Display panel and display device

Abstract

The invention provides a display panel and a display device.The display panel is provided with a main display area and at least one function additional area, the function additional area is provided with at least one display light-transmitting area, a plurality of pixel driving circuit islands are arranged on the periphery of the display light-transmitting area, and each pixel driving circuit island comprises a plurality of first pixel driving circuits; the pixel driving circuit island drives a plurality of display pixels in the function additional area to emit light and is overlapped with a part of display pixels located on the periphery of the display light-transmitting area, and meanwhile, a plurality of signal wires located on the periphery of the pixel driving circuit island are arranged in a fan shape, so that the wiring space is increased, the light transmittance of the display light-transmitting area is improved, and the display effect is improved. Therefore, the photographing and display effects of the under-screen camera are improved.

Description

[0001] This application is a divisional application with application date of August 9, 2019, application number 201910736046.2, and invention name “Display panel and display device”. Technical Field

[0002] The present invention relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0003] Due to its extremely high screen-to-body ratio, full-screen displays bring people a new visual experience and sensory impact, becoming a goal that display panel manufacturers are competing for.

[0004] Due to the extremely high screen-to-body ratio, the full-screen display brings people a new visual experience and sensory impact. The current common design of the under-screen camera is to dig a hole in the camera area of ​​the display panel. The camera translucent area does not display the picture. This method will have a higher panel penetration rate, but the user display experience is not good and the full-screen effect cannot be presented. Another method is to set a display translucent area on the display panel, and set an under-screen camera at a position corresponding to the display translucent area of ​​the display panel, thereby improving the user experience. However, with this method, the transmittance of the display translucent area of ​​the display panel is low, so that the photo-taking effect of the under-screen camera is poor.

[0005] In summary, it is necessary to provide a new display panel and a display device to solve the above technical problems. Summary of the invention

[0006] The present invention provides a display panel and a display device, which solve the technical problem that the transmittance of the display light-transmitting area of ​​the existing display panel is low, resulting in poor photo-taking effect of the under-screen camera.

[0007] To solve the above problems, the technical solution provided by the present invention is as follows:

[0008] An embodiment of the present invention provides a display panel, wherein the display panel has a main display area and at least one additional function area, wherein the additional function area has at least one display light-transmitting area, and the display panel includes:

[0009] A substrate, wherein a plurality of first pixel driving circuits are arranged on the substrate in the periphery of the display light-transmitting area and in the function-addition area;

[0010] At least two insulating layers, covering the first pixel driving circuits;

[0011] A transparent wiring is disposed between the at least two insulating layers; and

[0012] A plurality of first display pixels are arranged on a side of the insulating layer away from the substrate and located in the display light-transmitting area, wherein the first display pixels include a first pixel anode;

[0013] The first pixel anode is electrically connected to at least a portion of the first pixel driving circuit through the transparent wiring, so that the first pixel driving circuit drives the first display pixel to emit light.

[0014] According to the display panel provided by an embodiment of the present invention, the first pixel anode is electrically connected to the first pixel driving circuit through the transparent wiring at least partially located in the display light-transmitting area and partially located outside the display light-transmitting area and in the function-addition area.

[0015] According to the display panel provided by an embodiment of the present invention, the first pixel anode is electrically connected to the first pixel driving circuit through the transparent wiring which is at least partially located in the main display area and partially located outside the display light-transmitting area and in the function-addition area.

[0016] According to the display panel provided by the embodiment of the present invention, the transparent wiring has at least two layers, each of the insulating layers is provided with a via hole, and the transparent wirings of two adjacent layers are electrically connected through the via hole.

[0017] According to the display panel provided by an embodiment of the present invention, some of the first display pixels among the plurality of the first display pixels in the display light-transmitting area are electrically connected to the first pixel driving circuit via a layer of the transparent wiring; some of the first display pixels among the plurality of the first display pixels are electrically connected to the first pixel driving circuit via another layer of the transparent wiring.

[0018] According to the display panel provided by an embodiment of the present invention, some of the first display pixels in the plurality of the first display pixels in the display light-transmitting area are electrically connected to the first pixel driving circuit through multiple layers of the transparent wiring, wherein the orthographic projections of the multiple layers of the transparent wiring on the substrate at least partially overlap.

[0019] According to the display panel provided by an embodiment of the present invention, a plurality of second display pixels are further arranged on a side of the insulating layer away from the substrate and located in the main display area, the second display pixels include second pixel anodes, and a plurality of second pixel driving circuits are further arranged on the substrate in the main display area to drive the second display pixels to emit light.

[0020] According to the display panel provided by the embodiment of the present invention, the distance between each two adjacent transparent wirings arranged in the same layer is greater than 2 um, and the line width of the transparent wiring is greater than 1 um.

[0021] According to the display panel provided by an embodiment of the present invention, a plurality of signal lines are further arranged on the substrate outside the display light-transmitting area, and the plurality of signal lines are electrically connected to a plurality of the first pixel driving circuits for transmitting signals for driving the first display pixels to the first pixel anodes.

[0022] According to the display panel provided by an embodiment of the present invention, the first pixel driving circuit, the signal wiring and the first pixel anode occupy less than or equal to 50% of the area of ​​the function additional area; the plurality of first pixel anodes occupy less than 50% of the area of ​​the display light-transmitting area.

[0023] According to the display panel provided by the embodiment of the present invention, a plurality of the first pixel driving circuits are arranged in an array to form a pixel driving circuit island, and the first pixel anode is electrically connected to the pixel driving circuit island through the transparent wiring.

[0024] According to the display panel provided by the embodiment of the present invention, the maximum distance between the first display pixel and the pixel driving circuit island is 300-5000 um.

[0025] According to the display panel provided by an embodiment of the present invention, the display panel also includes a conductive layer arranged between the at least two insulating layers, the conductive layer is located in the main display area, and the second display pixel is electrically connected to the second pixel driving circuit through the conductive layer, so that the second pixel driving circuit drives the second display pixel to emit light.

[0026] An embodiment of the present invention provides a display device, the display device comprising the above-mentioned display panel; and

[0027] A photosensitive element is arranged at one side of the display panel and corresponds to the function additional area.

[0028] The beneficial effects of the present invention are as follows: the display panel and the display device provided by the present invention, by arranging a plurality of first pixel driving circuits on the periphery of the display light-transmitting area, and arranging a plurality of layers of transparent wires to electrically connect the first pixel anode and the first pixel driving circuit so that the first pixel driving circuit drives the first display pixel to emit light, are conducive to increasing the wiring space, and improving the transmittance of the display light-transmitting area, thereby improving the photo-taking and display effects of the under-screen camera. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 A schematic diagram of a planar structure of a display panel provided by an embodiment of the present invention;

[0031] Figure 2 A schematic diagram of a planar structure of a function-added area provided in an embodiment of the present invention;

[0032] Figure 3 A schematic diagram of the distribution of a first pixel driving circuit in a function-addition area provided by an embodiment of the present invention;

[0033] Figure 4 A schematic diagram of transparent wiring arrangement of a display panel provided by an embodiment of the present invention;

[0034] Figure 5A A schematic cross-sectional structure diagram of a first display panel provided by an embodiment of the present invention;

[0035] Figure 5B for Figure 5A A simplified schematic diagram of the transparent wiring layout of the display panel;

[0036] Fig. 6A A schematic cross-sectional structure diagram of a second display panel provided by an embodiment of the present invention;

[0037] Figure 6B for Fig. 6A A simplified schematic diagram of the transparent wiring layout of the display panel;

[0038] Fig. 7A A schematic cross-sectional structure diagram of a third display panel provided by an embodiment of the present invention;

[0039] Figure 7B for Fig. 7A A simplified schematic diagram of the transparent wiring layout of the display panel;

[0040] Fig. 8A A schematic cross-sectional structure diagram of a fourth display panel provided by an embodiment of the present invention;

[0041] Figure 8B for Fig. 8A A simplified schematic diagram of the transparent wiring layout of the display panel;

[0042] Fig.9A A schematic cross-sectional structure diagram of a fifth display panel provided by an embodiment of the present invention;

[0043] Fig. 9B for Fig.9A A simplified schematic diagram of the transparent wiring layout of the display panel;

[0044] Fig. 10A A schematic cross-sectional structure diagram of a fifth display panel provided by an embodiment of the present invention;

[0045] Fig. 10B for Fig. 10A A simplified schematic diagram of the transparent wiring layout of the display panel;

[0046] Fig.11 A schematic structural diagram of a pixel driving circuit island provided by an embodiment of the present invention;

[0047] Figures 12A-12B A schematic diagram of the arrangement of a first driving circuit and signal routing provided in an embodiment of the present invention;

[0048] Figures 13A-13B A schematic diagram of the arrangement of a second driving circuit and signal routing provided in an embodiment of the present invention;

[0049] Figures 14A-14B A schematic diagram of the arrangement of a third driving circuit and signal wiring provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0050] The following descriptions of the embodiments are made with reference to the attached drawings to illustrate specific embodiments in which the present invention may be implemented. The directional terms mentioned in the present invention, such as [up], [down], [front], [back], [left], [right], [inside], [outside], [side], etc., are only with reference to the directions of the attached drawings. Therefore, the directional terms used are used to illustrate and understand the present invention, but not to limit the present invention. In the drawings, units with similar structures are represented by the same reference numerals.

[0051] The present invention aims at the technical problem that the display panel and display device in the prior art have low light transmittance in the light-transmitting area, resulting in poor photo-taking effect of the under-screen camera. The present embodiment can solve this defect.

[0052] like Figure 1 As shown, the display panel 100 provided in the embodiment of the present invention is an active matrix organic light emitting diode display panel, and the display panel 100 includes a main display area 100a and at least one additional function area 100b, wherein the main display area 100a is an area mainly used to display images; the additional function area 100b is used to place photosensitive elements, and the additional function area 100b has at least one display light-transmitting area 100c, and the display light-transmitting area 100c is used to display images while allowing light to pass through so that the photosensitive element located on one side of the display panel 100 and corresponding to the display light-transmitting area 100c receives a light signal, wherein the photosensitive element can be a camera, an optical touch component, a fingerprint recognition sensor, etc., so that the display panel 100 can realize functions such as photo taking function, optical touch function, and optical fingerprint recognition.

[0053] like Figure 2As shown, a plurality of the display light-transmitting areas 100c can be set in the function-added area 100b. The shape of the display light-transmitting area 100c can be circular, rectangular, rounded rectangular or irregular polygonal. The size of each of the display light-transmitting areas 100c is 0.36mm2-100mm2, so as to ensure that when a camera is set corresponding to the function-added area 100b of the display panel 100, the camera can have a good photographic effect and reduce the process difficulty.

[0054] It should be noted that, in order to facilitate the description of the technical solution of the embodiment of the present invention, the embodiment of the present invention is described by assuming that the display panel 100 has one function-added area 100 b, and the function-added area 100 b has one display light-transmitting area 100 c.

[0055] Since the pixel driving circuit of the display panel 100 includes multiple metal film layers, such as a polysilicon layer, a gate layer, and a source and drain metal layer, and the metal film layer has a light-shielding effect, the area of ​​the display panel 100 corresponding to the pixel driving circuit is not light-transmitting, and the multiple metal film layers reflect, diffract, and interfere with light. Therefore, the pixel driving circuit is arranged at the periphery of the display light-transmitting area 100c, so that the display light-transmitting area 100c has good light transmittance because the pixel driving circuit is not arranged.

[0056] like Figure 3 As shown, a plurality of first pixel driving circuits 102 are arranged at the periphery corresponding to the display light-transmitting area 100c, and the plurality of first pixel driving circuits 102 are located in the function-added area 100b; a plurality of display pixels are arranged in the function-added area 100b, wherein a plurality of first display pixels 106 are arranged in the display light-transmitting area 100c, each of the first display pixels 106 includes at least three sub-pixels, including a first red sub-pixel, a first blue sub-pixel and a first green sub-pixel, each of the first display pixels 106 may also include a first white sub-pixel, and the sub-pixels constituting the first display pixels 106 may be any one of an organic light-emitting diode, a micro light-emitting diode or a quantum dot light-emitting diode, and specifically, the sub-pixels constituting the first display pixels 106 are organic light-emitting diodes.

[0057] like Figure 4As shown, the function additional area 100b is provided with a plurality of transparent wirings 105, and the first display pixel 106 is electrically connected to the first pixel driving circuit 102 through the transparent wirings 105. The plurality of transparent wirings 105 include at least two layers of transparent wirings 105 located in different layers. In an embodiment of the present invention, the transparent wirings 105 are three layers, and the transparent wirings 105 include a first transparent wiring 1051, a second transparent wiring 1052, and a third transparent wiring 1053. The first transparent wiring 1051, the second transparent wiring 1052, and the third transparent wiring 1053 are respectively located in different layers; specifically, the distance between each two adjacent transparent wirings 105 arranged in the same layer is greater than 2um to avoid a short circuit between two adjacent transparent wirings 105 in the same layer; the line width of the transparent wiring 105 is greater than 1um to avoid a break in the transparent wiring 105 due to a too small line width.

[0058] In one embodiment, the first display pixel 106 is electrically connected to the first pixel driving circuit 102 through the transparent wiring 105 which is at least partially located in the display light-transmitting area 100a and partially located outside the display light-transmitting area 100a and in the function-addition area 100b, that is, the transparent wiring 105 is mainly arranged in the display light-transmitting area 100c.

[0059] Furthermore, the first display pixel 106 and the first pixel driving circuit 102 may be electrically connected via a layer of the transparent wiring 105 or via multiple layers of the transparent wiring 105 . The embodiments of the present invention will be explained from the above two aspects.

[0060] In one embodiment, some of the first display pixels 106 among the plurality of first display pixels 106 may be electrically connected to the first pixel driving circuit 102 via a layer of the transparent wiring 105 . For example, the first display pixel 106 may be electrically connected to the first pixel driving circuit 102 via the first transparent wiring 1051 .

[0061] Specifically, combined Figure 5A As shown, the display panel 100 has a main display area 100a, a function-added area 100b and a display light-transmitting area 100c located in the function-added area 100b; the display panel 100 also includes a substrate 101, multiple first pixel driving circuits 102, at least three insulating layers 104, a pixel definition layer 108, multiple transparent wirings 105, multiple first display pixels 106 and multiple second display pixels 107.

[0062] Furthermore, a plurality of second display pixels 103 and a plurality of second pixel driving circuits 107 are further provided in the main display area 100 b . The second display pixels 107 include second pixel anodes 1071 . The second pixel driving circuits 107 drive the second display pixels 103 to emit light.

[0063] The substrate 101 may include a transparent insulating substrate, for example, the substrate 101 may include any one of a glass substrate, a quartz substrate, and a transparent resin substrate, and the transparent resin substrate may include a polyimide resin; a plurality of the first pixel driving circuits 102 are located on the substrate 101 in the periphery of the display light-transmitting area 100c and in the function-added area 100b, and a plurality of the second pixel driving circuits 102 are also arranged on the substrate 101 in the main display area 100a; at least two insulating layers 104 cover the plurality of the first pixel driving circuits 102 and the plurality of the second pixel driving circuits 103; the transparent wiring 105 is arranged between the at least two insulating layers 104; A plurality of first display pixels 106 are arranged on a side of the insulating layer 104 away from the substrate 101 and located in the display light-transmitting area 100c, and each of the first display pixels 106 includes a first pixel anode 1061; a plurality of second display pixels 107 are arranged on a side of the insulating layer 104 away from the substrate 101 and located in the main display area 100a, and each of the second display pixels 107 includes a second pixel anode 1071, and a second pixel driving circuit 103 is correspondingly arranged under each sub-pixel constituting the second display pixel 107; the pixel definition layer 108 covers the first pixel anode 1061, the second pixel anode 1071 and the insulating layer 104.

[0064] In the embodiment of the present invention, the insulating layer 104 is four layers, specifically including a first insulating layer 1041, a second insulating layer 1042, a third insulating layer 1043 and a fourth insulating layer 1044; wherein the first insulating layer 1041 covers the first pixel driving circuit 102 and the second pixel driving circuit 103, a first transparent wiring 1051 is arranged on the first insulating layer 1041, the first transparent wiring 1051 is at least partially located in the function additional area 100b, and the other part is located in the display light transmission area 100c; the second insulating layer 1042 covers the first insulating layer 1041 and the first transparent wiring 1051, a second transparent wiring 1052 is arranged on the second insulating layer 1041, and the second transparent wiring 1052 is located in the display light transmission area 100c; the third insulating layer 1043 covers the second insulating layer 1041 and the second transparent wiring 1052, and a third transparent wiring 1052 is arranged on the third insulating layer 1043. 053, the third transparent wiring 1053 is located in the display light-transmitting area 100c; the fourth insulating layer 1044 covers the third insulating layer 1043 and the third transparent wiring 1053; a plurality of first pixel anodes 1061 are located on the fourth insulating layer 1044 of the display light-transmitting area 100c; a plurality of second pixel anodes 1071 are located on the fourth insulating layer 1044 of the main display area 100a; wherein, the first pixel anode 1061 is electrically connected to the first pixel driving circuit 102 through the first transparent wiring 1051, specifically, the first pixel anode 1061 and the first transparent wiring 1051 are connected in turn through the via holes that are interconnected on the fourth insulating layer 1044, the third insulating layer 1043 and the second insulating layer 1042, and the first transparent wiring 1051 is connected to the first pixel driving circuit 102 through the via holes located on the first insulating layer 1041.

[0065] like Figure 5B Shown Figure 5A In the simplified wiring diagram of the transparent wiring in FIG, the first display pixel 106 and the first pixel driving circuit 102 are electrically connected through the first transparent wiring 1051.

[0066] For example, continue to refer to Figure 4 Some of the first display pixels 106 in the plurality of first display pixels 106 are electrically connected to the first pixel driving circuit 102 through another layer of the transparent wiring 105, and the first display pixels 106 are electrically connected to the first pixel driving circuit 102 through the second transparent wiring 1052.

[0067] Specifically, combined Fig. 6AAs shown, Fig. 6A and Figure 5A The difference is that the first transparent wiring 1051 is located in the display light-transmitting area 100c, at least part of the second transparent wiring 1052 is located in the function-added area 100b, and the other part is located in the display light-transmitting area 100c; the first pixel anode 1061 is electrically connected to the first pixel driving circuit 102 through the second transparent wiring 1052, specifically, the first pixel anode 1061 and the second transparent wiring 1052 are connected through a via hole located on the fourth insulating layer 1044, and the second transparent wiring 1052 is connected to the first pixel driving circuit 102 through via holes located on the third insulating layer 1043, the second insulating layer 1042 and the first insulating layer 1041, which are interconnected.

[0068] like Figure 6B Shown Fig. 6A In the simplified wiring diagram of the transparent wiring in FIG, the first display pixel 106 and the first pixel driving circuit 102 are electrically connected through the second transparent wiring 1052.

[0069] For example, continue to refer to Figure 4 Some of the first display pixels 106 in the plurality of first display pixels 106 are electrically connected to the first pixel driving circuit 102 through another layer of the transparent wiring 105, and the first display pixels 106 are electrically connected to the first pixel driving circuit 102 through the third transparent wiring 1053.

[0070] Specifically, combined Fig. 7A As shown, Fig. 7A and Figure 5A The difference is that the first transparent wiring 1051 is located in the display light-transmitting area 100c, at least part of the third transparent wiring 1053 is located in the function-added area 100b, and the other part is located in the display light-transmitting area 100c; the first pixel anode 1061 is electrically connected to the first pixel driving circuit 102 through the third transparent wiring 1053, specifically, the first pixel anode 1061 and the third transparent wiring 1053 are connected in turn through the via holes located on the fourth insulating layer 1044 and the third insulating layer 1043 and connected to each other, and the third transparent wiring 1053 is connected to the first pixel driving circuit 102 through the via holes located on the second insulating layer 1042 and the first insulating layer 1041 and connected to each other.

[0071] like Figure 7B Shown Fig. 7AIn the simplified wiring diagram of the transparent wiring in FIG, the first display pixel 106 and the first pixel driving circuit 102 are electrically connected through the third transparent wiring 1053.

[0072] In one embodiment, if Figure 4 As shown, some of the first display pixels 106 among the plurality of first display pixels 106 are electrically connected to the first pixel driving circuit 102 through multiple layers of the transparent wiring 105. For example, some of the first display pixels 106 among the plurality of first display pixels 106 are electrically connected to the first pixel driving circuit 102 through two layers of the transparent wiring 105.

[0073] Specifically, combined Fig. 8A As shown, Fig. 6A and Figure 5A The difference is that the first pixel anode 1061 is electrically connected to the first pixel driving circuit 102 through the second transparent wiring 1052 and the first transparent wiring 1051 in turn. Specifically, the first pixel anode 1061 and the second transparent wiring 1052 are connected through the via holes that are interconnected on the fourth insulating layer 1044 and the third insulating layer 1043 in turn, the second transparent wiring 1052 and the first transparent wiring 1051 are connected through the via holes on the second insulating layer 1042, and the first transparent wiring 1051 and the first pixel driving circuit 102 are connected through the via holes on the first insulating layer 1041.

[0074] Furthermore, the orthographic projections of the first transparent wiring 1051 and the second transparent wiring 1052 on the substrate 101 at least partially overlap. This stacked wiring method is beneficial to increasing the number of the transparent wirings 105, thereby increasing the area of ​​the display light-transmitting area 100c to improve its transmittance.

[0075] like Figure 8B Shown Fig. 8A In the simplified wiring diagram of the transparent wiring in FIG, the first display pixel 106 and the first pixel driving circuit 102 are electrically connected via the second transparent wiring 1052 and the first transparent wiring 1051 in sequence.

[0076] It should be noted that the first pixel anode 1061 and the first pixel driving circuit 102 can also be electrically connected through the third transparent wiring 1053 and the first transparent wiring 1051 in sequence, or the first pixel anode 1061 and the first pixel driving circuit 102 can be electrically connected through the third transparent wiring 1053 and the second transparent wiring 1052 in sequence, which will not be repeated here.

[0077] For example, continue to refer to Figure 4 Some of the first display pixels 106 in the plurality of first display pixels 106 are electrically connected to the first pixel driving circuit 102 through the three-layer transparent wiring 105 .

[0078] Specifically, combined Fig.9A As shown, Fig.9A and Figure 5A The difference is that the first pixel anode 1061 is electrically connected to the first pixel driving circuit 102 through the third transparent wiring 1053, the second transparent wiring 1052 and the first transparent wiring 1051 in sequence. Specifically, the first pixel anode 1061 is connected to the third transparent wiring 1053 through a via hole located in the fourth insulating layer 1044, the third transparent wiring 1053 is connected to the second transparent wiring 1052 through a via hole located on the third insulating layer 1043, the second transparent wiring 1052 is connected to the first transparent wiring 1051 through a via hole located on the second insulating layer 1042, and the first transparent wiring 1051 is connected to the first pixel driving circuit 102 through a via hole located on the first insulating layer 1041.

[0079] like Fig. 9B Shown Fig.9A In the simplified wiring diagram of the transparent wiring, the first display pixel 106 and the first pixel driving circuit 102 are electrically connected through the third transparent wiring 1053, the second transparent wiring 1052 and the first transparent wiring 1051 in sequence.

[0080] In one embodiment, the first pixel anode 1061 is electrically connected to the first pixel driving circuit 102 through the transparent wiring 105 which is at least partially located in the main display area 100a and partially located in the function additional area 100b. That is to say, the transparent wiring 105 can also be set in the main display area 100a to electrically connect the first pixel driving circuit 102 and the first pixel anode 1061, which can further increase the wiring space of the transparent wiring 105 and avoid the problem of short circuit caused by the narrow spacing between the adjacent transparent wirings 105 located on the same layer.

[0081] like Fig. 10A As shown, Fig. 10A and Figure 5AThe difference is that a first transparent wiring 1051 is arranged on the first insulating layer 1041, and the first transparent wiring 1051 is at least partially located in the function-added area 100b, and the other part extends from the function-added area 100b to the main display area 100a; the second insulating layer 1042 covers the first insulating layer 1041 and the first transparent wiring 1051, and a second transparent wiring 1052 is arranged on the second insulating layer 1042, and the second transparent wiring 1052 is located in the main display area 100a; the third insulating layer 104 The fourth insulating layer 1044 covers the third insulating layer 1043 and the third transparent wiring 1053; the first pixel anode 1061 is electrically connected to the first pixel driving circuit 102 via the third transparent wiring 1053, the second transparent wiring 1052 and the first transparent wiring 1051 in sequence.

[0082] It can be understood that the first pixel anode 1061 of the portion of the first display pixel 106 close to the main display area 100a is connected to the first pixel driving circuit 102 through the transparent wiring 105 at least partially located in the main display area 100a, and partially located at the periphery of the display light-transmitting area 100c and in the additional function area 100b; the first pixel anode 1061 of the portion of the first display pixel 106 away from the main display area 100a is electrically connected to the first pixel driving circuit 102 through the transparent wiring 105 at least partially located in the display light-transmitting area 100c, and partially located at the periphery of the display light-transmitting area 100c and in the additional function area 100b, so as to reduce the overall wiring space required for the transparent wiring 105, and the number of the transparent wiring 105 can be further increased.

[0083] like Fig. 10B Shown Fig. 10A In the simplified wiring diagram of the transparent wiring, the first display pixel 106 and the first pixel driving circuit 102 are electrically connected through the third transparent wiring 1053 located partially in the functional accessory area 100b and partially in the main display area 100a, the second transparent wiring 1052 located in the main display area 100a, and the first transparent wiring 1051 located partially in the main display area 100a and partially in the functional additional area 100b.

[0084] Specifically, the material of the insulating layer 104 can be a transparent organic material or an inorganic material, including any one of silicon dioxide, silicon nitride, polyimide or a photoresist material; the material of the transparent wiring 105 can be a transparent conductor material, including any one of indium oxide, indium zinc oxide or silver nanowires. Since the transparent wiring 105 has good light transmittance, its transmittance can generally reach more than 90%, so the light loss through the transparent wiring 105 can be reduced to improve the transmittance of the display light-transmitting area 100c.

[0085] Further, refer to Figure 5A , Fig. 6A , Fig. 7A , Fig. 8A , Fig.9A , Fig. 10A As shown, the display panel 100 further includes a conductive layer 109 disposed between the at least two insulating layers 104, the conductive layer 109 is located in the main display area 100a, and the second pixel anode 1071 of the second display pixel 107 is electrically connected to the second pixel driving circuit 103 through the conductive layer 109, so that the second pixel driving circuit 103 drives the second display pixel 107 to emit light, which can enhance conductivity. It should be noted that the wiring method and material of the conductive layer 109, and the electrical connection method between the second pixel anode 1071 and the second pixel driving circuit 103 can be the same as those of the transparent wiring 105, and can be manufactured using the same process as the transparent wiring 105, which is conducive to saving process steps and reducing production costs. For details, please refer to the above-mentioned embodiment, which will not be repeated here.

[0086] The transparent wiring 105 in the embodiment of the present invention is three-layered, but should not be limited to this. In other embodiments, the transparent wiring 105 can be four-layered, five-layered or even more-layered. It can be understood that the more layers of the transparent wiring 105, the larger the wiring space for the transparent wiring 105, which is beneficial to increase the number of the transparent wiring 105 to increase the area of ​​the display light-transmitting area 100c; however, due to the difficulty of the process and the fact that too many layers of the transparent wiring 105 will increase the risk of poor electrical contact between two adjacent layers of the transparent wiring 105, the number of layers of the transparent wiring 105 should be determined according to actual conditions.

[0087] Furthermore, a plurality of signal lines are arranged on the substrate 101 within the additional function area 100b and located on the periphery of the display light-transmitting area 100c. The plurality of signal lines are electrically connected to a plurality of the first pixel driving circuits 102 and are used to transmit signals for driving the first display pixels 106 to the first pixel anodes 1061. Since the signal lines also have a light-shielding effect, the signal lines are arranged on the periphery of the display light-transmitting area 100c, so that the light transmittance of the display light-transmitting area 100c is further improved due to the absence of the signal lines.

[0088] Specifically, the first pixel driving circuit 102, the signal wiring and the first pixel anode 1061 occupy an area less than or equal to 50% of the additional function area 100b, and the plurality of first pixel anodes 1061 occupy an area less than 50% of the display light-transmitting area 100c, so as to ensure that the display light-transmitting area 100c has sufficient light-transmitting area. In the embodiment of the present invention, the size of the display light-transmitting area 100c is 600 to 10000 um; the size of each first pixel anode 1061 is smaller than the size of each second pixel anode 1071, so that the size of the sub-pixel of the first display pixel 106 is smaller than the size of the sub-pixel of the second display pixel 107, and the display light-transmitting area 100c has a higher transmittance.

[0089] The pixel density of the first display pixel 106 of the display light-transmitting area 100c can be smaller than the pixel density of the second display pixel 107 of the main display area 100a so that the transmittance of the display light-transmitting area 100c is greater than the transmittance of the main display area 100a; the size of the first display pixel 106 of the display light-transmitting area 100c can be smaller than the size of the second display pixel 107 in the main display area 100a so that the transmittance of the display light-transmitting area 100c is greater than the transmittance of the main display area 100a.

[0090] Furthermore, if Figure 3 , Figure 4 As shown, a plurality of the first pixel driving circuits 102 are arranged in an array to form a pixel driving circuit island 10, and the first pixel anodes 1061 are electrically connected to the pixel driving circuit island 10 through the transparent wiring 105. Each of the pixel driving circuit islands 10 includes a plurality of first pixel driving circuits 102. It can be understood that each of the pixel driving circuit islands 10 is formed by aggregating a plurality of the first pixel driving circuits 102 in an island shape, and being concentrated together is relative to the relatively dispersed pixel driving circuits. Specifically, the farthest distance between the first display pixel 106 and the pixel driving circuit island 10 is 300 to 5000 um.

[0091] like Fig.11 The schematic diagram of the structure of a pixel driving circuit island 10 provided by an embodiment of the present invention is shown, each of the pixel driving circuit islands 10 includes m×n array-arranged first pixel driving circuits 102, wherein m represents the number of rows of the first pixel driving circuits 102, n represents the number of columns of the first pixel driving circuits 102, m and n are both positive integers, and at least one of m and n is greater than 1; wherein the value range of m is greater than or equal to 3 and less than 128, and the value range of n is greater than or equal to 1 and less than 128. Further, the value range of m is greater than or equal to 3 and less than 64, and the value range of n is greater than or equal to 1 and less than 64.

[0092] like Fig. 12A , Fig. 12B As shown, a plurality of pixel driving circuit islands 10 and signal routings formed by aggregating a plurality of the first pixel driving circuits 102 are arranged on the periphery of the display light-transmitting area 100c, wherein the signal routings are electrically connected to the first pixel driving circuits 102 to input various electrical signals to the pixel driving circuit islands 10; and no pixel driving circuit islands 10 and signal routings are arranged in the display light-transmitting area 100c.

[0093] It should be noted that the setting of the first pixel driving circuit 102 needs to occupy a certain area. By relatively gathering the first pixel driving circuits 102 to form a pixel driving circuit island 10, the area size of the display light-transmitting area 100c can be increased; and by setting the first pixel driving circuit 102 and the signal wiring that drives the first display pixel 106 on the periphery of the display light-transmitting area 100c, it is ensured that the pixel driving circuit island 10 is not required to be set in the display light-transmitting area 100c, thereby preventing the first pixel driving circuit 102 and the signal wiring from affecting the display and light transmittance of the display light-transmitting area 100c.

[0094] It should be noted that the first pixel driving circuit 102 can be used to drive multiple first display pixels 106 in the display light-transmitting area 100c to ensure that no pixel driving circuit is required in the display light-transmitting area 100c, so that the display light-transmitting area 100c has a high transmittance; the first pixel driving circuit 102 can also be used to drive the first display pixels 106 in other areas of the function additional area 100b except the display light-transmitting area 100c.

[0095] It should be noted that the first pixel driving circuit 102 and the signal routing can be arranged in the function additional area 100b or in the main display area 100a; in addition to driving the first display pixel 106 in the function additional area 100b, the pixel driving circuit island 10 can also be responsible for driving the second display pixel 107 in the main display area 100a that is close to the function additional area 100b.

[0096] Specifically, the signal routing includes multiple first signal lines 31 and multiple second signal lines 32, and the first signal lines 31 and the second signal lines 32 are electrically connected to the pixel driving circuit island 10 to input various electrical signals to the pixel driving circuit island 10; the pixel driving circuit island 10 is electrically connected to the first pixel anode 1061 through the transparent wire 105 to transmit the electrical signal to the first pixel anode 1061.

[0097] The first signal lines 31 may include at least one of a scan line, a light emitting signal line for controlling the light emission of an organic light emitting diode, and a reset line for controlling the anode reset of the organic light emitting diode. Each first signal line 31 includes a first straight line segment 311 , a first winding segment 313 , and a first transition segment 312 .

[0098] Specifically, the display panel 100 also includes a plurality of first sector areas 21 and a plurality of second sector areas 22, wherein the first sector areas 21 are areas defined by a plurality of first transition segments 312 arranged in a fan shape, and the second sector areas 22 are areas defined by a plurality of second transition segments 322 arranged in a fan shape.

[0099] Among them, a plurality of first straight line segments 311 are arranged horizontally and in parallel, a first transition segment 312 is located in the first sector area 21, and a plurality of first transition segments 312 are distributed in a sector shape in the first sector area 21. The first straight line segment 311 extends to the first sector area 21 and is electrically connected to the first transition segment 312, so that a plurality of first signal lines 31 are integrated into a plurality of groups of first signal lines 31, and the extension paths of the plurality of groups of first signal lines 31 are changed to avoid the display light-transmitting area 100c. The spacing between two adjacent first transition segments 312 in the first sector area 21 is smaller than the spacing between two adjacent first straight line segments 311. In order to avoid a short circuit due to a small spacing between two adjacent first transition segments 312, the plurality of first transition segments 312 in the first sector area 21 can be arranged in at least two layers.

[0100] The first detour segment 313 electrically connects all pixel driving circuit islands 10 in the first group of pixel driving circuit islands 10 in sequence. The first detour segment 313 may also be a straight line, an arc, or include a plurality of broken line segments.

[0101] Specifically, the second signal lines 32 may include data lines; each second signal line 32 includes a second straight line segment 321 , a second circuitous segment 323 and a second transition segment 322 .

[0102] Among them, the plurality of second straight line segments 321 of the plurality of second signal lines 32 are arranged vertically and in parallel. The vertical projections of the plurality of first straight line segments 311 of the plurality of first signal lines 31 on the display panel 100 and the vertical projections of the plurality of second straight line segments 321 of the plurality of second signal lines 32 on the display panel 100 intersect each other vertically. The second transition segment 322 is located in the second sector area 22, and the plurality of second transition segments 322 are distributed in a fan shape in the second sector area 22. The second straight line segment 421 extends to the second sector area 22 and is electrically connected to the second transition segment 322, so that the plurality of second signal lines 32 are integrated into a plurality of clusters of second signal lines 32, and the extension direction of the plurality of clusters of second signal lines 42 is changed to avoid the display light-transmitting area 100c. The spacing between two adjacent second transition segments 322 in the second sector area 22 is smaller than the spacing between two adjacent second straight line segments 321.

[0103] The multiple second straight line segments 321 of the multiple second signal lines 32 are divided into multiple clusters and extend to the multiple second sector areas 22 respectively to be electrically connected to the multiple second transition segments 322. Each cluster of the first straight line segments 311 extends to a corresponding second sector area 22. The multiple second transition segments 322 are divided into multiple clusters, and each cluster of the second transition segments 322 is located in the same second sector area 22. The multiple second sector areas 22 are symmetrically arranged on the opposite sides of the function additional area 12 and are arranged close to the first detour line. The second detour segments 323 of the multiple second signal lines 32 are arranged at the edge of the display light-transmitting area 100c. The second transition segments 322 are electrically connected to the second detour segments 323 one-to-one. The first detour segment 313 and the second detour segment 323 are located in different layers.

[0104] The two ends of each cluster of second detour segments 323 are respectively electrically connected to a cluster of second transition segments 322 , that is, the second detour segments 323 are electrically connected to the second transition segments 322 .

[0105] It should be noted that the area surrounded by the plurality of first winding segments 313 , the plurality of second winding segments 323 and at least a portion of the pixel driving circuit island 10 is the display light-transmitting area 100 c .

[0106] Furthermore, the edge of the first group of pixel driving circuit islands 10 at the edge of the display light-transmitting area 100c corresponding to the first detour section 313 is protruding or recessed to increase the light-transmitting area of ​​the display light-transmitting area 100c in the additional function area 100b.

[0107] like Fig. 12BAs shown, the display panel 100 also includes a plurality of connecting lines 40, and the connecting lines 40 and the second detour segments 323 are located in different layers, and each group of second detour segments 323 includes at least two clusters of second detour segments 323 with different lengths, and the two ends of each cluster of second detour segments 323 are electrically connected to two mirror-imaged pixel driving circuit islands 10 in the first group of pixel driving circuit islands 10 through the connecting lines 40, respectively, so as to avoid that two adjacent clusters of second detour segments 323 in the same group intersect and short-circuit during the extension process in order to achieve electrical connection with the pixel driving circuit island 10.

[0108] like Fig.13A , Fig. 13B As shown, Fig.13A The display panel 100 is shown with Fig. 12A The structure of the display panel 100 is basically similar, except that the second winding section 323 of the second signal line 32 is arranged in an arc shape.

[0109] Specifically, the second detour segment 323 of the second signal line 32 is arranged in a circular arc, and the overall shape of the light-transmitting area 100c is circular; the second detour segment 323 of the second signal line 32 is arranged in an elliptical arc, and the overall shape of the light-transmitting area 100c is elliptical.

[0110] like Fig.14A , Fig. 14B As shown, Fig.14A The display panel 100 is shown with Fig. 12A The structure of the display panel 100 is basically similar, except that at least part of the second detour segments 323 of the second signal lines 32 are arranged around the entire display light-transmitting area 100 c .

[0111] Some pixel driving circuit islands 10 are evenly arranged in a ring shape at the edge of the display light-transmitting area 100c. The second detour segments 323 of the plurality of second signal lines 32 are arranged around the light-transmitting area 121 and are sequentially electrically connected to at least some of the pixel driving circuit islands 10. The first detour segments 313 of the plurality of first signal lines 31 are sequentially electrically connected to any two adjacent pixel driving circuit islands 10 in the pixel driving circuit islands 10.

[0112] Furthermore, by adopting different circuit structures for the first pixel driving circuit 102 and the second pixel driving circuit 103, the area occupied by the first pixel driving circuit 102 in the function additional area 100b is smaller than the area occupied by the second pixel driving circuit 103 in the function additional area 100b, thereby increasing the size of the display light-transmitting area 100c.

[0113] For example, the device area of ​​the first pixel driving circuit 102 is smaller than the device area of ​​the second pixel driving circuit 103, and the device area is mainly determined by the number of devices and the device size. Specifically, the second pixel driving circuit 103 adopts a 7T1C circuit structure, and the first pixel driving circuit 102 can adopt any one of a 2T1C, 4T1C, and 6T1C circuit structure; further, the device size of the first pixel driving circuit 102 is smaller than the device size of the second pixel driving circuit 103, and in this case, the first pixel driving circuit 102 can also adopt a 7T1C circuit structure.

[0114] For another example, the wiring space of the first pixel driving circuit 102 is smaller than the wiring space of the second pixel driving circuit 103. Specifically, when the first pixel driving circuit 102 adopts a 2T1C, 4T1C and 7T1C circuit structure, at least two of the first pixel driving circuits 102 can share one signal line and be symmetrically arranged along the signal line. The signal line can be a power signal line. The wiring space of the first pixel driving circuit 102 is reduced compared to the wiring space of the second pixel driving circuit 103.

[0115] An embodiment of the present invention further provides a display device, which includes the above-mentioned display panel 100 and a photosensitive element, wherein the photosensitive element is arranged on one side of the display panel 100 and corresponds to the function additional area 100b, wherein the photosensitive element can be a camera and an optical touch component.

[0116] The beneficial effect is: the display panel and the display device provided by the embodiments of the present invention, by arranging multiple first pixel driving circuits around the display light-transmitting area, and arranging multiple layers of transparent wires to electrically connect the first pixel anode and the first pixel driving circuit so that the first pixel driving circuit drives the first display pixel to emit light, are conducive to increasing the wiring space, and improving the transmittance of the display light-transmitting area, thereby improving the photo-taking and display effects of the under-screen camera.

[0117] In summary, although the present invention has been disclosed as above in terms of preferred embodiments, the above preferred embodiments are not intended to limit the present invention. A person skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope defined in the claims.

Claims

1. A display panel, characterized in that: The display panel has a main display area and at least one additional function area, the additional function area has at least one display light-transmitting area, and the display panel includes: A substrate, located in the main display area and the additional function area; A plurality of first pixel driving circuits are arranged on one side of the substrate, located at the periphery of the display light-transmitting area and located in the function-addition area; the plurality of first pixel driving circuits are arranged in an array and form a plurality of pixel driving circuit islands, and each of the pixel driving circuit islands includes a plurality of the first pixel driving circuits gathered together; A plurality of display pixels are arranged on a side of the first pixel driving circuit away from the substrate and located in the function-addition area; the display pixels located in the display light-transmitting area are electrically connected to the pixel driving circuit island; A plurality of signal lines are located on the substrate and are arranged on the same side as the first pixel driving circuit; the plurality of signal lines are located outside the display light-transmitting area and within the function-adding area, and the plurality of signal lines are electrically connected to a plurality of the first pixel driving circuits; Among them, at least part of the display pixels located at the periphery of the display light-transmitting area are electrically connected to the pixel driving circuit island, and at least part of the display pixels are overlapped with the pixel driving circuit island; the display panel also includes a plurality of fan-shaped areas overlapped with at least part of the signal wiring, and the fan-shaped areas are located on the side of the pixel driving circuit island away from the display light-transmitting area; the plurality of signal wirings located in the fan-shaped areas gradually shrink to a fan-shaped distribution in the direction toward the corresponding pixel driving circuit island.

2. The display panel according to claim 1, characterized in that: The plurality of pixel driving circuit islands are at least distributed on two opposite sides of the periphery of the display light-transmitting area; the fan-shaped area is provided on a side of each pixel driving circuit island away from the display light-transmitting area.

3. The display panel according to claim 2, characterized in that: At least part of the pixel driving circuit islands are evenly arranged in a ring shape at the edge of the display light-transmitting area.

4. The display panel according to claim 1, characterized in that: The plurality of signal lines include a plurality of first signal lines, each of the first signal lines includes a first straight line segment, a first transition segment and a first detour segment connected in sequence; the plurality of fan-shaped areas include a plurality of first fan-shaped areas; Multiple first straight line segments are arranged horizontally and in parallel; the first transition segment is located in the first fan-shaped area, and multiple first transition segments are distributed in a fan-shaped manner in the first fan-shaped area; the first detour segment is electrically connected to all pixel driving circuit islands in the first group of pixel driving circuit islands in sequence.

5. The display panel according to claim 4, characterized in that: The display light-transmitting area is convex or concave at an edge of the first group of pixel driving circuit islands corresponding to the edge of the first winding section.

6. The display panel according to claim 4, characterized in that: The plurality of signal routing lines further include a plurality of second signal lines, each of the second signal lines includes a second straight line segment, a second transition segment and a second circuitous segment connected in sequence; the plurality of fan-shaped areas further include a plurality of second fan-shaped areas; A plurality of the second straight line segments are arranged vertically and in parallel; the second transition segment is located in the second fan-shaped area, and the plurality of the second transition segments are distributed in a fan-shaped manner in the second fan-shaped area; the plurality of the second transition segments are divided into a plurality of clusters, and each cluster of the second transition segments is located in the same second fan-shaped area; The plurality of second straight line segments are divided into a plurality of clusters and respectively extend to a plurality of second sector-shaped areas and are electrically connected to a plurality of second transition segments; The second transition segments are electrically connected to the second detour segments one-to-one, and two ends of each cluster of the second detour segments are electrically connected to a cluster of the second transition segments respectively.

7. The display panel according to claim 6, characterized in that: The plurality of second sector-shaped areas are symmetrically arranged at opposite sides of the function-addition area and close to the first detour segment; the second detour segments of the plurality of second signal lines are arranged at the edge of the display light-transmitting area.

8. The display panel according to claim 7, characterized in that: The first winding segment and the second winding segment are located in different layers; a plurality of the first winding segments, a plurality of the second winding segments and at least a portion of the pixel driving circuit island enclose the display light-transmitting area.

9. The display panel according to any one of claims 6 to 8, characterized in that: The display panel also includes a plurality of connecting lines, wherein the connecting lines and the second detour segments are located in different layers, and the plurality of second detour segments include at least two clusters of second detour segments with different lengths, and both ends of each cluster of the second detour segments are electrically connected to two of the first group of pixel driving circuit islands that are mirror-arranged via the plurality of connecting lines.

10. The display panel according to any one of claims 6 to 8, characterized in that: The second circuitous section is arranged in an arc shape.

11. The display panel according to any one of claims 6 to 8, characterized in that: At least a portion of the second winding segment is disposed around the entire display light-transmitting area and is electrically connected to at least a portion of the pixel driving circuit islands in sequence.

12. The display panel according to claim 1, characterized in that: The pixel driving circuit island includes m×n array-arranged first pixel driving circuits, wherein m represents the number of rows of the first pixel driving circuits, n represents the number of columns of the first pixel driving circuits, m and n are both positive integers, and at least one of m and n is an integer greater than 1.

13. The display panel according to claim 1, characterized in that: The display panel further includes a transparent wiring, the plurality of display pixels include a plurality of first display pixels located in the display light-transmitting area, and each of the first display pixels is electrically connected to the first pixel driving circuit in the pixel driving circuit island through the transparent wiring.

14. The display panel according to claim 13, characterized in that: The transparent wiring has at least two layers, and each of the first display pixels is electrically connected to the corresponding first pixel driving circuit through at least one layer of the transparent wiring.

15. The display panel according to claim 13, characterized in that: The maximum distance between the first display pixel and the pixel driving circuit island is 300-5000 um.

16. The display panel according to claim 1, characterized in that: The display panel also includes a plurality of second display pixels and a plurality of second pixel driving circuits arranged on one side of the substrate and located in the main display area, wherein the second pixel driving circuit is located between the second display pixels and the substrate; at least some of the second display pixels are electrically connected to the second pixel driving circuit.

17. The display panel according to claim 16, characterized in that: Part of the second display pixels located in the main display area and close to the function additional area is electrically connected to the first pixel driving circuit.

18. A display device, characterized in that: The display device comprises the display panel according to any one of claims 1 to 17; and A photosensitive element is arranged at one side of the display panel and corresponds to the function additional area.

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