Display panel and display device

Abstract

The embodiment of the invention provides a display panel and a display device, relates to the technical field of display, and is used for reducing the diffraction angle of light penetrating through a first display area and improving the light transmittance of the first display area. The display panel comprises a first display area; the first display area comprises a plurality of sub-pixels, and the sub-pixels comprise light-emitting elements; the display panel includes: a substrate; the light shielding layer is located on one side of the substrate, the light shielding layer comprises a plurality of light transmitting hole sets which are located in the first display area and arranged in an array mode in the first direction and the second direction, each light transmitting hole set comprises N light transmitting holes which are arranged in the first direction and are different in area, and the light transmitting holes are not overlapped with the light emitting elements in the direction perpendicular to the plane where the display panel is located.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0002] With the continuous development of display technology, more and more display devices are equipped with optical sensors with photosensitivity. At present, in order to increase the screen-to-body ratio of display panels, optical sensors are usually integrated in the display area of ​​the display panel. For this design, how to improve the light transmittance of the display panel and increase the light intensity received by the optical sensor has become the research focus of relevant technicians. Summary of the invention

[0003] In view of this, the present application provides a display panel and a display device to improve the light transmittance of the display panel.

[0004] In a first aspect, an embodiment of the present application provides a display panel, including a first display area; the first display area includes a plurality of sub-pixels, and the sub-pixels include light-emitting elements; The display panel includes: substrate; A light-shielding layer is located on one side of the substrate, and the light-shielding layer includes a plurality of light-transmitting hole groups located in the first display area. The light-transmitting hole groups are arranged in an array along a first direction and a second direction. The light-transmitting hole groups include N light-transmitting holes arranged along the first direction and having different areas. In a direction perpendicular to the plane where the display panel is located, the light-transmitting holes do not overlap with the light-emitting elements; wherein N is an integer, and N≥2.

[0005] In a second aspect, an embodiment of the present application provides a display device, comprising an optical sensor and the above-mentioned display panel; the orthographic projection of the optical sensor on the plane where the substrate is located is at least partially located in the first display area.

[0006] By adopting the solution provided in the embodiment of the present application, a first display area including a light-transmitting hole group is set in the display panel. When the display panel is working, light in the external environment can pass through the light-transmitting holes in the light-transmitting hole group from one side of the display panel to the optical sensor located on the other side.

[0007] Moreover, the embodiment of the present application makes the areas of multiple light-transmitting holes in the same light-transmitting hole group different. Compared with the method of setting multiple light-transmitting holes with the same area in the light-transmitting hole group, when the distance between two adjacent light-transmitting holes is the same, the distance between the light-transmitting holes with the same shape and area in two adjacent light-transmitting hole groups can be increased. For example, when the light-transmitting hole group includes a first light-transmitting hole and a second light-transmitting hole with different areas, the distance between the two adjacent first light-transmitting holes can be increased, and the distance between the two adjacent second light-transmitting holes can be increased, which can reduce the diffraction angle of the light diffracted at the edge of the light-transmitting hole, thereby increasing the possibility of the diffracted light passing through the first display area of ​​the display panel and entering the optical sensor, thereby improving the light transmittance of the first display area, increasing the light intensity entering the optical sensor, and improving the working performance of the optical sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0009] Figure 1 A schematic diagram of a display panel provided by an embodiment of the present invention; Figure 2 for Figure 1 An enlarged schematic diagram of the first display area in FIG. Figure 3 for Figure 2 A schematic cross-sectional view along BB'; Figure 4 A diffraction light intensity simulation comparison diagram provided by an embodiment of the present invention; Figure 5 for Figure 1 Another enlarged schematic diagram of the first display area in FIG. Figure 6 A diffraction curve diagram under different grating constants provided by an embodiment of the present invention; Figure 7 for Figure 1 An enlarged schematic diagram of the second display area in FIG. Figure 8 A schematic diagram of wiring of a first display area provided by an embodiment of the present invention; Fig. 9 A method for Figure 8 a schematic diagram of a corresponding pixel driving circuit; Fig.10 A simplified schematic diagram of a first signal line, a second signal line, a first light-transmitting hole, and a second light-transmitting hole provided in an embodiment of the present invention; Fig.11 Another simplified schematic diagram of a first signal line, a second signal line, a first light-transmitting hole and a second light-transmitting hole provided in an embodiment of the present invention; Fig.12 A simplified schematic diagram of a first signal line, a second signal line, a first light-transmitting hole, and a second light-transmitting hole provided in another embodiment of the present invention; Fig.13 A simplified schematic diagram of a first signal line, a second signal line, a first light-transmitting hole, and a second light-transmitting hole provided in another embodiment of the present invention; Fig.14 A simplified schematic diagram of a first signal line, a second signal line, a first light-transmitting hole, and a second light-transmitting hole provided in another embodiment of the present invention; Fig.15 A simplified schematic diagram of a first signal line, a second signal line, a first light-transmitting hole, and a second light-transmitting hole provided in another embodiment of the present invention; Fig.16 A simplified schematic diagram of a third signal line, a fourth signal line, a first light-transmitting hole and a second light-transmitting hole provided in an embodiment of the present invention; Fig.17 A simplified schematic diagram of another third signal line, a fourth signal line, a first light-transmitting hole and a second light-transmitting hole provided in an embodiment of the present invention; Fig.18 for Figure 2 Another schematic cross-section along BB'; Fig.19 A schematic diagram of the optical path of external light passing through the light-transmitting hole and the light-shielding metal; Fig. 20 A schematic diagram of a display device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0010] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0011] It should be clear that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0012] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0013] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0014] An embodiment of the present invention provides a display panel, such as Figure 1 As shown, Figure 1 A schematic diagram of a display panel provided by an embodiment of the present invention, wherein the display panel includes a first display area A1. Figure 2 and Figure 3 As shown, Figure 2 for Figure 1 An enlarged schematic diagram of the first display area A1 in FIG. Figure 3 for Figure 2 A schematic cross-sectional view along BB', the first display area A1 includes sub-pixels, and the sub-pixels include light-emitting elements 11. Exemplarily, the display panel includes light-emitting elements of multiple colors, Figure 2 As an example, the plurality of light emitting elements 11 include a first color light emitting element 111, a second color light emitting element 112 and a third color light emitting element 113. Optionally, the first color light emitting element 111, the second color light emitting element 112 and the third color light emitting element 113 may be a red light emitting element, a blue light emitting element and a green light emitting element, respectively.

[0015] like Figure 3 As shown, the display panel includes: a substrate 10; a light shielding layer 2 located on one side of the substrate 10, the light shielding layer 2 includes a plurality of light-transmitting hole groups 20 arranged in an array along a first direction h11 and a second direction h12, and the light-transmitting hole group 20 includes N light-transmitting holes K arranged along the first direction h11 and having different areas, wherein N is an integer, and N≥2. In a direction perpendicular to the plane where the substrate 10 is located, the light-transmitting hole K and the light-emitting element 11 do not overlap. In other words, in the plane where the substrate 10 is located, the orthographic projection of the light-transmitting hole K and the orthographic projection of the light-emitting element 11 do not overlap. The area of ​​the above-mentioned light-transmitting hole K refers to the area of ​​the orthographic projection of the light-transmitting hole K on the plane where the substrate 10 is located. Figure 2 As an illustration, N=2, that is, the light-transmitting hole group 20 includes a first light-transmitting hole K1 and a second light-transmitting hole K2, and the orthographic projection area of ​​the first light-transmitting hole K1 on the plane where the substrate 10 is located is larger than the orthographic projection area of ​​the second light-transmitting hole K2 on the plane where the substrate 1 is located.

[0016] Exemplarily, the first display area A1 includes an optical sensor setting area. That is, in the embodiment of the present invention, an optical sensor may be set in the first display area A1. Optionally, the optical sensor may be located on a side of the display panel away from the light emitting side.

[0017] In the embodiment of the present invention, a first display area A1 including a light-transmitting hole group 20 is provided in the display panel. When the display panel is working, light in the external environment can be emitted from one side of the display panel to the optical sensor located on the other side through the light-transmitting hole K in the light-transmitting hole group 20. The optical sensor performs corresponding operations according to the intensity of the received external ambient light. For example, the optical sensor can adjust the brightness of the display panel according to the intensity of the received light. For example, when the ambient brightness is strong, the display brightness of the display panel can be increased so that the user can see the picture clearly; when the ambient brightness is weak, the display brightness of the display panel can be reduced to reduce power consumption.

[0018] When light from the external environment passes through the various film layers in the display panel, the light not only transmits through the light-transmitting hole K, but also undergoes diffraction, where the light travels around the edge of the light-transmitting hole. Multiple light-transmitting holes with the same shape and area in different light-transmitting hole groups 20 can be used as gratings. Figure 3 As shown, L1 illustrates the diffraction light that propagates around the edge of the light-transmitting hole K. According to the grating equation: (1) Among them, L is the distance between two adjacent light-transmitting holes K with the same shape and area, which can also be understood as the grating constant; θ is the diffraction angle of the light, k is the diffraction order, and the value is 0, ±1, ±2, ...; λ is the wavelength of the light. In the embodiment of the present invention, by making the areas of the multiple light-transmitting holes K in the same light-transmitting hole group 20 different, compared with the method of setting multiple light-transmitting holes with the same area in the light-transmitting hole group 20, when the distance between two adjacent light-transmitting holes K is the same and is d, the distance between the light-transmitting holes with the same shape and area in the two adjacent light-transmitting hole groups 20 can be increased to Nd. For example, when N=2, that is, the light-transmitting hole group 20 includes a first light-transmitting hole K1 and a second light-transmitting hole K2 with different areas, the distance between the two adjacent first light-transmitting holes K1 can be increased to 2d, and the distance between the two adjacent second light-transmitting holes K2 can be increased to 2d, that is, the grating constant L in the above formula (1) is increased. When the diffraction order k and the wavelength λ are constant, the diffraction angle θ of the light diffracted at the edge of the light-transmitting hole can be reduced. If the diffraction angle is too large, the diffracted light will be absorbed by the light-shielding structure located outside the light-transmitting area in the subsequent film layer and cannot be emitted to the optical sensor. The light-transmitting area refers to the area including the light-transmitting hole or other highly transparent materials. The light-transmitting area may be located between two adjacent light-emitting elements. Therefore, based on the arrangement provided by the embodiment of the present invention, the diffraction angle of the diffracted light can be reduced, thereby increasing the possibility of the diffracted light passing through the first display area A1 of the display panel and entering the optical sensor, thereby increasing the light transmittance of the first display area A1, increasing the light intensity entering the optical sensor, and improving the working performance of the optical sensor.

[0019] It should be noted that, in the embodiment of the present invention, the distance between two adjacent light-transmitting holes K refers to the distance between the centers of the two adjacent light-transmitting holes K. If the geometric shape of the light-transmitting hole K is a regular geometric shape, the center of the light-transmitting hole K coincides with its geometric center. For example, if the shape of the light-transmitting hole K is a parallelogram, the intersection of the two diagonals of the parallelogram is its geometric center. If the geometric shape of the light-transmitting hole K is an asymmetric irregular geometric shape, its center can be determined by relevant technologies.

[0020] The regular figure (regular geometric shape) in the embodiment of the present invention may be a central symmetric figure or an axisymmetric figure with two or more axes of symmetry. For example, an ellipse, a parallelogram (non-rectangular and non-rhombus), a circle, a rounded rectangle, a regular polygon, a rectangle, a rhombus, etc. are all regular figures. For a central symmetric figure, its central symmetry point is the center; for an axisymmetric figure with two or more axes of symmetry, the intersection of its two axes of symmetry is the center. Figures other than regular figures are irregular figures.

[0021] In some embodiments, the geometric centers of the light-transmitting holes K arranged along the first direction are located on a straight line, and / or the geometric centers of the light-transmitting holes K arranged along the second direction are located on a straight line.

[0022] Combination Figure 4 As shown, Figure 4 A diffraction light intensity simulation comparison diagram provided for an embodiment of the present invention, wherein the horizontal axis is the diffraction order and the vertical axis is the light intensity. Scheme A indicates that the first display area A1 includes a first light-transmitting hole with a diameter of 12μm and a second light-transmitting hole with a diameter of 12.1μm, and the first light-transmitting hole and the second light-transmitting hole are arranged alternately; Scheme B indicates that the first display area A1 only includes a first light-transmitting hole with a diameter of 12μm; wherein the total number of light-transmitting holes in scheme A and scheme B is the same, and the distances between two adjacent light-transmitting holes in scheme A and scheme B are equal. Based on the simulation results, it can be obtained that the intensity comparison of the central area C under the two schemes satisfies: , where A represents the intensity of the central area of ​​scheme A, and B represents the intensity of the central area of ​​scheme B. The central area refers to the diffraction angle in the range of -5° to 5°.

[0023] Considering that the sum of the areas of the light-transmitting holes in solution A is relatively large, it satisfies: Among them, S A represents the sum of the areas of all the light-transmitting holes in scheme A, S Brepresents the sum of the areas of the light-transmitting holes of solution B. Therefore, after deducting the area factor, it can be seen that the transmittance improvement of solution A compared with solution B satisfies 5.04%-1.67%=3.37%, that is, the embodiment of the present invention can improve the transmittance of the first display area A1 by making the areas of the multiple light-transmitting holes in the same light-transmitting hole group 20 different.

[0024] Exemplarily, in an embodiment of the present invention, the above N satisfies: 2≤N≤6. Figure 2 A schematic diagram for setting N = 2, or Figure 5 As shown, Figure 5 for Figure 1 Another enlarged schematic diagram of the first display area in FIG. 2 , wherein N=4, that is, the light-transmitting hole group 20 includes four light-transmitting holes K with different areas, and the four light-transmitting holes K are respectively the first light-transmitting hole K1, the second light-transmitting hole K2, the third light-transmitting hole K3 and the fourth light-transmitting hole K4. Figure 5 The arrangement shown can make the distance between two light-transmitting holes K with the same area in two adjacent light-transmitting hole groups 20 in the first direction h11 be 4d.

[0025] For example, Figure 6 As shown, Figure 6 A diffraction curve diagram under different grating constants provided for an embodiment of the present invention shows that as the grating constant increases from d to 5d, the difference in diffraction angles of two adjacent diffraction curves at the same diffraction order gradually decreases, that is, the benefit of reducing the diffraction angle by increasing the grating constant gradually decreases. By setting N≤6, the embodiment of the present invention can avoid setting too many light-transmitting holes with different areas in the first display area A1. Since the light-transmitting holes need to be set away from the light-emitting elements, this design method is conducive to setting more light-emitting elements in the display panel, which is conducive to improving the resolution of the display panel.

[0026] Optionally, when N≥3, that is, when the light-transmitting hole group 20 includes at least three light-transmitting holes K with different areas, the embodiment of the present invention can arrange the multiple light-transmitting holes K in sequence in the first direction h11 from large to small or from small to large in area. Alternatively, the embodiment of the present invention can also arrange the multiple light-transmitting holes K not in order of area size to increase the irregularity of the arrangement of the light-transmitting holes K and weaken the diffraction phenomenon.

[0027] Exemplarily, the N light-transmitting holes K in the light-transmitting hole group 20 which are arranged along the first direction h11 and have different areas include the first light-transmitting hole K1 to the Nth light-transmitting hole; in the embodiment of the present invention, along the second direction h12, the first light-transmitting hole K1 to the Nth light-transmitting hole are alternately arranged in sequence.

[0028] Take N=4 as an example, Figure 5As shown, the light-transmitting hole group 20 includes a first light-transmitting hole K1, a second light-transmitting hole K2, a third light-transmitting hole K3 and a fourth light-transmitting hole K4 arranged along the first direction h11. Along the second direction h12, the first light-transmitting hole K1, the second light-transmitting hole K2, the third light-transmitting hole K3 and the fourth light-transmitting hole K4 are arranged alternately in sequence. Based on this arrangement, the arrangement rule of the light-transmitting holes in the second direction h12 can be made the same as the arrangement rule of the light-transmitting holes in the first direction h11. That is, in Figure 5 In the first direction h11 and the second direction h12, the plurality of light-transmitting holes K are alternately arranged in the order of the first light-transmitting hole K1, the second light-transmitting hole K2, the third light-transmitting hole K3 and the fourth light-transmitting hole K4.

[0029] Exemplarily, in the embodiment of the present invention, the distance between two adjacent light-transmitting holes K in the same light-transmitting hole group 20 is equal to the distance between two adjacent light-transmitting hole groups 20. The distance between two adjacent light-transmitting holes K refers to the distance between the geometric centers of two adjacent light-transmitting holes K, and the distance between two adjacent light-transmitting hole groups 20 refers to the distance between the geometric centers of the two light-transmitting holes K that are respectively located in the two light-transmitting hole groups 20 and are closest to each other. When N=4, that is, when the light-transmitting hole group 20 includes the first light-transmitting hole K1, the second light-transmitting hole K2, the third light-transmitting hole K3, and the fourth light-transmitting hole K4, as Figure 5 As shown, the distance between the adjacent first light transmission hole K1 and the second light transmission hole K2 in the same light transmission hole group 20 is d, and the distance between the fourth light transmission hole K4 in one light transmission hole group 20 and the first light transmission hole K1 in another light transmission hole group 20 adjacent to the light transmission hole group 20 is also d. Based on this setting, the distances between any two light transmission holes K with the same area respectively located in two adjacent light transmission hole groups 20 can be made equal. For example, when the light transmission hole group 20 includes the first light transmission hole K1 and the second light transmission hole K2, the distance between the two adjacent first light transmission holes K1 can be made equal to the distance between the two adjacent second light transmission holes K2, so that the diffraction angle generated when the light passes through the first light transmission hole K1 and the diffraction angle generated when the light passes through the second light transmission hole K2 can be equal, and then the light intensity received by the optical sensor through the first light transmission hole K1 and the second light transmission hole K2 can be made consistent, which is beneficial to improve the consistency of the light intensity received by different parts of the optical sensor and improve the working performance of the optical sensor.

[0030] For example, Figure 1 As shown, the display panel further includes a second display area A2; the second display area A2 at least partially surrounds the first display area A1; and the second display area A2 also includes a plurality of sub-pixels.

[0031] In the embodiment of the present invention, the number of sub-pixels in the second display area A2 is greater than or equal to the number of sub-pixels in the first display area A1. Figure 2 and Figure 7 As shown, Figure 7 for Figure 1 An enlarged schematic diagram of the second display area A2 in FIG. 1 shows that the density of the light-emitting elements in the second display area A2 is greater than the density of the light-emitting elements in the first display area A1, that is, the pixel density in the second display area A2 is greater than the pixel density in the first display area A1. Based on this setting, the light transmittance of the first display area A1 can be improved, so that the light transmittance of the first display area A1 is greater than or equal to the light transmittance of the second display area A2, thereby increasing the light intensity entering the optical sensor set corresponding to the first display area A1 and improving the working performance of the optical sensor. On the other hand, the resolution of the second display area A2 can be guaranteed, so that the second display area A2 has a better display effect. During the operation of the optical sensor, the sub-pixels in the first display area A1 and the second display area A2 can emit light together, so that the display panel has a full-screen display effect.

[0032] For example, Figure 7 As shown, the second display area A2 may not include the above-mentioned light-transmitting hole.

[0033] It should be noted that Figure 2 , Figure 5 and Figure 7 The pixel arrangement shown is only an illustration and can be adjusted according to different design requirements, which is not limited in the embodiment of the present invention.

[0034] For example, Figure 3 As shown, the light shielding layer 2 includes a first light shielding layer 21 and a second light shielding layer 22 . Along a direction h2 perpendicular to the plane where the substrate 10 is located, the second light shielding layer 22 is located on a side of the first light shielding layer 21 close to the substrate 1 .

[0035] The light-transmitting hole K includes a first sub-light-transmitting hole located in the first light-shielding layer 21 and a second sub-light-transmitting hole located in the second light-shielding layer 22; the light-transmitting hole K includes Figure 3 Taking the first light-transmitting hole K1 and the second light-transmitting hole K2 as examples, for the sake of distinction, the first sub-light-transmitting hole in the first light-transmitting hole K1 is marked as K11, the second sub-light-transmitting hole in the first light-transmitting hole K1 is marked as K12, the first sub-light-transmitting hole in the second light-transmitting hole K2 is marked as K21, and the second sub-light-transmitting hole in the second light-transmitting hole K2 is marked as K22. In the plane where the substrate 10 is located, the orthographic projection of the first sub-light-transmitting hole and the orthographic projection of the second sub-light-transmitting hole in the same light-transmitting hole K at least partially overlap. That is, in the plane where the substrate 10 is located, the orthographic projection of the first sub-light-transmitting hole K11 in the first light-transmitting hole K12 at least partially overlaps, and the orthographic projection of the first sub-light-transmitting hole K21 in the second light-transmitting hole K22 at least partially overlaps.

[0036] In the embodiment of the present invention, the area of ​​the second sub-light-transmitting hole in the same light-transmitting hole K is greater than or equal to the area of ​​the first sub-light-transmitting hole. Exemplarily, in the plane where the substrate 10 is located, the embodiment of the present invention can make the orthographic projection of the second sub-light-transmitting hole cover the orthographic projection of the first sub-light-transmitting hole. In the process of external light irradiating to the optical sensor, it first passes through the first sub-light-transmitting hole and then passes through the second sub-light-transmitting hole. Based on the setting method provided in the embodiment of the present invention, the large-angle diffraction light diffracted by the edge of the first sub-light-transmitting hole can continue to pass through the second sub-light-transmitting hole with a relatively large area, so that the diffracted light can be smoothly projected to the optical sensor, which is beneficial to improve the light intensity received by the optical sensor and improve the working performance of the optical sensor.

[0037] For example, Figure 3 As shown, the display panel includes a pixel definition layer (Pixel Definition Layer, PDL) 23 and a black matrix (Black Matrix, BM) 24; in the embodiment of the present invention, the first light shielding layer 21 includes the black matrix 24, and the second light shielding layer 22 includes the pixel definition layer 23. That is, the black matrix 24 includes the first sub-light-transmitting hole, and the pixel definition layer 23 includes the second sub-light-transmitting hole.

[0038] Optional, such as Figure 3 As shown, the black matrix 24 is located on the side of the light-emitting element 11 away from the substrate 10; the black matrix 24 also includes a first opening OP1, and in the plane where the substrate 10 is located, the orthographic projection of the first opening OP1 at least partially overlaps with the orthographic projection of the light-emitting element 11; the first opening OP1 can allow the outgoing light of the light-emitting element 11 to pass through.

[0039] For example, Figure 3 As shown, the display panel further includes a plurality of color filters (CF) 25, which are located in the first opening OP1. The color filters 25 can filter the light emitted by the light emitting element 11 so that the color of the light emitted from the color filters 25 meets the required requirements.

[0040] like Figure 3 As shown, the pixel definition layer 23 further includes a second opening OP2, the light emitting element 11 includes a light emitting layer 110, and at least a portion of the light emitting layer 110 is located in the second opening OP2. Exemplarily, the pixel definition layer 23 can be a black pixel definition layer to reduce the reflectivity of the display panel, increase the contrast of the display panel, and improve the display effect of the display panel.

[0041] Optional, such as Figure 8 As shown, Figure 8A wiring diagram of a first display area provided in an embodiment of the present invention, wherein the sub-pixel further includes a pixel driving circuit 12 electrically connected to the light-emitting element; the pixel driving circuit 12 is used to control the driving current of the light-emitting element, thereby adjusting the brightness of the light-emitting element. In an embodiment of the present invention, in the plane where the substrate is located, the orthographic projection of the light-transmitting hole K is located between the orthographic projections of two adjacent pixel driving circuits 12 in the first direction h11, wherein the two adjacent pixel driving circuits 12 are symmetrically designed. Symmetrical design means that the same transistors in the two adjacent pixel driving circuits 12 are symmetrically designed about the symmetry axis extending along the second direction h12.

[0042] For example, Figure 8 and Fig. 9 As shown, Fig. 9 A method for Figure 8 Schematic diagram of the corresponding pixel driving circuit, the pixel driving circuit 12 includes a data writing transistor M1, a driving transistor M2, a gate reset transistor M3, a threshold compensation transistor M4, a first light emission control transistor M5, a second light emission control transistor M6 and an anode reset transistor M7. The gate reset transistor M3 provides a reset signal Ref to the gate of the driving transistor M2 in response to the first scan signal S1. The anode reset transistor M7 provides a reset signal Ref to the anode of the light emitting element 11 in response to the first scan signal S1. The data writing transistor M1 provides a data signal Data to the first electrode of the driving transistor M2 in response to the second scan signal S2, and the threshold compensation transistor M4 electrically connects the second electrode and the gate of the driving transistor M2 in response to the second scan signal S2. The first light emission control transistor M5 provides a first power supply signal PVDD to the first electrode of the driving transistor M2 in response to the light emission control signal EM. The second light emission control transistor M6 electrically connects the second electrode of the driving transistor M2 and the light emitting element in response to the light emission control signal EM.

[0043] like Figure 8 As shown, the display panel also includes a plurality of signal lines electrically connected to the pixel driving circuit 12, and the signal lines include a first scanning line S1 (using the same mark as the first scanning signal transmitted by it, the same below), a second scanning line S2, a light-emitting control line EM, a data signal line Data, a first power signal line PVDD and a reset signal line Ref, etc.

[0044] The same transistors in the two adjacent pixel driving circuits 12 are symmetrically designed, including: the data writing transistor M1 in one pixel driving circuit 12 and the data writing transistor M1 in another adjacent pixel driving circuit 12 are symmetrical about the symmetry axis X extending along the second direction h12; the driving transistor M2 in one pixel driving circuit 12 and the driving transistor M2 in another adjacent pixel driving circuit 12 are symmetrical about the symmetry axis X extending along the second direction h12; the gate reset transistor M3 in one pixel driving circuit 12 and the gate reset transistor M3 in another adjacent pixel driving circuit 12 are symmetrical about the symmetry axis X extending along the second direction h12; the threshold compensation transistor M4 in one pixel driving circuit 12 and the adjacent The threshold compensation transistor M4 in another pixel driving circuit 12 is symmetrical about the symmetry axis X extending along the second direction h12; the first light emission control transistor M5 in one pixel driving circuit 12 and the first light emission control transistor M5 in another adjacent pixel driving circuit 12 are symmetrical about the symmetry axis X extending along the second direction h12; the second light emission control transistor M6 in one pixel driving circuit 12 and the second light emission control transistor M6 in another adjacent pixel driving circuit 12 are symmetrical about the symmetry axis X extending along the second direction h12; the anode reset transistor M7 in one pixel driving circuit 12 and the anode reset transistor M7 in another adjacent first pixel driving circuit 12 are symmetrical about the symmetry axis X extending along the second direction h12.

[0045] In the embodiment of the present invention, by making two adjacent pixel driving circuits 12 in the first direction h11 symmetrically designed, at least some of the transistors and / or at least some of the signal lines and other light shielding structures in the pixel driving circuit 12 located on one side of the light-transmitting hole K can be arranged at a position farther from the light-transmitting hole K in the pixel driving circuit 12, and at least some of the transistors and / or at least some of the signal lines and other light shielding structures in the pixel driving circuit 12 located on the other side of the light-transmitting hole K can also be arranged at a position farther from the light-transmitting hole K in the pixel driving circuit 12. Figure 8 As shown, in the embodiment of the present invention, the first light-emitting control transistor M5 and the first power signal line PVDD can be arranged at a position in the pixel driving circuit 12 that is far away from the light-transmitting hole K, so that the distance between the first power signal line PVDD electrically connected to the two pixel driving circuits 12 in the first direction h11 can be increased. Further, when the light-transmitting hole K is arranged between the two pixel driving circuits 12, the possibility of the light-transmitting hole K being blocked by the first power signal line PVDD and the first light-emitting control transistor M5 can be reduced, which is beneficial to reducing the difficulty of setting the light-transmitting hole K, improving the light transmittance of the light-transmitting hole, and increasing the light-transmitting area of ​​the light-transmitting hole K.

[0046] It should be noted that Figure 8 The layout of the pixel driving circuit shown in Fig. 9 The circuit structure of the pixel driving circuit shown is for illustration only, and other designs are possible in practice, which is not limited in the embodiments of the present invention.

[0047] When the same light-transmitting hole group 20 includes a first light-transmitting hole K1 and a second light-transmitting hole K2, in the plane where the substrate 10 is located, the orthographic projection of the first light-transmitting hole K1 can be located between the orthographic projections of two adjacent pixel driving circuits 12 in the first direction h11, and the orthographic projection of the second light-transmitting hole K2 can be located between the orthographic projections of another two adjacent pixel driving circuits 12 in the first direction h11.

[0048] For example, Figure 8 As shown, the first display area A1 further includes a first signal line 31 and a second signal line 32 electrically connected to the pixel driving circuit 12, the first signal line 31 and the second signal line 32 extend along a first direction h11; the first signal line 31 and the second signal line 32 are arranged along a second direction h12. On the plane where the substrate is located, the orthographic projections of a plurality of light-transmitting holes K in the same light-transmitting hole group are located between the orthographic projections of the first signal line 31 and the orthographic projections of the second signal line 32 in the second direction h12.

[0049] Taking the light-transmitting hole group 20 including the first light-transmitting hole K1 and the second light-transmitting hole K2 as an example, Fig.10 , Fig.11 , Fig.12 , Fig.13 , Fig.14 and Fig.15 As shown, Fig.10 , Fig.11 , Fig.12 , Fig.13 , Fig.14 and Fig.15 Simplified schematic diagrams of six kinds of first signal lines, second signal lines, first light-transmitting holes and second light-transmitting holes provided in the embodiments of the present invention respectively. In the plane where the substrate is located, the orthographic projection of the first light-transmitting hole K1 is located between the orthographic projection of the first signal line 31 and the orthographic projection of the second signal line 32; the orthographic projection of the second light-transmitting hole K2 is located between the orthographic projection of the first signal line 31 and the orthographic projection of the second signal line 32.

[0050] In the embodiment of the present invention, Fig.10 , Fig.11 , Fig.12 , Fig.13 , Fig.14 and Fig.15As shown, the first signal line 31 includes a first portion 311, and the second signal line 32 includes a second portion 321; on the plane where the substrate is located, the orthographic projection of the first portion 311 is close to the edge of the first light-transmitting hole K1 and surrounds the orthographic projection of part of the first light-transmitting hole K1, and the orthographic projection of the second portion 321 is close to the edge of the first light-transmitting hole K1 and surrounds the orthographic projection of part of the first light-transmitting hole K1. Based on this setting, on the basis of ensuring that the signals transmitted by the first signal line 31 and the second signal line 32 can be transmitted normally, it can be avoided that the first signal line 31 and the second signal line 32 block the first light-transmitting hole K1, and the light transmittance of the first light-transmitting hole K1 can be guaranteed.

[0051] It should be noted that Fig.10 The shapes of the first signal line 31 and the second signal line 32 shown are for illustration only. When the first signal line 31 as a whole extends along the first direction h11, and when the second signal line 32 as a whole extends along the first direction h11, the embodiment of the present invention may further set a broken line segment or a curved line segment in the first signal line 31 or the second signal line 32 according to different design requirements.

[0052] Optionally, the first signal line 31 and the second signal line 32 may transmit different signals. Figure 8 As an example, the first signal line 31 includes the first scan line S1 and the second signal line 32 includes the reset signal line Ref.

[0053] For example, Fig.10 As shown, the first signal line 31 further includes a third portion 312, and the second signal line 32 further includes a fourth portion 322; on the plane where the substrate is located, the orthographic projection of the third portion 312 does not overlap with the orthographic projection of each light-transmitting hole K in the light-transmitting hole group 20 in the second direction h12, and the orthographic projection of the fourth portion 322 does not overlap with the orthographic projection of each light-transmitting hole K in the light-transmitting hole group 20 in the second direction h12. Taking the light-transmitting hole group 20 including the first light-transmitting hole K1 and the second light-transmitting hole K2 as an example, on the plane where the substrate is located, the orthographic projection of the third portion 312 does not overlap with the orthographic projection of the first light-transmitting hole K1 in the second direction h12, and the orthographic projection of the third portion 312 does not overlap with the orthographic projection of the second light-transmitting hole K2 in the second direction h12; the orthographic projection of the fourth portion 322 does not overlap with the orthographic projection of the first light-transmitting hole K1 in the second direction h12, and the orthographic projection of the fourth portion 322 does not overlap with the orthographic projection of the second light-transmitting hole K2.

[0054] In the embodiment of the present invention, the line width of the first portion 311 is smaller than or equal to the line width W312 of the third portion 312 ; and / or the line width of the second portion 321 is smaller than or equal to the line width W322 of the fourth portion 322 .

[0055] Exemplarily, the first portion 311 may be a straight portion, or may be Fig.10 As shown, the non-linear portions have different line widths at different positions. When the first portion 311 is set as a non-linear portion, the first portion 311 may have different line widths at different positions. Fig.10 As shown, the minimum line width of the first portion 311 is W311min, and the maximum line width is W311max. W311min<W311max. The line width of the first portion 311 mentioned above refers to the minimum line width W311min of the first portion 311.

[0056] Similarly, when the second portion 321 is set as a non-linear portion, the second portion 321 may have different line widths at different positions. Fig.10 As shown, the minimum line width of the second portion 321 is W321min, and the maximum line width is W321max. W321min<W321max. The line width of the second portion 321 mentioned above refers to the minimum line width W321min of the second portion 321.

[0057] In the embodiment of the present invention, by reducing the line width of the first portion 311 and / or the second portion 321 , the first portion 311 and / or the second portion 321 can avoid the first light transmission hole K1 , which is beneficial to ensure the light transmittance of the first light transmission hole K1 .

[0058] For example, Fig.10 As shown, on the plane where the substrate is located, the orthographic projection of the first portion 311 away from the edge of the first light transmission hole K1 is in a straight line shape; and / or the orthographic projection of the second portion 321 away from the edge of the first light transmission hole K1 is in a straight line shape. Based on this arrangement, the uniformity of the shape of the edge of the first signal line 31 and / or the second signal line 32 away from the first light transmission hole K1 can be improved.

[0059] Continue to refer to Fig.10 As shown, on the plane where the substrate is located, the edge of the orthographic projection of the third portion 312 away from the first light transmission hole K1 is in a straight line shape, and the edge of the orthographic projection of the fourth portion 322 away from the first light transmission hole K1 is in a straight line shape. Optionally, the edge of the orthographic projection of the first portion 311 away from the first light transmission hole K1 and the edge of the orthographic projection of the third portion 312 away from the first light transmission hole K1 can be parallel to each other. The edge of the orthographic projection of the second portion 321 away from the first light transmission hole K1 and the edge of the orthographic projection of the fourth portion 322 away from the first light transmission hole K1 can be parallel to each other.

[0060] For example, Fig.10As shown, the first portion 311 includes a first sub-portion 3111 and a second sub-portion 3112. The first sub-portion 3111 has a notch on one side close to the first light transmission hole K1, and the second sub-portion 3112 does not include a notch. The first sub-portion 3111 can be regarded as being formed by removing the portion close to the first light transmission hole K1 on the basis of the third portion 312. The second portion 321 includes a third sub-portion 3211 and a fourth sub-portion 3212. The third sub-portion 3211 has a notch on one side close to the first light transmission hole K1, and the fourth sub-portion 3212 does not include a notch. The third sub-portion 3211 can be regarded as being formed by removing the portion close to the first light transmission hole K1 on the basis of the fourth portion 322.

[0061] It should be noted that Fig.10 The circular shape of the first light-transmitting hole K1 is only for illustration. In the embodiment of the present invention, the shape of the first light-transmitting hole K1 can also be designed as a polygon or an irregular shape according to different design requirements. Correspondingly, the shape of the edge of the first portion 311 and the second portion 321 near the first light-transmitting hole K1 can also be designed as a straight line, a folded line, a curve or other shapes, which is not limited in the embodiment of the present invention.

[0062] Optional, such as Fig.11 As shown, at least part of the first portion 311 protrudes in a direction away from the first light-transmitting hole K1; and / or at least part of the second portion 321 protrudes in a direction away from the first light-transmitting hole K1. Based on this arrangement, the area where the first light-transmitting hole K1 can be arranged can be increased, which is conducive to increasing the light-transmitting area of ​​the first light-transmitting hole K1, thereby increasing the light transmittance of the first display area A1.

[0063] For example, Fig.11 As shown, the first portion 311 includes a first sub-portion 3111 and a second sub-portion 3112, the first sub-portion 3111 protrudes in a direction away from the first light transmission hole K1, and the second sub-portion 3112 may not protrude. The second portion 321 includes a third sub-portion 3211 and a fourth sub-portion 3212, the third sub-portion 3211 protrudes in a direction away from the first light transmission hole K1, and the fourth sub-portion 3212 may not protrude.

[0064] Optional, such as Fig.10 and Fig.11 As shown, the first signal line 31 also includes a fifth portion 313 corresponding to the second light-transmitting hole K2, and the second signal line 32 also includes a sixth portion 323 corresponding to the second light-transmitting hole K2; on the plane where the substrate is located, the orthographic projection of the edge of the fifth portion 313 close to the second light-transmitting hole K2 is a straight line; and / or, the orthographic projection of the edge of the sixth portion 323 close to the second light-transmitting hole K2 is a straight line.

[0065] For example, Fig.10 and Fig.11As shown, the maximum width W22 of the second light transmission hole K2 in the second direction h12 is smaller than the shortest distance d0 between the third portion 312 and the fourth portion 322. The shortest distance between the third portion 312 and the fourth portion 322 may be the distance between the edges of the third portion 312 and the fourth portion 322 on one side close to the light transmission hole K. In this case, in order to set the second light transmission hole K2, the embodiment of the present invention may not need to make additional adjustments to the fifth portion 313 and the sixth portion 323. For example, Fig.10 and Fig.11 As shown, in the embodiment of the present invention, the morphology of the fifth portion 313 can be designed to be the same as the third portion 312, and the morphology of the sixth portion 323 can be designed to be the same as the fourth portion 322. For example, on the plane where the substrate is located, the embodiment of the present invention can design the orthographic projection of the fifth portion 313 and the orthographic projection of the third portion 312 to be straight lines with mutually parallel extension directions, and design the orthographic projection of the sixth portion 323 and the orthographic projection of the fourth portion 322 to be straight lines with mutually parallel extension directions. With this design, on the one hand, the shape uniformity of the first signal line 31 and / or the second signal line 32 at different positions can be improved, and on the other hand, it is also conducive to shortening the length of the fifth portion 313 and the sixth portion 323, and reducing the voltage drop during signal transmission.

[0066] Optional, such as Fig.12 , Fig.13 , Fig.14 and Fig.15 As shown, on the plane where the substrate is located, the embodiment of the present invention can also make the orthographic projection of the fifth part 313 close to the edge of the second light-transmitting hole K2 and surround the orthographic projection of part of the second light-transmitting hole K2, and / or make the orthographic projection of the sixth part 323 close to the edge of the second light-transmitting hole K2 and surround the orthographic projection of part of the second light-transmitting hole K2.

[0067] Based on the above configuration, when designing the second light-transmitting hole K2, for example, Fig.12 and Fig.13 As shown, the embodiment of the present invention can make the maximum width W22 of the second light-transmitting hole K2 in the second direction h12 greater than or equal to the minimum distance d0 between the third part 312 and the fourth part 322, so as to increase the area of ​​the second light-transmitting hole K2 and improve the ambient light intensity transmitted by the second light-transmitting hole K2.

[0068] Optional, such as Fig.13 As shown, the embodiment of the present invention can make at least a portion of the fifth portion 313 protrude in a direction away from the second light-transmitting hole K2; and / or the sixth portion 323 protrude in a direction away from the second light-transmitting hole K2, so as to further increase the settable area of ​​the second light-transmitting hole K2, increase the light-transmitting area of ​​the second light-transmitting hole K2, and thereby increase the light transmittance of the first display area A1.

[0069] For example, Fig.13 As shown, the fifth portion 313 includes a fifth sub-portion 3131 and a sixth sub-portion 3132, the fifth sub-portion 3131 protrudes in a direction away from the second light transmission hole K2, and the sixth sub-portion 3132 may not protrude. The sixth portion 323 includes a seventh sub-portion 3231 and an eighth sub-portion 3232, the seventh sub-portion 3231 protrudes in a direction away from the second light transmission hole K2, and the eighth sub-portion 3232 may not protrude.

[0070] Optionally, in the embodiment of the present invention, the line width of the fifth portion 313 may be smaller than or equal to the line width W312 of the third portion 312 ; and / or the line width of the sixth portion 323 may be smaller than or equal to the line width W322 of the fourth portion 322 .

[0071] In the embodiment of the present invention, the fifth part 313 may be as follows: Fig.10 and Fig.11 The straight line portion shown, or, Fig.12 The non-straight portion shown has different line widths at different positions. When the fifth portion 313 is set as a non-straight portion, the fifth portion 313 can have different line widths at different positions, wherein the line width of the fifth portion 313 refers to its minimum line width, and similarly, the line width of the sixth portion 323 also refers to its minimum line width.

[0072] Fig.10 and Fig.11 As an example, the line width of the fifth portion 313 is equal to the line width W312 of the third portion 312 ; the line width of the sixth portion 323 is equal to the line width W322 of the fourth portion 322 .

[0073] Fig.12 Taking the line width of the fifth part 313 as smaller than the line width W312 of the third part 312, and the line width of the sixth part 323 as smaller than the line width W322 of the fourth part 322, based on this setting, the fifth part 313 and the sixth part 323 can avoid the second light-transmitting hole K2, which is beneficial to ensure the light transmittance of the second light-transmitting hole K2.

[0074] For example, Fig.10 , Fig.11 and Fig.12 As shown, on the plane where the substrate is located, the orthographic projection of the edge of the fifth portion 313 away from the second light-transmitting hole K2 is in a straight line shape; and / or, the orthographic projection of the sixth portion 323 away from the second light-transmitting hole K2 is in a straight line shape. Based on this arrangement, the uniformity of the shape of the edge of the first signal line 31 and / or the second signal line 32 away from the second light-transmitting hole K2 can be improved.

[0075] Optional, such as Fig.10 , Fig.11 and Fig.12As shown, on the plane where the substrate is located, the edge of the orthographic projection of the third portion 312 away from the second light transmission hole K2 is in a straight line shape, and the edge of the orthographic projection of the fourth portion 322 away from the second light transmission hole K2 is in a straight line shape. Exemplarily, the edge of the orthographic projection of the fifth portion 313 away from the second light transmission hole K2 and the edge of the orthographic projection of the third portion 312 away from the second light transmission hole K2 may be parallel to each other. The edge of the orthographic projection of the sixth portion 323 away from the second light transmission hole K2 and the edge of the orthographic projection of the fourth portion 322 away from the second light transmission hole K2 may be parallel to each other.

[0076] For example, Fig.12 As shown, the fifth part 313 includes a fifth sub-part 3131 and a sixth sub-part 3132. The fifth sub-part 3131 has a notch on one side close to the second light transmission hole K2, and the sixth sub-part 3132 may not include a notch. The sixth part 323 includes a seventh sub-part 3231 and an eighth sub-part 3232. The seventh sub-part 3231 has a notch on one side close to the second light transmission hole K2, and the eighth sub-part 3232 may not include a notch. The fifth sub-part 3131 can be regarded as being formed by removing the part close to the second light transmission hole K2 on the basis of the third part 312. The seventh sub-part 3231 can be regarded as being formed by removing the part close to the second light transmission hole K2 on the basis of the fourth part 322.

[0077] It should be noted that Fig.10 , Fig.11 and Fig.12 The circular shape of the second light-transmitting hole K2 is only for illustration, and the embodiment of the present invention can also design the shape of the light-transmitting hole to be a polygon or an irregular shape according to different design requirements. Correspondingly, the shape of the edge of the fifth portion 313 and the sixth portion 323 near the second light-transmitting hole K2 can also be designed to be a straight line, a folded line, a curve or other shapes, which is not limited in the embodiment of the present invention.

[0078] Exemplarily, in the embodiment of the present invention, the line width of the fifth portion 313 is greater than or equal to the line width W311 of the first portion 311; and / or, the line width W323 of the sixth portion 323 is greater than or equal to the line width W321 of the second portion 321. The line width of each structure refers to the respective minimum line width. Based on this setting, the line widths at different positions of the first signal line 31 and the second signal line 32 can be adapted to the area of ​​the light-transmitting hole set at the corresponding position, which is conducive to ensuring the area of ​​each light-transmitting hole K.

[0079] Fig.12 As an example, the line width of the fifth portion 313 is greater than the line width W311 of the first portion 311 .

[0080] Or, if Fig.13As shown, the line width W313 of the fifth part 313 is equal to the line width W311 of the first part 311; the line width W323 of the sixth part 323 is equal to the line width W321 of the second part 321. Based on this setting, the line width uniformity of the first signal line 31 and the second signal line 32 at different positions can be improved, which is conducive to improving the resistance consistency of the first signal line 31 at different positions, and improving the resistance consistency of the second signal line 32 at different positions, which is conducive to stable transmission of signals.

[0081] For example, Fig.10 , Fig.11 , Fig.12 and Fig.13 As shown, the maximum length of the first light transmission hole K1 in the second direction h12 is W12, and the maximum length of the second light transmission hole K2 in the second direction h12 is W22, wherein W12>W22, so that the area of ​​the first light transmission hole K1 is larger than that of the second light transmission hole K2.

[0082] like Fig.10 , Fig.11 , Fig.12 and Fig.13 As shown, in the second direction h12, the distance between the first portion 311 and the second portion 321 is d12, and the distance between the fifth portion 313 and the sixth portion 323 is d22, wherein the distance between the first portion 311 and the second portion 321 refers to the maximum distance between the edge of the first portion 311 close to the second portion 321 and the edge of the second portion 321 close to the first portion 311. The distance between the fifth portion 313 and the sixth portion 323 refers to the maximum distance between the edge of the fifth portion 313 close to the sixth portion 323 and the edge of the sixth portion 323 close to the fifth portion 313. In the embodiment of the present invention, d12≥d22.

[0083] Fig.10 , Fig.11 , Fig.12 and Fig.13 Taking d12>d22 as an example, based on this setting, the distance between the first part 311 and the second part 321 corresponding to the first light-transmitting hole K1, and the distance between the fifth part 313 and the sixth part 323 corresponding to the second light-transmitting hole K2 can be adapted to the aperture sizes of the first light-transmitting hole K1 and the second light-transmitting hole K2, respectively, so that the space in the display panel can be reasonably utilized.

[0084] Or, if Fig.14 and Fig.15As shown, both are illustrated by d12=d22. In the embodiment of the present invention, by setting d12=d22, on the one hand, the shapes of the first signal line 31 and the second signal line 32 at different positions can be made consistent, which is beneficial to improve the consistency of shape and length, and can make the transmission performance of the signal at different positions consistent. On the other hand, the distance between the second light-transmitting hole K2 with a smaller area and the first signal line 31 can be increased, and / or the distance between the second light-transmitting hole K2 with a smaller area and the second signal line 32 can be increased, which is beneficial to increase the light transmittance of the second light-transmitting hole K2.

[0085] For example, Fig.16 As shown, Fig.16 A simplified schematic diagram of a third signal line, a fourth signal line, a first light-transmitting hole and a second light-transmitting hole is provided for an embodiment of the present invention. The first display area A1 also includes a third signal line 33 and a fourth signal line 34. The third signal line 33 and the fourth signal line 34 both extend along the second direction h12; the third signal line 33 and the fourth signal line 34 are arranged along the first direction h11; the third signal line 33 and the fourth signal line 34 are electrically connected to two adjacent pixel driving circuits 12.

[0086] In the plane where the substrate is located, the orthographic projection of the first light-transmitting hole K1 is located between the orthographic projection of one group of third signal lines 33 and the orthographic projection of the fourth signal line 34 in the first direction h11; the orthographic projection of the second light-transmitting hole K2 is located between the orthographic projection of another group of third signal lines 33 and the orthographic projection of the fourth signal line 34.

[0087] For example, Fig.16 As shown, the maximum length of the first light transmission hole K1 in the first direction h11 is W11, and the maximum length of the second light transmission hole K2 in the first direction h11 is W21, wherein W11>W21; such arrangement makes the area of ​​the first light transmission hole K1 larger than the area of ​​the second light transmission hole K2.

[0088] like Fig.16 As shown, the distance between the third signal line 33 and the fourth signal line 34 located on both sides of the first light transmission hole K1 is d11, and the distance between the third signal line 33 and the fourth signal line 34 located on both sides of the second light transmission hole K2 is d21; the distance between the third signal line 33 and the fourth signal line 34 refers to the maximum distance between the edge of the third signal line 33 close to the fourth signal line 34 and the edge of the fourth signal line 34 close to the third signal line 33. In the embodiment of the present invention, d11≥d21.

[0089] Fig.16Taking d11>d21 as an example, based on this setting method, the distance between the third signal line 33 and the fourth signal line 34 corresponding to the first light-transmitting hole K1, and the distance between the third signal line 33 and the fourth signal line 34 corresponding to the second light-transmitting hole K2 can be adapted to the aperture sizes of the first light-transmitting hole K1 and the second light-transmitting hole K2, respectively, so that the space in the display panel can be reasonably utilized.

[0090] Or, if Fig.17 As shown, Fig.17 Another simplified schematic diagram of a third signal line, a fourth signal line, a first light-transmitting hole, and a second light-transmitting hole provided in an embodiment of the present invention. In an embodiment of the present invention, d11=d21 can be set. On the one hand, the shapes of different third signal lines 33 at different positions can be made consistent, and the shapes of different fourth signal lines 34 at different positions can be made consistent, which is conducive to improving the consistency of the shape and length of signal lines transmitting the same type of signals, and can make the transmission performance of signals at different positions consistent. On the other hand, the distance between the second light-transmitting hole K2 with a smaller area and the third signal line 33 can be increased, and / or the distance between the second light-transmitting hole K2 with a smaller area and the fourth signal line 34 can be increased, so as to increase the light transmission amount of the second light-transmitting hole K2.

[0091] Exemplarily, the signal types transmitted by different third signal lines 33 corresponding to the first light-transmitting hole K1 and the second light-transmitting hole K2 respectively can be the same. For example, both can transmit the above-mentioned data signal Data, that is, both include data signal lines; or, both can also transmit the above-mentioned first power signal PVDD, that is, both include the first power signal line.

[0092] For example, Fig.18 As shown, Fig.18 for Figure 2 In another cross-sectional schematic diagram along BB', the display panel further includes a light-shielding metal 4 located between the light-shielding layer 2 and the substrate 10, and along a direction h2 perpendicular to the plane where the substrate 10 is located, the light-shielding metal 4 does not overlap with the light-transmitting hole K. The light-shielding metal 4 can receive the diffracted light emitted from the light-transmitting hole K and reflect the received diffracted light, and the angle between the propagation direction of the reflected light and the normal of the substrate 10 is smaller than the angle between the diffracted light incident on the light-shielding metal 4 and the normal of the substrate 10.

[0093] Specifically, in the process that the external light is emitted from the first side of the display panel to the second side of the display panel through the light-transmitting hole K, Fig.19 As shown, Fig.19The diagram is a principle diagram of the optical path of external light passing through the light-transmitting hole and the light-shielding metal. The light diffracted through the light-transmitting hole K can be reflected by the side of the light-shielding metal 4. Along the direction parallel to the plane where the substrate is located, the side of the light-shielding metal 4 is located on the side of the light-shielding metal 4 close to the light-transmitting hole K. The angle θ_2 between the propagation direction of the reflected light and the normal of the substrate is smaller than the angle θ_1 between the diffracted light incident on the light-shielding metal 4 and the normal of the substrate 10. That is, the setting of the light-shielding metal 4 can adjust the large-angle diffracted light passing through the above-mentioned light-transmitting hole K to small-angle light, thereby increasing the light intensity entering the optical sensor located on the second side of the display panel and improving the light utilization rate of the external ambient light.

[0094] Exemplarily, the light-shielding metal 4 includes the above-mentioned signal line or the source and drain of the thin film transistor and other structures.

[0095] Optionally, in the embodiment of the present invention, the angle between the side surface and the bottom surface of the light shielding metal 4 is ,in, .

[0096] The embodiment of the present invention is to , the diffracted light whose propagation direction emitted through the light-transmitting hole K and whose angle with the normal of the substrate 10 is greater than or equal to 10° can be emitted toward the side of the shading metal 4, which can increase the diffracted light intensity received by the shading metal 4, and further increase the ambient light intensity reflected into the optical sensor.

[0097] In addition, combined Fig.19 As shown, (2) In the embodiment of the present invention, 92.5°≤ , substituting into the above formula (2) we can get: (3) For example, when N=5, that is, when five light-transmitting holes K with different areas are provided in the light-transmitting hole group 20, the maximum diffraction angle θ1=10° is obtained, and it is substituted into the above formula (3) to obtain θ2≤5°; that is, in the embodiment of the present invention, by setting , the angle between the propagation direction of the light reflected by the first light-shielding metal 41 and the substrate 10 can be less than or equal to 5°, which can increase the ambient light intensity entering the optical sensor and improve the working performance of the optical sensor.

[0098] Optional, such as Fig.18As shown, along the direction parallel to the plane where the substrate 10 is located, the distance between the edge of the light shielding metal 4 and the light transmission hole K is d3, and along the direction perpendicular to the plane where the substrate 10 is located, the distance between the light shielding metal 4 and the light shielding layer 2 is h, where d3≤h×tan10°. Based on this setting, the diffracted light with a large angle emitted from the light transmission hole K, such as the diffracted light with an angle between the propagation direction and the normal of the substrate 10 greater than or equal to 10°, can be emitted to the side of the corresponding light shielding metal 4, and further reflected by the side of the light shielding metal 4, which is conducive to improving the utilization rate of the diffracted light emitted through the light transmission hole K.

[0099] For example, the light transmission hole group 20 includes a first light transmission hole K1 and a second light transmission hole K2. Fig.18 As shown, the above-mentioned light shielding metal 4 includes a first light shielding metal 41 and a second light shielding metal 42. In a direction perpendicular to the plane where the substrate 10 is located, the first light shielding metal 41 does not overlap with the first light transmission hole K1; the second light shielding metal 42 does not overlap with the second light transmission hole K2. The first light shielding metal 41 can receive diffracted light emitted from the first light transmission hole K1, and the second light shielding metal 42 can receive diffracted light emitted from the second light transmission hole K2.

[0100] In the embodiment of the present invention, the angle between the side surface and the bottom surface of the first light shielding metal 41 is The angle between the side surface and the bottom surface of the second light shielding metal 42 is ,in, , so that the diffracted light whose propagation direction emitted through the first light-transmitting hole K1 and whose angle with the normal line of the substrate 10 is greater than or equal to 10° can be emitted more toward the side of the first light-shielding metal 41, that is, the intensity of the diffracted light received by the first light-shielding metal 41 is increased, thereby increasing the intensity of the ambient light reflected by the first light-shielding metal 41 and entering the optical sensor. And / or, , so that the diffraction light whose propagation direction emitted through the second light-transmitting hole K2 and the angle between the normal line of the substrate 10 is greater than or equal to 10° can be emitted more toward the side surface of the second light-shielding metal 42, that is, the diffraction light intensity received by the second light-shielding metal 42 is increased, thereby increasing the ambient light intensity reflected by the second light-shielding metal 42 and entering the optical sensor.

[0101] like Fig.18As shown, the distance between the first light-shielding metal 41 and the edge of the first light-transmitting hole K1 is d13, and the distance between the second light-shielding metal 42 and the edge of the second light-transmitting hole K2 is d23; along the direction perpendicular to the plane where the substrate 10 is located, the distance between the second light-shielding metal 42 and the first light-shielding layer 21 is h1, and the distance between the second light-shielding metal 42 and the first light-shielding layer 21 is h2, wherein d13≤h1×tan10°, so that the diffracted light with a large angle emitted from the first light-transmitting hole K1 can be emitted to the side of the first light-shielding metal 41, and further reflected by the side of the first light-shielding metal 41, which is beneficial to improve the utilization rate of the diffracted light emitted through the first light-transmitting hole K1. And / or, the embodiment of the present invention can also make d23≤h2×tan10°, so that the diffraction light with a large angle emitted from the second light-transmitting hole K2 can be emitted to the side of the second light-shielding metal 42, and further reflected by the side of the second light-shielding metal 42, which is beneficial to improve the utilization rate of the diffraction light emitted through the second light-transmitting hole K2.

[0102] Based on the same inventive concept, an embodiment of the present invention further provides a display device, such as Fig. 20 As shown, Fig. 20 A schematic diagram of a display device provided in an embodiment of the present invention includes an optical sensor 5 and the above-mentioned display panel 100. The orthographic projection of the optical sensor 5 on the plane where the substrate is located is at least partially located in the first display area A1. The specific structure of the display panel 100 has been described in detail in the above embodiment and will not be repeated here. Of course, Fig. 20 The display device shown is only for illustration, and the display device may be any device with a display function, such as a mobile phone, a tablet computer, a laptop computer, an e-book, a television, a smart watch, etc. The embodiments of the present invention are not limited to this.

[0103] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A display panel, characterized in that: It includes a first display area; the first display area includes a plurality of sub-pixels, and the sub-pixels include light-emitting elements; The display panel comprises: substrate; A light-shielding layer located on one side of the substrate, the light-shielding layer includes a plurality of light-transmitting hole groups located in the first display area, the light-transmitting hole groups are arranged in an array along a first direction and a second direction, the light-transmitting hole groups include N light-transmitting holes arranged along the first direction and having different areas, and along a direction perpendicular to the plane where the display panel is located, the light-transmitting holes do not overlap with the light-emitting elements; wherein N is an integer, and N≥2.

2. The display panel according to claim 1, characterized in that: Along the first direction, the distance between two adjacent light-transmitting hole groups is equal to the distance between two adjacent light-transmitting holes in the same light-transmitting hole group.

3. The display panel according to claim 1, characterized in that: The light shielding layer comprises a first light shielding layer and a second light shielding layer, wherein the second light shielding layer is located on a side of the first light shielding layer close to the substrate; The light-transmitting hole comprises a first sub-light-transmitting hole located in the first light-shielding layer and a second sub-light-transmitting hole located in the second light-shielding layer, and in the plane where the substrate is located, the orthographic projection of the first sub-light-transmitting hole and the orthographic projection of the second sub-light-transmitting hole at least partially overlap; On the plane where the substrate is located, an area of ​​an orthographic projection of the second light-transmitting sub-hole is greater than or equal to an area of ​​an orthographic projection of the first light-transmitting sub-hole.

4. The display panel according to claim 3, characterized in that: The display panel includes a black matrix and a pixel definition layer; The black matrix is ​​located on a side of the light emitting element away from the substrate; the black matrix further comprises a first opening, and the first opening overlaps the light emitting element along a direction perpendicular to the plane where the display panel is located; The pixel definition layer includes a second opening, the light emitting element includes a light emitting layer, and at least a portion of the light emitting layer is located in the second opening; The first light shielding layer includes the black matrix, and the second light shielding layer includes the pixel definition layer.

5. The display panel according to claim 1, characterized in that: The sub-pixel further includes a pixel driving circuit electrically connected to the light-emitting element; In the plane where the substrate is located, the orthographic projection of the light-transmitting hole is located between the orthographic projections of two adjacent pixel driving circuits in the first direction. Two adjacent pixel driving circuits are symmetrically designed.

6. The display panel according to claim 5, characterized in that: The first display area further includes a first signal line and a second signal line electrically connected to the pixel driving circuit, the first signal line and the second signal line extending along the first direction; the first signal line and the second signal line are arranged along the second direction; On the plane where the substrate is located, the orthographic projections of the plurality of light-transmitting holes in the same light-transmitting hole group are located between the orthographic projection of the first signal line and the orthographic projection of the second signal line; The plurality of light-transmitting holes in the same light-transmitting hole group include at least a first light-transmitting hole, The first signal line includes a first portion; on the plane where the substrate is located, the orthographic projection of the first portion is close to the edge of the first light-transmitting hole and surrounds the orthographic projection of the first light-transmitting hole. The second signal line includes a second portion; on the plane where the substrate is located, an orthographic projection of the second portion is close to an edge of the first light-transmitting hole and surrounds a portion of the orthographic projection of the first light-transmitting hole.

7. The display panel according to claim 6, characterized in that: The first signal line includes a third portion; the second signal line includes a fourth portion; In the plane where the substrate is located, the orthographic projection of the third portion does not overlap with the orthographic projections of the plurality of light-transmitting holes in the same light-transmitting hole group in the second direction, and the orthographic projection of the fourth portion does not overlap with the orthographic projections of the plurality of light-transmitting holes in the same light-transmitting hole group in the second direction; The line width of the first portion is smaller than the line width of the third portion; And / or, the line width of the second portion is smaller than the line width of the fourth portion.

8. The display panel according to claim 7, characterized in that: On the plane where the substrate is located, the orthographic projection of the first portion is in a straight line away from the edge of the first light-transmitting hole; and / or, On the plane where the substrate is located, the orthographic projection of the second portion is in a straight line away from the edge of the first light-transmitting hole.

9. The display panel according to claim 6, characterized in that: The first portion protrudes in a direction away from the first light-transmitting hole; and / or the second portion protrudes in a direction away from the first light-transmitting hole.

10. The display panel according to claim 6, characterized in that: The plurality of light-transmitting holes in the same light-transmitting hole group further include at least a second light-transmitting hole, The first signal line further includes a fifth portion corresponding to the second light-transmitting hole, and the second signal line further includes a sixth portion corresponding to the second light-transmitting hole; On the plane where the substrate is located, the orthographic projection of the edge of the fifth portion close to the second light-transmitting hole is a straight line; and / or, on the plane where the substrate is located, the orthographic projection of the edge of the sixth portion close to the second light-transmitting hole is a straight line.

11. The display panel according to claim 6, characterized in that: The plurality of light-transmitting holes in the same light-transmitting hole group further include at least a second light-transmitting hole, The first signal line further includes a fifth portion; on the plane where the substrate is located, the orthographic projection of the fifth portion is close to the edge of the second light-transmitting hole and surrounds a portion of the orthographic projection of the second light-transmitting hole. The second signal line further includes a sixth portion; on the plane where the substrate is located, an orthographic projection of the sixth portion is close to an edge of the second light-transmitting hole and surrounds a portion of the orthographic projection of the second light-transmitting hole.

12. The display panel according to claim 11, characterized in that: The fifth portion protrudes in a direction away from the second light-transmitting hole; and / or the sixth portion protrudes in a direction away from the second light-transmitting hole.

13. The display panel according to claim 11, characterized in that: The first signal line includes a third portion; the second signal line includes a fourth portion; In the plane where the substrate is located, the orthographic projection of the third portion does not overlap with the orthographic projections of the plurality of light-transmitting holes in the same light-transmitting hole group in the second direction, and the orthographic projection of the fourth portion does not overlap with the orthographic projections of the plurality of light-transmitting holes in the same light-transmitting hole group in the second direction; The line width of the fifth portion is smaller than the line width of the third portion; And / or, the line width of the sixth portion is smaller than the line width of the fourth portion.

14. The display panel according to claim 13, characterized in that: On the plane where the substrate is located, the orthographic projection of the fifth portion is in a straight line away from the edge of the second light-transmitting hole; and / or, On the plane where the substrate is located, the orthographic projection of the sixth portion is in a straight line away from the edge of the second light-transmitting hole.

15. The display panel according to claim 13, characterized in that: The line width of the fifth portion is smaller than the line width of the first portion; and / or the line width of the sixth portion is smaller than the line width of the second portion.

16. The display panel according to claim 11, characterized in that: The maximum length of the first light-transmitting hole in the second direction is W12, and the maximum length of the second light-transmitting hole in the second direction is W22, wherein W12>W22; The distance between the first part and the second part is d12, and the distance between the fifth part and the sixth part is d22, wherein, d12=d22.

17. The display panel according to claim 6, characterized in that: The first display area further includes a third signal line and a fourth signal line, the third signal line and the fourth signal line both extend along the second direction; the third signal line and the fourth signal line are arranged along the first direction; The third signal line and the fourth signal line are electrically connected to two adjacent pixel driving circuits. In the plane where the substrate is located, the orthographic projection of the third signal line is located on a side of the orthographic projection of one of the pixel driving circuits away from the orthographic projection of the light-transmitting hole in the first direction; the orthographic projection of the fourth signal line is located on a side of the orthographic projection of another pixel driving circuit away from the orthographic projection of the light-transmitting hole in the first direction.

18. The display panel according to claim 17, characterized in that: The plurality of light-transmitting holes in the same light-transmitting hole group further include at least a second light-transmitting hole, The maximum length of the first light-transmitting hole in the first direction is W11, and the maximum length of the second light-transmitting hole in the first direction is W21, wherein W11>W21; The distance between the third signal line and the fourth signal line located on both sides of the first light-transmitting hole is d11, and the distance between the third signal line and the fourth signal line located on both sides of the second light-transmitting hole is d21; wherein, d11=d21.

19. The display panel according to claim 1, characterized in that: It also includes a light-shielding metal located between the light-shielding layer and the substrate, Along a direction perpendicular to the plane where the substrate is located, the light-shielding metal and the light-transmitting hole do not overlap.

20. The display panel according to claim 19, characterized in that: The angle between the side and bottom of the light-shielding metal is ,in, .

21. The display panel according to claim 19, characterized in that: Along the direction parallel to the plane where the substrate is located, the distance between the light shielding metal and the edge of the light transmission hole is d3, Along the direction perpendicular to the plane where the substrate is located, the distance between the light-shielding metal and the light-shielding layer is h, where: 。 22. The display panel according to claim 1, characterized in that: 2≤N≤6。 23. The display panel according to claim 1, characterized in that: Also includes a second display area; the second display area at least partially surrounds the first display area; the second display area includes a plurality of sub-pixels, and the number of the sub-pixels in the second display area is greater than or equal to the number of the sub-pixels in the first display area; The first display area includes an optical sensor setting area.

24. The display panel according to claim 1, characterized in that: The N light-transmitting holes arranged along the first direction and having different areas include a first light-transmitting hole to an Nth light-transmitting hole; Along the second direction, the first light-transmitting holes to the Nth light-transmitting holes are alternately arranged in sequence.

25. A display device, characterized in that: It comprises an optical sensor and the display panel according to any one of claims 1 to 24; the orthographic projection of the optical sensor on the plane where the substrate is located is at least partially located in the first display area.

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