Display panel and display device

Abstract

A display panel (000) and a display device are disclosed. The display panel (000) includes a base (100) and, arranged on the base (100), a plurality of first light-emitting devices (200), a plurality of first pixel driving circuits (300), and a plurality of first signal lines (400). Only the first light-emitting devices (200) are arranged in a light-transmitting region (101a) of the base (100). The first pixel driving circuits (300) electrically connected to the first light-emitting devices (200) are arranged in a non-light-transmitting region (101b). The first signal lines (400) electrically connected to the first pixel driving circuits (300) are arranged outside the light-transmitting region (101a). Therefore, the light transmittance of the light-transmitting region (101a) of the base (100) is high. When the display panel (000) is integrated into the display device, it can be ensured that the screen occupancy rate of the display device is relatively high, and it can be ensured that the use effect of the photosensitive sensor (001) in the display device is good.

Description

[Technical Field]

[0001] This application claims priority from a Chinese patent application filed on May 29, 2020, with application number 202010477260.5 and title "Display Panel and Display Device," the entire contents of which are incorporated herein by reference.

[0002] The present application relates to the field of display technology, and in particular to display panels and display devices. [Background technology]

[0003] Currently, display devices are evolving toward larger and full-screen displays to provide users with a better visual experience. For example, display devices such as mobile phones and tablets require components such as cameras and light sensors, which are usually located in front of the display device (i.e., on the same surface as the display surface), reducing the screen-to-body ratio of the display device. Summary of the Invention [Means for solving the problem]

[0004] This application provides a display panel and a display device, and the technical solution is as follows:

[0005] In one aspect, a base having a first display area including a light-transmitting area and a non-light-transmitting area; a plurality of first light-emitting devices arranged in an array within the light-transmitting region; a plurality of first pixel driving circuits arranged in an array within the non-light-transmitting region, the first pixel driving circuits being electrically connected to the first light-emitting devices; a plurality of first signal lines electrically connected to the first pixel driving circuit and arranged outside the light transmitting region; Including, Regarding the display panel.

[0006] As one option, the extending direction of the first signal lines is parallel to the column direction of the plurality of first pixel driving circuits.

[0007] As an option, the base further includes a second display area disposed around the first display area; further comprising a plurality of second light-emitting devices arranged in an array within the second display area and a second pixel driving circuit electrically connected to the second light-emitting devices; Here, the arrangement density of the plurality of second light emitting devices is greater than the arrangement density of the plurality of first light emitting devices.

[0008] As one option, the first signal line includes a first connection portion and a second connection portion connected to each other, the first connection portion being disposed in the non-light-transmitting region and electrically connected to one row of the first pixel driving circuits, and the second connection portion being disposed in the second display region and electrically connected to one row of the second pixel driving circuits.

[0009] As an option, the display panel further includes a plurality of second signal lines disposed on the base, the second signal lines electrically connected to the second pixel driving circuit and disconnected from the first pixel driving circuit; Here, the first signal line is disconnected from the second pixel driving circuit, the plurality of first signal lines are configured to be connected to a first driving chip, and the plurality of second signal lines are configured to be connected to a second driving chip.

[0010] As one option, the base further includes a binding region for connecting the first driver chip and the second driver chip, the binding region being disposed outside the second display region and away from a side of the second display region where the first display region is provided; The first signal line includes a first connection portion and a second connection portion connected to each other, the first connection portion being disposed in the non-light-transmitting region and connected to one column of the first pixel driving circuit, and the second connection portion being disposed in the second display region and disconnected from the second pixel driving circuit.

[0011] As an option, the second signal lines are all arranged within the second display area.

[0012] As one option, the second signal line includes a third connection portion and a fourth connection portion, the third connection portion being disposed in the second display area and electrically connected to a column of the second pixel driving circuit, and the fourth connection portion being disposed in the non-light-transmitting area and disconnected from the first pixel driving circuit.

[0013] As one option, the third connecting portion and the fourth connecting portion are cut at the boundary between the second display area and the non-light-transmitting area.

[0014] As one option, the display panel further includes a plurality of third signal lines arranged on the base, the third signal lines are all arranged within the second display area, and the third signal lines are electrically connected to one column of the second pixel driving circuit.

[0015] As one option, the base further includes a binding region for connecting the first driving chip and the second driving chip, the binding region being disposed outside the second display region and close to a side of the second display region where the first display region is provided; The second signal line includes a third connection portion and a fourth connection portion connected to each other, the third connection portion being disposed in the second display area and connected to one column of the second pixel driving circuit, and the fourth connection portion being disposed in the non-light-transmitting area and disconnected from the first pixel driving circuit.

[0016] As one option, the first signal lines are all disposed within the non-light-transmitting region.

[0017] As one option, the first signal line includes a first connection portion and a second connection portion, the first connection portion being disposed in the non-light-transmitting region and electrically connected to a column of the first pixel driving circuit, and the second connection portion being disposed in the second display region and disconnected from the second pixel driving circuit.

[0018] As one option, the first connecting portion and the second connecting portion are cut at the boundary between the second display area and the non-light-transmitting area.

[0019] As one option, the display panel further includes a plurality of third signal lines and a plurality of fourth signal lines arranged on the base, the plurality of third signal lines are all arranged in the second display area, the third signal lines are electrically connected to one column of the second pixel driving circuits, some of the fourth signal lines are arranged in the second display area and other parts are arranged in the light-transmitting area, and the fourth signal lines are electrically connected to one column of the second pixel driving circuits.

[0020] As one option, the display panel further includes a connecting wire disposed on the base, one end of the connecting wire being electrically connected to the first light-emitting device and the other end being electrically connected to the first pixel driving circuit.

[0021] As an option, the portion of the connecting line located within the light-transmitting region is made of a transparent conductive material.

[0022] As one option, the display panel further includes a plurality of third light-emitting devices arranged in an array within the non-light-transmitting region, and a third pixel driving circuit electrically connected to the third light-emitting devices, wherein the plurality of third pixel driving circuits and the plurality of first pixel driving circuits are arranged alternately.

[0023] As one option, the arrangement density of the plurality of third light emitting devices is equal to the arrangement density of the plurality of first light emitting devices.

[0024] In another aspect, the present invention relates to a display device including a photosensitive sensor and the display panel described above, wherein an orthogonal projection of a light-receiving surface of the photosensitive sensor onto the base is within the light-transmitting region. [Brief explanation of the drawings]

[0025] [Figure 1] FIG. 1 is a plan view of a display panel according to an embodiment of the present application. [Figure 2] FIG. 2 is a schematic diagram of a pixel array of the display panel shown in FIG. [Figure 3] FIG. 10 is a plan view of another display panel according to an embodiment of the present application. [Figure 4] 1 is a schematic diagram of a pixel array of a display panel according to an embodiment of the present application; [Figure 5] FIG. 10 is a schematic diagram of a pixel array of another display panel according to an embodiment of the present application. [Figure 6] FIG. 10 is a schematic diagram of a pixel array of yet another display panel according to an embodiment of the present application. [Figure 7] FIG. 2 is a schematic diagram of a pixel array of a display panel according to another embodiment of the present application. [Figure 8] FIG. 10 is a schematic diagram of a pixel array of another display panel according to another embodiment of the present application. [Figure 9] 1 is a structural schematic diagram of a display device according to an embodiment of the present application; [Figure 10] 10 is a cross-sectional view taken along line AA' of the display device shown in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0026] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be described in more detail below with reference to specific embodiments and drawings.

[0027] Unless otherwise defined, technical or scientific terms used in one or more embodiments of the present application should have the ordinary meaning understood by a person of ordinary skill in the art to which the present disclosure belongs. The terms "first," "second," and similar terms used in one or more embodiments of the present application do not denote any order, quantity, or importance, but are merely used to distinguish between different components. Similar terms, such as "comprise" or "contain," mean that the element or object appearing before the term covers the elements or objects listed thereafter and their equivalents, without excluding other elements or objects. Similar terms, such as "connected" or "connected," are not limited to physical or mechanical connections, but can also include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" only denote relative positional relationships; if the absolute positions of the described objects are changed, the relative positional relationships may also be changed accordingly.

[0028] Currently, in order to improve the screen occupancy rate of a display device, the display panel of the display device can be designed as a display panel that locally transmits light. For example, the display panel includes a normal display portion and a light-transmitting display portion. By providing pixels in both the normal display portion and the light-transmitting display portion, an image is displayed in both the normal display portion and the light-transmitting display portion.

[0029] A photosensitive sensor (e.g., an image sensor in a camera, an infrared sensor, or a distance sensor) in a display device is disposed on the side opposite the display surface of the display panel, and the orthogonal projection of the photosensitive surface of the photosensitive sensor onto the display panel is within the light-transmitting display portion. The pixel density (abbreviated as PPI) of the display portion is usually higher than that of the light-transmitting display portion so that ambient light can penetrate the light-transmitting display portion and reach the light-receiving surface of the photosensitive sensor. In this way, if a relatively high screen-to-body ratio of the display device can be ensured, the photosensitive sensor can be guaranteed to operate normally.

[0030] However, in current display panels, signal lines (e.g., data lines) and pixel driving circuits must usually be arranged in the light-transmitting display portion. However, since the signal lines and pixel driving circuits are usually not transparent to light, the light-transmitting display portion has low light transmittance against ambient light, resulting in poor use of the photosensitive sensor. For example, if the photosensitive sensor is an image sensor in a camera, the light-transmitting display portion with low light transmittance will degrade the quality of the image captured by the camera.

[0031] FIG. 1 is a plan view of a display panel according to an embodiment of the present application, and FIG. 2 is a schematic diagram of a pixel array of the display panel shown in FIG.

[0032] The display panel may include a base 100, a plurality of first light-emitting devices 200 (block E shown in FIG. 2 represents one first light-emitting device) arranged on the base 100, a plurality of first pixel driving circuits 300 (block D shown in FIG. 2 represents one first pixel driving circuit), and a plurality of first signal lines 400.

[0033] The base 100 has a first display area 101, which includes a light-transmitting area 101a and a non-light-transmitting area 101b. FIG. 1 schematically illustrates an example in which the non-light-transmitting area 101b is a ring-shaped area and is arranged to surround the light-transmitting area 101a. In another alternative embodiment, as shown in FIG. 3, which is a plan view of another display panel according to an embodiment of the present application, the non-light-transmitting area 101b may be arranged on one side of the light-transmitting area 101a.

[0034] In the embodiment of the present application, the plurality of first light-emitting devices 200 may be arranged in an array, and all of the plurality of first light-emitting devices 200 are disposed in the light-transmitting region 101a. The plurality of first pixel driving circuits 300 may also be arranged in an array, and all of the plurality of first pixel driving circuits 300 are disposed in the non-light-transmitting region 101b.

[0035] The number of first pixel driving circuits 300 in the non-light-transmitting region 101b is equal to or greater than the number of first light-emitting devices 200 in the light-transmitting region 101a. Each first light-emitting device 200 may be electrically connected to one first pixel driving circuit 300. In this way, each first pixel driving circuit 300 can drive one first light-emitting device 200 to emit light.

[0036] The plurality of first signal lines 400 may all be arranged outside the light-transmitting region 101a, and the first signal lines 400 may be electrically connected to the first pixel driving circuits 300. For example, one first signal line 400 may be electrically connected to one row of the first pixel driving circuits 300.

[0037] In the embodiments of the present application, the first signal line 400 may be a data line, and various signal lines (e.g., the second signal line, the third signal line, and the fourth signal line) shown in the following embodiments will all be described using the data line as an example. The first signal line 400 can supply a driving signal to the first light-emitting device 200 via the first pixel driving circuit 300, thereby causing the first light-emitting device 200 to emit light.

[0038] In the embodiment of the present application, the first light-emitting device 200 may be an organic light-emitting diode (OLED) light-emitting device. It may include an anode, a light-emitting layer, and a cathode stacked along a direction perpendicular to and away from the base 10. Here, the anode of the first light-emitting device 200 may be electrically connected to a first pixel driving circuit. Both the anode and the cathode may be made of a light-transmitting conductive material, for example, the light-transmitting conductive material may be indium tin oxide (ITO). In this way, the first light-emitting device 200 disposed in the light-transmitting region 101a has high light transmittance, resulting in a high light transmittance of the light-transmitting region 101a.

[0039] 2, the display panel may further include a plurality of connecting wires 500 arranged on the base 100. One end of each connecting wire 500 is electrically connected to one first light-emitting device 200 arranged in the light-transmitting region 101a, and the other end is electrically connected to one first pixel driving circuit 300 arranged in the non-light-transmitting region 101b. In this way, each first light-emitting device 200 can be electrically connected to one first pixel driving circuit 300 via one connecting wire.

[0040] For example, the portion of each connection wiring 500 disposed in the light-transmitting region 101a may be made of a transparent conductive material. In this way, the light transmittance of the light-transmitting region 101a can be further improved. In order to simplify the manufacturing process of the connection wiring 500, the entire connection wiring 500 may be made of a transparent conductive material. Here, the transparent conductive material may be ITO.

[0041] 2 only shows a connection configuration in which one column of the first light-emitting devices 200 among the plurality of first light-emitting devices 200 is electrically connected to one column of the first pixel driving circuits 300 among the plurality of first pixel driving circuits 300. The connection configurations between the other first light-emitting devices and the other first pixel driving circuits are similar to this connection configuration.

[0042] As described above, a display panel according to an embodiment of the present application includes a base and a plurality of first light-emitting devices, a plurality of first pixel driving circuits, and a plurality of first signal lines arranged on the base. Only the first light-emitting devices are arranged in the light-transmitting region of the base, the first pixel driving circuits electrically connected to the first light-emitting devices are arranged in the non-light-transmitting region, and the first signal lines electrically connected to the first pixel driving circuits are arranged outside the light-transmitting region. Therefore, the light-transmitting region of the base has high light transmittance. When the display panel is integrated into a display device, a relatively high screen occupancy rate of the display device can be ensured, thereby ensuring good use of the photosensitive sensor in the display device. For example, if the photosensitive sensor is an image sensor in a camera, the high light transmittance of the light-transmitting region allows ambient light to pass through the light-transmitting region and enter the camera, allowing the camera to capture high-quality images.

[0043] 2, each first light-emitting device 200 and a first pixel driving circuit 300 connected thereto may constitute one first pixel unit. The base 100 further includes a second display area 102 arranged around the first display area 101. The display panel further includes a plurality of second pixel units 600 arranged in an array in the second display area 102 (block P1 shown in FIG. 2 represents one second pixel unit), and a plurality of third pixel units 700 arranged in an array in the non-light-transmitting area 101b (block P2 shown in FIG. 2 represents one third pixel unit).

[0044] Here, each second pixel unit 600 may include a second light-emitting device and a second pixel driving circuit electrically connected to the second light-emitting device, which is used to drive the second light-emitting device to emit light. Each third pixel unit 700 may include a third light-emitting device and a third pixel driving circuit electrically connected to the third light-emitting device, which is used to drive the third light-emitting device to emit light. In an embodiment of the present application, the second light-emitting device and the third light-emitting device may both be OLED light-emitting devices.

[0045] In the present application, in the non-light-transmitting region 101b of the first display region 101, the plurality of third pixel driving circuits may be arranged alternately with the plurality of first pixel driving circuits 300. That is, one first pixel driving circuit 300 is provided between two adjacent third pixel units 700, and one third pixel unit 700 is provided between two adjacent first pixel driving circuits 300.

[0046] In the first display area 101, the arrangement density of the third light emitting devices may be equal to the arrangement density of the first light emitting devices 200, and of course, the arrangement density of the third light emitting devices is equal to the arrangement density of the first light emitting devices 200. The arrangement density of the second light emitting devices in the second display area 102 is greater than the arrangement density of the third light emitting devices in the first display area 101. That is, the PPI of the second display area 102 is higher than that of the first display area 101, ensuring good display effect in the second display area 102.

[0047] 2 , each first light-emitting device 200 includes two sub-light-emitting devices, and correspondingly, each first pixel driving circuit 300 includes two corresponding sub-pixel driving circuits, and each first signal line 400 includes two corresponding sub-connecting wires. In this manner, the sub-pixel driving circuits in one column can be electrically connected to one corresponding sub-connecting wire, and each sub-light-emitting device in each first light-emitting device 200 can be electrically connected to its corresponding sub-pixel driving circuit via one connecting wire 500. Here, the two sub-light-emitting devices in each first light-emitting device 200 may be sub-light-emitting devices of two different colors. For example, the two sub-light-emitting devices of different colors may be a red sub-light-emitting device and a green sub-light-emitting device, a red sub-light-emitting device and a blue sub-light-emitting device, or a green sub-light-emitting device and a blue sub-light-emitting device, respectively.

[0048] For ease of understanding, the following embodiments will be briefly described by taking as an example that each first light-emitting device 200 is one sub-light-emitting device, each first pixel driving circuit 300 is one sub-pixel driving circuit, and each first light-emitting device 200 is electrically connected to one first pixel driving circuit 300 via one connecting wiring 500.

[0049] In the embodiments of the present application, the wiring direction of the first signal line 400 may vary, but the embodiments of the present application will be briefly described by taking the following two selectable embodiments as examples.

[0050] In a first alternative embodiment, as shown in Figure 4, which is a schematic diagram of a pixel array of a display panel according to an embodiment of the present application, a first signal line 400 may include a first connection portion 400a, a jumper portion 400b, a winding portion 400c, and a second connection portion 400d connected in sequence. Here, the first connection portion 400a is disposed in the non-light-transmitting region 101b and is electrically connected to a first column of the first pixel driving circuit 300, the second connection portion 400d is disposed in the second display region 102 and is electrically connected to a second pixel driving circuit in a second column of the second pixel unit 600, one end of the winding portion 400c is connected to the second connection portion 400d, the winding portion 400c is disposed outside the light-transmitting region 101b and extends along the outer boundary of the light-transmitting region 101b, one end of the jumper portion 400b is connected to the winding portion 400c and the other end is connected to the first connection portion 400a. In this way, the driving signal loaded on the first signal line 400 not only drives the first light-emitting device 200 to emit light via the first pixel driving circuit 300, but also drives the second light-emitting device 200 to emit light via the second pixel driving circuit in the second pixel unit 600.

[0051] Note that the end of the first connection portion 400a that is remote from the jumper portion 400b needs to be disconnected from the signal line arranged in the second display area 102.

[0052] In a second alternative embodiment, as shown in FIG. 5, FIG. 5 is a schematic diagram of a pixel arrangement of another display panel according to an embodiment of the present application. A plurality of first pixel driving circuits 300 are arranged in a plurality of columns, and the column direction of the plurality of first pixel driving circuits 300 is the Y direction. The extension direction of the first signal line 400 is parallel to the column direction of the plurality of first pixel units 200, that is, the extension direction of the first signal line 400 is parallel to the Y direction. Note that the drawings in the present application are generally described using the example of a regular rectangular region as an example. If the first display region 101 has an irregular shape (e.g., a circular or triangular shape), the arrangement of the first pixel driving circuits 300 arranged in the first display region 101 is also irregular, but can be arranged in a plurality of columns perpendicular to the Y direction, and the first pixel driving circuits 300 in each column can be connected to one first signal line 400.

[0053] In this case, the first signal line 400 may include a first connection portion 401 and a second connection portion 402 connected to each other. Here, the first connection portion 401 may be disposed in the non-light-transmitting region 101b and electrically connected to a first pixel driving circuit 300 in a column, and the second connection portion 402 may be disposed in the second display region 102 and electrically connected to a second pixel driving circuit in a second pixel unit 600 in a column. In this way, the driving signal loaded on the first signal line 400 can not only drive the first light-emitting device 200 to emit light via the first pixel driving circuit 300, but also drive the second light-emitting device 200 to emit light via the second pixel driving circuit in the second pixel unit 600.

[0054] Note that signal lines other than the first signal line 400 arranged in the second display region 102 do not extend into the first display region 101.

[0055] In the first alternative embodiment, the number of first signal lines 400 is large, and the winding portions 400c of the first signal lines 400 occupy a certain space. Therefore, the arrangement of the first signal lines 400 with the winding portions 400c affects the arrangement density of the third pixel units 700 arranged in the non-light-transmitting region 101b, and limits the aperture ratio of the display panel.

[0056] In a second alternative embodiment, the first signal line 400 does not have a winding portion, its extension direction is parallel to the column direction (i.e., direction Y) of the plurality of first pixel driving circuits 300, and each first signal line 400 only needs to be arranged within an area where one column of the first pixel driving circuits 300 is located. The parallel arrangement affects the arrangement density of the third pixel units 700 arranged in the non-light-transmitting area 101b, and increases the aperture ratio of the display panel.

[0057] Therefore, the second alternative embodiment has better effects than the first alternative embodiment, and the following examples will be briefly described using the first signal line 400 and the direction Y as an example. Note that in the above two alternative embodiments, the first signal line 400 will be described as driving the first light-emitting device 200 and the second light-emitting device simultaneously. The following examples will be described using the first light-emitting device and the second light-emitting device driven by different signal lines as an example.

[0058] As shown in Figure 6, Figure 6 is a schematic diagram of a pixel array of yet another display panel according to an embodiment of the present application. The display panel may further include a plurality of second signal lines 800 arranged on the base 100. Here, the second signal lines 800 are electrically connected to the second pixel driving circuits in the second pixel units 600 and disconnected from the first pixel driving circuits 300. The first signal lines 400 are electrically connected to the first pixel driving circuits 300 and disconnected from the second pixel driving circuits.

[0059] In the embodiment of the present application, the plurality of first signal lines 400 are configured to be connected to a first driving chip, and the plurality of second signal lines 800 are configured to be connected to a second driving chip, so that under the control of the first driving chip, the first signal lines 400 can drive the first light-emitting device to emit light via the first pixel driving circuit 300, and under the control of the second driving chip, the second signal lines 800 can drive the second light-emitting device to emit light via the second pixel driving circuit.

[0060] Optionally, the display panel may further include a plurality of fifth signal lines 900 disposed on the base 100. Here, the fifth signal lines 900 are electrically connected to the third pixel driving circuit in the third pixel unit 700 and can be disconnected from the second pixel driving circuit. The plurality of fifth signal lines 900 are configured to be connected to the first driving chip. In this way, under the control of the first driving chip, the fifth signal lines can drive the third light-emitting devices to emit light via the third pixel driving units.

[0061] In this way, the first driving chip can control only the pixel units arranged in the first display area 101, and the second driving chip can control only the pixel units arranged in the second display area 102. That is, the first display area 101 with a low PPI and the second display area 102 with a high PPI need to be controlled by different driving chips. This ensures that the luminance of the screen displayed in the first display area 101 with a low PPI is high and that the uniformity of the display panel is good.

[0062] In the embodiment of the present application, the base 100 further includes a binding area (not shown in FIG. 6) disposed outside the second display area 102, which is used to connect the first and second driving chips. If the binding area is located on a different side of the second display area 102, the signal line arrangement on the display panel will also be different. In the embodiment of the present application, the following two exemplary embodiments will be taken as examples.

[0063] 7 is a schematic diagram of a pixel arrangement of a display panel according to another embodiment of the present application. The binding region 103 of the base 100 is disposed in the second display region 102 away from the side where the first display region 101 is provided. In this case, the first signal line 400 includes a first connection portion 401 and a second connection portion 402 connected to each other. Here, the first connection portion 401 is disposed in the non-light-transmitting region 101b and can be electrically connected to a first pixel driving circuit 300 of one column, and the second connection portion 402 is disposed in the second display region 102 and can be disconnected from the second pixel driving circuit in the second pixel unit 600.

[0064] For example, the first pixel driving circuit 300 and the second pixel driving circuit are provided on the same layer, and an insulating layer is present between the first pixel driving circuit 300 and the first signal line 400. A via hole is formed in the insulating layer between the first connection portion 401 of the first signal line 400 and the first pixel driving circuit 300, so that the first connection portion 401 can be electrically connected to the first pixel driving circuit through the via hole. A via hole is not formed in the insulating layer between the second connection portion 402 of the first signal line 400 and the second pixel driving circuit, so that the second connection portion 402 can be disconnected from the second pixel driving circuit by the insulating layer. In this way, a driving signal provided by the first driving chip can be transmitted to the first connection portion 401 via the second connection portion 402, so that the first connection portion 401 can drive the first light-emitting device 200 to emit light via the first pixel driving circuit 300.

[0065] The structure of the fifth signal line 900 may be the same as the structure of the first drive signal line 300, and the structure of the fifth signal line 900 will not be described here.

[0066] In the present application, the structure of the second signal line 800 can be various, and in the embodiments of the present application, the following two cases will be taken as examples to provide a general description.

[0067] In the first case, the second signal lines 800 are all disposed within the second display region 102. That is, the second signal lines 800 do not extend into the first display region 101.

[0068] In the second case, the second signal line 800 includes a third connection portion 801 and a fourth connection portion 802. Here, the third connection portion 801 is disposed in the second display area 102 and is electrically connected to the second pixel driving circuit in one column of the second pixel units 600, and the fourth connection portion 802 is disposed in the non-light-transmitting area 101b and is electrically connected to the first pixel driving circuit. Note that the specific structure and principle of the second signal line 800 being electrically connected to the second pixel driving circuit and disconnected from the first pixel driving circuit 300 can be referred to the description of the first signal line 400. This description is omitted in the embodiments of this application.

[0069] In the embodiment of the present application, the third connection portion 801 of the second signal line 800 may be electrically connected to or disconnected from the fourth connection portion 802. For example, as shown in Fig. 7, when the third connection portion 801 is disconnected from the fourth connection portion 802, the third connection portion 801 and the fourth connection portion 802 may be cut at the boundary between the second display area 102 and the non-light-transmitting area 101b. In this way, the driving signal applied to the second signal line 800 by the second driving chip is not loaded onto the fourth connection portion 802, thereby avoiding the problem of interference with the non-light-transmitting area 101b and improving the display effect of the first display area 101.

[0070] Optionally, the display panel may further include a plurality of third signal lines 1000 arranged on the base 100, the third signal lines 1000 are all arranged in the second display area 102, and the third signal lines 1000 are electrically connected to second pixel driving circuits in a column of second pixel units 600. Here, the plurality of third signal lines 1000 are configured to be connected to a second driving chip. In this way, under the control of the second driving chip, the third signal lines 1000 can drive the second light-emitting devices to emit light via the second pixel driving circuit.

[0071] 8 is a schematic diagram of a pixel arrangement of another display panel according to another embodiment of the present application. The binding region 103 of the base 100 is disposed in the second display region 102, closer to the side where the first display region 101 is disposed. In this case, the second signal line 800 includes a third connection portion 801 and a fourth connection portion 802, which are connected to each other. Here, the third connection portion 801 is disposed in the second display region 102 and is electrically connected to the second pixel driving circuit in one column of the second pixel units 600, and the fourth connection portion 802 is disposed in the non-light-transmitting region 101b and is disconnected from the first pixel driving circuit 300.

[0072] For example, the first pixel driving circuit 300 and the second pixel driving circuit are provided on the same layer, and an insulating layer is present between the first pixel driving circuit 300 and the second signal line 800. A via hole is formed in the insulating layer between the third connection portion 801 of the second signal line 800 and the second pixel driving circuit, so that the third connection portion 801 can be electrically connected to the second pixel driving circuit through the via hole. Meanwhile, a via hole is not formed in the insulating layer between the fourth connection portion 802 of the second signal line 800 and the first pixel driving circuit, so that the fourth connection portion 802 can be disconnected from the first pixel driving circuit 300 by the insulating layer. In this way, a driving signal provided by the second driving chip can be transmitted to the third connection portion 801 via the fourth connection portion 802, so that the third connection portion 801 can drive the second light-emitting device to emit light via the second pixel driving circuit.

[0073] Optionally, the display panel may further include a plurality of third signal lines (not shown in FIG. 8 ) and a plurality of fourth signal lines 1100 arranged on the base 100. The third signal lines 1000 are all arranged in the second display area 102, and the third signal lines are electrically connected to the second pixel driving circuits of the second pixel units 600 in a column. A portion of the fourth signal line 1100 is arranged in the second display area 102, and another portion is arranged in the light-transmitting area 101a, and the fourth signal line 1100 is electrically connected to the second pixel driving circuits of the second pixel units 600 in a column. Here, the plurality of third signal lines and the plurality of fourth signal lines 1100 are configured to be connected to a second driving chip. In this way, under the control of the second driving chip, the third signal lines and the fourth signal lines 1100 drive the second light-emitting devices to emit light via the second pixel driving circuit.

[0074] In such a case, the fourth signal line 1100 needs to extend across the light-transmitting region 101a into the second display region 102. Therefore, in order to improve the light transmittance of the light-transmitting region 101a, the portion of the fourth signal line 1100 disposed within the light-transmitting region 101a can be made of a transparent conductive material.

[0075] In the present application, the structure of the first signal line 800 can be various, and in the embodiments of the present application, the following two cases will be taken as examples to provide a general description.

[0076] In the first case, the first signal lines 800 are all disposed within the non-light-transmitting region 101b, that is, the first signal lines 400 do not extend into the second display region 102.

[0077] In the second case, the first signal line 400 includes a first connection portion 401 and a second connection portion 402. Here, the first connection portion 401 is disposed in the non-light-transmitting region 101b and can be electrically connected to a first pixel driving circuit 300 in one column, and the second connection portion 402 is disposed in the second display region 102 and can be disconnected from a second pixel driving circuit in the second pixel unit 600. Note that the specific structure and principle of the first signal line 400 being electrically connected to the first pixel driving circuit 300 and disconnected from the second pixel driving circuit can be referenced to the description of the second signal line 800; this description is omitted in the embodiments of this application.

[0078] In the embodiment of the present application, the first connection portion 401 of the first signal line 400 may be electrically connected to or disconnected from the second connection portion 402. For example, as shown in Fig. 8, when the first connection portion 401 is disconnected from the second connection portion 402, the first connection portion 401 and the second connection portion 402 may be cut at the boundary between the second display area 102 and the non-light-transmitting area 101b. In this way, the driving signal applied to the first signal line 400 by the first driving chip is not loaded onto the second connection portion 402, thereby avoiding the problem of interference with the second display area 102 and improving the display effect of the second display area 102.

[0079] The structure of the fifth signal line 900 may be the same as the structure of the first drive signal line 300, and the structure of the fifth signal line 900 will not be described here.

[0080] For ease of understanding, the drawings in this application only depict the connection between one signal line and one column of pixel units, and it will be clear to those skilled in the art that the connection relationships between other pixel units and signal lines can all be referenced to the connection patterns depicted in the drawings.

[0081] As described above, a display panel according to an embodiment of the present application includes a base and a plurality of first light-emitting devices, a plurality of first pixel driving circuits, and a plurality of first signal lines arranged on the base. Only the first light-emitting devices are arranged in the light-transmitting region of the base, the first pixel driving circuits electrically connected to the first light-emitting devices are arranged in the non-light-transmitting region, and the first signal lines electrically connected to the first pixel driving circuits are arranged outside the light-transmitting region. Therefore, the light-transmitting region of the base has high light transmittance. When the display panel is integrated into a display device, a relatively high screen occupancy rate of the display device can be ensured, thereby ensuring good use of the photosensitive sensor in the display device. For example, if the photosensitive sensor is an image sensor in a camera, the high light transmittance of the light-transmitting region allows ambient light to pass through the light-transmitting region and enter the camera, allowing the camera to capture high-quality images.

[0082] An embodiment of the present application further provides a display device, which may be any product or component with a display function, such as a mobile phone, a tablet, a television, a display, a laptop, a digital photo frame, or a navigation system.

[0083] 9 and 10, Fig. 9 is a structural schematic diagram of a display device according to an embodiment of the present application, and Fig. 10 is a cross-sectional view of the display device shown in Fig. 9 along line A-A'. The display device may include a display panel 000, and the structure of the display panel 000 may be the display panel in the above embodiments, for example, the display panel may be the display panel shown in Fig. 1, 4, 5, 6, 7 or 8.

[0084] The display device may include a first display area 101 and a second display area 102. The first display area 101 includes a light-transmitting area 101a and a non-light-transmitting area 101b. The light-transmitting area 101a may have a circular, elliptical, or two elliptical shapes arranged side by side, and the embodiments of the present application are not limited thereto.

[0085] In an embodiment of the present application, the display device may further include a photosensitive sensor 001. The photosensitive sensor 001 may be an image sensor in a camera, a light sensor, or a distance sensor. The photosensitive sensor 001 is disposed on the side facing the display surface of the display panel 000. Here, the orthogonal projection of the photosensitive surface 001a of the photosensitive sensor 001 onto the display panel is within the light-transmitting region 101a of the first display region 101.

[0086] It should be noted that in the drawings, the sizes of layers and regions may be exaggerated for clarity. When an element or layer is referred to as being "on" another element or layer, it is understood that it may be directly on top of the other element, or that intermediate layers may be present. When an element or layer is referred to as being "under" another element or layer, it is understood that it may be directly under the other element, or that one or more intermediate layers or elements may be present. When a layer or element is referred to as being "between" two layers or elements, it is understood that it may be the only layer between the two layers or elements, or that one or more intermediate layers or elements may also be present. Similar reference numbers refer to similar elements throughout this specification.

[0087] The above are merely optional examples of the present application and do not limit the present application, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of the present application.

Claims

1. a base having a first display area including a light-transmitting area and a non-light-transmitting area; a plurality of first light-emitting devices arranged in an array within the light-transmitting region; a plurality of first pixel driving circuits arranged in an array within the non-light-transmitting region, the first pixel driving circuits being electrically connected to the first light-emitting devices; a plurality of first signal lines electrically connected to the first pixel driving circuit and arranged outside the light transmitting region; a plurality of second light-emitting devices arranged in an array within the second display area; a second pixel drive circuit electrically connected to the second light emitting device; a plurality of second signal lines disposed on the base; Including, the base further includes the second display area disposed around the first display area; wherein the arrangement density of the plurality of second light-emitting devices is greater than the arrangement density of the plurality of first light-emitting devices; the second signal line is electrically connected to the second pixel driving circuit and disconnected from the first pixel driving circuit; wherein the first signal line is disconnected from the second pixel driving circuit, the plurality of first signal lines are configured to be connected to a first driving chip, and the plurality of second signal lines are configured to be connected to a second driving chip. Display panel.

2. The display panel according to claim 1 , wherein the first signal lines extend in a direction parallel to a column direction of the first pixel driving circuits.

3. the base further includes a binding region for connecting the first driving chip and the second driving chip, the binding region being disposed outside the second display region and spaced apart from a side of the second display region on which the first display region is provided; the first signal line includes a first connection portion and a second connection portion connected to each other, the first connection portion being disposed in the non-light-transmitting region and connected to a column of the first pixel driving circuit, and the second connection portion being disposed in the second display region and disconnected from the second pixel driving circuit; The display panel according to claim 1 .

4. The display panel according to claim 3 , wherein the second signal lines are all arranged within the second display area.

5. 4. The display panel of claim 3, wherein the second signal line includes a third connection portion and a fourth connection portion, the third connection portion being disposed in the second display area and electrically connected to one column of the second pixel driving circuit, and the fourth connection portion being disposed in the non-light-transmitting area and disconnected from the first pixel driving circuit.

6. The display panel according to claim 5 , wherein the third connecting portion and the fourth connecting portion are cut off at a boundary between the second display region and the non-light-transmitting region.

7. 4. The display panel of claim 3, further comprising a plurality of third signal lines arranged on the base, the third signal lines being all arranged in the second display area, the third signal lines being electrically connected to one column of the second pixel driving circuits, and the third signal lines being configured to be connected to the second driving chip.

8. the base further includes a binding region for connecting the first driving chip and the second driving chip, the binding region being disposed outside the second display region and close to a side of the second display region where the first display region is provided; the second signal line includes a third connection portion and a fourth connection portion connected to each other, the third connection portion being disposed in the second display area and connected to a column of the second pixel driving circuit, and the fourth connection portion being disposed in the non-light-transmitting area and disconnected from the first pixel driving circuit; The display panel according to claim 1 .

9. The display panel according to claim 8 , wherein the first signal lines are all disposed within the non-light-transmitting region.

10. 9. The display panel of claim 8, wherein the first signal line includes a first connection portion and a second connection portion, the first connection portion being disposed in the non-light-transmitting region and electrically connected to a column of the first pixel driving circuit, and the second connection portion being disposed in the second display region and disconnected from the second pixel driving circuit.

11. The display panel according to claim 10 , wherein the first connecting portion and the second connecting portion are separated at a boundary between the second display area and the non-light-transmitting area.

12. 9. The display panel of claim 8, further comprising a plurality of fourth signal lines arranged on the base, some of the fourth signal lines being arranged in the second display area and other parts being arranged in the light-transmitting area, the fourth signal lines being electrically connected to one column of the second pixel driving circuits, and the fourth signal lines being configured to be connected to the second driving chip.

13. 13. The display panel of claim 1, further comprising a connecting wiring arranged on the base, one end of the connecting wiring being electrically connected to the first light-emitting device and the other end being electrically connected to the first pixel driving circuit.

14. The display panel according to claim 13 , wherein the portion of the connection wiring arranged in the light-transmitting region is made of a transparent conductive material.

15. 13. The display panel of claim 1, further comprising: a plurality of third light-emitting devices arranged in an array within the non-light-transmitting region; and a third pixel driving circuit electrically connected to the third light-emitting devices, wherein the plurality of third pixel driving circuits and the plurality of first pixel driving circuits are arranged alternately.

16. The display panel of claim 15 , wherein the arrangement density of the third light-emitting devices is equal to the arrangement density of the first light-emitting devices.

17. A display device comprising: a photosensitive sensor; and the display panel according to any one of claims 1 to 16, wherein an orthogonal projection of a light-receiving surface of the photosensitive sensor onto the base is within the light-transmitting region.

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