Display panel and display device

Abstract

The invention discloses a display panel and a display device, the display panel comprises a substrate, a display area comprises a first area, a second area and a transition area, and the light transmittance of the first area is greater than that of the second area; a plurality of first light-emitting elements located in the first area; the plurality of second light-emitting elements, the plurality of first pixel circuits and the plurality of second pixel circuits are located in the transition area, the plurality of first pixel circuits are distributed among the plurality of second pixel circuits at intervals, and the orthographic projection of at least one second pixel circuit and the orthographic projection of at least one second light-emitting element on the substrate are at least partially overlapped; a plurality of first conductive lines, each first conductive line being connected between the at least one first pixel circuit and the at least one first light emitting element; and the at least one third conductive line is connected between the at least one first pixel circuit and the at least one first light-emitting element, and the third conductive line and the first conductive line are arranged in different layers. The display panel and the display device can solve the problem that the brightness of the under-screen camera area is not uniform.

Description

[0001] This application is a divisional application. The application number of the original application is 202080003685.9, the application date is December 25, 2020, and the invention title is "Display Panel and Display Device". Technical Field

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

[0003] In related technologies, in order to pursue a larger display area and increase the screen-to-body ratio, full-screen display products have emerged. For front cameras, many full-screen display products adopt under-screen cameras. By reducing the PPI of the pixel arrangement in the transparent area of the camera and increasing the transmittance, the imaging quality of the transparent area of the camera can be improved, while also having the function of display. However, there are currently problems such as uneven brightness in the under-screen camera area and too small a camera area. Summary of the Invention

[0004] Embodiments of the present disclosure provide a display panel and a display device, which can solve problems such as uneven brightness and too small a camera area in the under-screen camera area in related technologies.

[0005] The technical solutions provided by the embodiments of the present disclosure are as follows:

[0006] Embodiments of the present disclosure provide a display panel, including:

[0007] A substrate, the substrate includes a display area, the display area includes a first area, a second area located outside the first area, and a transition area located between the first area and the second area, and the light transmittance of the first area is greater than that of the second area;

[0008] A plurality of first light-emitting elements, located in the first area;

[0009] A plurality of second light-emitting elements, a plurality of first pixel circuits, and a plurality of second pixel circuits, located in the transition area, and the plurality of first pixel circuits are spaced apart and distributed between the plurality of second pixel circuits, and at least one second pixel circuit has at least partial overlap with at least one second light-emitting element in the orthographic projection on the substrate;

[0010] A plurality of first conductive lines, each first conductive line is connected between at least one first pixel circuit and at least one first light-emitting element;

[0011] A plurality of second conductive lines, each second conductive line is connected to at least one first pixel circuit and extends along the at least one first pixel circuit to a side away from the at least one first light-emitting element.

[0012] Exemplarily, the positive projection of the second conductive line on the substrate substrate overlaps with the positive projection of at least one first pixel circuit or at least one second pixel circuit on the substrate substrate.

[0013] Exemplarily, the second conductive line extends along the at least one first pixel circuit to the boundary between the second region and the transition region on a side away from the at least one first light-emitting element.

[0014] Exemplarily, one ends of multiple second conductive lines extending to the boundary between the second region and the transition region are all located within the transition region.

[0015] Exemplarily, one ends of multiple second conductive lines extending to the boundary between the second region and the transition region are all located within the second region.

[0016] Exemplarily, among multiple second conductive lines, one ends of a part of the second conductive lines extending to the boundary between the second region and the transition region are located within the transition region, and one ends of another part of the second conductive lines extending to the boundary between the second region and the transition region are located within the second region.

[0017] Exemplarily, the display panel further includes: multiple third light-emitting elements located in the second region, the third light-emitting elements at least include one first sub-pixel, one second sub-pixel and two third sub-pixels, the two third sub-pixels are arranged in the same column but different rows, the first sub-pixel and the second sub-pixel are both located on the same side of the two third sub-pixels, and the first sub-pixel and the second sub-pixel are arranged in different columns and different rows;

[0018] In a first direction, the region boundary of the first region includes an opposite first side boundary and a second side boundary. At the first side boundary, the two third sub-pixels are located on a side close to the transition region, the first sub-pixel and the second sub-pixel are located on a side away from the transition region, and the first direction is the row direction of the third light-emitting element;

[0019] At the first side boundary, one ends of the second conductive lines extending to the intersection line between the transition region and the second region are flush, and a first distance is maintained between the one ends and the third sub-pixel closest to the transition region within the second region;

[0020] At the second side boundary, one ends of the second conductive lines extending to the intersection line between the transition region and the second region are not flush, and a second distance is maintained between the one ends and the first sub-pixel closest to the transition region within the second region, and a third distance is maintained between the one ends and the second sub-pixel closest to the transition region within the second region.

[0021] Exemplarily, the first distance, the second distance, and the third distance are all greater than or equal to 2 micrometers.

[0022] Exemplarily, the angle between the first conductive line and the second conductive line is 175±5°.

[0023] Exemplarily, the first pixel circuit includes a dummy electrode, which is located on a side of the first conductive line away from the substrate and is electrically connected to the first conductive line.

[0024] Exemplarily, the display panel also includes: a plurality of third light-emitting elements and a plurality of third pixel circuits, the third light-emitting elements and the third pixel circuits are located in the second area, and the arrangement density of the third light-emitting elements is greater than or equal to the arrangement density of the first light-emitting elements in the first area and the second light-emitting elements in the transition area.

[0025] Exemplarily, the light transmittance of the first conductive line and the second conductive line is greater than or equal to 50%.

[0026] Exemplarily, the first conductive line and the second conductive line are provided in the same layer and with the same material.

[0027] Exemplarily, the first conductive wire is an indium tin oxide wire or an indium zinc oxide wire; the second conductive wire is an indium tin oxide wire or an indium zinc oxide wire.

[0028] Exemplarily, the display panel further includes: at least one third conductive line, each of the third conductive lines connecting at least one first pixel circuit and at least one first light-emitting element, and the third conductive lines and the first conductive lines are arranged in different layers.

[0029] Exemplarily, the first pixel circuit includes a virtual electrode, and the third conductive line and the virtual electrode are provided in the same layer and with the same material.

[0030] Exemplarily, the third conductive line is led out from the virtual electrode in the transition region that is closest to the first region, and is connected to the first light-emitting element in the first region that is closest to the transition region.

[0031] An embodiment of the present disclosure further provides a display device, comprising the display panel as described above.

[0032] Exemplarily, a camera element is provided on the non-display side of the first area.

[0033] The beneficial effects brought about by the embodiments of the present disclosure are as follows:

[0034] The display panel and the display device provided by the embodiments of the present disclosure have a display area including a first area, a second area, and a transition area. The light transmittance of the first area is greater than that of the second area (for example, the first area can be used as an under-screen camera area). In order to improve the light transmittance of the first area, the control lines of the first area are optimized. Only the first light-emitting elements are provided in the first area, and no pixel circuits are provided. A plurality of second light-emitting elements, a plurality of first pixel circuits, and a plurality of second pixel circuits are provided in the second area, where the first pixel circuits and the second pixel circuits are distributed at intervals, and the second pixel circuits are connected to the second light-emitting elements for driving the second light-emitting elements; at least one of the first pixel circuits is connected to at least one of the first light-emitting elements through a first conductive wire. In this way, the second pixel circuits in the transition area can drive the second light-emitting elements in the transition area to emit light, and the first pixel circuits in the transition area can drive the first light-emitting elements in the first area. Therefore, no pixel circuits need to be arranged in the first area, and only the first light-emitting elements are provided, thereby improving the light transmittance of the first area, and the size of the first area can also be unrestricted; in addition, a second conductive wire is also provided in the transition area, and each second conductive wire is connected to at least one first pixel circuit and extends along the at least one first pixel circuit to the side away from the at least one first light-emitting element, that is, the first conductive wire is extended in the reverse direction to the boundary between the transition area and the second area, so that each second conductive wire is controlled to pass through as similar an environment as possible in the transition area. Thus, the parasitic capacitance between the first conductive wire for controlling the first light-emitting elements in the first area to emit light and the pixel circuits in the transition area is substantially the same, so as to solve the problem of uneven brightness existing in the under-screen camera area in the related art. Description of the Drawings

[0035] Figure 1 A schematic diagram showing the display area of a display panel provided by an embodiment of the present disclosure;

[0036] Figure 2 A schematic diagram showing the connection between the first light-emitting elements and the first pixel circuits in the first area of the display panel in some embodiments provided by the present disclosure, where only a part of the first conductive wires are shown, and not all the first conductive wires are shown;

[0037] Figure 3 A schematic diagram showing the connection between the first light-emitting elements in the first area and the first pixel circuits in the transition area of the display panel in other embodiments provided by the present disclosure, where only a part of the first conductive wires and the second conductive wires are shown, and not all the first conductive wires and the second conductive wires are shown;

[0038] Figure 4Schematic diagram showing the overlap of the virtual electrode and the first conductive line of the first pixel circuit in the transition region of the display panel provided in some embodiments of the present disclosure;

[0039] Figure 5 Schematic diagram showing the structure of each second conductive line of the display panel at the second side boundary of the first region in some embodiments of the present disclosure;

[0040] Figure 6 Schematic diagram showing the structure of each second conductive line of the display panel at the first side boundary of the first region in some embodiments of the present disclosure;

[0041] Figure 7 Schematic diagram showing the pixel arrangement structure of the third light-emitting element of the display panel in some embodiments of the present disclosure;

[0042] Figure 8 Schematic diagram showing a way of matching the first conductive line and the fourth conductive line to drive the first light-emitting element in the first region in some embodiments of the present disclosure. Detailed implementation manners

[0043] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. Apparently, the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present disclosure without creative efforts shall fall within the scope of protection of the present disclosure.

[0044] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure shall have the ordinary meanings understood by those of ordinary skill in the art to which the present disclosure pertains. The "first", "second", and similar terms used in the present disclosure do not denote any order, quantity, or importance, but are only used to distinguish different components. Similarly, the terms such as "a", "an", or "the" do not denote a quantity limitation, but mean that there is at least one. The terms such as "include" or "comprise" mean that the elements or objects appearing before the term cover the elements or objects listed after the term and their equivalents, without excluding other elements or objects. The terms such as "connect" or "couple" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms such as "upper", "lower", "left", "right", etc. are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0045] Before providing a detailed description of the display panel and the display device provided in the embodiments of the present disclosure, it is necessary to provide the following description of the related art:

[0046] In the related art, in order to pursue a larger display area and increase the screen-to-body ratio, full-screen display products have emerged. For the front camera, many full-screen display products adopt an under-screen camera. By reducing the PPI (pixel density) of the pixel arrangement in the camera area (Camera area), the transmittance is increased so that the imaging quality of the transparent area of the camera is better, while also having the function of display. The display area of the AA area of the under-screen camera is divided into a high-density pixel area (a) and a low-density pixel area (b). The high-density pixel area is also called the H area (High PPI area), and the low-density pixel area is also called the L area (Low PPI area). Among them, the camera area (c) is designed in the L area, and the non-Camera area of the L area is called the transition area. However, there are currently problems such as uneven brightness in the under-screen camera area and too small a size of the camera area.

[0047] In order to improve problems such as uneven brightness in the camera area and too small a size of the camera area, in the embodiments of the present disclosure, the matching relationship between the signal traces, control lines, and light-emitting devices in the camera area of the L area is designed and optimized to achieve the purpose of uniform brightness in the under-screen camera area and an unrestricted size of the camera area.

[0048] Figure 1 Schematic diagram showing a display area of a display panel provided in an embodiment of the present disclosure; Figure 2 and Figure 3 Shown is a partial structural schematic diagram of the display area of the display panel provided in an embodiment of the present disclosure. In order to clearly illustrate the connection relationship of the signal leads in the display panel provided in the embodiment of the present disclosure, Figure 2 and Figure 3 only a part of the connection relationship is schematically shown, and not all the routing connection relationships are schematically shown.

[0049] As Figures 1 to 3 shown, the embodiments of the present disclosure provide a display panel, including:

[0050] A substrate, the substrate includes a display area, the display area includes a first area c, a second area a located outside the first area c, and a transition area b located between the first area c and the second area a, and the light transmittance of the first area c is greater than that of the second area a;

[0051] A plurality of first light-emitting elements 100, located in the first area c;

[0052] A plurality of second light-emitting elements 200, a plurality of first pixel circuits 300, and a plurality of second pixel circuits 400 are located in the transition region b, and the plurality of first pixel circuits 300 are spaced apart and distributed between the plurality of second pixel circuits 400. The orthographic projection of at least one second pixel circuit 400 on the substrate at least partially overlaps with the orthographic projection of at least one second light-emitting element 200 on the substrate;

[0053] A plurality of first conductive lines 500, each of the first conductive lines 500 being connected between at least one first pixel circuit 300 and at least one first light-emitting element 100;

[0054] A plurality of second conductive lines 600, each of the second conductive lines 600 being connected to at least one first pixel circuit 300 and extending along the at least one first pixel circuit 300 to a side away from the at least one first light-emitting element 100.

[0055] Before elaborating on the embodiments of the present disclosure in detail, the following explanations are provided: Figure 2 In order to more clearly show the connection relationship between the first conductive line 500 and the first pixel circuit and the first light-emitting element, and the connection relationship between the first conductive line 500 and the second conductive line 600, the second conductive line 600 is not shown; Figure 3 The second conductive line 600 is shown. And Figure 2 and Figure 3 Only a part of the conductive lines on the left side of the first region in the figure is shown, and the conductive lines on the right side of the first region in the figure are not shown.

[0056] In the display panel provided by the embodiments of the present disclosure, the first region c of the display region can be used as a light-transmitting region for an in-screen camera, and the second region a can be a normal display region.

[0057] The first light-emitting element 100 and the second light-emitting element 200 refer to elements that can emit light. For example, the first light-emitting element 100 and the second light-emitting element 200 may include EL devices (electroluminescent devices).

[0058] It should be noted that in the above solution, at least one of the first pixel circuits 300 is connected to at least one of the first light-emitting elements 100 through a first conductive wire 500. That is to say, one of the first pixel circuits 300 can be used to drive at least one of the first light-emitting elements 100 in the first region c. For ease of description, the first pixel circuit 300 and the first light-emitting element 100 connected thereto through the first conductive wire 500 are referred to as a pairing unit. Each of the second conductive wires 600 is connected to at least one first pixel circuit 300 and extends along the at least one first pixel circuit 300 to a side away from the at least one first light-emitting element 100, which means that each of the second conductive wires 600 extends from the first pixel circuit 300 connected to the second conductive wire 600 in a direction away from the first light-emitting element 100 that forms a pairing unit with the first pixel circuit 300.

[0059] In the above solution, in order to improve the light transmittance of the first region c, the control lines of the first region c are optimized. Only the first light-emitting element 100 is provided in the first region c, and no pixel circuit is provided; a plurality of second light-emitting elements 200, a plurality of first pixel circuits 300, and a plurality of second pixel circuits 400 are provided in the second region a. Among them, the first pixel circuits 300 and the second pixel circuits 400 are distributed at intervals, and the second pixel circuit 400 is connected to the second light-emitting element 200 for driving the second light-emitting element 200, and the orthographic projection of the second pixel circuit 400 on the substrate substantially overlaps at least partially with the orthographic projection of the second light-emitting element 200 on the substrate. That is to say, the second pixel circuit 400 is a pixel circuit capable of driving a light-emitting element, while the first pixel circuit 300 is a pixel circuit (Dummy pixel) that cannot drive a light-emitting element. At least one of the first pixel circuits 300 is connected to at least one of the first light-emitting elements 100 through a first conductive wire 500. In this way, the second light-emitting element 200 in the transition region b can be driven to emit light through the second pixel circuit 400 in the transition region b, and the first pixel circuit 300 in the transition region b drives the first light-emitting element 100 in the first region c. Thus, the first region c can be made into a structure in which no pixel circuit is arranged and only the first light-emitting element 100 is provided to improve the light transmittance of the first region c, and the size of the first region c can also be unrestricted; in addition, a second conductive wire 600 is further provided in the transition region b. Each second conductive wire 600 is connected to at least one first pixel circuit 300 and extends along the at least one first pixel circuit 300 to the side away from the at least one first light-emitting element 100. That is, the first conductive wire 500 is extended to the boundary between the transition region b and the second region a, so that when each second conductive wire 600 is controlled, the environment passed through in the transition region b is as similar as possible. Thus, the parasitic capacitance between the first conductive wire 500 for controlling the first light-emitting element 100 in the first region c and the pixel circuit in the transition region b is substantially the same, so as to solve the problem of uneven brightness existing in the under-screen camera region in the related art.

[0060] In some exemplary embodiments, the orthographic projection of the second conductive wire 600 on the substrate overlaps with the orthographic projection of the at least one first pixel circuit 300 or at least one second pixel circuit 400 on the substrate.

[0061] In addition, in some exemplary embodiments of the present disclosure, the second conductive wire 600 extends along the at least one first pixel circuit 300 to a side away from the at least one first light-emitting element 100 and extends to the boundary between the second region a and the transition region b. In this way, it can be ensured as much as possible that the environments passed by each second conductive wire 600 in the transition region b are substantially the same.

[0062] In some exemplary embodiments, one end of each of the plurality of second conductive wires 600 extending to the boundary between the second region a and the transition region b is located within the transition region b;

[0063] Alternatively, one end of each of the plurality of second conductive wires 600 extending to the boundary between the second region a and the transition region b is located within the second region a;

[0064] Alternatively, among the plurality of second conductive wires 600, one end of some of the second conductive wires 600 extending to the boundary between the second region a and the transition region b is located within the transition region b, and one end of the other part of the second conductive wires 600 extending to the boundary between the second region a and the transition region b is located within the second region a.

[0065] In the above solution, in order to ensure that the environments passed by each second conductive wire 600 are substantially the same while avoiding adverse interference on the second region a caused by the second conductive wire 600, according to the pixel circuit structure of the second region a in the actual product, one end of the second conductive wire 600 extending to the boundary between the transition region b and the second region a can be located within the transition region b, can also be located within the second region a, or one end of some of the second conductive wires 600 can be located within the transition region b and one end of the other part of the second conductive wires 600 can be located within the second region a.

[0066] The following is an exemplary description of the above solution.

[0067] The display panel further includes: a plurality of third light-emitting elements 700 located in the second region a, and the pixel arrangement structures of the first light-emitting element 100, the second light-emitting element 200, and the third light-emitting element 700 may be the same or different. Hereinafter, an example will be given in which the pixel arrangement structures of the first light-emitting element 100, the second light-emitting element 200, and the third light-emitting element 700 are the same.

[0068] In some exemplary embodiments, such as Figure 5 , Figure 6 and Figure 7As shown, the third light-emitting element 700 at least includes one first sub-pixel 11, one second sub-pixel 12, and two third sub-pixels 13. The two third sub-pixels 13 are arranged in the same column but different rows. The first sub-pixel 11 and the second sub-pixel 12 are both located on the same side of the two third sub-pixels 13, and the first sub-pixel 11 and the second sub-pixel 12 are arranged in different columns and different rows. For example, the first sub-pixel 11 can be a red sub-pixel, the second sub-pixel 12 can be a blue sub-pixel, and the third sub-pixel 13 can be a green sub-pixel.

[0069] As can be seen from Figures 4 to 7 , in the first direction, that is, in the row direction of the third light-emitting element 700, the boundary shapes of the relative two sides of each third light-emitting element 700 are different. On the first side ( Figure 5 the right side shown), the right boundaries of the first sub-pixel 11 and the second sub-pixel 12 are not flush. On the second side ( Figure 6 the left side shown), the left boundaries of the two third sub-pixels 13 are flush.

[0070] Therefore, as shown in Figure 3 , Figure 5 and Figure 6 , in the first direction, the region boundary of the first region c includes opposite first side boundary c1 and second side boundary c2. On the first side boundary c1, the two third sub-pixels 13 are located on the side close to the transition region b, and the first sub-pixel 11 and the second sub-pixel 12 are located on the side far from the transition region b. The first direction is the row direction of the third light-emitting element 700;

[0071] On the first side boundary c1, each second conductive line 600 extends to be flush with one end of the boundary line between the transition region b and the second region a, and maintains a first distance D1 from the third sub-pixel 13 closest to the transition region b in the second region a;

[0072] On the second side boundary c2, each second conductive line 600 extends to be not flush with one end of the boundary line between the transition region b and the second region a, and maintains a second distance D2 from the first sub-pixel 11 closest to the transition region b in the second region a, and maintains a third distance D3 from the second sub-pixel 12 closest to the transition region b in the second region a.

[0073] It should be noted that the above is only an example. In actual applications, the end positions of each second conductive line 600 extending to the boundary line between the transition region b and the second region a should be adjusted according to the actual placement positions of the sub-pixels of the pixel unit.

[0074] Exemplarily, the first distance D1, the second distance D2, and the third distance D3 are all greater than or equal to 2 micrometers.

[0075] In addition, in some exemplary embodiments, the light transmittance of the first conductive wire 500 and the second conductive wire 600 is greater than or equal to 50%, that is to say, the first conductive wire 500 and the second conductive wire 600 are selected as transparent conductive wires to ensure that the first region c has a good light transmittance. The value range of the light transmittance of the first conductive wire 500 and the second conductive wire 600 can be 50% - 70%. For example, the first conductive wire 500 and the second conductive wire 600 can both be selected as indium tin oxide wires (ITO wires). The materials of the first conductive wire 500 and the second conductive wire 600 are not limited thereto. For example, the materials of the first conductive wire 500 and the second conductive wire 600 can also be selected as indium zinc oxide wires (IZO wires), etc.

[0076] In addition, in some exemplary embodiments, the first conductive wire 500 and the second conductive wire 600 can be arranged in the same layer and made of the same material. That is to say, the corresponding first conductive wire 500 and second conductive wire 600 are made on the same conductive wire. Of course, it can be understood that in practical applications, the first conductive wire 500 and the second conductive wire 600 can also be arranged in the same layer with different materials, or arranged in different layers with different materials.

[0077] In addition, in some exemplary embodiments, as Figure 3 shown, the included angle between the first conductive wire 500 and the second conductive wire 600 is 175 ± 5°. In the above solution, the second conductive wire 600 and the first conductive wire 500 can be on the same straight line, but it is not limited thereto. In practical applications, in combination with the circuit layout of the product itself, there can also be a certain included angle between the second conductive wire 600 and the second conductive wire 600.

[0078] In addition, in some embodiments of the present disclosure, as Figure 4 shown, the first pixel circuit 300 can include a virtual electrode 310 and does not include a light-emitting element. The virtual electrode 310 of the first pixel circuit 300 is located on the side of the first conductive wire 500 away from the substrate, and is electrically connected to the first conductive wire 500.

[0079] In the above solution, a virtual electrode 310 is included in the first pixel circuit 300. The shape of the virtual electrode 310 may be the same as the shape of the electrode in the second pixel circuit 400. The virtual electrode 310 may be an electrode structure such as a virtual anode or a virtual cathode. The virtual electrode 310 in the first pixel circuit 300 is used to connect to the first conductive wire 500. Compared with the method of using other parts of the first pixel circuit 300 to connect to the first conductive wire 500, it can ensure that the first conductive wire 500 is in a straight state.

[0080] For example, Figure 4 As shown, the second pixel circuit 400 includes an electrode 410 and a source-drain metal layer (i.e., SD layer, not shown in the figure) connected to the electrode 410. The first pixel circuit 300 includes a virtual electrode 310 and a source-drain metal layer connected to the virtual electrode 310. The source-drain metal layer is located on the side of the virtual electrode 310 close to the substrate. A first insulating layer is provided between the source-drain metal layer and the virtual electrode 310. The virtual electrode 310 and the source-drain metal layer are overlapped through a via 311 on the first insulating layer, as Figure 4 shown, one virtual electrode 310 and the source-drain metal layer are overlapped through two vias 311. The first conductive wire may be located between the virtual electrode 310 and the source-drain metal layer. The first conductive wire 500 may be directly overlapped with the virtual electrode 310. As Figure 4 shown, the position marked d in the figure is the overlapping position of the first conductive wire 500 and the virtual electrode 310.

[0081] In addition, in some exemplary embodiments of the present disclosure, the display panel further includes: a plurality of third light-emitting elements 700 and a plurality of third pixel circuits. The third light-emitting elements 700 and the third pixel circuits are located in the second region a, and the arrangement density of the third light-emitting elements 700 is greater than or equal to the arrangement density of the first light-emitting elements 100 in the first region c and the second light-emitting elements 200 in the transition region b.

[0082] In the above embodiment, in order to ensure that the first region c has better light transmittance, the arrangement density of the first light-emitting elements 100 in the first region c is less than the arrangement density of the third light-emitting elements 700 in the second region a, and the arrangement density of the second light-emitting elements 200 in the transition region b is less than the arrangement density of the third light-emitting elements 700 in the second region a, so as to ensure that the first region c has better light transmittance.

[0083] Of course, it can be understood that in practical applications, the arrangement density of the first light-emitting elements 100 in the first region c can also be the same as that of the third light-emitting elements 700 in the second region a to ensure better display effects in the first region c.

[0084] In addition, in some embodiments of the present disclosure, as Figure 3 shown, in the transition region b, a fourth conductive line 800 and a fifth conductive line 900 are further connected to each column of the first pixel circuits 300. The fourth conductive line 800 and the fifth conductive line 900 are used to control data signals on each column of the first pixel circuits 300.

[0085] In the second direction, that is, in the column direction of the first light-emitting elements 100, the boundaries of the first region c further include opposite third side boundaries c3 and fourth side boundaries c4. Among them, each fourth conductive line 800 extends from the third side boundary c3 of the first region c, around the first side boundary c1 line or around the second side boundary c2 line of the first region c, to the fourth side boundary c4 of the first region c. A fifth conductive line 900 is connected to each column of the first pixel circuits 300, and one end of the fifth conductive line 900 is connected to the corresponding fourth conductive line 800.

[0086] In addition, in some exemplary embodiments of the present disclosure, due to the line width of the first conductive line 500 itself and dimensions such as gaps, limited by the layout space dimensions of the pixel circuits and the light-emitting elements, there may be a problem that there is not enough space to arrange a sufficient number of the first conductive lines 500 to drive the first light-emitting elements 100.

[0087] To solve the above problems, in some embodiments of the present disclosure, as Figure 8 shown, the display panel further includes: at least one third conductive line 510. Each third conductive line 510 is connected between at least one first pixel circuit 300 and at least one first light-emitting element 100, and the third conductive line 510 and the first conductive line 500 are provided in different layers.

[0088] In the above solution, a part of the first light-emitting elements 100 can be driven by the first conductive line 500, and another part of the first light-emitting elements 100 can also be driven by the third conductive line 510 provided in a different layer from the first conductive line 500 to solve the problem that the number of the first conductive lines 500 is insufficient to drive all the first light-emitting elements 100.

[0089] Among them, by way of example, the first pixel circuit 300 includes a virtual electrode 310, and the third conductive line 510 and the virtual electrode 310 are provided in the same layer and made of the same material.

[0090] In the above solution, the third conductive line 510 can be led out by using the virtual electrode 310 in the first pixel circuit 300 within the transition region b to drive the first light-emitting element 100 within the first region c.

[0091] Of course, it can be understood that the above is only an example. In practical applications, other materials or conductive lines of other layers can also be used to fabricate the third conductive line 510.

[0092] In addition, by way of example, as Figure 8 shown, the third conductive line 510 is led out from the virtual electrode 310 closest to the first region c within the transition region b and is connected to the first light-emitting element 100 closest to the transition region b within the first region c.

[0093] Adopting the above solution, since the virtual electrode 310 is usually made of an opaque metal, in order to minimize the influence of the third conductive line 510 on the light transmittance, the virtual electrode 310 closest to the first region c should be selected to lead out the trace to form the third conductive line 510.

[0094] To facilitate the understanding of the above solution, the following is an example for illustration:

[0095] For example, Figure 8 as shown, the matching manner of the first conductive line 500 and the third conductive line 510 depends on the number of the first light-emitting elements 100 within the first region c. Taking the GGRB pixel arrangement of the light-emitting elements as an example, the pixel pitch is 60.2 μm. Taking the case where the PPI of the first region c is 1 / 2 of the PPI of the second region a for calculation, the minimum cycle unit of the L region is 60.2 * 4 = 240.8 μm, and the designed diameter of the first region c is 3000 μm, and the line width of the data signal trace is 200 μm. Then, the number of the first light-emitting elements 100 within the first region c is (3000 + 200 * 2) / 240.8 = 14 groups (as Figure 8 shown), so the total number of control leads required for the first light-emitting elements 100 within the first region c is (14 / 2) * 8 = 56.

[0096] Taking the pitch between the first conductive wires 500 to be about 4 μm as an example, due to the limitation of the longitudinal dimension of the first light-emitting element 100, excluding the space and margin at the via holes, it is about 8.2 μm. Then the number of the first conductive wires 500 that can be arranged by one minimum first light-emitting element 100 is [(60.2 - 8.2) / 4]*4 = 52. Therefore, it is impossible to drive all the first light-emitting elements 100 only by the first conductive wires 500, and it is necessary to cooperate with the third conductive wires 510 to drive all the first light-emitting elements 100.

[0097] As Figure 8 shown, the light-emitting signals of the half-group of the first light-emitting elements 100 at the edge of the first region c are controlled by the third conductive wires 510 led out by the virtual electrodes 310. In this way, within the gap (Pixel Pitch) of two first light-emitting elements 100, there will be one remaining first conductive wire 500 each (as shown by the reference numerals e and f in Figure 8 ), which can be used to control the light-emitting devices of other first light-emitting elements 100.

[0098] It should be noted that the above is only an example. In actual applications, the matching manner of the first conductive wires 500 and the third conductive wires 510 can be determined according to parameters such as the dimensions of the conductive wires and the dimensions of the light-emitting elements in the actual product.

[0099] In addition, the embodiment of the present disclosure also provides a display device, including the display panel provided by the embodiment of the present disclosure. The display device can be a display device with an under-screen camera, and a camera element is arranged on the non-display side of the first region c of the display panel. Obviously, the display device provided by the embodiment of the present disclosure can also bring the beneficial effects that the display panel provided by the embodiment of the present disclosure can bring, which will not be elaborated here.

[0100] The following points need to be explained:

[0101] (1) The drawings of the embodiment of the present disclosure only relate to the structures involved in the embodiment of the present disclosure, and other structures can refer to the general design.

[0102] (2) For clarity, in the drawings used to describe the embodiments of the present disclosure, the thickness of the layer or region is enlarged or reduced, that is, these drawings are not drawn according to the actual ratio. It can be understood that when an element such as a layer, a film, a region or a substrate is referred to as being "on" or "under" another element, the element can be "directly" on or under the other element or there can be an intermediate element.

[0103] (3) Without conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0104] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. The protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims

1. A display panel, characterized in that, The display panel includes: a substrate substrate, the substrate substrate includes a display area, the display area includes a first area, a second area located around the first area, and a transition area located between the first area and the second area, the light transmittance of the first area is greater than that of the second area; a plurality of first light-emitting elements, located in the first area; a plurality of second light-emitting elements, a plurality of first pixel circuits and a plurality of second pixel circuits, located in the transition area, and the plurality of first pixel circuits are distributed at intervals between the plurality of second pixel circuits, and at least one of the plurality of second pixel circuits is at least partially overlapped with at least one of the plurality of second light-emitting elements in the orthographic projection on the substrate substrate; a plurality of first conductive wires, each of the first conductive wires is connected between at least one of the plurality of first pixel circuits and at least one of the plurality of first light-emitting elements; at least one third conductive wire, each of the third conductive wires is connected between at least one of the plurality of first pixel circuits and at least one of the plurality of first light-emitting elements, and the third conductive wire and the first conductive wire are provided on different layers.

2. The display panel according to claim 1, wherein The at least one first pixel circuit includes a virtual electrode, and the at least one third conductive wire is provided on the same layer and made of the same material as the corresponding virtual electrode.

3. The display panel according to claim 2, wherein The at least one third conductive wire is led out from the virtual electrode closest to the first area in the transition area and connected to the first light-emitting element closest to the transition area in the first area.

4. The display panel according to claim 1, wherein The at least one first pixel circuit includes a virtual electrode, the virtual electrode is located on the side of the first conductive wire away from the substrate substrate, and the first conductive wire is electrically connected to the corresponding virtual electrode.

5. The display panel according to claim 4, wherein The first pixel circuit includes the virtual electrode and a source-drain metal layer, the source-drain metal layer is located on the side of the virtual electrode close to the substrate substrate, and a first insulating layer is provided between the source-drain metal layer and the virtual electrode, and one virtual electrode and the source-drain metal layer are overlapped through a via hole on the first insulating layer.

6. The display panel according to claim 5, characterized in that, The at least one first conductive wire is located between the virtual electrode and the source-drain metal layer, and the first conductive wire is directly overlapped with the virtual electrode.

7. The display panel according to claim 1, wherein In the transition area, a fourth conductive wire and a fifth conductive wire are further connected to the at least one first pixel circuit, and the fourth conductive wire and the fifth conductive wire are used to control data signals on the corresponding connected first pixel circuit; wherein, In a first direction, the area boundary of the first area includes opposite first side boundary and second side boundary, and the first direction is the row direction of the plurality of first light-emitting elements arranged in an array; In the column direction of the plurality of first light-emitting elements arranged in an array, the boundary of the first area includes opposite third side boundary and fourth side boundary; Each of the fourth conductive lines extends from the third side boundary around the first side boundary or around the second side boundary to the fourth side boundary, and one of the fifth conductive lines is connected to each column of the first pixel circuits, and one end of the fifth conductive line is connected to the corresponding fourth conductive line.

8. The display panel according to claim 2, wherein The at least one second pixel circuit includes an electrode, and the virtual electrode has the same shape as the electrode, and the virtual electrode is a virtual anode or a virtual cathode.

9. The display panel according to claim 1, wherein The display panel further includes: A plurality of second conductive lines, which are formed by the first conductive line extending reversely towards the boundary between the transition region and the second region, each of the second conductive lines is connected to the at least one first pixel circuit and extends along the at least one first pixel circuit towards the side away from the at least one first light-emitting element; wherein, The orthographic projection of the second conductive line on the substrate overlaps with the orthographic projection of the at least one first pixel circuit or the at least one second pixel circuit on the substrate.

10. The display panel according to claim 9, wherein The second conductive line extends along the at least one first pixel circuit towards the side away from the at least one first light-emitting element to the boundary between the second region and the transition region.

11. The display panel according to claim 10, wherein One ends of the plurality of second conductive lines extending to the boundary between the second region and the transition region are all located within the transition region; or, One ends of the plurality of second conductive lines extending to the boundary between the second region and the transition region are located within the second region; or, Among the plurality of second conductive lines, one ends of some of the second conductive lines extending to the boundary between the second region and the transition region are located within the transition region, and one ends of the other second conductive lines extending to the boundary between the second region and the transition region are located within the second region.

12. The display panel according to claim 11, wherein The display panel further includes: a plurality of third light-emitting elements located in the second region, the third light-emitting elements at least include one first sub-pixel, one second sub-pixel and two third sub-pixels, the two third sub-pixels are arranged in the same column but different rows, the first sub-pixel and the second sub-pixel are both located on the same side of the two third sub-pixels, and the first sub-pixel and the second sub-pixel are arranged in different columns and different rows; In a first direction, the region boundary of the first region includes opposite first side boundary and second side boundary. At the first side boundary, the two third sub-pixels are located on the side close to the transition region, and the first sub-pixel and the second sub-pixel are located on the side away from the transition region, and the first direction is the row direction of the third light-emitting element; At the first side boundary, one ends of the second conductive lines extending to the intersection line between the transition region and the second region are flush, and a first distance is maintained between the second conductive lines and the third sub-pixel closest to the transition region within the second region; At the second side boundary, each of the second conductive lines extends to a position that is not flush with one end of the boundary line between the transition region and the second region, and maintains a second distance from the first sub-pixel closest to the transition region within the second region, and maintains a third distance from the second sub-pixel closest to the transition region within the second region.

13. The display panel according to claim 12, wherein The first distance, the second distance, and the third distance are all greater than or equal to 2 micrometers.

14. The display panel according to claim 9, wherein The included angle between the first conductive line and the second conductive line is 175 ± 5°.

15. The display panel according to claim 1, wherein The display panel further includes: a plurality of third light-emitting elements and a plurality of third pixel circuits. The third light-emitting elements and the third pixel circuits are located within the second region, and the arrangement density of the third light-emitting elements is greater than or equal to the arrangement density of the plurality of first light-emitting elements within the first region and the plurality of second light-emitting elements within the transition region.

16. The display panel according to claim 9, wherein The first conductive line and the second conductive line are arranged on the same layer and made of the same material, and the light transmittance of the first conductive line and the second conductive line is greater than or equal to 50%.

17. The display panel according to claim 16, wherein The first conductive line is an indium tin oxide line or an indium zinc oxide line; the second conductive line is an indium tin oxide line or an indium zinc oxide line.

18. A display device, characterized in that, Including the display panel according to any one of claims 1 to 17.

19. The display device according to claim 18, wherein, A camera element is provided on the non-display side of the first region.

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