Display panel and display device

Abstract

The utility model 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 technology, and in particular to a display panel and a display device. Background Art

[0002] With the development of science and technology, users are constantly putting forward new requirements for the energy consumption level and intelligence of display devices. Ambient light sensors are increasingly used in 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, the display devices currently equipped with ambient light sensors still have certain defects, such as poor consistency in the appearance of the display panel. Utility Model Content

[0003] In view of this, an object 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] substrate;

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

[0007] A light shielding layer is disposed on the pixel definition layer; the light shielding layer located 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 located within the range of 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 located within the range of 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, comprising: any of the above-mentioned display panels, wherein the display panel comprises a light-emitting side and a non-light-emitting side that are arranged opposite to each other;

[0011] The photosensitive device is arranged on the non-light-emitting 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, wherein the display panel includes a display area and a photosensitive area, and the manufacturing method includes:

[0013] providing a substrate;

[0014] A pixel definition layer is formed on the substrate; the pixel definition layer located in the light-sensitive 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 located 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 located within the range of the orthographic projection of one of the first light-transmitting holes on the substrate.

[0018] From the above description, it can be seen that the present disclosure provides a display panel and a display device, wherein the display panel includes a display area and a photosensitive area, wherein a pixel defining layer disposed in the photosensitive area includes a plurality of first light-transmitting holes; a light-shielding layer disposed in the photosensitive area includes a plurality of second light-transmitting holes; wherein the orthographic projection of the photosensitive area on the substrate is located 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 located 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the present disclosure or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1A A schematic diagram showing the structure of a display device provided by an embodiment of the present disclosure is shown;

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

[0022] Figure 1C Show Figure 1A A schematic diagram of a state of the dotted box A;

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

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

[0025] Figure 2C A schematic diagram of a light path of a display panel provided by an embodiment of the present disclosure is shown;

[0026] Figure 3An optical microscopic structure diagram of a display panel provided by an embodiment of the present disclosure is shown;

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

[0028] Figure 4B A schematic diagram showing a photosensitive area of ​​a display panel provided by an embodiment of the present disclosure is shown;

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

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

[0031] Figure 5B Show Figure 5A Enlarged view of the dashed box B;

[0032] Figure 6 A schematic flow chart of a method for manufacturing a display panel provided in an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0033] In order to make the objectives, technical solutions and advantages of the present disclosure more clearly understood, the present disclosure is further described in detail below in combination with specific embodiments and with reference to 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 be understood by people with ordinary skills in the field to which the present disclosure belongs. The "first", "second" and similar words used in the embodiments of the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0035] It will be understood that when a layer or an element is referred to as being on another layer or substrate, it can be directly on the other layer or substrate, or intervening layers may be present 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 that are idealized exemplary drawings. In the drawings, the thickness of the layers and the area of ​​the regions are exaggerated for clarity. Therefore, variations in the shapes relative to the drawings due to, for example, manufacturing techniques and / or tolerances are conceivable. Therefore, the exemplary embodiments should not be interpreted as being limited to the shapes of the regions shown herein, but include shape deviations due to, for example, manufacturing. For example, an etched region shown as a rectangle will typically have curved features. Therefore, the regions shown in the drawings are schematic in nature, and their shapes are not intended to illustrate the actual shapes of the regions of the device, and are not intended to limit the scope of the exemplary embodiments.

[0037] Figure 1A FIG. 1 is a schematic diagram of a display device 100 provided in an embodiment of the present disclosure. For example, 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 terminal, a personal digital assistant (PDA), or other products or components with a display function. Figure 1A As shown, the display device 100 may be a portable display product, such as Figure 1A The phone shown.

[0038] The display device 100 is used as an example below. Figure 1A Taking the mobile phone shown as an example, some embodiments of the present disclosure are schematically described, but the implementation methods of the present disclosure are not limited thereto.

[0039] In some embodiments, see Figure 1A The display device 100 includes a display panel. The display panel includes a light-emitting side and a non-light-emitting side that are relatively arranged. The light-emitting side is the side of the display panel used 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. Usually, 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] Display panels with non-polarized structures are becoming more and more widely used because of their advantages such as being able to effectively reduce the thickness of the display panel and improving the bending performance of the folding screen. Figure 1B A cross-sectional view of a display panel provided by an embodiment of the present disclosure is shown. The pixel defining layer 103 includes a plurality of first pixel openings 1022, and a light-emitting element can be disposed in each pixel opening 1022. A light shielding layer 104 is disposed on the pixel defining layer 103, and the light shielding layer 104 includes a plurality of second pixel openings 1052, and a color filter can be disposed in each pixel opening. Since the light shielding layer 104 is almost opaque, the transmittance of the non-color filter area is very low.

[0041] In order to sense the ambient light, a light-sensitive area 1011 may be provided in the display area 101 for a display panel without a polarization structure to realize the perception of the 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, and the user displays the picture. 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, 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 saving energy consumption, and the entire adjustment process does not require user intervention and is highly intelligent.

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

[0044] Although the light-transmitting holes can realize the perception of ambient light, in the dark state, due to the existence of the light-transmitting holes, the reflectivity of the photosensitive area 1011 is higher than that of the main display area 1012, resulting in obvious color partitioning of the display panel and poor overall black visual effect. Figure 1C Show Figure 1A A schematic diagram of a state of the dotted box A. Figure 1C It can be clearly seen that the color of the photosensitive area 1011 is lighter, and there is a clear boundary between the photosensitive area 1011 and the main display area.

[0045] In view of this, the embodiment of the present disclosure provides a display panel, which includes a display area and a photosensitive area, wherein a pixel defining layer disposed in the photosensitive area includes a plurality of first light-transmitting holes; a light-shielding layer disposed in the photosensitive area includes a plurality of second light-transmitting holes; wherein the orthographic projection of the photosensitive area on the substrate is located 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 located 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. In other words, the embodiment of the present disclosure reduces the size of the second light-transmitting holes, thereby reducing the reflectivity while ensuring that ambient light can enter, thereby avoiding the problem of color zoning in the dark state.

[0046] Figure 2A A cross-sectional view of a display panel provided by an embodiment of the present disclosure is shown. Figure 2BFIG. 1 is 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 shows the sensing area 1011 of the panel. Figure 2B The top view only shows the position of the light-transmitting hole.

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

[0048] Substrate 201: Here, substrate 201 may be a flexible substrate. For example, the flexible substrate may be a polyethylene terephthalate (PET) substrate, a polyimide (PI) substrate, or the like.

[0049] The pixel defining layer 202 is disposed on the substrate 201 , wherein 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 first pixel openings 2022 may be provided with a plurality of light emitting elements. Optionally, the light emitting element may be an organic light emitting diode (OLED), a quantum dot light emitting diode (QLED), etc., which is not specifically limited in the embodiment of the present disclosure.

[0051] It should be noted that the light emitting color of the light emitting element may be red, blue, green or white, which is not specifically limited in the present disclosure.

[0052] The encapsulation layer 203 and the flexible multiple layer integrated touch layer 204 (flexible multiple layer on cell, FMLOC for short) are arranged on the pixel defining layer 202. The present disclosure does not specifically limit the materials of the encapsulation layer 203 and the FMLOC layer 204. The encapsulation layer 203 is used to reduce the risk of corrosion by water and oxygen. The flexible multiple layer integrated touch layer 204 is used to realize the touch function.

[0053] The light shielding layer 205 is disposed on the flexible multi-layer integrated touch control layer 204. The light shielding layer 205 includes a plurality of second pixel openings 2052 and a plurality of second light transmission holes 2051. It should be noted that the light shielding layer 205 may be black to absorb the outgoing light and the 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 a color filter may be provided for the second pixel opening 2052. Generally, a second pixel opening 2052 corresponds to a first pixel opening 2022. Exemplarily, the color of the color filter of the second pixel opening 2052 is the same as the color of the light-emitting element of the corresponding first pixel opening 2022, for example, the color filter corresponding to the red light-emitting element is also red, the color filter corresponding to the green light-emitting element is also green, the color filter corresponding to the blue light-emitting element is also blue, and the color filter corresponding to the white light-emitting element may 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 a circle, a rectangle, a rectangular with missing corners, a regular polygon, etc., which is not limited in the present disclosure.

[0057] See also 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 dimensions d1 and d2 refer to the radius of the circle; exemplary, the first light-transmitting hole 2021 and the second light-transmitting hole 2051 are rectangular, and the dimensions d1 and d2 refer to the length and width of the rectangle.

[0059] In some embodiments, the distance between the boundary of the first light-transmitting hole 2021 on the substrate and the boundary of the second light-transmitting hole 2051 on the substrate is 1.1-3.0 μm, for example, 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 needs of ambient light perception, and reduce the reflectivity of the photosensitive area.

[0060] It should be noted that the plurality of second pixel openings 2052 and the plurality of 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 prevent 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 bonded to a 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 may be a single-layer glass cover plate, or a stack of multiple layers of sub-cover plates. The multiple layers of sub-cover plates may also be bonded together by a transparent adhesive layer, which is not specifically limited in the embodiment of the present disclosure. Optionally, the light transmittance of the transparent adhesive layer is greater than or equal to 90%.

[0063] The setting of the first light-transmitting hole 2021 and the second light-transmitting hole 2051 can effectively reduce the reflection problem caused by the second light-transmitting hole 2051, reduce the color difference between the photosensitive area 1011 and the main display area 1012 in the dark state, and improve the overall consistency of the display panel, that is, the integrated black vision effect.

[0064] Figure 2C FIG. 1 is a schematic diagram showing an optical path of a display panel provided by an embodiment of the present disclosure. 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 display panel 200 by the cover plate 207 , light leakage occurs, thereby reducing the display effect of the photosensitive area 1011 .

[0065] To ensure the display effect, the embodiment of the present disclosure further defines 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 layer 204. If the encapsulation layer 203 has more and thicker sub-encapsulation layers, the distance h is large; if the encapsulation layer 203 has fewer and thinner sub-encapsulation layers, the distance h is small. The present disclosure does not make specific limitations on this.

[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 factor is not less than Where n is the refractive index of the cover plate 207. Here, the minimum angle at which the emitted light F is totally reflected at the interface between the cover plate 207 and the air is In order to reduce the light leakage from 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 incident angle θ is the critical angle β of total reflection. When the incident angle θ is greater than β, the outgoing light F is totally reflected 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 that 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 minimum preset correction may be 0.84.

[0070] The inventors of the present disclosure have 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, the display panel 200 manufactured after the reliability condition processing has a clear boundary between the photosensitive area 1011 and the main display area 1012 at low grayscale brightness, and the edge of the photosensitive area 1011 has a higher brightness than the main display area 1012 and the interior of the photosensitive area 1011. Here, the reliability condition refers to placing 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 condition according to the product process requirements, and the present disclosure does not specifically limit this.

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

[0072] Figure 3 An optical microscopic structure diagram of a display panel provided by an embodiment of the present disclosure is shown. Figure 3 , the left side of the boundary 301 is the light-sensitive area 1011, and 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 light-sensitive area 1011 and the main display area 1012.

[0073] The distances between the multiple second light-transmitting holes 2051 and the boundary 301 are different. For example, the distance between the second light-transmitting holes 2051 near the inside of the photosensitive area 1011 and the boundary 301 is S1, and the distance between the second light-transmitting holes 2051 near the boundary of the photosensitive area 1011 and the boundary 301 is S2. In the case of using the same design size of the second light-transmitting holes, the size of the manufactured second light-transmitting holes 2051 corresponding to the distance S1 is smaller than the size of the second light-transmitting holes 2051 corresponding to the distance S2. Since the size of the second light-transmitting holes 2051 corresponding to the distance S2 is larger than the design size, at low grayscale, the outgoing light leaks out of the second light-transmitting holes 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 border of the photosensitive area 1011 is likely to be too large. In view of this, the inventors adjusted the design 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 A partial structural schematic diagram of a display panel provided by an embodiment of the present disclosure is shown below. Figure 4A The shape of the middle photosensitive area 1011 is taken as a circle, and the edge area 302 is described in detail. Figure 4A As shown, the photosensitive area 1011 includes an inner area 303 and an edge area 302 ( Figure 4A The gray area is marked in the middle. Among them, according to the direction from outside to inside ( Figure 4A 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 outside to inside is explained. For example, when the shape of the photosensitive region 1011 is a rectangle, the direction of the arrow 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 outside to inside can be the direction from the boundary to the center of the regular polygon.

[0076] In some embodiments, the position and size of the second light-transmitting hole of the light-shielding layer 205 in the photosensitive area 1011 can be controlled by a mask. Figure 4B FIG. 1 is a schematic diagram showing a photosensitive area of ​​a display panel provided by an embodiment of the present disclosure. Figure 4B As shown, the inner area 303 includes a plurality of second light-transmitting holes 3031 ( Figure 4B 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. The first region 401 includes a first pattern 4011 corresponding to the second light-transmitting holes 3021; ​​and the second region 402 includes a second pattern 4021 corresponding to the second light-transmitting holes 3031.

[0077] Since the size of the second light-transmitting hole 3021 of the edge region 302 actually obtained after exposure is larger than the size of the corresponding pattern on the mask, the embodiment of the present disclosure adjusts the size of the corresponding pattern on the mask of the edge region 302 so that the size of the second light-transmitting hole 3021 of the edge region 302 actually obtained after exposure is substantially the same as the size of the second light-transmitting hole 3031 of 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 substantially 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 excessive 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 to 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, after exposure, the sizes of the second light-transmitting hole 3021 and the second light-transmitting hole 3031 are substantially the same. It should be noted that "substantially the same" and "close" refer to the acceptable deviation range for a specific value determined by a person of ordinary skill in the art, for example, less than 5%, less than 10%, etc.

[0079] In some embodiments, the closer the first pattern 4011 is to the second region 402 (correspondingly, the closer the second light-transmitting hole 3021 is to the inner region 303), the larger its size is. The exposure process has a gradual effect on the size of the actual second light-transmitting hole. Such a design can better adapt to the exposure process, ensure that the second light-transmitting hole in the edge region 302 away from the inner region 303 does not leak light, and improve the display effect of the display panel in a low grayscale state.

[0080] Figure 4C A schematic diagram of a photosensitive area of ​​another display panel provided by an embodiment of the present disclosure is shown. Figure 4C , the photosensitive area 1011 includes an inner area 303 and an edge area 302 ( Figure 4C The inner area 303 includes a plurality of second light-transmitting holes 3031 ( Figure 4CThe edge region 302 includes a plurality of second light-transmitting holes 3021. The size of the second light-transmitting holes 3021 is smaller than the second light-transmitting holes 3031. By adopting such a technology, the reflectivity of the second light-transmitting holes 3021 in the edge region 302 can be reduced and light leakage can be avoided while meeting the requirements of ambient light perception, thereby improving the integrated black viewing effect of the entire display panel in a dark state and avoiding the obvious boundary problem between the photosensitive region 1011 and the main display region 1012 at low grayscale.

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

[0082] Next, the present disclosure embodiment combines Figure 5A and Figure 5B The arrangement of the light-transmitting holes and sub-pixels in the photosensitive area is exemplified.

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

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

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

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

[0087] Next, the first missing corner rectangle 5021 and the second missing corner rectangle 5022 can be arranged in multiple ways. Exemplarily, the first missing corner rectangle 5021 and the second missing corner rectangle 5022 are arranged alternately in at least one row (x-axis direction). Exemplarily, the first missing corner rectangle 5021 and the second missing corner rectangle 5022 are arranged alternately in at least one column (y-axis direction). By adopting the staggered arrangement, the space is fully utilized in the limited area of ​​the display panel where the light-transmitting holes are set, and in the case of missing corners, it is helpful for the surrounding ambient light to enter the light-transmitting holes in a balanced manner.

[0088] See also Figure 5A , the positional relationship between the sub-pixel 501 and the light-transmitting hole 502 is illustrated as follows: in the x-axis direction, the green sub-pixel 5011 and the light-transmitting hole 502 are arranged alternately. For example, two green sub-pixels 5011 are provided with one light-transmitting hole 502, and one green sub-pixel 5011 is provided between the two light-transmitting holes 502. Next, in the y-axis direction, a red sub-pixel 5012 and a blue sub-pixel 5013 are provided on both sides of the light-transmitting hole 502, respectively. 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 cyclically.

[0089] Next, combine Figure 5B The sizes of the first corner-cut rectangle 5021 and the second corner-cut rectangle 5022 are described.

[0090] Figure 5B Show Figure 5A Enlarged view of the dotted box B. 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, Figure 5B As shown, the lengths of the sides of the first corner-less rectangle 5021 are represented by b 1 , b 2 、c 2 Indicates that the lengths of the sides of the second missing corner rectangle 5022 are expressed as a 1 、a 2 、c 1 Indicates. For example, b 1 , b 2 、c 2 、a 1 、a 2 、c 1 For specific values, please refer to Table 1.

[0092] Table 1

[0093] Item <![CDATA[a 1 ]]> <![CDATA[a 2 ]]> <![CDATA[b 1 ]]> <![CDATA[b 2 ]]> <![CDATA[c 1 ]]> <![CDATA[c 2 ]]> The second light hole 12.22μm 8.59μm 12.22μm 8.78μm 8.59μm 6.72μm The first light hole 14.42μm 10.79μm 14.42μm 10.98μm 10.79μm 8.92μm

[0094] The display panel having the arrangement of the above-mentioned embodiments and the parameters in Table 1 can have excellent integrity in a dark state, no light leakage at the edge of the photosensitive area in a low grayscale, good display effect, and can meet the requirements of ambient light perception.

[0095] Some embodiments of the present disclosure also provide a method for manufacturing a display panel. Figure 1A The display panel includes a display area 101 and a photosensitive area 1011 . Figure 6 FIG. 1 is a flow chart showing a method for manufacturing a display panel provided by an embodiment of the present disclosure. Figure 6 As shown, the manufacturing method comprises:

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

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

[0098] S606 : forming 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 located within the range of the orthographic projection of the display area 101 on the substrate; Figure 2A , the orthographic projection of at least one second light-transmitting hole 2051 on the substrate 201 is located within the range of the orthographic projection of a first light-transmitting hole 2021 on the substrate 201 .

[0100] In some embodiments, S606 includes: Figure 4B As shown, the light shielding layer is formed by exposure and development using a mask 400; wherein the first size of the second light-transmitting hole pattern 4011 of the mask 400 corresponding to the edge of the photosensitive area is smaller than the second size 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 above embodiments, and has the beneficial effects of the corresponding embodiment, which will not be described in detail here.

[0102] The present disclosure provides a display panel, including a display area 101 and a photosensitive area 1011 (see Figure 1A ).like Figure 2A As shown, the display panel includes:

[0103] Substrate 201;

[0104] A pixel defining layer 202 is 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 defining layer 202; the light shielding layer 205 located in the photosensitive area includes a plurality of second light-transmitting holes 2051; wherein,

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

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

[0108] In some embodiments, Figure 2C As shown, the pixel defining layer 202 includes a plurality of first pixel openings 2022; the orthographic projection of the second light-transmitting hole 2051 on the substrate 201 and the orthographic projection of the first pixel opening 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 the adjacent first pixel opening 2022 on the substrate is not less than the product of a second distance h between the light-shielding layer 205 and the pixel defining layer 202 and a preset correction coefficient.

[0110] In some embodiments, it also includes:

[0111] The cover plate 207 is 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, see Figure 4B The 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 the second size of the mask pattern 4021 corresponding to the second light-transmitting hole 3031 located inside 303 of the photosensitive area.

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

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

[0117] In some embodiments, see 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 303 of the photosensitive area.

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

[0119] In some embodiments, see Figure 4A In the direction from the outside to the inside of the photosensitive area (arrow direction), the length d3 of the edge occupies 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 missing-corner rectangle or a regular polygon.

[0121] In some embodiments, see Figure 5A , the plurality of second light-transmitting holes are selected from the first corner-less rectangle 5021 or the second corner-less rectangle 5022;

[0122] A plurality of the second light-transmitting holes are arranged in a plurality of rows and columns; wherein, in at least one row and / or at least one column, the first corner-less rectangles 5021 and the second corner-less rectangles 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 multiple green pixel 5011 openings are arranged into multiple rows and 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 skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present disclosure (including the claims) is limited to these examples. Based on the concept of the present disclosure, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present disclosure as described above, which are not provided in detail for the sake of simplicity.

[0126] Although the present disclosure has been described in conjunction with specific embodiments of the present disclosure, many replacements, modifications and variations of these embodiments will be apparent to those skilled in the art from the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) may use the embodiments discussed.

[0127] The embodiments of the present disclosure are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present disclosure should be included in the scope of protection of the present disclosure.

Claims

1. A display panel, characterized in that: The display panel comprises a display area and a photosensitive area; the display panel comprises: substrate; A pixel defining layer is disposed on the substrate; the pixel defining layer located in the photosensitive area comprises a plurality of first light-transmitting holes; A light shielding layer is disposed on the pixel definition layer; 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 located 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 located 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 definition 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 have no overlap; and A first distance between the boundary of the orthographic projection of the substrate and the boundary of the orthographic projection of the 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, characterized in that: Also includes: The cover plate is arranged on the light shielding layer; the preset correction coefficient is not less than 1 / ;in, n is the refractive index of the cover plate.

4. The display panel according to claim 1, characterized in that: The light shielding layer includes a plurality of second pixel openings; A distance between a boundary of an orthographic projection of the second light-transmitting hole on the substrate and a boundary of an 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 size of the mask pattern corresponding to the second light-transmitting hole located at the edge of the photosensitive area is smaller than a second size of the mask pattern corresponding to the second light-transmitting hole located inside the photosensitive area.

6. The display panel according to claim 5, characterized in that: The closer the edge of the photosensitive area is to the inside, the larger the first size of the mask pattern corresponding to the second light-transmitting hole is.

7. The display panel according to claim 5, characterized in that: The difference between the first size and the second size is 1.0-2.0 μm.

8. The display panel according to claim 1, characterized in that: The size of the second light-transmitting hole located at the edge of the photosensitive area is smaller than the size of the second light-transmitting hole located inside the photosensitive area.

9. The display panel according to claim 8, characterized in that: The second light-transmitting holes at the edge of the photosensitive area have larger dimensions as they are closer to the interior.

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 missing-corner rectangle or a regular polygon.

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

13. The display panel according to claim 12, characterized in that: 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 multiple green pixel openings are arranged in multiple rows and 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 holes, the red pixel openings and the blue pixel openings are respectively arranged on both sides of the second light-transmitting holes.

14. A display device, characterized in that: include: The display panel according to any one of claims 1 to 13, wherein the display panel comprises a light-emitting side and a non-light-emitting side arranged opposite to each other; The photosensitive device is arranged on the non-light-emitting side of the display panel.

Images