Display panel and display device

Abstract

The application discloses a display panel and a display device. The display panel comprises a display substrate, an array layer and a light-emitting unit arranged on one side of the array layer; and a filter layer arranged on the light-emitting side of the display substrate, wherein the filter layer comprises a color resistance block and a light shielding block, the color resistance block covers the light-emitting unit in the orthographic projection of the display substrate, the light shielding block in the orthographic projection of the display substrate does not overlap with the light-emitting unit in the orthographic projection of the display substrate, a light-transmitting structure is arranged in the light shielding block, and at least one side of the light-transmitting structure is covered by the light shielding block. The technical scheme provided in the application improves the light transmittance of the light shielding block in the filter layer, and thus the display panel and the under-screen fingerprint technology can be combined.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of semiconductor technology, and particularly relate to a display panel and a display device. BACKGROUND

[0002] With the development of display technology, the polarizing plate of a traditional display panel can be replaced by a color film substrate. The color resistance blocks in the color film substrate can improve the light output rate of the light emitting unit of the corresponding light emitting color, thereby reducing the power consumption of the display panel and improving the service life of the display panel.

[0003] However, while improving the light output rate of the light emitting unit, the existing display panel has poor light transmittance due to the existence of the light shielding block in the color film substrate, thereby causing the existing display panel to be unable to be combined with the under-screen fingerprint technology. SUMMARY

[0004] Therefore, embodiments of the present application provide a display panel and a display device to solve the problem that the existing display panel has poor light transmittance due to the existence of the light shielding block.

[0005] Embodiments of the present application provide a display panel, comprising:

[0006] a display substrate comprising an array layer and a light emitting unit arranged on one side of the array layer;

[0007] a filter layer arranged on the light emitting side of the display substrate, the filter layer comprising a color resistance block and a light shielding block, the color resistance block covering the light emitting unit in the orthographic projection of the display substrate, the light shielding block having no overlap with the light emitting unit in the orthographic projection of the display substrate, the light shielding block being provided with a light transmission structure, and at least one side of the light transmission structure being covered by the light shielding block.

[0008] The technical solution sets the light transmission structure in the light shielding block to form a honeycomb-shaped light shielding block, increases the light transmittance of the light shielding block under the condition that the display panel meets the preset reflection intensity and the preset contrast ratio, and the external ambient light or the fingerprint reflection light can be emitted from the light emitting unit through the light transmission structure. Therefore, the photosensitive device located on the side of the display substrate of the display panel away from the filter layer can sense the light, so that the display panel and the under-screen fingerprint technology can be combined. In addition, the self-emission of the light emitting unit can be emitted through the light transmission structure of the light shielding block at an oblique viewing angle, so that the brightness of the display panel in the large viewing angle direction is improved, the problem of large viewing angle color deviation of the display panel is improved, and the user experience is improved.

[0009] Optionally, the thickness of the light transmission structure is less than the thickness of the light shielding block.

[0010] The technical scheme increases the light transmittance of the light shielding block under the condition that the display panel meets the preset reflection intensity and the preset contrast ratio, external environment light or fingerprint reflection light can be emitted from between the organic light emitting units through the light transmission structure, so that the photosensitive device located on the display substrate of the light emitting panel away from the light filtering layer side can sense the light, thereby realizing the combination of the light emitting panel and the under-screen fingerprint technology. And the self-luminous of the light emitting unit can be emitted at an oblique viewing angle through the light transmission structure of the light shielding block, so that the brightness of the display panel in the large viewing angle direction is improved, the problem of large viewing angle deviation of the display panel is improved, and the user experience is improved.

[0011] Optionally, the light transmission structure comprises:

[0012] The first light transmission structure is located in the groove on the side of the light shielding block close to the display substrate;

[0013] And / or,

[0014] The second light transmission structure is located in the groove on the side of the light shielding block away from the display substrate.

[0015] In the technical scheme, the first light transmission structure extends from the inside of the light shielding block to the first surface close to the display substrate, and the second light transmission structure extends from the inside of the light shielding block to the second surface away from the display substrate, which is equivalent to reducing the thickness of the black matrix of the light shielding block for blocking the environment light and the light reflected by the cathode of the light emitting unit. Thus, the light transmittance of the light shielding block is increased under the condition that the display panel meets the preset reflection intensity and the preset contrast ratio, external environment light or fingerprint reflection light can be emitted from between the light emitting units through the light transmission structure, so that the photosensitive device located on the display substrate of the display panel away from the light filtering layer side can sense the light, thereby realizing the combination of the display panel and the under-screen fingerprint technology. And the self-luminous of the light emitting unit can be emitted at an oblique viewing angle through the light transmission structure of the light shielding block, so that the brightness of the organic light emitting display panel in the large viewing angle direction is improved, the problem of large viewing angle deviation of the organic light emitting display panel is improved, and the user experience is improved.

[0016] Preferably, the orthographic projection of the first light transmission structure on the display substrate does not overlap with the orthographic projection of the second light transmission structure on the display substrate.

[0017] In the technical scheme, the first light transmission structure and the second light transmission structure are staggered arranged in the light shielding block, which increases the uniformity of the external environment light or the fingerprint reflection light emitted from between the light emitting units through the light transmission structure, thereby improving the uniformity of the light sensed by the photosensitive device located on the display substrate away from the light filtering layer side, thereby more conducive to realizing the good combination of the display panel and the under-screen fingerprint technology.

[0018] Preferably, the shape of the orthographic projection of the first light-transmissive structure on the display substrate is the same as the shape of the orthographic projection of the second light-transmissive structure on the display substrate.

[0019] In the technical solution, the first light-transmissive structure and the second light-transmissive structure on the display substrate have the same shape of orthographic projection, which increases the uniformity of the ambient light or the reflected light of the fingerprint that can pass through the light-transmissive structure and be emitted from between the light-emitting units, and thus improves the uniformity of the light that can be sensed by the photosensitive device on the side of the display substrate away from the filter layer, thereby facilitating the good combination of the display panel and the under-screen fingerprint technology.

[0020] Optionally, there is a gap between two adjacent first light-transmissive structures in the first direction, and / or there is a gap between two adjacent second light-transmissive structures in the first direction; wherein the first direction is perpendicular to the thickness direction of the display panel.

[0021] In the plane perpendicular to the thickness direction of the display panel, there is a gap between two adjacent first light-transmissive structures, and / or there is a gap between two adjacent second light-transmissive structures, which can ensure that the light-blocking block has a certain light transmittance, and the light-blocking block can also block the ambient light and the light reflected by the cathode of the organic light-emitting unit, thereby reducing the overall reflectivity of the display panel and further meeting the preset contrast of the display panel.

[0022] Preferably, the gap length between two adjacent first light-transmissive structures in the first direction is related to the size of the orthographic projection of the second light-transmissive structure on the display substrate, and / or the gap length between two adjacent second light-transmissive structures in the first direction is related to the size of the orthographic projection of the first light-transmissive structure on the display substrate.

[0023] The technical solution can set the gap length between two adjacent first light-transmissive structures in the first direction according to the orthographic projection of the second light-transmissive structure on the display substrate, and set the gap length between two adjacent second light-transmissive structures in the first direction according to the orthographic projection of the first light-transmissive structure on the display substrate, to realize that there is a gap between two adjacent first light-transmissive structures and / or there is a gap between two adjacent second light-transmissive structures, so as to ensure that the light-blocking block has a certain light transmittance, and the light-blocking block can also block the ambient light and the light reflected by the cathode of the organic light-emitting unit, thereby reducing the overall reflectivity of the display panel and further meeting the preset contrast of the display panel.

[0024] Optionally, the center points of the orthographic projections of the at least three first light-transmissive structures on the display substrate are connected to form a first virtual polygon, and the orthographic projection of the second light-transmissive structure on the display substrate is located at the center point of the first virtual polygon.

[0025] A second virtual polygon is formed by the center points of the orthographic projections of the at least three second light-transmitting structures on the display substrate, and the orthographic projection of the first light-transmitting structure on the display substrate is located at the center point of the second virtual polygon.

[0026] The technical solution reduces the spacing distance between the light-transmitting structures, increases the uniformity of the ambient light or the reflected light of the fingerprint that can pass through the light-transmitting structures and be emitted from between the light-emitting units, and thus improves the uniformity of the light that can be sensed by the photosensitive device on the side of the display substrate of the display panel away from the light filter, thereby facilitating the good combination of the display panel and the under-screen fingerprint technology.

[0027] Optionally, the area of the side of the first light-transmitting structure close to the surface of the light-blocking block is greater than the area of the side of the first light-transmitting structure away from the surface of the light-blocking block.

[0028] The area of the side of the second light-transmitting structure close to the surface of the light-blocking block is greater than the area of the side of the second light-transmitting structure away from the surface of the light-blocking block.

[0029] The technical solution is that the area of the first light-transmitting structure and the second light-transmitting structure close to the surface of the light-blocking block is greater than the area close to the inside of the light-blocking block, which can improve the light transmittance of the display panel while reducing the area of the first light-transmitting structure and the second light-transmitting structure close to the inside of the light-blocking block, thereby reducing the area of the groove in the light-blocking block, so that the light-blocking block has sufficient mechanical support strength and structural stability.

[0030] Optionally, the light-transmitting structure includes a third light-transmitting structure, the third light-transmitting structure is located in the inside of the light-blocking block, and the side of the light-blocking block away from the display substrate and the side of the light-blocking block close to the display substrate both cover the third light-transmitting structure.

[0031] The technical solution adds the third light-transmitting structure, increases the number of light-transmitting structures, and the third light-transmitting structure is located in the inside of the light-blocking block, which reduces the propagation distance of the light in the light-blocking block and thus improves the light transmittance of the light-blocking block, thereby facilitating the good combination of the display panel and the under-screen fingerprint technology.

[0032] Optionally, the light absorption coefficient of the light-transmitting structure is less than the light absorption coefficient of the light-blocking block.

[0033] The light transmission structure has a light absorption coefficient less than that of the light shielding block, thereby increasing the light transmittance of the light shielding block while ensuring that the display panel meets the preset reflection intensity and the preset contrast ratio, the external ambient light or the fingerprint reflection light can be emitted from between the light emitting units through the light transmission structure, so that the photosensitive device on the display substrate of the display panel away from the filter layer side can sense the light, thereby realizing the combination of the display panel and the under-screen fingerprint technology. And the self-luminous light of the light emitting unit can be emitted at an oblique viewing angle through the light transmission structure of the light shielding block, so that the brightness of the display panel in the large viewing angle direction is improved, the problem of large viewing angle deviation of the display panel is improved, and the user experience is improved.

[0034] Optionally, the display panel further comprises a transparent substrate, and the transparent substrate is located between the filter layer and the display substrate.

[0035] Preferably, the transparent substrate comprises a transparent organic substrate.

[0036] In the technical scheme, the transparent substrate is preferably a transparent organic substrate, which is used to support the filter layer. When the light emitting unit emits light through the color resistance block, the light passes through the transparent substrate with good light transmission and the color resistance block with high out-of-band rate, thereby increasing the light emission rate of the light emitting unit. In the process of external ambient light or fingerprint reflection light reaching the photosensitive device on the display substrate away from the filter layer side through the light emitting unit, the external ambient light or the fingerprint reflection light can be emitted from between the light emitting units through the light transmission structure and the transparent substrate. Thus, the photosensitive device on the display substrate of the display panel away from the filter layer side can sense the light, thereby realizing the combination of the display panel and the under-screen fingerprint technology. And the self-luminous light of the light emitting unit can be emitted at an oblique viewing angle through the transparent substrate and the light transmission structure of the light shielding block, so that the brightness of the display panel in the large viewing angle direction is improved, the problem of large viewing angle deviation of the display panel is improved, and the user experience is improved.

[0037] The display device provided by the embodiment of the present application comprises any display panel provided by the embodiment of the present application.

[0038] In the technical scheme, the display device comprises any display panel provided by the embodiment of the present application, the display panel is provided with the light transmission structure in the light shielding block to form a honeycomb-shaped light shielding block, thereby increasing the light transmittance of the light shielding block while ensuring that the display panel meets the preset reflection intensity and the preset contrast ratio, the external ambient light or the fingerprint reflection light can be emitted from between the light emitting units through the light transmission structure, so that the photosensitive device on the display substrate of the display panel away from the filter layer side can sense the light, thereby realizing the combination of the display panel and the under-screen fingerprint technology.

[0039] The technical scheme provided by the embodiment of the present application replaces the polaroid of the traditional display panel with the filter layer, wherein the color resistance block is used to improve the light emitting rate of the light emitting unit. The light shielding block blocks the ambient light and the light reflected by the cathode of the organic light emitting unit, thereby reducing the overall reflection intensity of the display panel, and further improving the contrast ratio of the display panel. By arranging the light transmission structure in the light shielding block to form a honeycomb-shaped light shielding block, the light transmission of the light shielding block is increased under the condition that the display panel meets the preset reflection intensity and the preset contrast ratio. The external ambient light or fingerprint reflected light can be emitted from between the light emitting units through the light transmission structure, so that the photosensitive device located on the display substrate of the display panel away from the filter layer side can sense the light, thereby realizing the combination of the display panel and the under-screen fingerprint technology. In addition, the self-emission of the light emitting unit can be emitted through the light transmission structure of the light shielding block at an oblique viewing angle, so that the brightness of the display panel in the large viewing angle direction is improved, the problem of large viewing angle deviation of the display panel is improved, and the user experience is improved. BRIEF DESCRIPTION OF DRAWINGS

[0040] Figure 1 FIG. 1 is a structural schematic diagram of a display panel in the prior art;

[0041] Figure 2 FIG. 2 is a structural schematic diagram of a display panel provided by an embodiment of the present application;

[0042] Figure 3 FIG. 3 is a structural schematic diagram of another display panel provided by an embodiment of the present application;

[0043] Figure 4 FIG. 4 is a structural schematic diagram of still another display panel provided by an embodiment of the present application;

[0044] Figure 5 FIG. 5 is a structural schematic diagram of a light shielding block and the front projection of the first light transmission structure and the second light transmission structure in the display substrate provided by an embodiment of the present application;

[0045] Figure 6 FIG. 6 is a structural schematic diagram of still another display panel provided by an embodiment of the present application;

[0046] Figure 7 FIG. 7 is a structural schematic diagram of a display device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0047] The present application will be further described below in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application. In addition, it should be noted that, for the convenience of description, only the parts related to the present application are shown in the drawings, but not all the structures.

[0048] As described in the above background, in the current display panel, the light filtering layer replaces the original polarizer, which improves the light output rate of the light emitting unit, but the current display panel has poor light transmittance due to the existence of the light shielding block, which further causes the current display panel to be unable to be combined with the under-screen fingerprint technology. Figure 1 FIG. 1 is a structural schematic diagram of a display panel in the prior art. Figure 1 The inventors have found, through careful research, that the current display panel includes a display substrate 01, the display substrate 01 includes an array layer 1 and a pixel definition layer 2, the pixel definition layer 2 is located above the array layer 1, the pixel definition layer 2 is provided with at least one opening structure 2a, and a light emitting unit 3 is located in the opening structure 2a. A light filtering layer 4 is located on a side of the light emitting unit 3 away from the display substrate 01, the light filtering layer 4 includes a color resistance block 4a and a light shielding block 4b, the color resistance block 4a covers the orthographic projection of the light emitting unit 3 on the display substrate 01, and the orthographic projection of the light shielding block 4b on the display substrate 01 and the orthographic projection of the light emitting unit 3 on the display substrate 01 do not overlap. The color resistance block 4a, for example, uses a color filter film to improve the light output rate of the light emitting unit 3 of the corresponding color. The light shielding block 4b can block ambient light and light reflected by the cathode of the light emitting unit 3, thereby reducing the overall reflection intensity of the display panel and improving the contrast of the display panel. However, the light shielding block 4b blocks ambient light or fingerprint reflected light from entering the display panel, which results in poor light transmittance of the display panel. When the display panel is combined with the under-screen fingerprint technology, the fingerprint reflected light cannot pass through the display panel to reach the photosensitive device used for fingerprint recognition, which causes the current display panel to be unable to be combined with the under-screen fingerprint technology. In addition, while the light shielding block 4b blocks ambient light or fingerprint reflected light from entering the display panel, the light shielding block 4b also blocks the self-light of the light emitting unit 3 at an oblique viewing angle, which causes serious brightness attenuation of the display panel in the large viewing angle direction and a large viewing angle deviation problem, resulting in poor user experience. It should be noted that the display substrate 01 also includes an encapsulation layer 5 for protecting the light emitting unit 3.

[0049] To solve the above technical problems, the embodiments of the present application provide the following technical solutions:

[0050] Figure 2 FIG. 1 is a structural schematic diagram of a display panel in the prior art. Figure 3 FIG. 2 is a structural schematic diagram of another display panel provided by the embodiments of the present application. Figure 4 FIG. 3 is a structural schematic diagram of another display panel provided by the embodiments of the present application. Figures 2-4The display panel comprises a display substrate 100, an array layer 001 and a light-emitting unit 003 arranged on one side of the array layer 001; and a filter layer 004 arranged on the light-emitting side of the display substrate 100, wherein the filter layer 004 comprises a color resistance block 41 and a light shielding block 42, the color resistance block 41 covers the light-emitting unit 003 in the orthographic projection of the display substrate 100, the light shielding block 42 does not overlap with the light-emitting unit 003 in the orthographic projection of the display substrate 100, a light-transmitting structure 420 is arranged in the light shielding block 42, and at least one side of the light-transmitting structure 420 is covered by the light shielding block 42. Exemplarily, Figure 2 and Figure 3 In the display panel, the light-transmitting structure 420 comprises a first light-transmitting structure 420a and a second light-transmitting structure 420b on the surface of the light shielding block 42. Figure 4 In the display panel, the light-transmitting structure 420 comprises a third light-transmitting structure 420c inside the light shielding block 42.

[0051] Exemplarily, Figures 2-4 In the display panel, a pixel definition layer 002 is further shown, the pixel definition layer 002 is provided with at least one opening structure 20a, the light-emitting unit 003 is arranged in the opening structure 20a, and the light-emitting unit 003 and the opening structure 20a are arranged one by one. The array layer 001 further comprises a thin film transistor layer for providing a driving signal to the anode of the light-emitting unit 003. The pixel definition layer 002 and the filter layer 004 further comprise an encapsulation layer 005 for protecting the light-emitting unit 003. In the embodiment, the light-emitting unit 003 can be an organic light-emitting unit or a quantum dot light-emitting unit.

[0052] It should be noted that, Figure 2 and Figure 3 In the display panel, the first light-transmitting structure 420a and the second light-transmitting structure 420b are different in that the first light-transmitting structure 420a extends from the inside of the light shielding block 42 to the first surface of the light shielding block 42 close to the display substrate 100, and the second light-transmitting structure 420b extends from the inside of the light shielding block 42 to the second surface of the light shielding block 42 away from the display substrate 100. Figure 4 The third light-transmitting structure 420c in the display panel is arranged inside the filter layer 004.

[0053] Exemplarily, Figure 2 and Figure 4 In the display panel, the color resistance block 41 and the light shielding block 42 are arranged on the same layer. Figure 3 In the display panel, the display panel further comprises a touch substrate 007, the color resistance block 41 and the light shielding block 42 are arranged on two opposite surfaces of the touch substrate 007, thereby realizing an organic light-emitting display panel with a touch function.

[0054] Exemplarily, in the embodiment, the light emitting unit 003 includes a red light emitting unit 30a, a green light emitting unit 30b and a blue light emitting unit 30c. Correspondingly, the color resistance block 41 includes a red light color resistance block 41a, a green light color resistance block 41b and a blue light color resistance block 41c. The red light color resistance block 41a is, for example, a red light filter film for improving the light extraction efficiency of the red light emitting unit 30a. The green light color resistance block 41b is, for example, a green light filter film for improving the light extraction efficiency of the green light emitting unit 30b. The blue light color resistance block 41c is, for example, a blue light filter film for improving the light extraction efficiency of the blue light emitting unit 30c.

[0055] The light shielding block 42 blocks ambient light and light reflected by the cathode of the light emitting unit 003 by using a black matrix (BM), thereby reducing the overall reflection intensity of the display panel and improving the contrast of the display panel. As known, the light emitting unit 003 includes an anode, a light emitting device and a cathode in sequence. Since the anode of the light emitting unit 003 is opaque, external ambient light or fingerprint reflected light cannot pass through the light emitting unit 003 to reach the photosensitive device on the side of the display substrate 100 away from the filter layer 004. In the embodiment, by providing a light transmission structure 420 in the light shielding block 42, the light transmission of the light shielding block 42 is increased while ensuring that the display panel meets the preset reflection intensity and the preset contrast. External ambient light or fingerprint reflected light can pass through the light transmission structure 420 from between the light emitting units 003, so that the photosensitive device on the side of the display substrate 100 of the display panel away from the filter layer 004 can sense light, thereby realizing under-screen optical fingerprint recognition. In addition, the self-luminous of the light emitting unit 003 can pass through the light transmission structure 420 of the light shielding block 42 and be emitted at an oblique viewing angle, so that the brightness of the display panel in the large viewing angle direction is improved, the problem of large viewing angle color deviation of the display panel is improved, and the user experience is improved.

[0056] The technical scheme provided by the embodiment replaces the polaroid of the traditional display panel with the filter layer 004, wherein the color resistance block 41 is used to improve the light emitting rate of the light emitting unit 003. The light blocking block 42 blocks ambient light and light reflected by the cathode of the organic light emitting unit 003, thereby reducing the overall reflection intensity of the display panel, and further improving the contrast of the display panel. By arranging the light transmission structure 420 in the light blocking block 42 to form a honeycomb-shaped light blocking block 42, the light transmission of the light blocking block 42 is increased under the condition that the display panel meets the preset reflection intensity and the preset contrast, the external ambient light or the reflected light of the fingerprint can be emitted from between the light emitting units 003 through the light transmission structure 420, so that the photosensitive device located on the display substrate 100 of the display panel away from the filter layer 004 can sense the light, thereby realizing the combination of the display panel and the under-screen fingerprint technology. The self-luminous light of the light emitting unit 003 can be emitted at an oblique viewing angle through the light transmission structure 420 of the light blocking block 42, so that the brightness of the display panel in the large viewing angle direction is improved, the problem of large viewing angle deviation of the display panel is improved, and the user experience is improved.

[0057] Optionally, referring to Figures 2-4 The thickness of the light transmission structure 420 is less than the thickness of the light blocking block 42.

[0058] Specifically, the thickness of the light transmission structure 420 is less than the thickness of the light blocking block 42, so that the light transmission of the light blocking block 42 is increased under the condition that the display panel meets the preset reflection intensity and the preset contrast, the external ambient light or the reflected light of the fingerprint can be emitted from between the light emitting units 003 through the light transmission structure 420, so that the photosensitive device located on the display substrate 100 of the display panel away from the filter layer 004 can sense the light, thereby realizing the combination of the display panel and the under-screen fingerprint technology. The self-luminous light of the light emitting unit 003 can be emitted at an oblique viewing angle through the light transmission structure 420 of the light blocking block 42, so that the brightness of the display panel in the large viewing angle direction is improved, the problem of large viewing angle deviation of the display panel is improved, and the user experience is improved.

[0059] Optionally, the light transmission structure comprises: a first light transmission structure located in the groove on the side of the light blocking block close to the display substrate; and / or a second light transmission structure located in the groove on the side of the light blocking block away from the display substrate.

[0060] Exemplarily, Figure 2 and Figure 3The first light-transmitting structure 420a is located in the groove on the side of the light-blocking block 42 close to the display substrate 100, and the second light-transmitting structure 420b is located in the groove on the side of the light-blocking block 42 away from the display substrate 100. The process of forming the first light-transmitting structure 420a and the second light-transmitting structure 420b in the light-blocking block 42 is as follows: the first light-transmitting structure 420a is formed on the display substrate 100, and then a layer of black matrix (BM) is coated on the display substrate 100. In this way, the first light-transmitting structure 420a is formed in the BM. After the BM is formed, the groove is first dug on the BM, and then the second light-transmitting structure 420b is formed in the groove. When the groove is dug on the top of the BM, the unwanted material can be removed by the photoetching and etching process, or the different light transmittances can be directly set in different areas by using the Halftone Mask, and then the second light-transmitting structure 420b is formed by exposure, development and etching. The thickness of the first light-transmitting structure 420a is equal to the depth of the groove, and the thickness of the second light-transmitting structure 420b is equal to the depth of the groove.

[0061] Specifically, the first light-transmitting structure 420a extends from the inside of the light-blocking block 42 to the first surface close to the display substrate 100, and the second light-transmitting structure 420b extends from the inside of the light-blocking block 42 to the second surface away from the display substrate 100, which is equivalent to reducing the thickness of the black matrix of the light-blocking block 42 for blocking ambient light and the light reflected by the cathode of the light-emitting unit 003. Thus, the light transmittance of the light-blocking block 42 is increased while ensuring that the display panel meets the preset reflection intensity and the preset contrast ratio. The external ambient light or fingerprint reflected light can be emitted from between the light-emitting units 003 through the light-transmitting structure, so that the photosensitive device on the side of the display substrate 100 of the display panel away from the filter layer 004 can sense the light, thereby realizing the combination of the display panel and the under-screen fingerprint technology. In addition, the self-emission of the light-emitting unit 003 can be emitted through the light-transmitting structure of the light-blocking block 42 at the oblique viewing angle, so that the brightness of the organic light-emitting display panel in the large viewing angle direction is improved, the problem of large viewing angle deviation of the organic light-emitting display panel is improved, and the user experience is improved. Preferably, referring to Figure 2 and Figure 3 The orthographic projection of the first light-transmitting structure 420a on the display substrate 100 does not overlap with the orthographic projection of the second light-transmitting structure 420b on the display substrate 100.

[0062] The first light-transmitting structure 420a and the second light-transmitting structure 420b are staggered in the light-blocking block 42, which increases the uniformity of the external ambient light or the fingerprint reflected light that can be emitted from between the light-emitting units 003 through the light-transmitting structure 420, and further improves the uniformity of the light that can be sensed by the light-sensing device on the side of the display substrate 100 away from the light-filter layer 004, thereby facilitating the combination of the display panel and the under-screen fingerprint technology. The light emitted by the light-emitting unit 003 can be uniformly emitted at an oblique viewing angle through the light-transmitting structure of the light-blocking block 42, which uniformly improves the brightness of the display panel in the large viewing angle direction, further improves the large viewing angle problem of the light-emitting display panel, and improves the user experience.

[0063] Preferably, the shape of the orthographic projection of the first light-transmitting structure 420a on the display substrate 100 is the same as the shape of the orthographic projection of the second light-transmitting structure 420b on the display substrate 100.

[0064] Specifically, the first light-transmitting structure 420a and the second light-transmitting structure 420b have the same shape of orthographic projection on the display substrate 100, which simplifies the shape design difficulty of the first light-transmitting structure 420a and the second light-transmitting structure 420b, and increases the uniformity of the external ambient light or the fingerprint reflected light that can be emitted from between the light-emitting units 003 through the light-transmitting structure, and further improves the uniformity of the light that can be sensed by the light-sensing device on the side of the display substrate 100 away from the light-filter layer 004, thereby facilitating the combination of the display panel and the under-screen fingerprint technology. The light emitted by the light-emitting unit 003 can be uniformly emitted at an oblique viewing angle through the light-transmitting structure of the light-blocking block 42, which uniformly improves the brightness of the display panel in the large viewing angle direction, further improves the large viewing angle problem of the display panel, and improves the user experience.

[0065] Optionally, there is a gap between two first light-transmitting structures adjacent in a first direction, and / or there is a gap between two second light-transmitting structures adjacent in the first direction; wherein the first direction is perpendicular to the thickness direction of the display panel.

[0066] For example, Figure 5 The direction perpendicular to the thickness direction of the display panel is the X direction and the Y direction. Both the X direction and the Y direction can be the first direction.

[0067] For example, Figure 5 There is a gap between two first light-transmitting structures 420a adjacent in the X direction, and there is a gap between two second light-transmitting structures 420b adjacent in the X direction. There is a gap between two first light-transmitting structures 420a adjacent in the Y direction, and there is a gap between two second light-transmitting structures 420b adjacent in the Y direction.

[0068] Specifically, in the plane where the XY direction lies, there is a gap between two adjacent first light-transmitting structures 420a, and / or there is a gap between two adjacent second light-transmitting structures 420b, which can ensure that the light-shielding block 42 has a certain light transmittance, and the light-shielding block 42 can also block ambient light and light reflected by the cathode of the organic light-emitting unit 003, thereby reducing the overall reflection intensity of the display panel, and further meeting the preset contrast of the display panel.

[0069] Preferably, the gap length between two adjacent first light-transmitting structures in the first direction is related to the size of the orthographic projection of the second light-transmitting structure on the display substrate, and / or the gap length between two adjacent second light-transmitting structures in the first direction is related to the size of the orthographic projection of the first light-transmitting structure on the display substrate.

[0070] For example, referring to FIG. 4, the gap length between two adjacent first light-transmitting structures 420a in the X direction is related to the size of the orthographic projection of the second light-transmitting structure 420b on the display substrate 100, and the gap length between two adjacent second light-transmitting structures 420b in the X direction is related to the size of the orthographic projection of the first light-transmitting structure 420a on the display substrate 100. Figure 5 For example, referring to FIG. 4, the gap length between two adjacent first light-transmitting structures 420a in the X direction is related to the size of the orthographic projection of the second light-transmitting structure 420b on the display substrate 100, and the gap length between two adjacent second light-transmitting structures 420b in the X direction is related to the size of the orthographic projection of the first light-transmitting structure 420a on the display substrate 100.

[0071] For example, referring to FIG. 4, the gap length between two adjacent first light-transmitting structures 420a in the X direction is related to the size of the orthographic projection of the second light-transmitting structure 420b on the display substrate 100, and the gap length between two adjacent second light-transmitting structures 420b in the X direction is related to the size of the orthographic projection of the first light-transmitting structure 420a on the display substrate 100. Figure 5 For example, referring to FIG. 4, the gap length between two adjacent first light-transmitting structures 420a in the X direction is related to the size of the orthographic projection of the second light-transmitting structure 420b on the display substrate 100, and the gap length between two adjacent second light-transmitting structures 420b in the X direction is related to the size of the orthographic projection of the first light-transmitting structure 420a on the display substrate 100.

[0072] Specifically, the interval length between two adjacent first light-transmitting structures 420a in the first direction can be set according to the orthogonal projection of the second light-transmitting structure 420b on the display substrate 100, and the interval length between two adjacent second light-transmitting structures 420b in the first direction can be set according to the orthogonal projection of the first light-transmitting structure 420a on the display substrate 100. This ensures that in the plane of the XY direction, there is a gap between two adjacent first light-transmitting structures 420a and / or between two adjacent second light-transmitting structures 420b. This ensures that while the light-shielding block 42 has a certain degree of light transmittance, the light-shielding block 42 can also block ambient light and the light reflected from the cathode of the organic light-emitting unit 003, thereby reducing the overall reflection intensity of the display panel and thus meeting the preset contrast ratio of the display panel.

[0073] Optionally, a first virtual polygon is formed by connecting the center points of the orthographic projections of at least three first light-transmitting structures on the display substrate, and the orthographic projection of the second light-transmitting structure on the display substrate is located at the center point of the first virtual polygon; a second virtual polygon is formed by connecting the center points of the orthographic projections of at least three second light-transmitting structures on the display substrate, and the orthographic projection of the first light-transmitting structure on the display substrate is located at the center point of the second virtual polygon.

[0074] Optionally, the first and second virtual polygons can be regular polygons, such as equilateral triangles, squares, pentagons, etc., or they can be non-regular polygons, such as rectangles.

[0075] For example, see Figure 5 The center points of the orthographic projections of the four first light-transmitting structures 420a on the display substrate 100 are connected to form a first virtual polygon, such as a square. The orthographic projection of the second light-transmitting structure 420b on the display substrate 100 is located at the center point of the first virtual polygon, such as a square. The center points of the orthographic projections of the four second light-transmitting structures 420b on the display substrate 100 are connected to form a second virtual polygon, such as a square. The orthographic projection of the first light-transmitting structure 420a on the display substrate 100 is located at the center point of the second virtual polygon, such as a square.

[0076] Specifically, the above technical solution reduces the spacing between the light-transmitting structures 420, increasing the uniformity of ambient light or fingerprint-reflected light emitted from between the light-emitting units 003 through the light-transmitting structures 420. This improves the uniformity of light detected by the photosensitive device on the side of the display substrate 100 away from the filter layer 004, thus facilitating a better integration of the display panel and under-display fingerprint technology. Furthermore, the self-emissive light emitted by the light-emitting units 003 can be uniformly emitted through the light-transmitting structure of the light-shielding block 42 at oblique viewing angles, resulting in a more uniform increase in brightness of the display panel at wide viewing angles. This further improves the issue of viewing angle distortion at wide viewing angles and enhances the user experience.

[0077] Optionally, referring to Figure 6 , the area of the first light-transmitting structure 420a on the side close to the surface of the light-blocking block 42 is greater than the area of the first light-transmitting structure 420a on the side away from the surface of the light-blocking block 42; and the area of the second light-transmitting structure 420b on the side close to the surface of the light-blocking block 42 is greater than the area of the second light-transmitting structure 420b on the side away from the surface of the light-blocking block 42.

[0078] Specifically, the area of the first light-transmitting structure 420a and the second light-transmitting structure 420b close to the surface of the light-blocking block 42 is greater than the area close to the inside of the light-blocking block 42, which can improve the light transmittance of the display panel while reducing the area of the first light-transmitting structure 420a and the second light-transmitting structure 420b close to the inside of the light-blocking block 42, thereby reducing the area of the groove inside the light-blocking block 42, so that the light-blocking block 42 has sufficient mechanical support strength and structural stability.

[0079] Optionally, referring to Figure 4 and Figure 6 , the light-transmitting structure 420 includes a third light-transmitting structure 420c, the third light-transmitting structure 420c is located inside the light-blocking block 42, and the side of the light-blocking block 42 away from the display substrate 100 and the side of the light-blocking block 42 close to the display substrate 100 both cover the third light-transmitting structure 420c.

[0080] Specifically, the third light-transmitting structure 420c is added, the number of light-transmitting structures is increased, and the third light-transmitting structure 420c is located inside the light-blocking block 42, which reduces the propagation distance of light in the light-blocking block 42, thereby improving the light transmittance of the light-blocking block 42, which can be more conducive to the good combination of the display panel and the under-screen fingerprint technology. The self-luminous of the light-emitting unit 003 can be uniformly emitted through the light-transmitting structure of the light-blocking block 42 at the oblique viewing angle, so that the brightness of the display panel in the large viewing angle direction is uniformly improved, further improving the large viewing angle problem of the display panel and improving the user experience.

[0081] Optionally, the shape of the orthographic projection of the third light-transmitting structure 420c on the display substrate 100 includes a circle, an ellipse, and a polygon. The polygon can be a regular polygon or an irregular polygon. The third light-transmitting structure 420c is uniformly distributed, thereby improving the uniformity of the light that can be sensed by the photosensitive device on the side of the display substrate 100 away from the light filter layer 004, which can be more conducive to the good combination of the display panel and the under-screen fingerprint technology. The self-luminous of the light-emitting unit 003 can be uniformly emitted through the light-transmitting structure of the light-blocking block 42 at the oblique viewing angle, so that the brightness of the display panel in the large viewing angle direction is uniformly improved, further improving the large viewing angle problem of the display panel and improving the user experience.

[0082] For example, the third light-transmitting structure 420c is prepared as follows:

[0083] The first preparation method is as follows: after forming the BM with a certain thickness, the third light-transmitting structure 420c is formed on the BM, for example, the third light-transmitting structure 420c is formed on the BM by printing, or the third light-transmitting structure 420c is formed on the BM by coating, exposure and development; then, the remaining part of the BM is formed on the third light-transmitting structure 420c. In this way, the third light-transmitting structure 420c is formed inside the BM.

[0084] The second preparation method is as follows: after forming the BM, the third light-transmitting structure 420c is diffused and penetrated into the inside of the BM by ion implantation.

[0085] Optionally, the material of the third light-transmitting structure 420c can be an organic material or an inorganic material, for example, the organic material is a commonly used PLN or the like, and the inorganic material is P-si, SiN or the like.

[0086] Optionally, the light absorption coefficient of the light-transmitting structure 420 is less than the light absorption coefficient of the light-blocking block 42.

[0087] Specifically, the medium inside the light-transmitting structure 420 can be vacuum or air, or a medium layer, so that the light absorption coefficient of the light-transmitting structure 420 is less than the light absorption coefficient of the light-blocking block 42, thereby increasing the light transmittance of the light-blocking block 42 under the condition that the display panel meets the preset reflection intensity and the preset contrast ratio. The external ambient light or the reflected light of the fingerprint can be emitted from the light-emitting unit 003 through the light-transmitting structure, so that the photosensitive device on the side of the display substrate 100 of the display panel away from the light filter 004 can sense the light, thereby realizing the combination of the display panel and the under-screen fingerprint technology. The self-emission of the light-emitting unit 003 can be emitted through the light-transmitting structure of the light-blocking block 42 at the oblique viewing angle, so that the brightness of the display panel in the large viewing angle direction is improved, the problem of large viewing angle deviation of the display panel is improved, and the user experience is improved.

[0088] Optionally, referring to Figure 6 , the display panel further includes a transparent substrate 006, and the transparent substrate 006 is located between the light filter 004 and the display substrate 100. Preferably, the transparent substrate 006 includes a transparent organic substrate.

[0089] Specifically, the transparent substrate 006 is preferably a transparent organic substrate for supporting the filter layer 004. When the light emitting unit 003 emits light through the color resist block 41, the light passes through the transparent substrate 006 with good light transmission and the color resist block 41 with high out-coupling efficiency, thereby increasing the light emission efficiency of the light emitting unit 003. In the process of ambient light or fingerprint reflection light reaching the light sensing device on the side of the display substrate 100 away from the filter layer 004 through the light emitting unit 003, the ambient light or fingerprint reflection light can be emitted from between the light emitting units 003 through the light transmission structure and the transparent substrate 006, so that the light sensing device on the side of the display substrate 100 away from the filter layer 004 of the display panel can sense the light, thereby realizing the combination of the display panel and the under-screen fingerprint technology. The self-emission of the light emitting unit 003 can be emitted at an oblique viewing angle through the light transmission structure of the transparent substrate 006 and the light shielding block 42, so that the brightness of the display panel in the large viewing angle direction is improved, the problem of large viewing angle deviation of the display panel is improved, and the user experience is improved.

[0090] Optionally, referring to Figure 6 The display device further comprises a light sensing device 008 located on the side of the display substrate 100 away from the filter layer 004.

[0091] Illustratively, the light sensing device 008 is used to realize fingerprint identification according to the light emitted from between the light emitting units 003 through the light transmission structure.

[0092] Optionally, referring to Figure 6 The color resist block 41 extends to the area between the light emitting units 003, which can further realize the avoidance of the light emitted at an oblique viewing angle by the self-emission of the light emitting unit 003, further improve the problem of large viewing angle deviation of the display panel, and improve the user experience.

[0093] The display device provided by the embodiment of the present application also provides a display device, Figure 7 A structural schematic diagram of a display device provided by the embodiment of the present application. Referring to Figure 7 The display device 100a comprises the display panel 101 described in the above embodiments, so the display device provided by the embodiment of the present application also has the beneficial effects described in the above embodiments, which will not be described here. Illustratively, the display device can be a mobile phone, a computer, a wearable device or other electronic equipment, and the specific form of the display device is not limited in the embodiment of the present application.

[0094] Note that the above merely describes preferred embodiments of the present application and the principles of the technology applied. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and that various obvious changes, modifications and substitutions can be made without departing from the scope of the present application. Therefore, although the present application has been described in detail through the above embodiments, the present application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the claims.

Claims

1. A display panel, characterized by, Comprising: a display substrate comprising an array layer and a light-emitting unit arranged on one side of the array layer; a filter layer arranged on the light-emitting side of the display substrate, the filter layer comprising a color resistance block and a light shielding block, the color resistance block covering the light-emitting unit in the orthographic projection of the display substrate, the light shielding block not overlapping with the light-emitting unit in the orthographic projection of the display substrate, the light shielding block being provided with a light-transmitting structure, and at least one side of the light-transmitting structure being covered by the light shielding block; the light-transmitting structure comprises: a first light-transmitting structure located in a groove on the side of the light shielding block close to the display substrate; and / or a second light-transmitting structure located in a groove on the side of the light shielding block away from the display substrate. The thickness of the light-transmitting structure is less than the thickness of the light shielding block.

2. The display panel of claim 1, wherein, 3. The display panel of claim 2, wherein: the orthographic projection of the first light-transmitting structure on the display substrate does not overlap with the orthographic projection of the second light-transmitting structure on the display substrate. The shape of the orthographic projection of the first light-transmitting structure on the display substrate is the same as the shape of the orthographic projection of the second light-transmitting structure on the display substrate.

4. The display panel of claim 2, wherein, 5. The display panel of claim 2, wherein: there is a gap between two adjacent first light-transmitting structures in a first direction, and / or there is a gap between two adjacent second light-transmitting structures in the first direction; wherein the first direction is perpendicular to the thickness direction of the display panel. The gap length between two adjacent first light-transmitting structures in the first direction is related to the size of the orthographic projection of the second light-transmitting structure on the display substrate, and / or the gap length between two adjacent second light-transmitting structures in the first direction is related to the size of the orthographic projection of the first light-transmitting structure on the display substrate.

6. The display panel of claim 5, wherein, 7. The display panel of claim 2, wherein: a first virtual polygon is formed by connecting the center points of the orthographic projections of at least three first light-transmitting structures on the display substrate, and the orthographic projection of the second light-transmitting structure on the display substrate is located at the center point of the first virtual polygon; a second virtual polygon is formed by connecting the center points of the orthographic projections of at least three second light-transmitting structures on the display substrate, and the orthographic projection of the first light-transmitting structure on the display substrate is located at the center point of the second virtual polygon.

8. The display panel of claim 2, wherein: the area of the side of the first light-transmitting structure close to the surface of the light shielding block is greater than the area of the side of the first light-transmitting structure away from the surface of the light shielding block; the area of the side of the second light-transmitting structure close to the surface of the light shielding block is greater than the area of the side of the second light-transmitting structure away from the surface of the light shielding block. The light-transmitting structure comprises a third light-transmitting structure located inside the light shielding block, and the third light-transmitting structure is covered by the side of the light shielding block away from the display substrate and the side of the light shielding block close to the display substrate.

9. The display panel of claim 1, wherein, ​ 10. The display panel of any one of claims 1 to 9, wherein, The light transmission structure has a light absorption coefficient less than that of the light blocking block.

11. The display panel of any one of claims 1 to 9, wherein, The display panel further comprises a transparent substrate between the filter layer and the display substrate.

12. The display panel of claim 11, wherein, The transparent substrate comprises a transparent organic substrate.

13. A display device comprising: A display panel comprising the display panel of any one of claims 1-12.

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