Display panel and display device

Abstract

Embodiments of the present application provide a display panel and a display device, and relate to the technical field of display, which are used to reduce the diffraction angle of light passing through the first display area and improve 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 each sub-pixel comprises a light emitting element; the display panel comprises a substrate and a light shielding layer located on one side of the substrate; the light shielding layer comprises a plurality of light transmission hole groups arranged in a first direction and a second direction on the first display area; each light transmission hole group comprises N light transmission holes arranged in the first direction and having different areas; and the light transmission holes do not overlap 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 technical field of display, in particular to a display panel and a display device. BACKGROUND

[0002] With the continuous development of display technology, display devices with optical sensors having photosensitive function are also increasing. At present, in order to improve the screen ratio of the display panel, the optical sensor is usually integrated in the area where the display area of the display panel is located. 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 the related technical personnel. SUMMARY

[0003] Therefore, 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, the embodiments of the present application provide a display panel, comprising a first display area; the first display area comprises a plurality of sub-pixels, and each sub-pixel comprises a light emitting element.

[0005] The display panel comprises:

[0006] a substrate;

[0007] a light shielding layer located on one side of the substrate, the light shielding layer comprising a plurality of light transmission hole groups located in the first display area, the light transmission hole groups being arranged in an array along a first direction and a second direction, each light transmission hole group comprising N light transmission holes arranged along the first direction and having different areas, and the light transmission holes and the light emitting elements do not overlap in a direction perpendicular to the plane where the display panel is located; wherein N is an integer, and N≥2.

[0008] In a second aspect, the embodiments of the present application provide a display device, comprising an optical sensor and the display panel described above; the orthogonal projection of the optical sensor on the plane where the substrate is located is at least partially located in the first display area.

[0009] By adopting the scheme provided in the embodiments of the present application, the first display area comprising the light transmission hole groups is arranged in the display panel. When the display panel is working, the light in the external environment can pass through the light transmission holes in the light transmission hole groups and be incident on the optical sensor located on the other side from one side of the display panel.

[0010] Moreover, by making the areas of the plurality of light transmission holes in the same light transmission hole group different, compared with the way of setting a plurality of light transmission holes with the same area in the light transmission hole group, the distance between the light transmission holes with the same shape and area in the adjacent two light transmission hole groups can be increased under the condition that the distance between the adjacent two light transmission holes is the same, for example, when the light transmission hole group includes the first light transmission hole and the second light transmission hole with different areas, the distance between the adjacent two first light transmission holes can be increased, and the distance between the adjacent two second light transmission holes can be increased, the diffraction angle of the light rays diffracted at the edges of the light transmission holes can be reduced, thereby the possibility of the diffracted light rays passing through the first display area of the display panel into the optical sensor can be increased, the light transmittance of the first display area can be improved, the light intensity entering the optical sensor can be increased, and the working performance of the optical sensor can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor under the premise of the drawings.

[0012] Figure 1 A schematic diagram of a display panel provided by the embodiments of the present application;

[0013] Figure 2 A schematic diagram of the first display area in Figure 1 A schematic diagram of the first display area in

[0014] Figure 3 A schematic diagram of the first display area in Figure 2 A schematic diagram of the first display area in

[0015] Figure 4 A simulation comparison diagram of diffracted light intensity provided by the embodiments of the present application;

[0016] Figure 5 A schematic diagram of the first display area in Figure 1 A schematic diagram of the first display area in

[0017] Figure 6 A diffracted curve diagram under different grating constants provided by the embodiments of the present application;

[0018] Figure 7 A schematic diagram of the second display area in Figure 1 A schematic diagram of the second display area in

[0019] Figure 8 A wiring schematic diagram of the first display area provided by the embodiments of the present application;

[0020] Figure 9A display device provided by an embodiment of the present application comprises a display panel and a pixel driving circuit provided on the display panel. Figure 8 A schematic diagram of a corresponding pixel driving circuit;

[0021] Figure 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 by an embodiment of the present application;

[0022] Figure 11 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 by another embodiment of the present application;

[0023] Figure 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 by yet another embodiment of the present application;

[0024] Figure 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 by yet another embodiment of the present application;

[0025] Figure 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 by yet another embodiment of the present application;

[0026] Figure 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 by yet another embodiment of the present application;

[0027] Figure 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 by an embodiment of the present application;

[0028] Figure 17 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 by another embodiment of the present application;

[0029] Figure 18 A schematic diagram of a display device provided by an embodiment of the present application. Figure 2 Another schematic diagram of a cross section along BB';

[0030] Figure 19 A schematic diagram of a light path of external light passing through a light-transmitting hole and a light-shielding metal.

[0031] Figure 20 A schematic diagram of a display device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0032] In order to better understand the technical solutions of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0033] It should be understood that the described embodiments are merely some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0034] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0035] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0036] This invention provides a display panel, such as... Figure 1 As shown, Figure 1 This is a schematic diagram of a display panel provided in an embodiment of the present invention. The display panel includes a first display area A1. (In conjunction with...) Figure 2 and Figure 3 As shown, Figure 2 for Figure 1 An enlarged schematic diagram of the first display area A1 in the image. Figure 3 for Figure 2 A schematic cross-sectional view along BB' shows a first display area A1 including sub-pixels, each sub-pixel including a light-emitting element 11. Exemplarily, the display panel includes light-emitting elements of multiple colors. Figure 2 The illustration shows a plurality of light-emitting elements 11 including 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 can be a red light-emitting element, a blue light-emitting element, and a green light-emitting element, respectively.

[0037] like Figure 3As shown, the display panel comprises: a substrate 10; a light shielding layer 2 located on one side of the substrate 10, the light shielding layer 2 comprising a plurality of light transmission hole groups 20 arranged in a first direction h11 and a second direction h12, the light transmission hole group 20 comprising N light transmission holes K arranged in 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 transmission 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 transmission hole K and the orthographic projection of the light emitting element 11 do not overlap. The area of the light transmission hole K refers to the area of the orthographic projection of the light transmission hole K in the plane where the substrate 10 is located. Figure 2 As an example, N=2, that is, the light transmission hole group 20 comprises a first light transmission hole K1 and a second light transmission hole K2, and the area of the orthographic projection of the first light transmission hole K1 in the plane where the substrate 10 is located is greater than the area of the orthographic projection of the second light transmission hole K2 in the plane where the substrate 1 is located.

[0038] As an example, the first display area A1 comprises an optical sensor arrangement area. That is, the optical sensor can be arranged in the first display area A1 of the display panel, and optionally, the optical sensor can be located on the side of the display panel away from the light emitting side.

[0039] The embodiment of the present application arranges the first display area A1 comprising the light transmission hole group 20 in the display panel, and when the display panel is working, the light in the external environment can pass through the light transmission hole K in the light transmission hole group 20 to the optical sensor located on the other side from one side of the display panel. The optical sensor can perform corresponding operations according to the light intensity of the received external environment light. For example, the optical sensor can adjust the brightness of the display panel according to the received light intensity. For example, in the case of strong ambient brightness, the display brightness of the display panel can be increased, so that the user can clearly see the picture; in the case of weak ambient brightness, the display brightness of the display panel can be reduced to reduce power consumption.

[0040] In the process of the light in the external environment passing through each film layer in the display panel, in addition to the transmission phenomenon of passing through the light transmission hole K, the diffraction phenomenon of the light propagating around the edge of the light transmission hole also occurs. The plurality of light transmission holes with the same shape and the same area in different light transmission hole groups 20 can be used as a grating. As shown in the figure, L1 illustrates the diffraction light propagating around the edge of the light transmission hole K. According to the grating equation: Figure 3

[0041] (1)

[0042] ​Wherein, L is the distance between two adjacent light transmission holes K with the same shape and the same area, which can also be understood as the grating constant; θ is the diffraction angle of the light, k is the diffraction order, which is 0, ±1, ±2, …; λ is the wavelength of the light. In the embodiment of the application, the areas of the plurality of light transmission holes K in the same light transmission hole group 20 are different. Compared with the way of arranging a plurality of light transmission holes with the same area in the light transmission hole group 20, in the case that the distance between two adjacent light transmission holes K is the same and is d, the distance between the light transmission holes with the same shape and the same area in two adjacent light transmission hole groups 20 can be increased to Nd. For example, when N = 2, that is, the light transmission hole group 20 includes a first light transmission hole K1 and a second light transmission hole K2 with different areas, the distance between two adjacent first light transmission holes K1 can be increased to 2d, and the distance between two adjacent second light transmission holes K2 can be increased to 2d, that is, the grating constant L in the above formula (1) is increased, and in the case that the diffraction order k and the wavelength λ are constant, the diffraction angle θ of the light diffracted at the edge of the light transmission hole can be reduced. If the diffraction angle is too large, the diffracted light will be absorbed by the light shielding structure located in the light transmission area in the subsequent film layer and cannot be emitted to the optical sensor. The light transmission area refers to an area including a light transmission hole or other high-transmission material. The light transmission area can be located between two adjacent light emitting elements. Therefore, based on the arrangement provided in the embodiment of the application, the diffraction angle of the diffracted light can be reduced, so that the possibility of the diffracted light passing through the first display area A1 of the display panel into the optical sensor can be increased, the light transmittance of the first display area A1 can be improved, the light intensity entering the optical sensor can be increased, and the working performance of the optical sensor can be improved.

[0043] It should be noted that in the embodiment of the application, the distance between two adjacent light transmission holes K refers to the distance between the centers of the two adjacent light transmission holes K. If the geometric shape of the light transmission hole K is a regular geometric shape, the center of the light transmission hole K coincides with the geometric center thereof. For example, if the shape of the light transmission hole K is a parallelogram, the intersection of the two diagonals of the parallelogram is the geometric center thereof. If the geometric shape of the light transmission hole K is an asymmetric irregular geometric shape, the center thereof can be determined by related technologies.

[0044] The regular pattern (regular geometric shape) in the embodiment of the application can be a center-symmetric pattern or an axis-symmetric pattern with two or more symmetry axes. For example, an ellipse, a parallelogram (neither a rectangle nor a diamond), a circle, a rounded rectangle, a regular polygon, a rectangle, a diamond, etc. are all regular patterns. For a center-symmetric pattern, the center-symmetric point is the center; for an axis-symmetric pattern with two or more symmetry axes, the intersection of the two symmetry axes is the center. Patterns other than regular patterns are irregular patterns.

[0045] In some embodiments, the geometric centers of the light transmission holes K arranged along the first direction are located on a straight line, and / or the geometric centers of the light transmission holes K arranged along the second direction are located on a straight line.

[0046] In combination Figure 4 As shown, Figure 4 A diffraction light intensity simulation comparison diagram provided by an embodiment of the present application, wherein the abscissa is the diffraction order, and the ordinate is the light intensity. Scheme A indicates that the first display area A1 includes first light transmission holes with a diameter of 12 μm and second light transmission holes with a diameter of 12.1 μm, and the first light transmission holes and the second light transmission holes are arranged alternately. Scheme B indicates that the first display area A1 includes only first light transmission holes with a diameter of 12 μm. The total number of the light transmission holes in schemes A and B is the same, and the distance between two adjacent light transmission holes in schemes A and B is equal. Based on the simulation results, it can be obtained that the intensity contrast of the central area C under the two schemes satisfies: Wherein A represents the intensity of the central area of scheme A, B represents the intensity of the central area of scheme B, and the central area refers to the range of diffraction angles within-5° to 5°.

[0047] Considering that the sum of the areas of the light transmission holes in scheme A is large, it satisfies:

[0048]

[0049] Wherein S A represents the sum of the areas of the light transmission holes in scheme A, and S B represents the sum of the areas of the light transmission holes in scheme B. Therefore, after deducting the area factor, it can be seen that the transmittance improvement of scheme A compared with scheme B satisfies 5.04%-1.67%=3.37%, that is, by allowing the areas of the multiple light transmission holes in the same light transmission hole group 20 to be different, the transmittance of the first display area A1 can be improved in the embodiment of the present application.

[0050] For example, in the embodiment of the present application, the above N satisfies: 2≤N≤6. Figure 2 For N=2, or as Figure 5 shown, Figure 5 for Figure 1 another enlarged schematic diagram of the first display area in the above Figure 5 , N=4, that is, the light transmission hole group 20 includes four light transmission holes K with different areas, and the four light transmission holes K are respectively a first light transmission hole K1, a second light transmission hole K2, a third light transmission hole K3 and a fourth light transmission hole K4. Based on the arrangement mode shown in

[0051] For example, as Figure 6As shown, Figure 6 The diffraction curve diagram with different grating constants provided by the embodiment of the present application can be seen, with the grating constant increasing from d to 5d, the difference of the diffraction angles of the adjacent two diffraction curves under the same diffraction order gradually decreases, that is, the benefit of reducing the diffraction angle by increasing the grating constant gradually decreases, and the embodiment of the present application can avoid excessive setting of the light transmission holes with different areas in the first display area A1 by letting N≤6, since the light transmission holes need to avoid the setting of the light emitting elements, the design method is beneficial to setting more light emitting elements in the display panel, and is beneficial to improving the resolution of the display panel.

[0052] Optionally, when N≥3, that is, when the light transmission hole group 20 includes at least three light transmission holes K with different areas, the embodiment of the present application can arrange the plurality of light transmission holes K in the first direction h11 in the order from large to small or from small to large in area, or the embodiment of the present application can also arrange the plurality of light transmission holes K without the order of the size of the area, so as to increase the irregularity of the arrangement of the light transmission holes K and weaken the diffraction phenomenon.

[0053] For example, the N light transmission holes K with different areas arranged in the first direction h11 in the light transmission hole group 20 include the first light transmission hole K1 to the Nth light transmission hole; in the embodiment of the present application, the first light transmission hole K1 to the Nth light transmission hole are alternately arranged in the second direction h12.

[0054] For example, when N=4, as shown, Figure 5 The light transmission hole group 20 includes the first light transmission hole K1, the second light transmission hole K2, the third light transmission hole K3 and the fourth light transmission hole K4 arranged in the first direction h11. The first light transmission hole K1, the second light transmission hole K2, the third light transmission hole K3 and the fourth light transmission hole K4 are alternately arranged in the second direction h12. Based on the setting method, the arrangement rule of the light transmission holes in the second direction h12 can be the same as that of the light transmission holes in the first direction h11. That is, in Figure 5 the first direction h11 and the second direction h12, the plurality of light transmission holes K are alternately arranged in the order of the first light transmission hole K1, the second light transmission hole K2, the third light transmission hole K3 and the fourth light transmission hole K4.

[0055] Exemplarily, in the embodiment of the present application, the distance between two adjacent light transmission holes K in the same light transmission hole group 20 is equal to the distance between two adjacent light transmission hole groups 20. Here, the distance between two adjacent light transmission holes K refers to the distance between the geometric centers of the two adjacent light transmission holes K, and the distance between two adjacent light transmission hole groups 20 refers to the distance between the geometric centers of the two closest light transmission holes K in the two light transmission hole groups 20 respectively. When N=4, i.e., the light transmission hole group 20 includes a first light transmission hole K1, a second light transmission hole K2, a third light transmission hole K3 and a fourth light transmission hole K4, as shown in Figure 5 , 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 one light transmission hole group 20 is also d. Based on this arrangement, the distance between any two light transmission holes K with the same area in two adjacent light transmission hole groups 20 can be made equal. For example, when the light transmission hole group 20 includes a first light transmission hole K1 and a second light transmission hole K2, the distance between two adjacent first light transmission holes K1 can be made equal to the distance between two adjacent second light transmission holes K2, so that the diffraction angle of light passing through the first light transmission hole K1 can be made equal to the diffraction angle of light passing through the second light transmission hole K2, and further, the light intensity of light passing through the first light transmission hole K1 and the second light transmission hole K2 received by the optical sensor can be made consistent, which is beneficial to improve the consistency of light intensity received by different parts of the optical sensor and improve the working performance of the optical sensor.

[0056] Exemplarily, as shown in Figure 1 , 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.

[0057] In the embodiment of the present application, the number of sub-pixels of the second display area A2 is greater than or equal to the number of sub-pixels of the first display area A1. Exemplarily, in combination with Figure 2 and Figure 7 , as shown in Figure 7 , the number of sub-pixels of the second display area A2 is greater than the number of sub-pixels of the first display area A1. Figure 1An enlarged schematic diagram of the second display area A2 shows that the density of light-emitting elements in the second display area A2 is greater than that in the first display area A1. That is, the pixel density in the second display area A2 is greater than that in the first display area A1. Based on this arrangement, the light transmittance of the first display area A1 can be increased, making it greater than or equal to the light transmittance of the second display area A2. This increases the light intensity entering the optical sensor corresponding to the first display area A1, improving the working performance of the optical sensor. On the other hand, it ensures the resolution of the second display area A2, giving it 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, enabling the display panel to achieve a full-screen display effect.

[0058] For example, such as Figure 7 As shown, the second display area A2 may not include the aforementioned light-transmitting hole.

[0059] 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. This embodiment of the invention does not limit this.

[0060] For example, such as Figure 3 As shown, the light-shielding layer 2 includes a first light-shielding layer 21 and a second light-shielding layer 22. Along the direction h2 perpendicular to the plane where the substrate 10 is located, the second light-shielding layer 22 is located on the side of the first light-shielding layer 21 that is close to the substrate 1.

[0061] The aforementioned 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 distinction, the first sub-light-transmitting hole in the first light-transmitting hole K1 is labeled K11, the second sub-light-transmitting hole in the first light-transmitting hole K1 is labeled K12, the first sub-light-transmitting hole in the second light-transmitting hole K2 is labeled K21, and the second sub-light-transmitting hole in the second light-transmitting hole K2 is labeled K22. In the plane where the substrate 10 is located, the orthographic projections of the first sub-light-transmitting hole and 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 projections of the first sub-light-transmitting hole K11 and the second sub-light-transmitting hole K12 in the first light-transmitting hole K1 at least partially overlap, and the orthographic projections of the first sub-light-transmitting hole K21 and the second sub-light-transmitting hole K22 in the second light-transmitting hole K2 at least partially overlap.

[0062] In the embodiment of the present application, the area of the second sub-light-transmitting hole is greater than or equal to the area of the first sub-light-transmitting hole. In the plane where the substrate 10 is located, the second sub-light-transmitting hole can cover the first sub-light-transmitting hole in the embodiment of the present application. In the process of the external light rays being incident on the optical sensor, the external light rays first pass through the first sub-light-transmitting hole and then pass through the second sub-light-transmitting hole. Based on the arrangement provided in the embodiment of the present application, the large-angle diffraction light rays that are diffraction light rays at 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 diffraction light rays can smoothly be incident on the optical sensor, which is beneficial to improving the light intensity received by the optical sensor and improving the working performance of the optical sensor.

[0063] For example, as shown in FIG. 3, the display panel includes a pixel definition layer (PDL) 23 and a black matrix (BM) 24. In the embodiment of the present application, the first light-blocking layer 21 includes the black matrix 24, and the second light-blocking layer 22 includes the pixel definition layer 23. That is, the first sub-light-transmitting hole is included in the black matrix 24, and the second sub-light-transmitting hole is included in the pixel definition layer 23. Figure 3

[0064] For example, as shown in FIG. 3, the display panel includes a pixel definition layer (PDL) 23 and a black matrix (BM) 24. In the embodiment of the present application, the first light-blocking layer 21 includes the black matrix 24, and the second light-blocking layer 22 includes the pixel definition layer 23. That is, the first sub-light-transmitting hole is included in the black matrix 24, and the second sub-light-transmitting hole is included in the pixel definition layer 23. Figure 3

[0065] For example, as shown in FIG. 3, the display panel includes a pixel definition layer (PDL) 23 and a black matrix (BM) 24. In the embodiment of the present application, the first light-blocking layer 21 includes the black matrix 24, and the second light-blocking layer 22 includes the pixel definition layer 23. That is, the first sub-light-transmitting hole is included in the black matrix 24, and the second sub-light-transmitting hole is included in the pixel definition layer 23. Figure 3

[0066] For example, as shown in FIG. 3, the display panel includes a pixel definition layer (PDL) 23 and a black matrix (BM) 24. In the embodiment of the present application, the first light-blocking layer 21 includes the black matrix 24, and the second light-blocking layer 22 includes the pixel definition layer 23. That is, the first sub-light-transmitting hole is included in the black matrix 24, and the second sub-light-transmitting hole is included in the pixel definition layer 23. Figure 3

[0067] For example, as shown in FIG. 3, the display panel includes a pixel definition layer (PDL) 23 and a black matrix (BM) 24. In the embodiment of the present application, the first light-blocking layer 21 includes the black matrix 24, and the second light-blocking layer 22 includes the pixel definition layer 23. That is, the first sub-light-transmitting hole is included in the black matrix 24, and the second sub-light-transmitting hole is included in the pixel definition layer 23. Figure 8 Figure 8 ​​​​​This is a wiring diagram of a first display area provided in an embodiment of the present invention. The sub-pixel further includes a pixel driving circuit 12 electrically connected to a light-emitting element. The pixel driving circuit 12 controls the driving current of the light-emitting element, thereby adjusting the brightness of the light-emitting element. In this embodiment, on 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 on the first direction h11, wherein the two adjacent pixel driving circuits 12 are symmetrically designed. Symmetrical design refers to the fact that the identical transistors in the two adjacent pixel driving circuits 12 are symmetrically designed about a symmetry axis extending along the second direction h12.

[0068] For example, such as Figure 8 and Figure 9 As shown, Figure 9 A method provided for embodiments of the present invention and Figure 8 The corresponding pixel driving circuit diagram shows that 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-emitting control transistor M5, a second light-emitting control transistor M6, and an anode reset transistor M7. The gate reset transistor M3, in response to the first scan signal S1, provides a reset signal Ref to the gate of the driving transistor M2. The anode reset transistor M7, in response to the first scan signal S1, provides a reset signal Ref to the anode of the light-emitting element 11. The data writing transistor M1, in response to the second scan signal S2, provides a data signal Data to the first terminal of the driving transistor M2. The threshold compensation transistor M4, in response to the second scan signal S2, is electrically connected to the second terminal and the gate of the driving transistor M2. The first light-emitting control transistor M5, in response to the light-emitting control signal EM, provides a first power supply signal PVDD to the first terminal of the driving transistor M2. The second light-emitting control transistor M6, in response to the light-emitting control signal EM, is electrically connected to the second terminal of the driving transistor M2 and the light-emitting element.

[0069] like Figure 8 As shown, the display panel also includes multiple signal lines electrically connected to the pixel driving circuit 12. The signal lines include a first scan line S1 (which uses the same marking as the first scan signal it transmits, the same below), a second scan line S2, an EM light emission control line, a Data signal line Data, a first power signal line PVDD, and a reset signal line Ref, etc.

[0070] The same transistors in the above-mentioned two adjacent pixel driving circuits 12 are symmetrically designed, including: the data writing transistor M1 in one of the pixel driving circuits 12 and the data writing transistor M1 in the adjacent other pixel driving circuit 12 are symmetric about the symmetry axis X extending along the second direction h12; the driving transistor M2 in one of the pixel driving circuits 12 and the driving transistor M2 in the adjacent other pixel driving circuit 12 are symmetric about the symmetry axis X extending along the second direction h12; the gate reset transistor M3 in one of the pixel driving circuits 12 and the gate reset transistor M3 in the adjacent other pixel driving circuit 12 are symmetric about the symmetry axis X extending along the second direction h12; the threshold compensation transistor M4 in one of the pixel driving circuits 12 and the threshold compensation transistor M4 in the adjacent other pixel driving circuit 12 are symmetric about the symmetry axis X extending along the second direction h12; the first light emitting control transistor M5 in one of the pixel driving circuits 12 and the first light emitting control transistor M5 in the adjacent other pixel driving circuit 12 are symmetric about the symmetry axis X extending along the second direction h12; the second light emitting control transistor M6 in one of the pixel driving circuits 12 and the second light emitting control transistor M6 in the adjacent other pixel driving circuit 12 are symmetric about the symmetry axis X extending along the second direction h12; and the anode reset transistor M7 in one of the pixel driving circuits 12 and the anode reset transistor M7 in the adjacent other pixel driving circuit 12 are symmetric about the symmetry axis X extending along the second direction h12.

[0071] The embodiment of the present application can set at least part of the transistors and / or at least part of the signal lines and the like light shielding structure in the pixel driving circuit 12 on one side of the light transmission hole K at a position far away from the light transmission hole K, and also set at least part of the transistors and / or at least part of the signal lines and the like light shielding structure in the pixel driving circuit 12 on the other side of the light transmission hole K at a position far away from the light transmission hole K, by symmetrically designing the two adjacent pixel driving circuits 12 in the first direction h11. Figure 8 As shown in the figure, the embodiment of the present application can set the first light emitting control transistor M5 and the first power supply signal line PVDD at a position far away from the light transmission hole K in the pixel driving circuit 12, so as to increase the distance of the first power supply signal line PVDD electrically connected with the two pixel driving circuits 12 in the first direction h11, and then when the light transmission hole K is set between the two pixel driving circuits 12, the possibility of the light transmission hole K being shielded by the first power supply signal line PVDD and the first light emitting control transistor M5 can be reduced, which is beneficial to reduce the setting difficulty of the light transmission hole K, improve the light transmission rate of the light transmission hole, and increase the light transmission area of the light transmission hole K.

[0072] It should be noted that, Figure 8 The layout of the pixel driving circuit andFigure 9 The circuit structure of the pixel driving circuit shown is only illustrative, and other designs can also be used in practice, which are not limited by the embodiments of the present application.

[0073] When the same light-transmitting hole group 20 includes the first light-transmitting hole K1 and the 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 two other adjacent pixel driving circuits 12 in the first direction h11.

[0074] For example, as shown in Figure 8 , 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 the first direction h11; the first signal line 31 and the second signal line 32 are arranged along the second direction h12. In the plane where the substrate is located, the orthographic projections of the plurality of light-transmitting holes K in the same light-transmitting hole group are located between the orthographic projection of the first signal line 31 and the orthographic projection of the second signal line 32 in the second direction h12.

[0075] Taking the case that the light-transmitting hole group 20 includes the first light-transmitting hole K1 and the second light-transmitting hole K2, in combination with Figure 10 , Figure 11 , Figure 12 , Figure 13 , Figure 14 and Figure 15 , as shown, Figure 10 , Figure 11 , Figure 12 , Figure 13 , Figure 14 and Figure 15 are six simplified schematic diagrams of the first signal line, the second signal line, the first light-transmitting hole and the second light-transmitting hole provided by the embodiments of the present application, 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.

[0076] In the embodiments of the present application, as shown in Figure 10 , Figure 11 , Figure 12 , Figure 13 , Figure 14 and Figure 15As shown, the first signal line 31 comprises a first portion 311, and the second signal line 32 comprises a second portion 321; in the plane where the substrate is located, the orthographic projection of the first portion 311 is close to the edge of the orthographic projection of the first light-transmitting hole K1 and surrounds the orthographic projection of the first light-transmitting hole K1, and the orthographic projection of the second portion 321 is close to the edge of the orthographic projection of the first light-transmitting hole K1 and surrounds the orthographic projection of the first light-transmitting hole K1. Based on this arrangement, on the premise that the signals transmitted by the first signal line 31 and the second signal line 32 can be normally transmitted, the first signal line 31 and the second signal line 32 can avoid shielding the first light-transmitting hole K1, and the light transmittance of the first light-transmitting hole K1 can be ensured.

[0077] It should be noted that, Figure 10 The shapes of the first signal line 31 and the second signal line 32 shown are only schematic, and in the case where the entire first signal line 31 extends along the first direction h11 and the entire second signal line 32 extends along the first direction h11, the embodiment of the present application can also 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.

[0078] Optionally, the first signal line 31 and the second signal line 32 can transmit different signals. Figure 8 For example, the first signal line 31 comprises a first scan line S1, and the second signal line 32 comprises a reset signal line Ref.

[0079] For example, Figure 10 As shown, the first signal line 31 further comprises a third portion 312, and the second signal line 32 further comprises a fourth portion 322; in 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. For example, the light-transmitting hole group 20 comprises a first light-transmitting hole K1 and a second light-transmitting hole K2, in 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.

[0080] In the embodiment of the present application, the line width of the first portion 311 is less than or equal to the line width W312 of the third portion 312; and / or, the line width of the second portion 321 is less than or equal to the line width W322 of the fourth portion 322.

[0081] For example, the first part 311 can be a straight section, or it can also be... Figure 10 The non-linear portion shown has different line widths at different positions. When the first portion 311 is set as a non-linear portion, the first portion 311 can have different line widths at different positions. For example... Figure 10 As shown, the minimum line width of the first part 311 is W311min, and the maximum line width is W311max. W311min < W311max. The line width of the first part 311 mentioned above refers to the minimum line width W311min of the first part 311.

[0082] Similarly, when the second part 321 is set as a non-linear part, the second part 321 can have different line widths in different positions. For example... Figure 10 As shown, the minimum line width of the second part 321 is W321min, and the maximum line width is W321max. W321min < W321max. The line width of the second part 321 mentioned above refers to the minimum line width W321min of the second part 321.

[0083] 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-transmitting hole K1, which helps to ensure the light transmittance of the first light-transmitting hole K1.

[0084] For example, such as Figure 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-transmitting hole K1 is a straight line; and / or, the orthographic projection of the second portion 321 away from the edge of the first light-transmitting hole K1 is a straight line. Based on this arrangement, the uniformity of the shape of the edges of the first signal line 31 and / or the second signal line 32 away from the first light-transmitting hole K1 can be improved.

[0085] Continue to refer to Figure 10 As shown, on the plane where the substrate is located, the orthographic projection of the third portion 312 away from the edge of the first light-transmitting hole K1 is a straight line, and the orthographic projection of the fourth portion 322 away from the edge of the first light-transmitting hole K1 is also a straight line. Optionally, the orthographic projections of the first portion 311 and the third portion 312 away from the edge of the first light-transmitting hole K1 can be parallel to each other. The orthographic projections of the second portion 321 and the fourth portion 322 away from the edge of the first light-transmitting hole K1 can also be parallel to each other.

[0086] For example, such as Figure 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 near the side of the first light-transmitting 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 near the first light-transmitting 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 near the side of the first light-transmitting 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 near the first light-transmitting hole K1 on the basis of the fourth portion 322.

[0087] It should be noted that, Figure 10 The circular shape of the first light-transmitting hole K1 shown is merely illustrative, and 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 broken line, a curve or other shapes, and the embodiments of the present application do not limit this.

[0088] Optionally, as shown in Figure 11 At least part of the first portion 311 protrudes away from the first light-transmitting hole K1; and / or, at least part of the second portion 321 protrudes away from the first light-transmitting hole K1. Based on this arrangement, the settable area of the first light-transmitting hole K1 can be increased, which is beneficial to increase the light-transmitting area of the first light-transmitting hole K1, and further improve the light transmittance of the first display area A1.

[0089] Illustratively, as shown in Figure 11 The first portion 311 includes a first sub-portion 3111 and a second sub-portion 3112, the first sub-portion 3111 protrudes away from the first light-transmitting hole K1, and the second sub-portion 3112 can not protrude. The second portion 321 includes a third sub-portion 3211 and a fourth sub-portion 3212, the third sub-portion 3211 protrudes away from the first light-transmitting hole K1, and the fourth sub-portion 3212 can not protrude.

[0090] Optionally, as shown in Figure 10 and Figure 11 The first signal line 31 further includes a fifth portion 313 corresponding to the second light-transmitting hole K2, and the second signal line 32 further includes a sixth portion 323 corresponding to the second light-transmitting hole K2; in the plane on which the substrate is located, the orthographic projection of the edge of the fifth portion 313 near the second light-transmitting hole K2 is in a straight line shape; and / or, the orthographic projection of the edge of the sixth portion 323 near the second light-transmitting hole K2 is in a straight line shape.

[0091] Illustratively, as shown in Figure 10 and Figure 11As shown, the maximum width W22 of the second light-transmitting hole K2 in the second direction h12 is less 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 can be the distance between the edges of the two portions on the side close to the light-transmitting hole K. In this case, in order to set the second light-transmitting hole K2, the embodiments of the present application can not need to make additional adjustments to the fifth portion 313 and the sixth portion 323, for example, as shown in Figure 10 and Figure 11 As shown, the embodiments of the present application can design the shape of the fifth portion 313 to be the same as the third portion 312 described above, and design the shape of the sixth portion 323 to be the same as the fourth portion 322 described above, for example, in the plane where the substrate is located, the embodiments of the present application 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 beneficial to shorten the lengths of the fifth portion 313 and the sixth portion 323, and reduce the voltage drop in the signal transmission process.

[0092] Optionally, as shown in Figure 12 , Figure 13 , Figure 14 and Figure 15 In the plane where the substrate is located, the embodiments of the present application can also make the orthographic projection of the fifth portion 313 surround the orthographic projection of the second light-transmitting hole K2 close to the edge of the second light-transmitting hole K2, and / or make the orthographic projection of the sixth portion 323 surround the orthographic projection of the second light-transmitting hole K2 close to the edge of the second light-transmitting hole K2.

[0093] Based on the above setting mode, when designing the second light-transmitting hole K2, as shown in Figure 12 and Figure 13 The embodiments of the present application 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 portion 312 and the fourth portion 322, so as to increase the area of the second light-transmitting hole K2 and improve the intensity of the ambient light transmitted by the second light-transmitting hole K2.

[0094] Optionally, as shown in Figure 13 The embodiments of the present application can make at least part of the fifth portion 313 protrude in a direction away from the second light-transmitting hole K2; and / or the sixth portion 323 protrudes 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, improve the light-transmitting area of the second light-transmitting hole K2, and further improve the light transmittance of the first display area A1.

[0095] Exemplarily, as shown in Figure 13 The fifth portion 313 includes a fifth sub-portion 3131 and a sixth sub-portion 3132, the fifth sub-portion 3131 protrudes away from the second light transmission hole K2, and the sixth sub-portion 3132 can not protrude. The sixth portion 323 includes a seventh sub-portion 3231 and an eighth sub-portion 3232, the seventh sub-portion 3231 protrudes away from the second light transmission hole K2, and the eighth sub-portion 3232 can not protrude.

[0096] Optionally, the fifth portion 313 can have a line width less than or equal to the line width W312 of the third portion 312; and / or, the sixth portion 323 can have a line width less than or equal to the line width W322 of the fourth portion 322.

[0097] In the embodiment of the present application, the fifth portion 313 can be a straight line portion as shown in Figure 10 and Figure 11 Alternatively, the fifth portion 313 can be a non-straight line portion having different line widths at different positions as shown in Figure 12 When the fifth portion 313 is set as a non-straight line portion, the fifth portion 313 can have different line widths at different positions, wherein the line width of the fifth portion 313 refers to the minimum line width, and similarly, the line width of the sixth portion 323 also refers to the minimum line width.

[0098] Figure 10 and Figure 11 For example, the line width of the fifth portion 313 is equal to the line width W312 of the third portion 312; and the line width of the sixth portion 323 is equal to the line width W322 of the fourth portion 322.

[0099] Figure 12 For example, the line width of the fifth portion 313 is less than the line width W312 of the third portion 312; and the line width of the sixth portion 323 is less than the line width W322 of the fourth portion 322. Based on this setting mode, the fifth portion 313 and the sixth portion 323 can avoid the second light transmission hole K2, which is beneficial to ensure the light transmittance of the second light transmission hole K2.

[0100] Exemplarily, as shown in Figure 10 , Figure 11 and Figure 12 In the plane where the substrate is located, the fifth portion 313 has a straight line shape in the orthographic projection away from the edge of the second light transmission hole K2; and / or, the sixth portion 323 has a straight line shape in the orthographic projection away from the second light transmission hole K2. Based on this setting mode, the uniformity of the shape of the first signal line 31 and / or the second signal line 32 away from the edge of the second light transmission hole K2 can be improved.

[0101] Optionally, as shown in Figure 10 , Figure 11 and Figure 12As shown in the drawings, the orthographic projection of the third portion 312 away from the edge of the second light-transmissive hole K2 is linear, and the orthographic projection of the fourth portion 322 away from the edge of the second light-transmissive hole K2 is linear. Exemplarily, the orthographic projection of the fifth portion 313 away from the edge of the second light-transmissive hole K2 and the orthographic projection of the third portion 312 away from the edge of the second light-transmissive hole K2 can be parallel to each other. The orthographic projection of the sixth portion 323 away from the edge of the second light-transmissive hole K2 and the orthographic projection of the fourth portion 322 away from the edge of the second light-transmissive hole K2 can be parallel to each other.

[0102] Exemplarily, as shown in the drawings, Figure 12 Exemplarily, the fifth portion 313 includes a fifth sub-portion 3131 and a sixth sub-portion 3132, the fifth sub-portion 3131 has a notch on the side close to the second light-transmissive hole K2, and the sixth sub-portion 3132 can not include a notch. The sixth portion 323 includes a seventh sub-portion 3231 and an eighth sub-portion 3232, the seventh sub-portion 3231 has a notch on the side close to the second light-transmissive hole K2, and the eighth sub-portion 3232 can not include a notch. The fifth sub-portion 3131 can be regarded as being formed by removing the portion close to the second light-transmissive hole K2 on the basis of the third portion 312. The seventh sub-portion 3231 can be regarded as being formed by removing the portion close to the second light-transmissive hole K2 on the basis of the fourth portion 322.

[0103] It should be noted that, Figure 10 , Figure 11 and Figure 12 The circular shape of the second light-transmissive hole K2 shown in the drawings is merely illustrative, and the shape of the light-transmissive hole can also be designed as a polygon or an irregular shape according to different design requirements in the embodiments of the present application. Correspondingly, the shape of the edge of the fifth portion 313 and the sixth portion 323 close to the second light-transmissive hole K2 can also be designed as a straight line, a broken line, a curve or other shapes, which are not limited in the embodiments of the present application.

[0104] Exemplarily, in the embodiments of the present application, 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 minimum line width thereof. Based on this setting mode, the line width of the first signal line 31 and the second signal line 32 at different positions can be adapted to the area of the light-transmissive hole arranged at the corresponding position, which is beneficial to ensuring the area of each light-transmissive hole K.

[0105] Figure 12 Taking the line width of the fifth portion 313 being greater than the line width W311 of the first portion 311 as an example.

[0106] Alternatively, as shown in the drawings, Figure 13As shown in FIG. 13, the line width W313 of the fifth portion 313 is equal to the line width W311 of the first portion 311; the line width W323 of the sixth portion 323 is equal to the line width W321 of the second portion 321. In this way, 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, thereby facilitating stable transmission of signals.

[0107] As shown in FIG. 13, the line width W313 of the fifth portion 313 is equal to the line width W311 of the first portion 311; the line width W323 of the sixth portion 323 is equal to the line width W321 of the second portion 321. In this way, 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, thereby facilitating stable transmission of signals. Figure 10 、 Figure 11 、 Figure 12 and Figure 13 As shown in FIG. 13, 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, where W12>W22, so that the area of the first light transmission hole K1 is greater than the area of the second light transmission hole K2.

[0108] As shown in FIG. 13, 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, where W12>W22, so that the area of the first light transmission hole K1 is greater than the area of the second light transmission hole K2. Figure 10 、 Figure 11 、 Figure 12 and Figure 13 As shown in FIG. 13, the distance between the first portion 311 and the second portion 321 in the second direction h12 is d12, and the distance between the fifth portion 313 and the sixth portion 323 in the second direction h12 is d22. 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 application, d12≥d22.

[0109] Figure 10 、 Figure 11 、 Figure 12 and Figure 13 As shown in FIG. 13, the distance between the first portion 311 and the second portion 321 in the second direction h12 is d12, and the distance between the fifth portion 313 and the sixth portion 323 in the second direction h12 is d22. 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 application, d12≥d22.

[0110] As shown in FIG. 13, the distance between the first portion 311 and the second portion 321 in the second direction h12 is d12, and the distance between the fifth portion 313 and the sixth portion 323 in the second direction h12 is d22. 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 application, d12≥d22. Figure 14 and Figure 15As shown, both take d12=d22 as an example. By taking d12=d22, the embodiment of the present application can make the shapes of the first signal line 31 and the second signal line 32 consistent at different positions, which is beneficial to improve the consistency of the shapes and lengths and can make the transmission performance of the signals consistent at different positions. 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, thereby being beneficial to increase the light-transmitting amount of the second light-transmitting hole K2.

[0111] As shown in FIG. 1, the first display area A1 includes a plurality of pixel driving circuits 12, a first signal line 31 and a second signal line 32, and a first light-transmitting hole K1 and a second light-transmitting hole K2. Figure 16 As shown in FIG. 1, the first display area A1 includes a plurality of pixel driving circuits 12, a first signal line 31 and a second signal line 32, and a first light-transmitting hole K1 and a second light-transmitting hole K2. Figure 16 As shown in FIG. 1, the first display area A1 includes a plurality of pixel driving circuits 12, a first signal line 31 and a second signal line 32, and a first light-transmitting hole K1 and a second light-transmitting hole K2.

[0112] As shown in FIG. 1, the first display area A1 includes a plurality of pixel driving circuits 12, a first signal line 31 and a second signal line 32, and a first light-transmitting hole K1 and a second light-transmitting hole K2.

[0113] As shown in FIG. 1, the first display area A1 includes a plurality of pixel driving circuits 12, a first signal line 31 and a second signal line 32, and a first light-transmitting hole K1 and a second light-transmitting hole K2. Figure 16 As shown in FIG. 1, the first display area A1 includes a plurality of pixel driving circuits 12, a first signal line 31 and a second signal line 32, and a first light-transmitting hole K1 and a second light-transmitting hole K2.

[0114] As shown in FIG. 1, the first display area A1 includes a plurality of pixel driving circuits 12, a first signal line 31 and a second signal line 32, and a first light-transmitting hole K1 and a second light-transmitting hole K2. Figure 16 As shown in FIG. 1, the first display area A1 includes a plurality of pixel driving circuits 12, a first signal line 31 and a second signal line 32, and a first light-transmitting hole K1 and a second light-transmitting hole K2.

[0115] Figure 16As shown in d11>d21, based on the arrangement, 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 size of the aperture 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.

[0116] Alternatively, as shown in Figure 17 , Figure 17 Another simplified schematic diagram of the third signal line, the fourth signal line, the first light-transmitting hole and the second light-transmitting hole provided by the embodiment of the present application is provided, and the embodiment of the present application can also make d11=d21. 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 beneficial to improving the consistency of the shapes and lengths of the signal lines transmitting the same type of signals, and can make the transmission performance of the 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 that the light transmission amount of the second light-transmitting hole K2 can be increased.

[0117] 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 a data signal line; or both can also transmit the above-mentioned first power supply signal PVDD, that is, both include a first power supply signal line.

[0118] Exemplarily, as shown in Figure 18 , Figure 18 for Figure 2 Another cross-sectional schematic diagram along BB' is provided, and the display panel further includes a light-shielding metal 4 located between the light-shielding layer 2 and the substrate 10. Along the 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 rays emitted from the light-transmitting hole K and reflect the received diffracted light rays. The included angle between the propagation direction of the reflected light rays and the normal line of the substrate 10 is smaller than the included angle between the diffracted light rays incident on the light-shielding metal 4 and the normal line of the substrate 10.

[0119] Specifically, in the process that the external light rays are emitted from the first side of the display panel to the second side of the display panel through the light-transmitting hole K, in combination with Figure 19 , Figure 19This is a schematic diagram of an optical path for external light passing through a light-transmitting hole and a light-shielding metal. The light diffracted at the light-transmitting hole K can be reflected by the side of the light-shielding metal 4 in a direction parallel to the plane of the substrate. The side of the light-shielding metal 4 is located on the side of the light-shielding metal 4 closest 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 light-transmitting hole K into 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.

[0120] For example, the light-shielding metal 4 includes the aforementioned signal line or source / drain structure of a thin-film transistor.

[0121] Optionally, in this embodiment of the invention, the angle between the side surface and the bottom surface of the light-shielding metal 4 is... ,in, .

[0122] The embodiments of the present invention, by ordering This allows diffracted light rays that pass through the light-transmitting hole K and whose propagation direction forms an angle greater than or equal to 10° with the normal of the substrate 10 to be directed toward the side of the light-shielding metal 4. This increases the intensity of the diffracted light received by the light-shielding metal 4, thereby increasing the intensity of the ambient light reflected into the optical sensor.

[0123] In addition, combined Figure 19 As shown, where,

[0124] (2)

[0125] In this embodiment of the invention, 92.5°≤ Substituting into formula (2) above, we can obtain:

[0126] (3)

[0127] For example, when N=5, that is, when 5 light-transmitting holes K with different areas are set in the light-transmitting hole group 20, the maximum diffraction angle θ1=10° is obtained. Substituting this into the above formula (3) yields θ2≤5°; that is, the embodiment of the present invention achieves this by setting N=5. This can make the angle between the propagation direction of the light reflected by the first light-shielding metal 41 and the substrate 10 less than or equal to 5°, thereby increasing the ambient light intensity entering the optical sensor and improving the working performance of the optical sensor.

[0128] Optional, such as Figure 18As shown, the distance between the edge of the light shielding metal 4 and the light transmission hole K along the direction parallel to the plane where the substrate 10 is located is d3, and the distance between the light shielding metal 4 and the light shielding layer 2 along the direction perpendicular to the plane where the substrate 10 is located is h, where d3≤h*tan10°. Based on this arrangement, the diffracted light rays with large angles emitted from the light transmission hole K, such as the diffracted light rays with the angle between the propagation direction and the normal of the substrate 10 greater than or equal to 10°, can be reflected by the side surface of the corresponding light shielding metal 4 and further reflected by the side surface of the light shielding metal 4, which is beneficial to improve the utilization rate of the diffracted light emitted through the light transmission hole K.

[0129] For example, the light transmission hole group 20 includes a first light transmission hole K1 and a second light transmission hole K2, as shown in the figure, the light shielding metal 4 includes a first light shielding metal 41 and a second light shielding metal 42, and the first light shielding metal 41 does not overlap with the first light transmission hole K1 along the direction perpendicular to the plane where the substrate 10 is located; the second light shielding metal 42 does not overlap with the second light transmission hole K2 along the direction perpendicular to the plane where the substrate 10 is located. Figure 18 The first light shielding metal 41 can receive the diffracted light rays emitted from the first light transmission hole K1, and the second light shielding metal 42 can receive the diffracted light rays emitted from the second light transmission hole K2.

[0130] In the embodiment of the application, the angle between the side surface and the bottom surface of the first light shielding metal 41 is , and the angle between the side surface and the bottom surface of the second light shielding metal 42 is , where , so that the diffracted light rays with the angle between the propagation direction and the normal of the substrate 10 greater than or equal to 10° emitted through the first light transmission hole K1 can be more reflected by the side surface of the first light shielding metal 41, i.e., the intensity of the diffracted light received by the first light shielding metal 41 is increased, and further the intensity of the ambient light reflected by the first light shielding metal 41 into the optical sensor is increased. And / or, , so that the diffracted light rays with the angle between the propagation direction and the normal of the substrate 10 greater than or equal to 10° emitted through the second light transmission hole K2 can be more reflected by the side surface of the second light shielding metal 42, i.e., the intensity of the diffracted light received by the second light shielding metal 42 is increased, and further the intensity of the ambient light reflected by the second light shielding metal 42 into the optical sensor is increased.

[0131] As Figure 18As shown, the distance between the first light shielding metal 41 and the edge of the first light transmission hole K1 is d13, and the distance between the second light shielding metal 42 and the edge of the second light transmission hole K2 is d23; in 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 rays with large angles emitted from the first light transmission hole K1 can be reflected by the side surface of the first light shielding metal 41, which is beneficial to improve the utilization rate of the diffracted light rays emitted through the first light transmission hole K1. And / or, the embodiment of the present application can also make d23≤h2*tan10°, so that the diffracted light rays with large angles emitted from the second light transmission hole K2 can be reflected by the side surface of the second light shielding metal 42, which is beneficial to improve the utilization rate of the diffracted light rays emitted through the second light transmission hole K2.

[0132] Based on the same inventive concept, the embodiment of the present application also provides a display device, which comprises the display panel 100 and an optical sensor 5. Figure 20 As shown, Figure 20 A schematic diagram of a display device provided by the embodiment of the present application is shown, which comprises the optical sensor 5 and the display panel 100 described above. The optical sensor 5 is at least partially located in the first display area A1 in the orthographic projection of the plane where the substrate is located. Wherein, the specific structure of the display panel 100 has been described in detail in the above embodiment, which will not be repeated here. Of course, Figure 20 The display device shown is only for illustrative purposes, and the display device can be any device with display function, such as mobile phone, tablet computer, notebook computer, e-paper, television, smart watch, etc. The embodiment of the present application does not limit this.

[0133] The above only describes the preferred embodiments of the present application and should not be used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A display panel, characterized by, 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 comprises: a substrate; a light-blocking layer located on one side of the substrate, the light-blocking layer comprising a plurality of light-transmitting hole groups located in the first display area, the light-transmitting hole groups being arranged in a first direction and a second direction, the light-transmitting hole groups comprising N light-transmitting holes arranged in the first direction and having different areas, and the light-transmitting holes not overlapping with the light-emitting elements in a direction perpendicular to a plane in which the display panel is located; wherein N is an integer, and N≥2; the light-blocking layer comprises a first light-blocking layer and a second light-blocking layer, and the second light-blocking layer is located on a side of the first light-blocking layer close to the substrate; the light-transmitting holes comprise first sub-light-transmitting holes located in the first light-blocking layer and second sub-light-transmitting holes located in the second light-blocking layer, and the first sub-light-transmitting holes and the second sub-light-transmitting holes at least partially overlap in projection in a plane in which the substrate is located; the second sub-light-transmitting holes have an area greater than or equal to that of the first sub-light-transmitting holes in projection in the plane in which the substrate is located.

2. The display panel of claim 1, wherein the distance between two adjacent light-transmitting hole groups in the first direction is equal to the distance between two adjacent light-transmitting holes in the same light-transmitting hole group.

3. The display panel of claim 1, wherein the display panel comprises a black matrix and a pixel definition layer; the black matrix is located on a side of the light-emitting elements away from the substrate, and the black matrix further comprises a first opening overlapping with the light-emitting elements in the direction perpendicular to the plane in which the display panel is located; the pixel definition layer comprises a second opening, the light-emitting elements comprise a light-emitting layer, and at least part of the light-emitting layer is located in the second opening; the first light-blocking layer comprises the black matrix, and the second light-blocking layer comprises the pixel definition layer.

4. The display panel of claim 1, wherein the sub-pixels further comprise pixel driving circuits electrically connected to the light-emitting elements; the projection of the light-transmitting holes in the first direction is located between the projections of two adjacent pixel driving circuits in the plane in which the substrate is located, two adjacent pixel driving circuits are symmetrically designed.

5. The display panel of claim 4, wherein the first display area further comprises a first signal line and a second signal line electrically connected to the pixel driving circuits, the first signal line and the second signal line extend in the first direction, and the first signal line and the second signal line are arranged in a second direction; the projections of a plurality of light-transmitting holes in the same light-transmitting hole group are located between the projections of the first signal line and the second signal line in the plane in which the substrate is located; the plurality of light-transmitting holes in the same light-transmitting hole group comprise at least a first light-transmitting hole, the first signal line comprises a first part, and the projection of the first part surrounds part of the projection of the first light-transmitting hole in the plane in which the substrate is located. The second signal line comprises a second portion; in a plane where the substrate is located, a projection of the second portion is linearly close to a projection of an edge of the first light-transmitting hole.

6. The display panel of claim 5, wherein, The first signal line comprises a third portion; the second signal line comprises a fourth portion; In the plane where the substrate is located, a projection of the third portion does not overlap with projections of the plurality of light-transmitting holes in the same light-transmitting hole group in the second direction, and a projection of the fourth portion does not overlap with 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.

7. The display panel of claim 6, wherein, In the plane where the substrate is located, the projection of the first portion is linearly away from the edge of the first light-transmitting hole; And / or, In the plane where the substrate is located, the projection of the second portion is linearly away from the edge of the first light-transmitting hole.

8. The display panel of claim 5, wherein, The first portion protrudes away from the first light-transmitting hole; and / or, the second portion protrudes away from the first light-transmitting hole.

9. The display panel of claim 5, wherein, The plurality of light-transmitting holes in the same light-transmitting hole group further comprises at least a second light-transmitting hole, The first signal line further comprises a fifth portion corresponding to the second light-transmitting hole, and the second signal line further comprises a sixth portion corresponding to the second light-transmitting hole; In the plane where the substrate is located, the projection of the fifth portion is linearly close to a projection of an edge of the second light-transmitting hole; and / or, in the plane where the substrate is located, the projection of the sixth portion is linearly close to a projection of an edge of the second light-transmitting hole.

10. The display panel of claim 5, wherein, The plurality of light-transmitting holes in the same light-transmitting hole group further comprises at least a second light-transmitting hole, The first signal line further comprises a fifth portion; in the plane where the substrate is located, a projection of the fifth portion is linearly close to a projection of an edge of the second light-transmitting hole around a projection of the second light-transmitting hole, The second signal line further comprises a sixth portion; in the plane where the substrate is located, a projection of the sixth portion is linearly close to a projection of an edge of the second light-transmitting hole around a projection of the second light-transmitting hole.

11. The display panel of claim 10, wherein, The fifth portion protrudes away from the second light-transmitting hole; and / or, the sixth portion protrudes away from the second light-transmitting hole.

12. The display panel of claim 10, wherein, The first signal line comprises a third portion; the second signal line comprises a fourth portion; a projection of the third portion in a plane where the substrate is located does not overlap with projections of multiple light-transmitting holes in the same group of light-transmitting holes in the second direction, and a projection of the fourth portion in the plane where the substrate is located does not overlap with projections of multiple light-transmitting holes in the same group of light-transmitting holes in the second direction; a line width of the fifth portion is less than a line width of the third portion; and / or a line width of the sixth portion is less than a line width of the fourth portion.

13. The display panel of claim 12, wherein a projection of the fifth portion in a plane where the substrate is located is linear away from an edge of the second light-transmitting hole; and / or a projection of the sixth portion in the plane where the substrate is located is linear away from an edge of the second light-transmitting hole.

14. The display panel of claim 12, wherein a line width of the fifth portion is less than a line width of the first portion; and / or a line width of the sixth portion is less than a line width of the second portion.

15. The display panel of claim 10, wherein a maximum length of the first light-transmitting hole in the second direction is W12, and a maximum length of the second light-transmitting hole in the second direction is W22, where W12 > W22; a distance between the first portion and the second portion is d12, and a distance between the fifth portion and the sixth portion is d22, where d12 = d22.

16. The display panel of claim 5, wherein the first display area further comprises 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, a projection of the third signal line in a plane where the substrate is located is located on a side of a projection of one of the pixel driving circuits away from a projection of the light-transmitting hole in the first direction; and a projection of the fourth signal line in the plane where the substrate is located is located on a side of a projection of the other pixel driving circuit away from the projection of the light-transmitting hole in the first direction.

17. The display panel of claim 16, wherein the multiple light-transmitting holes in the same group of light-transmitting holes further comprise at least a second light-transmitting hole, a maximum length of the first light-transmitting hole in the first direction is W11, and a maximum length of the second light-transmitting hole in the first direction is W21, where W11 > W21; a distance between the third signal line and the fourth signal line on two sides of the first light-transmitting hole is d11, and a distance between the third signal line and the fourth signal line on two sides of the second light-transmitting hole is d21; where 18. The display panel of claim 1, wherein, d11 = d21. a light-blocking metal is further included between the light-blocking layer and the substrate, the light-blocking metal does not overlap with the light-transmitting hole in a direction perpendicular to a plane where the substrate is located.

19. The display panel of claim 18, wherein The angle between the side surface of the light-shielding metal and the bottom surface is wherein .

20. The display panel of claim 18, wherein, a distance between the light-shielding metal and an edge of the light-transmitting hole in a direction parallel to a plane on which the substrate lies is d3, a distance between the light-shielding metal and the light-shielding layer in a direction perpendicular to the plane on which the substrate lies is h, wherein, 。 21. The display panel of claim 1, wherein, 2≤N≤6。 22. The display panel of claim 1, wherein, a second display area is further included, the second display area at least partially surrounds the first display area, the second display area includes a plurality of sub-pixels, and a number of the sub-pixels of the second display area is greater than or equal to a number of the sub-pixels of the first display area; the first display area includes an optical sensor arrangement area.

23. The display panel of claim 1, wherein, the N light-transmitting holes arranged along the first direction and having mutually different areas include a first light-transmitting hole to an Nth light-transmitting hole; along the second direction, the first light-transmitting hole to the Nth light-transmitting hole are sequentially and alternately arranged.

24. A display device comprising: an optical sensor and the display panel of any one of claims 1-23 are included, and a normal projection of the optical sensor on a plane on which the substrate lies is at least partially located in the first display area.

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