light-transmitting hole, and the photosensitive device located on the non-light-emitting side of the display panel can sense the ambient light. Based on the photosensitive information of the photosensitive device, the parameters of the display panel, such as brightness, can be automatically adjusted to achieve the effect of energy conservation, and the entire adjustment process does not require user intervention and is highly intelligent.

[0043] It should be noted that the photosensitive area 1011 can be circular (as Figure 1A shown), rectangular, regular polygon, etc. Exemplarily, the photosensitive area 1011 can be a circle with a diameter of 3.0 mm.

[0044] Although the light-transmitting hole can achieve the perception of ambient light, in the dark state, due to the existence of the light-transmitting hole, the reflectivity of the photosensitive area 1011 is higher than that of the main display area 1012, resulting in obvious color zoning on the display panel and a deteriorated overall black visual effect. Figure 1C Shown Figure 1A is a schematic diagram of a state of the dashed box A shown in the figure. It can be clearly seen from Figure 1C that the color of the photosensitive area 1011 is lighter, and there is an obvious boundary between the photosensitive area 1011 and the main display area.

[0045] In view of this, the embodiments of the present disclosure provide a display panel. The display panel includes a display area and a photosensitive area. The pixel defining layer located in the photosensitive area includes a plurality of first light-transmitting holes; the light-shielding layer located in the photosensitive area includes a plurality of second light-transmitting holes; wherein, the orthographic projection of the photosensitive area on the substrate is within the orthographic projection of the display area on the substrate; and the orthographic projection of at least one of the second light-transmitting holes on the substrate is within the orthographic projection of one of the first light-transmitting holes on the substrate, thereby reducing the reflectivity of the photosensitive area and improving the overall consistency of the display panel. In other words, the embodiments of the present disclosure reduce the size of the second light-transmitting hole to achieve the reduction of the reflectivity while ensuring that the ambient light can enter, and avoid the problem of color zoning in the dark state.

[0046] Figure 2A Shows a cross-sectional view of a display panel provided by an embodiment of the present disclosure. Figure 2BShows a partial structural top view of a display panel provided by an embodiment of the present disclosure. It should be noted that, Figure 2A The cross-sectional view of shows the sensing area 1011 of the display panel. Figure 2B The top view only shows the positions of the light-transmitting holes.

[0047] In some embodiments, referring to Figure 2A and Figure 2B , the display panel 200 includes:

[0048] A substrate 201; here, the substrate 201 can be a flexible substrate. For example, the flexible substrate can be a polyethylene terephthalate (PET) substrate, a polyimide (PI) substrate, etc.

[0049] A pixel defining layer 202 is disposed on the substrate 201. Among them, the pixel defining layer 202 includes a plurality of first pixel openings 2022 and a plurality of first light-transmitting holes 2021. It should be noted that the plurality of first pixel openings 2022 and the plurality of first light-transmitting holes 2021 are separated from each other by the pixel defining layer 202.

[0050] Here, a plurality of light-emitting elements can be disposed in the plurality of first pixel openings 2022. Optionally, the light-emitting element can be an organic light-emitting diode (OLED), a quantum dot light-emitting diode (QLED), etc., and the embodiments of the present disclosure do not make specific limitations here.

[0051] It should be noted that the light-emitting color of the light-emitting element can be red, blue, green or white. The present disclosure does not make specific limitations on this.

[0052] An encapsulation layer 203 and a flexible multi-layer integrated on-cell touch layer 204 (flexible multiple layer oncell, abbreviated as FMLOC) are disposed on the pixel defining layer 202. The present disclosure does not make specific limitations on the materials of the encapsulation layer 203 and the FMLOC layer 204. The encapsulation layer 203 is used to reduce the risk of water and oxygen erosion. The flexible multi-layer integrated on-cell touch layer 204 is used to implement the touch function.

[0053] A light-shielding layer 205 is disposed on the flexible multi-layer integrated on-cell touch layer 204. Among them, the light-shielding layer 205 includes a plurality of second pixel openings 2052 and a plurality of second light-transmitting holes 2051. It should be noted that the light-shielding layer 205 can be black to absorb the outgoing light and ambient light.

[0054] Optionally, the orthographic projection of the second pixel opening 2052 on the substrate 201 covers the orthographic projection of the first pixel opening 2022 on the substrate 201, that is, the size of the second pixel opening 2052 is larger than the size of the first pixel opening 2022.

[0055] It should be understood that color films can be provided in the second pixel openings 2052. Generally, one second pixel opening 2052 corresponds to one first pixel opening 2022. Exemplarily, the color of the color film in the second pixel opening 2052 is the same as the emission color of the light-emitting element in the corresponding first pixel opening 2022. For example, the color film corresponding to a red light-emitting element is also red, the color film corresponding to a green light-emitting element is also green, the color film corresponding to a blue light-emitting element is also blue, and the color film corresponding to a white light-emitting element can be red, blue, or green.

[0056] Optionally, the first light-transmitting hole 2021 and the second light-transmitting hole 2051 have the same shape, such as circular, rectangular, rectangular with a missing corner, regular polygon, etc., and the present disclosure does not limit this.

[0057] Refer to Figure 2B , the orthographic projection of the second light-transmitting hole 2051 on the substrate 201 is located within the orthographic projection range of the first light-transmitting hole 2021 on the substrate 201. In other words, the size d1 of the second light-transmitting hole 2051 is smaller than the size d2 of the first light-transmitting hole 2021.

[0058] Exemplarily, the first light-transmitting hole 2021 and the second light-transmitting hole 2051 are circular, and the sizes d1 and d2 refer to the radii of the circles; exemplarily, the first light-transmitting hole 2021 and the second light-transmitting hole 2051 are rectangular, and the sizes d1 and d2 refer to the length and width of the rectangles.

[0059] In some embodiments, the difference in distance between the boundary of the orthographic projection of the first light-transmitting hole 2021 on the substrate and the boundary of the orthographic projection of the second light-transmitting hole 2051 on the substrate is 1.1 - 3.0 μm, such as 1.1 μm, 1.3 μm, 1.8 μm, 2.3 μm, 2.5 μm, 3.0 μm. Such a size setting can meet the process alignment requirements, meet the need for ambient light perception, and at the same time reduce the reflectivity of the photosensitive area.

[0060] It should be noted that the multiple second pixel openings 2052 and the multiple second light-transmitting holes 2051 are separated from each other by the light-shielding layer 205. Exemplarily, the distance between the boundary of the second pixel opening 2052 and the boundary of the adjacent second light-transmitting hole 2051 is not less than 13 μm, such as 13 μm, 15 μm, 20 μm, etc. Such a distance can effectively avoid the interference of ambient light on the light emitted from the display panel.

[0061] The transparent adhesive layer 206 is disposed on the light-shielding layer 205. Here, the transparent adhesive layer 206 is used to bond the cover plate 207 disposed thereon. It should be understood that the cover plate 207 can isolate the display panel from the external environment.

[0062] Optionally, the cover plate 207 can be a single-layer glass cover plate or a stack of multiple sub-cover plates. The multiple sub-cover plates can also be bonded through a transparent adhesive layer, and the embodiments of the present disclosure do not make specific limitations here. Optionally, the light transmittance of the transparent adhesive layer is greater than or equal to 90%.

[0063] By adopting such a setting of the first light-transmitting hole 2021 and the second light-transmitting hole 2051, the reflection problem caused by the second light-transmitting hole 2051 can be effectively reduced, the color difference between the photosensitive area 1011 and the main display area 1012 in the dark state can be reduced, and the overall consistency of the display panel, that is, the integrated black view effect, can be improved.

[0064] Figure 2C The optical path diagram of a display panel provided by an embodiment of the present disclosure is shown. Refer to Figure 2C , the emitted light F of the light-emitting element in the first pixel opening 2022 can enter the cover plate 207 through the second light-transmitting hole 2051. If the emitted light F is emitted from the cover plate 207 out of the display panel 200, light leakage occurs, and the display effect of the photosensitive area 1011 is reduced.

[0065] To ensure the display effect, the embodiments of the present disclosure further define the relationship between the distance D between the boundary of the orthographic projection of the second light-transmitting hole 2051 on the substrate 201 and the boundary of the orthographic projection of the adjacent first pixel opening 2022, and the distance h between the pixel defining layer 202 and the light-shielding layer 205.

[0066] It should be noted that the distance h depends on the thickness of the encapsulation layer 203 and the flexible multi-layer integrated touch control layer 204. If the sub-encapsulation layers of the encapsulation layer 203 are many and thick, the distance h is large; if the sub-encapsulation layers of the encapsulation layer 203 are few and thin, the distance h is small, and the present disclosure does not make specific limitations here.

[0067] In some embodiments, the distance D is not less than the product of h and a preset correction coefficient. Here, the preset correction coefficient can be 1, 1.1, 1.2, 2.0, etc.

[0068] Optionally, the preset correction coefficient is not less than where n is the refractive index of the cover plate 207. Here, the minimum angle when the emitted light F undergoes total internal reflection at the interface between the cover plate 207 and the air is To reduce the light leakage of the second light-transmitting hole 2051, the incident angle θ of the emitted light F at the interface between the cover plate 207 and the air is ≥β. When the preset correction coefficient is equal to , the incident angle θ is the critical angle β of total internal reflection. When the preset correction coefficient is greater than When the incident angle θ is greater than β, the outgoing light F undergoes total internal reflection at the interface between the cover plate 207 and the air, which can ensure that there is no light leakage from the second light-transmitting hole 2051. Optionally, the thickness of the transparent adhesive layer 206 is less than the thickness of the cover plate 207, and its influence on the outgoing light F can be ignored.

[0069] Exemplarily, the material of the cover plate 207 is glass, and its refractive index is 1.55, then the preset correction can be at least 0.84.

[0070] The inventors of the present disclosure found that based on the technical solution that the size of the second light-transmitting hole 2051 is smaller than that of the first light-transmitting hole 2021, after the manufactured display panel 200 undergoes reliability condition treatment, at low gray-scale brightness, there is an obvious boundary between the photosensitive area 1011 and the main display area 1012, and the edge of the photosensitive area 1011 is brighter than the inside of the main display area 1012 and the photosensitive area 1011. Here, the reliability condition refers to operating the display panel under certain environmental conditions (humidity, temperature, light, etc.) for a certain period of time. It should be understood that those skilled in the art can set the reliability conditions according to the product process requirements, and the present disclosure does not make specific limitations thereto.

[0071] The inventors observed the display panel 200 through an optical display mirror and found that the size of the second light-transmitting hole near the edge of the photosensitive area 1011 is larger than the size of the second light-transmitting hole far from the edge of the photosensitive area 1011.

[0072] Figure 3 Shows an optical micrograph of a display panel provided by an embodiment of the present disclosure. Refer to Figure 3 , on the left side of the boundary 301 is the photosensitive area 1011, and on the right side of the boundary 301 is the main display area 1012. It should be noted that the boundary 301 is only used to identify the photosensitive area 1011 and the main display area 1012.

[0073] The distances of multiple second light-transmitting holes 2051 from the boundary 301 are different. For example, the distance between the second light-transmitting hole 2051 near the inside of the photosensitive area 1011 and the boundary 301 is S1, and the distance between the second light-transmitting hole 2051 near the boundary of the photosensitive area 1011 and the boundary 301 is S2. In the case of adopting the same designed size of the second light-transmitting hole, the size of the second light-transmitting hole 2051 corresponding to the distance S1 is smaller than the size of the second light-transmitting hole 2051 corresponding to the distance S2. Since the size of the second light-transmitting hole 2051 corresponding to the distance S2 is larger than the designed size, at low gray-scale, the outgoing light leaks out from the second light-transmitting hole 2051, resulting in an obvious boundary between the photosensitive area 1011 and the main display area 1012.

[0074] After research, the inventors noticed that during the exposure process, the second light-transmitting hole 2051 near the boundary of the photosensitive region 1011 was prone to being too large in size. In view of this, the inventors adjusted the designed size of the second light-transmitting hole 2051 to obtain a display panel that meets the display requirements without changing the manufacturing method.

[0075] Figure 4A FIG. shows a partial structural schematic diagram of a display panel provided by an embodiment of the present disclosure. The following will take the shape of the photosensitive region 1011 as a circle in Figure 4A as an example to elaborate on the edge region 302 in detail. As Figure 4A shown, the photosensitive region 1011 includes an inner region 303 and an edge region 302 ( Figure 4A the gray marked region in). Among them, in the direction from the outside to the inside ( Figure 4A the arrow direction), the length d3 of the edge region 302 can be flexibly set, and the present disclosure does not make specific limitations on this. Optionally, the length d3 of the edge region 302 accounts for 1 / 50 to 1 / 20 of the length R of the photosensitive region 1011. Here, the direction from the outside to the inside is explained. For example, when the shape of the photosensitive region 1011 is a rectangle, the arrow direction can be the direction from the boundary to the center of the rectangle; when the shape of the photosensitive region 1011 is a regular polygon, the direction from the outside to the inside can be the direction from the boundary to the center of the regular polygon.

[0076] In some embodiments, the second light-transmitting hole of the light-shielding layer 205 in the photosensitive region 1011 can control the position and size of the second light-transmitting hole by means of a mask. Figure 4B FIG. shows a schematic diagram of a photosensitive region of a display panel provided by an embodiment of the present disclosure. As Figure 4B shown, the inner region 303 includes a plurality of second light-transmitting holes 3031 ( Figure 4B partially shown); the edge region 302 includes a plurality of second light-transmitting holes 3021. The mask 400 includes a first region 401 corresponding to the edge region 302 and a second region 402 corresponding to the inner region 303. Among them, the first region 401 includes a first pattern 4011 corresponding to the second light-transmitting hole 3021; the second region 402 includes a second pattern 4021 corresponding to the second light-transmitting hole 3031.

[0077] Since the size of the second light-transmitting hole 3021 in the actual obtained edge region 302 after exposure is larger than the size of the corresponding pattern on the mask, in the embodiments of the present disclosure, the size of the corresponding pattern on the mask in the edge region 302 is adjusted so that the size of the second light-transmitting hole 3021 in the actually obtained edge region 302 after exposure is approximately the same as the size of the second light-transmitting hole 3031 in the internal region 303. In some embodiments, the size of the first pattern 4011 is smaller than the size of the second image 4021. Here, the size of the second light-transmitting hole 3021 obtained after exposure will be larger than the size of the first pattern 4011, and the size of the second light-transmitting hole 3031 is approximately the same as the size of the second pattern 4021. Since the size of the first pattern 4011 is smaller than the size of the second image 4021, the size of the second light-transmitting hole 3021 can be close to the size of the second light-transmitting hole 3031, thereby avoiding the light leakage problem caused by the too large size of the second light-transmitting hole 3021 in the edge region.

[0078] Optionally, the difference between the size of the first pattern 4011 and the size of the second image 4021 is 1.0 - 2.0 μm. For example, the size of the first pattern 4011 is 1.0 μm, 1.2 μm, 1.4 μm, 1.7 μm, or 2.0 μm smaller than the size of the second image 4021. With such a size difference, the sizes of the second light-transmitting hole 3021 and the second light-transmitting hole 3031 obtained after exposure are basically the same. It should be noted that "basically the same" and "close" mean within an acceptable deviation range for a specific value determined by those of ordinary skill in the art, such as less than 5% or less than 10%.

[0079] In some embodiments, the closer the first pattern 4011 is to the second region 402 (corresponding to the closer the second light-transmitting hole 3021 is to the internal region 303), the larger its size. The influence of the exposure process on the size of the actual second light-transmitting hole is gradual. Adopting such a design can better adapt to the exposure process, ensure that the second light-transmitting hole in the edge region 302 far from the internal region 303 does not have a light leakage problem, and improve the display effect of the display panel in the low gray level state.

[0080] Figure 4C Schematic diagram of the photosensitive region of another display panel provided by the embodiments of the present disclosure. Refer to Figure 4C , the photosensitive region 1011 includes an internal region 303 and an edge region 302 ( Figure 4C the medium gray marked region). The internal region 303 includes a plurality of second light-transmitting holes 3031 ( Figure 4C(the shown part); the edge area 302 includes a plurality of second light-transmitting holes 3021. The size of the second light-transmitting hole 3021 is smaller than that of the second light-transmitting hole 3031. With such a technology, it is possible to reduce the reflectivity of the second light-transmitting hole 3021 in the edge area 302 and avoid light leakage while meeting the requirements of ambient light perception, thereby improving the integrated black visual effect of the entire display panel in the dark state and avoiding the obvious boundary problem between the photosensitive area 1011 and the main display area 1012 at low gray levels.

[0081] In some embodiments, the closer the second light-transmitting hole 3021 is to the inner area 303, the larger its size is. That is to say, the size of the second light-transmitting hole 3021 in the edge area 302 changes gradually according to its distance from the inner area 303. In such a way, the transition between the photosensitive area 1011 and the main display area 1012 can be made more natural, which helps to improve the display effect of the display panel and the integrated black visual effect in the dark state.

[0082] Next, embodiments of the present disclosure will be combined with Figure 5A and Figure 5B to exemplarily illustrate the arrangement of the light-transmitting holes and sub-pixels in the photosensitive area.

[0083] Figure 5A FIG. shows a schematic diagram of the photosensitive area of another display panel provided by an embodiment of the present disclosure. It should be noted that the orthographic projection of the second light-transmitting hole is within the orthographic projection of the first light-transmitting hole on the substrate, Figure 5A where the light-transmitting holes are shown and the first light-transmitting hole and the second light-transmitting hole are not distinguished.

[0084] In some embodiments, a plurality of light-transmitting holes 502 are arranged in multiple rows and multiple columns. Exemplarily, they are arranged in multiple rows in the x-axis direction and multiple columns in the y-axis direction, where the x-axis and the y-axis are perpendicular to each other.

[0085] Optionally, the light-transmitting hole 502 may include a first truncated rectangle 5021 and a second truncated rectangle 5022. Here, the first truncated rectangle 5021 and the second truncated rectangle 5022 may have different truncated positions, different truncated sizes, or both different truncated positions and different truncated sizes.

[0086] In some embodiments, the truncated positions of the first truncated rectangle 5021 and the second truncated rectangle 5022 are complementary. Here, complementary means that the four top corners of the rectangle can be filled. For example, as Figure 5A shown, the truncated corners of the first truncated rectangle 5021 are the two corners in the negative y-axis direction, and the truncated corners of the second truncated rectangle 5022 are the two corners in the positive y-axis direction.

[0087] Next, the first truncated rectangle 5021 and the second truncated rectangle 5022 can have multiple arrangements. Exemplarily, the first truncated rectangle 5021 and the second truncated rectangle 5022 are arranged staggeredly in at least one row (x-axis direction). Exemplarily, the first truncated rectangle 5021 and the second truncated rectangle 5022 are arranged staggeredly in at least one column (y-axis direction). By adopting the staggered arrangement, the space can be fully utilized within the limited area for setting the light-transmitting holes on the display panel, and in the case of truncated corner compensation, it helps the ambient light around to enter the light-transmitting holes evenly.

[0088] Referring to Figure 5A , for the positional relationship between the sub-pixels 501 and the light-transmitting holes 502, an example is as follows: In the x-axis direction, the green sub-pixels 5011 and the light-transmitting holes 502 are arranged staggeredly. For example, one light-transmitting hole 502 is set between two green sub-pixels 5011, and one green sub-pixel 5011 is set between two light-transmitting holes 502. Next, in the y-axis direction, a red sub-pixel 5012 and a blue sub-pixel 5013 are respectively arranged on both sides of the light-transmitting hole 502. For example, one light-transmitting hole 502, one red sub-pixel 5012, another light-transmitting hole 502, and one blue sub-pixel 5013 form a group and are arranged in a cycle.

[0089] Next, in combination with Figure 5B the dimensions of the first truncated rectangle 5021 and the second truncated rectangle 5022 will be described.

[0090] Figure 5B Shows Figure 5A an enlarged view of the dashed box B in. The distance g between the green sub-pixel 5011 and the adjacent light-transmitting hole 502, the distance e between the red sub-pixel 5012 and the adjacent light-transmitting hole 502, and the distance f between the blue sub-pixel 5013 and the adjacent light-transmitting hole 502 are all not less than 13 μm.

[0091] In some embodiments, as Figure 5B shown, the lengths of each side of the first truncated rectangle 5021 are respectively represented by b1, b2, and c2, and the lengths of each side of the second truncated rectangle 5022 are respectively represented by a1, a2, and c1. Exemplarily, the specific numerical values of b1, b2, c2, a1, a2, and c1 can refer to Table 1.

[0092] Table 1

[0093] Item <![CDATA[a1]]> <![CDATA[a2]]> <![CDATA[b1]]> <![CDATA[b2]]> <![CDATA[c1]]> <![CDATA[c2]]> Second light-transmitting hole 12.22μm 8.59μm 12.22μm 8.78μm 8.59μm 6.72μm First light-transmitting hole 14.42μm 10.79μm 14.42μm 10.98μm 10.79μm 8.92μm

[0094] For a display panel having the arrangement manner of the above embodiments and parameters such as Table 1, the integrality in the dark state can be excellent, there is no light leakage at the edge of the photosensitive area under low gray levels, the display effect is good, and it can meet the requirements of ambient light perception.

[0095] Some embodiments of the present disclosure also provide a method for manufacturing a display panel. Refer to Figure 1A , the display panel includes a display area 101 and a photosensitive area 1011. Figure 6 The flowchart shows a method for manufacturing a display panel provided by an embodiment of the present disclosure. As Figure 6 shown, the manufacturing method includes:

[0096] S602: As Figure 2A shown, provide a substrate 201;

[0097] S604: Form a pixel defining layer 202 on the substrate 201; the pixel defining layer located in the photosensitive area includes a plurality of first light-transmitting holes 2021;

[0098] S606: Form a light-shielding layer 205 on the pixel defining layer 202; the light-shielding layer 205 located in the photosensitive area includes a plurality of second light-transmitting holes 2051.

[0099] In the above steps, refer to Figure 1A , the orthographic projection of the photosensitive area 1011 on the substrate is within the orthographic projection of the display area 101 on the substrate; refer to Figure 2A , the orthographic projection of at least one second light-transmitting hole 2051 on the substrate 201 is within the orthographic projection of a first light-transmitting hole 2021 on the substrate 201.

[0100] In some embodiments, S606 includes: As Figure 4B shown, use a mask 400 to form the light-shielding layer through exposure and development; wherein, the first dimension of the second light-transmitting hole pattern 4011 corresponding to the edge of the photosensitive area of the mask 400 is smaller than the second dimension of the second light-transmitting hole pattern 4021 corresponding to the inside of the photosensitive area.

[0101] The method of the above embodiment is used to manufacture the corresponding display panel in any of the foregoing embodiments, and has the beneficial effects of the corresponding embodiments, which will not be elaborated here.

[0102] An embodiment of the present disclosure provides a display panel, including a display area 101 and a photosensitive area 1011 (refer to Figure 1A ). As Figure 2A shown, the display panel includes:

[0103] A substrate 201;

[0104] A pixel defining layer 202, disposed on the substrate 201; the pixel defining layer located in the photosensitive area includes a plurality of first light-transmitting holes 2021;

[0105] The light-shielding layer 205 is disposed on the pixel definition layer 202; the light-shielding layer 205 located in the photosensitive area includes a plurality of second light-transmitting holes 2051; wherein,

[0106] As Figure 1A shown, the orthographic projection of the photosensitive area 1011 on the substrate is within the orthographic projection of the display area 101 on the substrate;

[0107] As Figure 2A shown, the orthographic projection of at least one of the second light-transmitting holes 2051 on the substrate 201 is within the orthographic projection of one of the first light-transmitting holes 2021 on the substrate 201.

[0108] In some embodiments, as Figure 2C shown, the pixel definition layer 202 includes a plurality of first pixel openings 2022; the orthographic projection of the second light-transmitting holes 2051 on the substrate 201 and the orthographic projection of the first pixel openings 2022 on the substrate 201 do not overlap; and

[0109] a first distance D between the boundary of the orthographic projection of the second light-transmitting hole 2051 on the substrate 201 and the boundary of the orthographic projection of an adjacent first pixel opening 2022 on the substrate is not less than the product of the second distance h between the light-shielding layer 205 and the pixel definition layer 202 and a preset correction coefficient.

[0110] In some embodiments, further included is:

[0111] a cover plate 207 disposed on the light-shielding layer 205; the preset correction coefficient is not less than wherein, n is the refractive index of the cover plate 207.

[0112] In some embodiments, the light-shielding layer 205 includes a plurality of second pixel openings 2052;

[0113] the distance between the boundary of the orthographic projection of the second light-transmitting hole 2051 on the substrate 202 and the boundary of the orthographic projection of the second pixel opening 2052 on the substrate is not less than 13 μm (refer to Figure 5B e, f, g).

[0114] In some embodiments, referring to Figure 4B , a first size of the mask pattern 4011 corresponding to the second light-transmitting hole 3021 located at the edge 302 of the photosensitive area is smaller than a second size of the mask pattern 4021 corresponding to the second light-transmitting hole 3031 located inside the photosensitive area 303.

[0115] In some embodiments, the closer the second light-transmitting hole is to the inside of the edge of the photosensitive area, the larger the first size of the corresponding mask pattern 4011 is.

[0116] In some embodiments, the difference between the first dimension and the second dimension is 1.0 to 2.0 μm.

[0117] In some embodiments, referring to Figure 4C , the size of the second light-transmitting hole 3021 located at the edge 302 of the photosensitive area is smaller than the size of the second light-transmitting hole 3031 located inside the photosensitive area 303.

[0118] In some embodiments, referring to Figure 4C , the closer the second light-transmitting hole 3021 at the edge 302 of the photosensitive area is to the inside, the larger its size.

[0119] In some embodiments, referring to Figure 4A , in the direction from the outside to the inside of the photosensitive area (arrow direction), the length d3 of the edge accounts for 1 / 50 to 1 / 20 of the length R of the photosensitive area.

[0120] In some embodiments, the shapes of the first light-transmitting hole and the second light-transmitting hole are selected from a circle, a rectangle, a truncated rectangle, or a regular polygon.

[0121] In some embodiments, referring to Figure 5A , a plurality of the second light-transmitting holes are selected from a first truncated rectangle 5021 or a second truncated rectangle 5022;

[0122] A plurality of the second light-transmitting holes are arranged in multiple rows and multiple columns; wherein, in at least one row and / or at least one column, the first truncated rectangle 5021 and the second truncated rectangle 5022 are arranged alternately.

[0123] In some embodiments, the light-shielding layer 205 includes a plurality of second pixel openings, and the plurality of second pixel openings include a plurality of red pixel 5012 openings, a plurality of green pixel 5011 openings, and a plurality of blue pixel 5013 openings; wherein,

[0124] The plurality of green pixel 5011 openings are arranged in multiple rows and multiple columns, and in at least one row, the green pixel 5011 openings and the second light-transmitting holes 502 are arranged alternately; along the column direction of the second light-transmitting holes 502, the red pixel 5012 openings and the blue pixel 5013 openings are respectively arranged on both sides of the second light-transmitting holes.

[0125] Those of ordinary skill in the art should understand that: the discussion of any above embodiment is only exemplary, and is not intended to imply that the scope of the present disclosure (including the claims) is limited to these examples; under the concept of the present disclosure, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations in different aspects of the embodiments of the present disclosure as described above, which are not provided in detail for the sake of brevity.

[0126] Although the present disclosure has been described in connection with specific embodiments thereof, many alternatives, modifications, and variations of these embodiments will be apparent to those of ordinary skill in the art in light of the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) may be used with the embodiments discussed.

[0127] Embodiments of the present disclosure are intended to cover all such alternatives, modifications, and variations that fall within the broad scope of the appended claims. Accordingly, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the embodiments of the present disclosure shall be included within the protection scope of the present disclosure.

Claims

1. A display panel, characterized in that, It includes a display area and a photosensitive area; the display panel includes: a substrate; a pixel defining layer disposed on the substrate; the pixel defining layer in the photosensitive area includes a plurality of first light-transmitting holes; a light-shielding layer disposed on the pixel defining layer; the light-shielding layer in the photosensitive area includes a plurality of second light-transmitting holes; wherein, the orthographic projection of the photosensitive area on the substrate is within the range of the orthographic projection of the display area on the substrate; the orthographic projection of at least one of the second light-transmitting holes on the substrate is within the range of the orthographic projection of one of the first light-transmitting holes on the substrate.

2. The display panel according to claim 1, wherein The pixel defining layer includes a plurality of first pixel openings; the orthographic projection of the second light-transmitting hole on the substrate and the orthographic projection of the first pixel opening on the substrate do not overlap; and a first distance between the boundary of the orthographic projection of the second light-transmitting hole on the substrate and the boundary of the orthographic projection of an adjacent first pixel opening on the substrate is not less than the product of the second distance between the light-shielding layer and the pixel defining layer and a preset correction coefficient.

3. The display panel according to claim 2, wherein It further includes: Cover plate, disposed on the light-shielding layer; the preset correction coefficient is not less than where n is the refractive index of the cover plate.

4. The display panel according to claim 1, wherein the light-shielding layer includes a plurality of second pixel openings; the distance between the boundary of the orthographic projection of the second light-transmitting hole on the substrate and the boundary of the orthographic projection of the second pixel opening on the substrate is not less than 13 μm.

5. The display panel according to claim 1, characterized in that, A first dimension of a mask pattern corresponding to a second light-transmitting hole at the edge of the photosensitive area is smaller than a second dimension of a mask pattern corresponding to a second light-transmitting hole inside the photosensitive area.

6. The display panel according to claim 5, wherein The closer a second light-transmitting hole at the edge of the photosensitive area is to the inside, the larger the first dimension of the corresponding mask pattern.

7. The display panel according to claim 5, wherein The difference between the first dimension and the second dimension is 1.0 to 2.0 μm.

8. The display panel according to claim 1, wherein The size of a second light-transmitting hole at the edge of the photosensitive area is smaller than the size of a second light-transmitting hole inside the photosensitive area.

9. The display panel according to claim 8, wherein, The closer a second light-transmitting hole at the edge of the photosensitive area is to the inside, the larger its size.

10. The display panel according to any one of claims 5 to 9, characterized in that, In the direction from the outside to the inside of the photosensitive area, the length of the edge accounts for 1 / 50 to 1 / 20 of the length of the photosensitive area.

11. The display panel according to claim 1, characterized in that, The shapes of the first light-transmitting hole and the second light-transmitting hole are selected from a circle, a rectangle, a truncated rectangle or a regular polygon.

12. The display panel according to claim 11, wherein A plurality of the second light-transmitting holes are selected from a first truncated rectangle or a second truncated rectangle; a plurality of the second light-transmitting holes are arranged in multiple rows and multiple columns; wherein, in at least one row and / or at least one column, the first truncated rectangle and the second truncated rectangle are arranged alternately.

13. The display panel according to claim 12, wherein The light-shielding layer includes a plurality of second pixel openings, and the plurality of second pixel openings include a plurality of red pixel openings, a plurality of green pixel openings, and a plurality of blue pixel openings; wherein, the plurality of green pixel openings are arranged in multiple rows and multiple columns, and in at least one row, the green pixel openings and the second light-transmitting holes are arranged alternately; along the column direction of the second light-transmitting hole, the red pixel opening and the blue pixel opening are respectively arranged on both sides of the second light-transmitting hole.

14. A display device, characterized in that, It includes: a display panel according to any one of claims 1 to 13, the display panel includes an outgoing light side and a non-outgoing light side which are oppositely arranged; a photosensitive device disposed on the non-outgoing light side of the display panel.

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