Display panel and display device

Abstract

This application provides a display panel and a display device. The display panel defines a main display area and a secondary display area. The display panel includes: pixel units arrayed in the secondary display area and the main display area; each pixel unit includes a first color sub-pixel and a second color sub-pixel; a first power line electrically connected to the first color sub-pixel; a second power line electrically connected to the second color sub-pixel; a first power terminal electrically connected to the first power line; and a second power terminal electrically connected to the second power line. This application can improve or even eliminate the display difference between the secondary display area and the main display area.

Description

Technical Field

[0001] This application belongs to the field of display technology, and in particular relates to a display panel and a display device. Background Technology

[0002] To meet user needs, display panels typically include a main display area (or main screen) and a secondary display area (or secondary screen). The main screen can also be called the normal display area, and the secondary screen can also be called the function area. The function area can realize functions such as under-display camera or under-display touch. Meanwhile, to achieve a higher screen-to-body ratio, the application of full-screen displays is becoming increasingly widespread. A full-screen display means that the function area not only realizes functions such as under-display camera or under-display touch, but also displays the image.

[0003] However, the inventors of this application discovered that when the main display area and the secondary display area display images simultaneously, there is a display difference between the main display area and the secondary display area, resulting in a poor display effect of the display panel. Summary of the Invention

[0004] This application provides a display panel and a display device that can improve or even eliminate the display difference between the main display area and the sub-display area, thereby enhancing the display effect of the display panel.

[0005] In a first aspect, embodiments of this application provide a display panel, which defines a main display area and a secondary display area. The display panel includes: pixel units arrayed in the secondary display area and the main display area, the pixel units including a first color sub-pixel and a second color sub-pixel; a first power line electrically connected to the first color sub-pixel; a second power line electrically connected to the second color sub-pixel; a first power terminal electrically connected to the first power line; and a second power terminal electrically connected to the second power line.

[0006] According to an embodiment of the first aspect of this application, the pixel unit further includes a third color sub-pixel, which is electrically connected to the first power terminal or the second power terminal via a third power line.

[0007] According to any of the foregoing embodiments of the first aspect of this application, the first color sub-pixel includes a green sub-pixel, and one of the second color sub-pixel and the third color sub-pixel is a red sub-pixel and the other is a blue sub-pixel.

[0008] In this way, since the green sub-pixel is powered independently via the first power line connected to the first power terminal, the current on the first power line connected to the green sub-pixel does not change when the display panel switches from displaying a white image to displaying a solid green image. Therefore, there is no voltage drop or the voltage drop is the same on both the secondary and primary screens, eliminating the display difference between the secondary and primary screens when displaying a solid green image. Furthermore, since the second power terminal only powers the red and blue sub-pixels, and no longer simultaneously powers all three, the change in current on the power lines connected to the red and blue sub-pixels decreases when the display panel switches from displaying a white image to displaying a solid red or blue image. This reduces the voltage drop difference between the secondary and primary screens, improving the display difference between the secondary and primary screens when displaying a solid red or blue image.

[0009] According to any of the foregoing embodiments of the first aspect of this application, the first color sub-pixel includes a blue sub-pixel, and one of the second color sub-pixel and the third color sub-pixel is a red sub-pixel and the other is a green sub-pixel.

[0010] In this way, since the blue sub-pixel is powered independently via the first power line connected to the first power terminal, the current on the first power line connected to the blue sub-pixel remains unchanged when the display panel switches from displaying a white image to displaying a solid blue image. Therefore, there is no voltage drop or the voltage drop is the same on both the secondary and primary screens, eliminating the display difference between the secondary and primary screens when displaying a solid blue image. Furthermore, since the second power terminal only powers the red and green sub-pixels, and no longer powers all three simultaneously, the change in current on the power lines connected to the red and green sub-pixels decreases when the display panel switches from displaying a white image to displaying a solid red or green image. This reduces the voltage drop difference between the secondary and primary screens, improving the display difference between the secondary and primary screens when displaying a solid red or green image.

[0011] According to any of the foregoing embodiments of the first aspect of this application, the first color sub-pixel includes a red sub-pixel, and one of the second color sub-pixel and the third color sub-pixel is a green sub-pixel and the other is a blue sub-pixel.

[0012] In this way, since the red sub-pixel is powered independently via the first power line connected to the first power terminal, the current on the first power line connected to the red sub-pixel remains unchanged when the display panel switches from displaying a white image to displaying a solid red image. Therefore, there is no voltage drop or the voltage drop is the same on both the secondary and primary screens, eliminating the display difference between the secondary and primary screens when displaying a solid red image. Furthermore, since the second power terminal only powers the blue and green sub-pixels, and no longer simultaneously powers the red, blue, and green sub-pixels, the change in current on the power lines connected to the blue and green sub-pixels decreases when the display panel switches from displaying a white image to displaying a solid blue or green image. This reduces the voltage drop difference between the secondary and primary screens, improving the display difference between the secondary and primary screens when displaying a solid blue or green image.

[0013] According to any of the foregoing embodiments of the first aspect of this application, the pixel unit further includes a third color sub-pixel, and the display panel may further include a third power line and a third power terminal, wherein the third color sub-pixel is electrically connected to the third power terminal through the third power line.

[0014] In this way, the first, second, and third color sub-pixels are all powered by different power supplies. For any of the first, second, and third colors, since the color sub-pixel is powered independently through a power line connected to the power supply terminal, when the display panel switches from displaying a white screen to displaying a solid color screen of that color, the current in the power line connected to that color sub-pixel does not change. Therefore, the power line connected to that color sub-pixel will not experience voltage drop or will have the same voltage drop degree between the secondary screen and the main screen, thereby improving or even eliminating the display difference between the secondary screen and the main screen.

[0015] According to any of the foregoing embodiments of the first aspect of this application, the first power line includes multiple first sub-power lines and at least one second sub-power line, the first sub-power lines extend along a first direction, the second sub-power lines extend along a second direction, the first direction and the second direction intersect, and the first sub-power lines are electrically connected to a first power terminal; the second power line includes multiple third sub-power lines and at least one fourth sub-power line, the third sub-power lines extend along the first direction, the fourth sub-power lines extend along the second direction, and the third sub-power lines are electrically connected to a second power terminal.

[0016] In this way, the first sub-power line extending in the first direction and the second sub-power line extending in the second direction can supply power to all the first color sub-pixels in the display panel, and the third sub-power line extending in the first direction and the fourth sub-power line extending in the second direction can supply power to all the second color sub-pixels in the display panel or a combination including the second color sub-pixels and the third color sub-pixels.

[0017] According to any of the foregoing embodiments of the first aspect of this application, the light transmittance of the sub-display area is greater than that of the main display area. The sub-display area includes a stacked substrate, a driving device layer, and a light-emitting element layer. The light-emitting element layer includes a first electrode layer, a light-emitting material layer, and a second electrode layer. The driving device layer includes M pixel driving circuits, and the light-emitting element layer includes N light-emitting elements of sub-pixels, wherein M is less than N and all are positive integers. Each pixel driving circuit is electrically connected to the anode of the light-emitting elements of multiple sub-pixels of the same color located in the first electrode layer.

[0018] In this way, instead of using one pixel driving circuit to drive one light-emitting element in the secondary display area (i.e., the secondary screen), one pixel driving circuit drives multiple light-emitting elements. This reduces the number of pixel driving circuits in the secondary display area, thereby improving the light transmittance of the secondary display area.

[0019] According to any of the foregoing embodiments of the first aspect of this application, the driving device layer or the light-emitting element layer further includes a first transparent conductive layer, and each pixel driving circuit is connected to the anode of the light-emitting element of multiple sub-pixels of the same color through a first transparent trace, the first transparent trace being located in the first transparent conductive layer.

[0020] In this way, since the traces between the pixel driving circuit and the anodes of multiple light-emitting elements, or the traces connecting the anodes of multiple light-emitting elements, are transparent traces, the light transmittance of the sub-display area can be improved.

[0021] According to any of the foregoing embodiments of the first aspect of this application, the display panel further includes signal lines electrically connected to the pixel driving circuit; the driving device layer includes a stacked metal conductive layer and a second transparent conductive layer, the signal lines include a first segment and a second segment connected to each other, the first segment is located in the metal conductive layer, the second segment is located in the second transparent conductive layer, the orthographic projection of the first segment on the display panel plane overlaps with the orthographic projection of the pixel driving circuit on the display panel plane, and the orthographic projection of the second segment on the display panel plane does not overlap with the orthographic projection of the pixel driving circuit on the display panel plane.

[0022] In this way, on the one hand, since part of the signal line traces (the second segment) in the sub-display area is transparent, the light transmittance of the sub-display area can be improved; on the other hand, the first segment where the signal line in the sub-display area overlaps with the pixel driving circuit is still made of metal, that is, the driving devices (such as transistors) in the pixel driving circuit are still made of metal, thus ensuring the performance of the driving devices.

[0023] According to any of the foregoing embodiments of the first aspect of this application, the pixel unit further includes a third color sub-pixel, the second power line is electrically connected to both the second color sub-pixel and the third color sub-pixel, and the signal line includes the second power line.

[0024] In this way, the second section of the second power line connecting the second color sub-pixel and the third color sub-pixel is a transparent trace, which can improve the light transmittance of the sub-display area.

[0025] According to any of the foregoing embodiments of the first aspect of this application, the metal conductive layer may include a first metal layer, a second metal layer and a third metal layer stacked together, and an insulating layer sandwiched between any two metal layers; the first sub-power line and the third sub-power line are located in the third metal layer, and the second sub-power line and the fourth sub-power line are located in any one of the first metal layer and the second metal layer.

[0026] In this way, the first and third sub-power lines in the first power line, as well as the second and fourth sub-power lines in the second power line, are all fabricated in the original first, second, and third metal layers in the display panel. This does not require additional processes, which simplifies the process and reduces the production cost of the display panel.

[0027] According to any of the foregoing embodiments of the first aspect of this application, the metal conductive layer further includes a fourth metal layer, which is located on the side of the third metal layer opposite to the second metal layer. The first sub-power line and the third sub-power line are located in the third metal layer, and the second sub-power line and the fourth sub-power line are located in the fourth metal layer.

[0028] In this way, by adding a fourth metal layer to place the second and fourth sub-power lines, interference from the second and fourth sub-power lines to other signal lines in the first or second metal layer can be avoided, which helps to ensure the stability of the circuits in the display panel.

[0029] According to any of the foregoing embodiments of the first aspect of this application, the first transparent conductive layer is located in any one of the first metal layer, the second metal layer, the third metal layer and the first electrode layer, or between any two of the first metal layer, the second metal layer, the third metal layer and the first electrode layer; the second transparent conductive layer is located in any one of the first metal layer, the second metal layer, the third metal layer and the first electrode layer, or between any two of the first metal layer, the second metal layer, the third metal layer and the first electrode layer, and the first transparent conductive layer and the second transparent conductive layer are located in different film layers.

[0030] According to any of the foregoing embodiments of the first aspect of this application, the first transparent conductive layer and the anode layer of the light-emitting element are located in the same film layer, and the second transparent conductive layer and the third metal layer are located in the same film layer.

[0031] In this way, since the first transparent conductive layer and the first electrode layer are prepared in the same layer, and the second transparent conductive layer and the third metal layer are prepared in the same layer, it is beneficial to simplify the process and reduce the production cost of the display panel.

[0032] According to any of the foregoing embodiments of the first aspect of this application, the orthographic projection of the pixel driving circuit on the substrate overlaps with the orthographic projection of the anode of the light-emitting element on the substrate.

[0033] In this way, since the orthographic projection of the pixel driving circuit on the substrate overlaps with the orthographic projection of the anode of the light-emitting element on the substrate, the area occupied by the poor light transmittance in the sub-display area can be reduced, thereby improving the light transmittance of the sub-display area.

[0034] The display panel and display device of this application embodiment define a main display area and a sub-display area. The display panel includes: a pixel unit, including at least a first color sub-pixel and a second color sub-pixel; a first power line electrically connected to the first color sub-pixel; a second power line electrically connected to the second color sub-pixel; a first power terminal electrically connected to the first power line; and a second power terminal electrically connected to the second power line. For any color among the first and second colors, since the color sub-pixel is powered through a separate voltage terminal and power line, when the display panel switches from displaying a white screen to displaying a pure color screen of that color, the current on the power line connected to the color sub-pixel does not change. Therefore, the power line connected to the color sub-pixel does not experience voltage drop or the voltage drop is the same in the sub-display area and the main display area, thereby improving or even eliminating the display difference between the sub-display area and the main display area. Attached Figure Description

[0035] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the structure of a display panel provided in an embodiment of this application;

[0037] Figure 2 Another structural schematic diagram of the display panel provided in the embodiments of this application;

[0038] Figure 3 A schematic diagram of yet another structure of the display panel provided in an embodiment of this application;

[0039] Figure 4 A cross-sectional schematic diagram of a sub-display area in a display panel provided in an embodiment of this application;

[0040] Figure 5 A partial top view of the sub-display area in the display panel provided in an embodiment of this application;

[0041] Figure 6 Another cross-sectional view of the sub-display area in the display panel provided in the embodiments of this application;

[0042] Figure 7 Another cross-sectional schematic diagram of the sub-display area in the display panel provided in the embodiments of this application;

[0043] Figure 8 Another cross-sectional schematic diagram of the sub-display area in the display panel provided in the embodiments of this application;

[0044] Figure 9 Another cross-sectional schematic diagram of the sub-display area in the display panel provided in the embodiments of this application;

[0045] Figure 10 This is a schematic diagram of a display device provided in an embodiment of this application. Detailed Implementation

[0046] The features and exemplary embodiments of various aspects of this application will be described in detail below. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain this application and not to limit it. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples.

[0047] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0048] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0049] Various modifications and variations can be made to this application without departing from its spirit or scope, which will be apparent to those skilled in the art. Therefore, this application is intended to cover modifications and variations falling within the scope of the corresponding claims (the claimed technical solutions) and their equivalents. It should be noted that the embodiments provided in this application can be combined with each other without contradiction.

[0050] Before describing the technical solutions provided in the embodiments of this application, in order to facilitate understanding of the embodiments of this application, this application first specifically explains the problems existing in the prior art:

[0051] As mentioned above, the inventors of this application have discovered that in related technologies, there is a display difference between the main display area and the secondary display area of ​​the display panel, resulting in poor display effect.

[0052] To address the problem of poor display quality caused by display differences between the main display area and the secondary display area of ​​the display panel, the inventors of this application first researched and analyzed the root causes of the aforementioned technical problem. The specific research and analysis process is as follows:

[0053] The inventors of this application discovered that in related technologies, red, green, and blue sub-pixels share a common power line Vdd. When the display panel displays a white image, the power line Vdd simultaneously supplies power to the red, green, and blue sub-pixels. For example, if the current on the power line Vdd is 100mA, the red sub-pixel receives, for example, 25mA, the blue sub-pixel receives, for example, 55mA, and the green sub-pixel receives, for example, 20mA. When the display panel switches from a white image to a solid red image, the blue and green sub-pixels do not emit light, the voltage output of the power line Vdd decreases, and correspondingly, the current on the power line Vdd drops from 100mA to 25mA, i.e., a current change of 75mA occurs. Because of differences in wiring and components (such as different wiring materials and / or lengths) between the secondary and primary display areas, the voltage drop (IR drop) of the power supply line Vdd differs between the secondary and primary display areas as the current decreases. This results in different brightness changes between the secondary and primary display areas, leading to display differences. Similarly, when the display panel switches from a white screen to a solid blue or green screen, a display difference will also occur between the primary and secondary display areas.

[0054] In view of the inventors’ above-mentioned research findings, the present application provides a display panel and a display device that can solve the technical problem of display differences between the main display area and the sub-display area of ​​the display panel in the related art.

[0055] The technical concept of this application embodiment is as follows: at least one of the red, green, and blue sub-pixels is powered separately through a separate voltage terminal and a power line connected to the voltage terminal. In this way, when the display panel switches from displaying a white screen to displaying a pure color screen, since the color sub-pixel is powered by a separate voltage terminal, the current in the power line connected to the color sub-pixel will not change. Therefore, the power line connected to the color sub-pixel will not experience voltage drop in the sub-display area and the main display area, or the voltage drop will be the same, thereby improving or even eliminating the display difference between the sub-display area and the main display area.

[0056] The display panel provided in the embodiments of this application will be described first below.

[0057] like Figure 1As shown, the display panel 10 provided in this embodiment may include a display area AA and a non-display area NA. The display area AA may further include a sub-display area AA1 and a main display area AA2. The light transmittance of the sub-display area AA1 may be greater than that of the main display area AA2, that is, the sub-display area AA1 may be an area corresponding to an under-display camera and / or touch element. The display panel 10 includes a pixel unit 101, a first power line 102, a second power line 103, a first power terminal 104, and a second power terminal 105. The pixel unit 101 may be distributed in the sub-display area AA1 and the main display area AA2.

[0058] Pixel units 101 are arrayed in the sub-display area AA1 and the main display area AA2. Each pixel unit 101 includes a first color sub-pixel 101a and a second color sub-pixel 101b. The array arrangement can be understood as the pixel units 101 being arranged intersectingly along the row direction X and column direction Y of the display panel 10. Specifically, in both the sub-display area AA1 and the main display area AA2, the first color sub-pixel 101a can be arranged sequentially along the row direction X of the display panel 10 and simultaneously along the column direction Y of the display panel 10. Similarly, in both the sub-display area AA1 and the main display area AA2, the second color sub-pixel 101b can also be arranged sequentially along the row direction X of the display panel 10 and simultaneously along the column direction Y of the display panel 10. It is easy to understand that the combination of the first color sub-pixel 101a and the second color sub-pixel 101b is any two of the following: red sub-pixel, green sub-pixel, and blue sub-pixel. For example, the first color sub-pixel 101a is a green sub-pixel, and the second color sub-pixel 101b is either a red or blue sub-pixel; or, for another example, the first color sub-pixel 101a is a red sub-pixel, and the second color sub-pixel 101b is either a green or blue sub-pixel. The first power line 102 is electrically connected to the first color sub-pixel 101a, and the first power line 102 can be used to transmit a positive voltage power signal to the first color sub-pixel 101a. The second power line 103 is electrically connected to the second color sub-pixel 101b, and the second power line 103 can be used to transmit a positive voltage power signal to the second color sub-pixel 101b. The first power terminal 104 and the second power terminal 105 are Vdd terminals (or Vdd pads) provided on the display panel 10. The first power terminal 104 and the second power terminal 105 can be electrically connected to the driver chip (IC) to receive the positive voltage power signal provided by the driver chip. Compared with the related technology, which uses only one Vdd terminal to power the red, green and blue sub-pixels simultaneously, this embodiment of the application provides different Vdd terminals on the display panel, which can provide Vdd signals of different voltage values ​​to sub-pixels of different colors respectively. For example, the first power terminal 104 provides a first positive voltage power signal Vdd1, and the second power terminal 105 provides a second positive voltage power signal Vdd2, so as to achieve the effect and purpose of powering the red, green and blue sub-pixels separately.

[0059] See also Figure 1In some specific examples, the non-display area NA may include the bonding area NA1. The first power supply terminal 104 and the second power supply terminal 105 may be located in the bonding area NA1, meaning that the first power supply terminal 104 and the second power supply terminal 105 can be the Vdd pads of the bonding area NA1. The first power supply terminal 104 and the second power supply terminal 105 can be connected to the Vdd1 and Vdd2 pins on the driver chip via a flexible printed circuit board (FPC) to receive the positive voltage power signal provided by the driver chip.

[0060] In this way, for any color in the first and second colors, since the color sub-pixel is supplied with a voltage signal through a separate voltage terminal and power line, when the display panel switches from displaying a white screen to displaying a pure color screen, the current on the power line connected to the color sub-pixel will not change. Therefore, the power line connected to the color sub-pixel will not experience voltage drop in the sub-display area AA1 and the main display area AA2, or the voltage drop will be the same. This improves or even eliminates the display difference between the sub-display area AA1 and the main display area AA2.

[0061] like Figure 2 As shown, according to some embodiments of this application, optionally, the display panel 10 may further include a third power line 106, and the pixel unit 101 may further include a third color sub-pixel 101c. The third color sub-pixel 101c can be electrically connected to a first power terminal 104 or a second power terminal 105 via the third power line 106. That is, the third color sub-pixel 101c can be electrically connected to the first power terminal 104 simultaneously with the first color sub-pixel 101a, or the third color sub-pixel 101c can be electrically connected to the second power terminal 105 simultaneously with the second color sub-pixel 101b.

[0062] In the secondary display area AA1 and the main display area AA2, the first color sub-pixels 101a can be arranged sequentially along the row direction X of the display panel 10, and simultaneously arranged sequentially along the column direction Y of the display panel 10. Similarly, in the secondary display area AA1 and the main display area AA2, the second color sub-pixels 101b can also be arranged sequentially along the row direction X of the display panel 10, and simultaneously arranged sequentially along the column direction Y of the display panel 10. In the secondary display area AA1 and the main display area AA2, the third color sub-pixels 101c can also be arranged sequentially along the row direction X of the display panel 10, and simultaneously arranged sequentially along the column direction Y of the display panel 10.

[0063] Figure 2 An example is shown where the third color sub-pixel 101c and the second color sub-pixel 101b are simultaneously electrically connected to the second power supply terminal 105; another example is shown where the third color sub-pixel 101c and the first color sub-pixel 101a are simultaneously electrically connected to the first power supply terminal 104. Figure 2 The examples shown are similar and will not be repeated here. Figure 2In this embodiment, the third color sub-pixel 101c is electrically connected to the second power terminal 105 via a third power line 106. The specific routing of the third power line 106 will be described below.

[0064] In some specific examples, the first color sub-pixel 101a may include a green sub-pixel, and one of the second color sub-pixel 101b and the third color sub-pixel 101c may be a red sub-pixel and the other a blue sub-pixel. That is, the green sub-pixel can be supplied with a voltage signal independently through the first power supply terminal 104, while the red and blue sub-pixels can be supplied with a voltage signal together through the second power supply terminal 105.

[0065] The reason why this application adopts the method of powering the green sub-pixel separately and the red and blue sub-pixels together is mainly because: the inventors of this application have discovered that when the display panel switches from displaying a white screen to displaying a pure green screen, the current change on the power line Vdd is the largest. Correspondingly, the difference in IR drop between the power line Vdd in the sub-display area and the main display area is the largest, and the display difference between the sub-display area and the main display area is the most obvious.

[0066] Therefore, in view of the above findings, the green sub-pixel is selected to be powered separately through the first power terminal 104 and the first power line 102. So when the display panel switches from displaying a white image to displaying a solid green image, the current on the first power line 102 connected to the green sub-pixel does not change. As a result, the power line connected to the green sub-pixel will not experience voltage drop in the sub-display area and the main display area, or the voltage drop will be the same. This eliminates the display difference between the sub-display area and the main display area when the display panel displays a solid green image. Furthermore, since the second power supply terminal 105 only supplies voltage signals to the red and blue sub-pixels, and no longer supplies voltage signals to the red, blue, and green sub-pixels simultaneously, when the display panel switches from displaying a white image to displaying a red or blue solid color image, the change in current on the second power line 103 connected to the red sub-pixel or the third power line 106 connected to the blue sub-pixel will decrease. As a result, the voltage drop difference between the second power line 103 connected to the red sub-pixel or the third power line 106 connected to the blue sub-pixel in the sub-display area and the main display area will decrease, thereby improving the display difference between the sub-display area and the main display area when the display panel displays a red or blue solid color image.

[0067] Similarly, in other specific examples, the first color sub-pixel 101a may include a blue sub-pixel, and one of the second color sub-pixel 101b and the third color sub-pixel 101c may be a red sub-pixel and the other a green sub-pixel. That is, the blue sub-pixel can be supplied with a voltage signal separately through the first power supply terminal 104, while the red and green sub-pixels can be supplied with a voltage signal together through the second power supply terminal 105.

[0068] In this way, since the blue sub-pixel is powered separately through the first power terminal 104 and the first power line 102, when the display panel switches from displaying a white image to displaying a pure blue image, the current on the first power line 102 connected to the blue sub-pixel will not change. As a result, the first power line 102 connected to the blue sub-pixel will not experience a voltage drop in the sub-display area and the main display area, or the voltage drop will be the same. This eliminates the display difference between the sub-display area and the main display area when the display panel displays a pure blue image. Furthermore, since the second power supply terminal 105 only supplies voltage signals to the red and green sub-pixels, and no longer supplies voltage signals to the red, blue, and green sub-pixels simultaneously, when the display panel switches from displaying a white image to displaying a pure red or green image, the change in current on the second power line 103 connected to the red sub-pixel or the third power line 106 connected to the green sub-pixel will decrease. As a result, the voltage drop difference between the second power line 103 connected to the red sub-pixel or the third power line 106 connected to the green sub-pixel in the sub-display area and the main display area will decrease, thereby improving the display difference between the sub-display area and the main display area when the display panel displays a pure red or green image.

[0069] Similarly, in some specific examples, the first color sub-pixel 101a may include a red sub-pixel, and one of the second color sub-pixel 101b and the third color sub-pixel 101c may be a green sub-pixel and the other a blue sub-pixel. That is, the red sub-pixel can be supplied with a voltage signal separately through the first power supply terminal 104, while the green and blue sub-pixels can be supplied with a voltage signal together through the second power supply terminal 105.

[0070] In this way, since the red sub-pixel is powered separately through the first power terminal 104 and the first power line 102, when the display panel switches from displaying a white image to displaying a pure red image, the current on the first power line 102 connected to the red sub-pixel will not change. As a result, the first power line 102 connected to the red sub-pixel will not experience a voltage drop in the sub-display area and the main display area, or the voltage drop will be the same. This eliminates the display difference between the sub-display area and the main display area when the display panel displays a pure red image. Furthermore, since the second power supply terminal 105 only supplies voltage signals to the blue and green sub-pixels, and no longer supplies voltage signals to the red, blue, and green sub-pixels simultaneously, when the display panel switches from displaying a white image to displaying a blue or green solid color image, the change in current on the second power line 103 connected to the blue sub-pixel or the third power line 106 connected to the green sub-pixel will decrease. As a result, the voltage drop difference between the second power line 103 connected to the blue sub-pixel or the third power line 106 connected to the green sub-pixel in the sub-display area and the main display area will decrease, thereby improving the display difference between the sub-display area and the main display area when the display panel displays a blue or green solid color image.

[0071] and Figure 2 The embodiments shown differ from those shown, such as Figure 3 As shown, according to some other embodiments of this application, the display panel 10 may optionally include a third power supply terminal 107. Similar to the first power supply terminal 104 and the second power supply terminal 105, the third power supply terminal 107 may be a Vdd terminal (or Vdd pad) disposed on the display panel 10. The third power supply terminal 107 may be electrically connected to a driver chip (IC) to receive a positive voltage power signal provided by the driver chip. For example, the third power supply terminal 107 may provide a third positive voltage power signal Vdd3. The third color sub-pixel 101c may be electrically connected to the third power supply terminal 107 via a third power line 106.

[0072] exist Figure 3 In the illustrated embodiment, the first color sub-pixel 101a is powered independently through the first power terminal 104 and the first power line 102, the second color sub-pixel 101b is powered independently through the second power terminal 105 and the second power line 103, and the third color sub-pixel 101c is powered independently through the third power terminal 107 and the third power line 106. The first color sub-pixel 101a can be any one of a red, blue, or green sub-pixel; the second color sub-pixel 101b can be any one of a red, blue, or green sub-pixel; and the third color sub-pixel 101c can be any one of a red, blue, or green sub-pixel. It is only necessary to ensure that the colors of the first color sub-pixel 101a, the second color sub-pixel 101b, and the third color sub-pixel 101c are all different.

[0073] In this way, the first color sub-pixel 101a, the second color sub-pixel 101b, and the third color sub-pixel 101c are all powered by different power terminals. For any of the first, second, and third colors, since the color sub-pixel is supplied with a voltage signal through a separate power terminal, when the display panel switches from displaying a white image to displaying a pure color image, the current on the power line between the color sub-pixel and the power terminal does not change. Therefore, the power line connected to the color sub-pixel will not experience voltage drop or will have the same voltage drop in the sub-display area and the main display area, thereby improving or even eliminating the display difference between the sub-display area and the main display area when the display panel displays a pure red, blue, or green image.

[0074] like Figure 2 As shown, in some specific embodiments, optionally, the first power line 102 may include multiple first sub-power lines 1021 and at least one second sub-power line 1022. The first sub-power lines 1021 may run along a first direction ( Figure 2 The second sub-power line 1022 can extend along the second direction (as shown in the Y direction). Figure 2 Extending in the X direction (as shown), the first direction intersects with the second direction. For example, the first direction can be a column direction, and the second direction can be a row direction. The first sub-power line 1021 can be electrically connected to the first power terminal 104 to receive a positive voltage power signal provided by the driver chip. In some examples, the first sub-power line 1021 can be electrically connected to the first power terminal 104, for example, via a second sub-power line 1022.

[0075] The first color sub-pixel 101a can be electrically connected to at least one of the first sub-power line 1021 and the second sub-power line 1022. In this embodiment, the first color sub-pixel 101a can be electrically connected to the first sub-power line 1021. In this way, power can be supplied to all the first color sub-pixels 101a in the display panel 10 through the first sub-power line 1021 extending in the first direction and the second sub-power line 1022 extending in the second direction.

[0076] Similarly, the second power line 103 may include multiple third sub-power lines 1031 and at least one fourth sub-power line 1032. The third sub-power lines 1031 may extend along a first direction, and the fourth sub-power line 1032 may extend along a second direction. The third sub-power lines 1031 may be electrically connected to the second power terminal 105 to receive a positive voltage power signal provided by the driver chip. In some examples, the third sub-power lines 1031 may be electrically connected to the second power terminal 105 via, for example, the fourth sub-power line 1032.

[0077] The second color sub-pixel 101b can be electrically connected to at least one of the third sub-power line 1031 and the fourth sub-power line 1032. In this embodiment, the second color sub-pixel 101b can be electrically connected to the third sub-power line 1031. In this way, power can be supplied to all the second color sub-pixels 101b in the display panel 10 through the third sub-power line 1031 extending in the first direction and the fourth sub-power line 1032 extending in the second direction.

[0078] See also Figure 2 Similarly, the third power line 106 may include a fifth sub-power line 1061 and at least one sixth sub-power line 1062. The sixth sub-power line 1062 may extend along a first direction or a second direction. The third color sub-pixel 101c may be electrically connected to the first power terminal 104 or the second power terminal 105 via the third power line 106. Specifically, in this embodiment, the third color sub-pixel 101c may be electrically connected via the fifth sub-power line 1061, and the fifth sub-power line 1061 may then be electrically connected to the first power terminal 104 or the second power terminal 105 via the sixth sub-power line 1062.

[0079] In this way, power can be supplied to all the third color sub-pixels 101c in the display panel 10 through the fifth sub-power line 1061 extending in the first direction and the sixth sub-power line 1062 extending in the second direction.

[0080] like Figure 3 As shown, corresponding Figure 3 In the illustrated embodiment, in some other specific embodiments, the display panel 10 may optionally include a third power supply terminal 107. The third color sub-pixel 101c can be electrically connected to the third power supply terminal 107 via a third power supply line 106. Specifically, the third power supply line 106 may include multiple fifth sub-power supply lines 1061 and at least one sixth sub-power supply line 1062. The fifth sub-power supply lines 1061 may extend along a first direction, and the sixth sub-power supply line 1062 may extend along a second direction. In some examples, the fifth sub-power supply line 1061 can be electrically connected to the third power supply terminal 107 via the sixth sub-power supply line 1062, thereby receiving a positive voltage power signal provided by the driver chip.

[0081] The third color sub-pixel 101c can be electrically connected to at least one of the fifth sub-power line 1061 and the sixth sub-power line 1062. In this embodiment, the third color sub-pixel 101c can be electrically connected to the fifth sub-power line 1061. In this way, power can be supplied to all the third color sub-pixels 101c in the display panel 10 through the fifth sub-power line 1061 extending in the first direction and the sixth sub-power line 1062 extending in the second direction.

[0082] It should be noted that the first sub-power line 1021, the third sub-power line 1031 and the fifth sub-power line 1061 can be located in the same membrane layer, and the second sub-power line 1022, the fourth sub-power line 1032 and the sixth sub-power line 1062 can be located in the same membrane layer. The specific membrane layer structure is described below.

[0083] like Figure 4 As shown, according to some embodiments of this application, optionally, the sub-display area AA1 may include a stacked substrate 401, a driving device layer 402, and a light-emitting element layer 403. The light-emitting element layer 403 may further include a first electrode layer 4031, a light-emitting material layer 4032, and a second electrode layer 4033. Specifically, the first electrode layer 4031 may be a light-emitting element anode layer, and the second electrode layer 4033 may be a light-emitting element cathode layer. It is worth noting that the driving device layer 402 includes M pixel driving circuits (…). Figure 4 (Not shown), the light-emitting element layer 403 includes N sub-pixel light-emitting elements ( Figure 4 (Not shown), M is less than N and both M and N are positive integers. Each pixel driving circuit can be electrically connected to the anodes of the light-emitting elements of multiple sub-pixels of the same color located in the first electrode layer 4031. For example, a pixel driving circuit can be electrically connected to the anodes of four light-emitting elements of the same color.

[0084] In this way, instead of using one pixel driving circuit to drive one light-emitting element in the sub-display area AA1, one pixel driving circuit drives multiple light-emitting elements. This reduces the number of pixel driving circuits in the sub-display area AA1, thereby improving the light transmittance of the sub-display area AA1.

[0085] See also Figure 4 According to some embodiments of this application, optionally, the driving device layer 402 or the light-emitting element layer 403 may further include a first transparent conductive layer 404. The first transparent conductive layer 404 has a first transparent trace, and each pixel driving circuit is connected to the anode of the light-emitting element of multiple sub-pixels of the same color through the first transparent trace. Specifically, for example, the anodes of the light-emitting elements of multiple sub-pixels of the same color may be interconnected through the first transparent trace, and then the pixel driving circuit may be electrically connected to the anode of the light-emitting element of any one of the multiple sub-pixels of the same color, thereby realizing the electrical connection of one pixel driving circuit to the anodes of multiple light-emitting elements of the same color.

[0086] In this way, since the traces between the pixel driving circuit and the anodes of multiple light-emitting elements, or the traces connecting the anodes of multiple light-emitting elements, are transparent traces, the light transmittance of the sub-display area can be improved.

[0087] Figure 5This is a partial top view of the display panel provided in an embodiment of this application. Figure 6 This is a partial cross-sectional view of a display panel provided in an embodiment of this application. (In conjunction with...) Figure 5 and Figure 6 As shown, the display panel 10 may further include signal lines 501, which are electrically connected to the pixel driving circuit 500. Exemplarily, the signal line 501 may include any one of a scan line, a light emission control signal line, a reference signal line, a data line, a first power line, and a second power line. The driving device layer 402 may include a stacked metal conductive layer 4021 and a second transparent conductive layer 4022. The signal line 501 may include a first segment 501a and a second segment 501b connected to each other. The first segment 501a may be located in the metal conductive layer 4021, and the second segment 501b may be located in the second transparent conductive layer 4022. The first segment 501a and the second segment 501b located in different film layers may be connected through vias. The orthographic projection of the first segment 501a on the display panel plane (such as the substrate 401) overlaps with the orthographic projection of the pixel driving circuit 500 on the display panel plane, while the orthographic projection of the second segment 501b on the display panel plane does not overlap with the orthographic projection of the pixel driving circuit 500 on the display panel plane. That is, the first segment 501a can be used to form driving elements in the pixel driving circuit 500, such as the gate, source, and drain of a transistor, and the second segment 501b can serve as a connection line between different pixel driving circuits 500. In other words, the electrodes of the driving elements in the pixel driving circuit 500 are still made of metal, while the connection lines between different pixel driving circuits 500 use transparent traces. It should be noted that the signal line 501 can be along... Figure 5 The row direction shown can extend, but it can also extend along the column direction of the display panel 10. This application embodiment does not limit this.

[0088] In this way, on the one hand, since part of the signal line 501 in the sub-display area (the second segment 501b) is a transparent trace, the light transmittance of the sub-display area can be improved; on the other hand, the first segment 501a of the signal line in the sub-display area that overlaps with the pixel driving circuit is still made of metal, that is, the driving device (such as transistor) in the pixel driving circuit is still made of metal, thus ensuring the performance of the driving device.

[0089] It is readily understood that signal line 501 may include second power line 103. A portion of the routing of second power line 103 is transparent, as shown in [reference needed]. Figure 2 The fourth sub-power line 1032 extending along the second direction in the second power line 103 can be located in the second transparent conductive layer 4022, that is, the fourth sub-power line 1032 can be a transparent trace, thereby improving the light transmittance of the sub-display area.

[0090] The film structure of the display panel will be described below with reference to some embodiments of this application.

[0091] like Figure 7 As shown, according to some embodiments of this application, optionally, the metal conductive layer 4021 may include a first metal layer M1, a second metal layer M2, and a third metal layer M3 stacked together, and an insulating layer sandwiched between any two metal layers. The first sub-power line 1021, the third sub-power line 1031, and the fifth sub-power line 1061 may be located in the third metal layer M3, and the second sub-power line 1022, the fourth sub-power line 1032, and the sixth sub-power line 1062 may be located in any one of the first metal layer M1 and the second metal layer M2. Power lines located in the third metal layer M3 can be connected to power lines located in any one of the first metal layer M1 and the second metal layer M2 via vias. For example, the first sub-power line 1021 can be connected to the second sub-power line 1022 via a via, the third sub-power line 1031 can be connected to the fourth sub-power line 1032 via a via, and the fifth sub-power line 1061 can be connected to the sixth sub-power line 1062 via a via. Furthermore, in some specific examples, the scan line and the light emission control signal line can be located in the first metal layer M1, the reference signal line can be located in the second metal layer M2, and the data line can be located in the third metal layer M3.

[0092] In this way, the first sub-power line 1021 and the second sub-power line 1022 in the first power line 102, the third sub-power line 1031 and the fourth sub-power line 1032 in the second power line 103, and the fifth sub-power line 1061 and the sixth sub-power line 1062 in the third power line 106 are all prepared in the original first metal layer M1, the second metal layer M2 and the third metal layer M3 in the display panel 10, without adding any additional processes, which is conducive to simplifying the process and reducing the production cost of the display panel.

[0093] like Figure 8 As shown, according to some embodiments of this application, optionally, the conductive metal layer 4021 may further include a fourth metal layer M4, which is located on the side of the third metal layer M3 facing away from the second metal layer M2. The first sub-power line 1021, the third sub-power line 1031, and the fifth sub-power line 1061 may be located in the third metal layer M3, and the second sub-power line 1022, the fourth sub-power line 1032, and the sixth sub-power line 1062 may be located in the fourth metal layer M4. The power lines located in the third metal layer M3 and the power lines in the fourth metal layer M4 can be connected via vias. For example, the first sub-power line 1021 can be connected to the second sub-power line 1022 via a via, the third sub-power line 1031 can be connected to the fourth sub-power line 1032 via a via, and the fifth sub-power line 1061 can be connected to the sixth sub-power line 1062 via a via.

[0094] In this way, by adding a fourth metal layer M4 to house the second sub-power line 1022, the fourth sub-power line 1032, and the sixth sub-power line 1062, interference from the second sub-power line 1022, the fourth sub-power line 1032, and the sixth sub-power line 1062 to other signal lines in the first metal layer M1 or the second metal layer M2 can be avoided, which helps to ensure the stability of the circuit in the display panel.

[0095] like Figure 9 As shown, according to some embodiments of this application, optionally, the first transparent conductive layer 404 may be located in any one of the first metal layer M1, the second metal layer M2, the third metal layer M3, and the first electrode layer 4031, or between any two of the first metal layer M1, the second metal layer M2, the third metal layer M3, and the first electrode layer 4031. The second transparent conductive layer 4022 may be located in any one of the first metal layer M1, the second metal layer M2, the third metal layer M3, and the first electrode layer 4031, or between any two of the first metal layer M1, the second metal layer M2, the third metal layer M3, and the first electrode layer 4031. It is readily understood that the first transparent conductive layer 404 and the second transparent conductive layer 4022 are located in different film layers.

[0096] In some specific examples, a first insulating layer is sandwiched between the first metal layer M1 and the second metal layer M2, and a second insulating layer is sandwiched between the second metal layer M2 and the third metal layer M3. A first transparent conductive layer 404 may be located between the second metal layer M2 and the second insulating layer, and a second transparent conductive layer 4022 may be located between the first metal layer M1 and the first insulating layer.

[0097] In some specific examples, a planarization layer is sandwiched between the third metal layer M3 and the first electrode layer 4031, the first transparent conductive layer 404 may be located between the planarization layer and the first electrode layer 4031, and the second transparent conductive layer 4022 may be located between the third metal layer M3 and the planarization layer.

[0098] In some specific examples, for instance, the first transparent conductive layer 404 may be in the same film layer as the first electrode layer 4031, and the second transparent conductive layer 4022 may be in the same film layer as the third metal layer M3.

[0099] In this way, since the first transparent conductive layer 404 and the first electrode layer 4031 are prepared in the same layer, and the second transparent conductive layer 4022 and the third metal layer M3 are prepared in the same layer, it is beneficial to simplify the process and reduce the production cost of the display panel.

[0100] According to some embodiments of this application, optionally, the orthographic projection of the pixel driving circuit on the substrate 401 overlaps with the orthographic projection of the anode of the light-emitting element on the substrate 401. For example, the pixel driving circuit may be located directly below the anode of the light-emitting element (i.e., on the side closer to the substrate 401).

[0101] In this way, since the orthographic projection of the pixel driving circuit on the substrate overlaps with the orthographic projection of the anode of the light-emitting element on the substrate, the area occupied by the poor light transmittance in the sub-display area can be reduced, thereby improving the light transmittance of the sub-display area.

[0102] According to some embodiments of this application, optionally, the size of the transistor in the sub-display area AA1 is smaller than the size of the transistor in the main display area AA2. For example, the area of ​​the transistor in the sub-display area AA1 projected onto the substrate 401 is smaller than the area of ​​the transistor in the main display area AA2 projected onto the substrate 401.

[0103] In this way, by setting smaller transistors in the sub-display area AA1, the area occupied by the transistors in the sub-display area can be reduced, thereby improving the light transmittance of the sub-display area.

[0104] According to some embodiments of this application, optionally, some organic film layers or some inorganic film layers in the sub-display area AA1 can be removed, for example, the planarization layer between the third metal layer M3 and the first electrode layer 4031 can be removed, thereby improving the light transmittance of the sub-display area.

[0105] It should be noted that the materials of the first transparent conductive layer 404 and the second transparent conductive layer 4022 in the embodiments of this application include, but are not limited to, indium tin oxide (ITO), and can also be other transparent materials, as long as the light transmittance is high enough and the impedance is low enough. In addition, the embodiments of this application do not limit the process of adding transparent materials; for example, conventional array processes can be used for patterning.

[0106] Based on the display panel provided in the above embodiments, this application also provides a display device. For example... Figure 10 As shown, the display device 1000 may include a device body 20 and a display panel 10 as described in the above embodiments, with the display panel 10 covering the device body 20. The device body 20 may contain various components, such as sensors and processing devices, and is not limited thereto. Specifically, the display device 1000 may be a mobile phone, computer, tablet computer, digital camera, television, electronic paper, or other device with display functionality, and is not limited thereto.

[0107] It should be clarified that the various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. For the display panel embodiments and display device embodiments, relevant parts can be referred to the description sections of the pixel driving circuit embodiments and array substrate embodiments. This application is not limited to the specific structures described above and shown in the figures. Those skilled in the art can make various changes, modifications, and additions after understanding the spirit of this application. Furthermore, for the sake of brevity, detailed descriptions of known technologies are omitted here.

[0108] Those skilled in the art will understand that the above embodiments are exemplary and not restrictive. Different technical features appearing in different embodiments can be combined to achieve beneficial effects. Based on a study of the drawings, specification, and claims, those skilled in the art should be able to understand and implement other variations of the disclosed embodiments. In the claims, the term "comprising" does not exclude other structures; the quantity refers to "one" but does not exclude multiple; the terms "first" and "second" are used to identify names and not to indicate any particular order. Any reference numerals in the claims should not be construed as limiting the scope of protection. The appearance of certain technical features in different dependent claims does not mean that these technical features cannot be combined to achieve beneficial effects.

Claims

1. A display panel, defining a main display area and a secondary display area, characterized in that, include: A pixel unit is arrayed in the sub-display area and the main display area, and the pixel unit includes a first color sub-pixel and a second color sub-pixel; The first power line is electrically connected to the first color sub-pixel; The second power line is electrically connected to the second color sub-pixel; The first power supply terminal is electrically connected to the first power supply line; The second power supply terminal is electrically connected to the second power supply line; The sub-display area includes a stacked substrate, a driving device layer, and a light-emitting element layer. The light-emitting element layer includes a first electrode layer, a light-emitting material layer, and a second electrode layer. The driving device layer includes a pixel driving circuit. Each pixel driving circuit is electrically connected to the anode of the light-emitting element of a plurality of sub-pixels of the same color located in the first electrode layer. The display panel also includes signal lines, which are electrically connected to the pixel driving circuit. The driving device layer includes a stacked metal conductive layer and a second transparent conductive layer. The signal line includes a first segment and a second segment connected to each other. The first segment is located in the metal conductive layer, and the second segment is located in the second transparent conductive layer. The orthographic projection of the first segment on the display panel plane overlaps with the orthographic projection of the pixel driving circuit on the display panel plane. The orthographic projection of the second segment on the display panel plane does not overlap with the orthographic projection of the pixel driving circuit on the display panel plane.

2. The display panel according to claim 1, characterized in that, The display panel further includes a third power line, and the pixel unit further includes a third color sub-pixel, which is electrically connected to the first power terminal or the second power terminal via the third power line.

3. The display panel according to claim 1, characterized in that, The pixel unit further includes a third color sub-pixel, and the display panel further includes a third power line and a third power terminal, wherein the third color sub-pixel is electrically connected to the third power terminal through the third power line.

4. The display panel according to claim 1, characterized in that, The first power line includes multiple first sub-power lines and at least one second sub-power line. The first sub-power lines extend along a first direction, and the second power lines extend along a second direction. The first direction and the second direction intersect, and the first sub-power lines are electrically connected to the first power terminal. The second power line includes multiple third sub-power lines and at least one fourth sub-power line. The third sub-power lines extend along the first direction, and the fourth sub-power lines extend along the second direction. The third sub-power lines are electrically connected to the second power terminal.

5. The display panel according to claim 4, characterized in that, The light transmittance of the sub-display area is greater than that of the main display area. The driving device layer includes M pixel driving circuits, and the light-emitting element layer includes N sub-pixel light-emitting elements, where M is less than N and both are positive integers.

6. The display panel according to claim 5, characterized in that, The driving device layer or the light-emitting element layer further includes a first transparent conductive layer. Each pixel driving circuit is connected to the anode of the light-emitting element of multiple sub-pixels of the same color through a first transparent trace, and the first transparent trace is located in the first transparent conductive layer.

7. The display panel according to claim 6, characterized in that, The pixel unit further includes a third color sub-pixel, the second power line is electrically connected to both the second color sub-pixel and the third color sub-pixel, and the signal line includes the second power line.

8. The display panel according to claim 7, characterized in that, The conductive metal layer includes a first metal layer, a second metal layer, and a third metal layer stacked together, as well as an insulating layer sandwiched between any two metal layers.

9. The display panel according to claim 8, characterized in that, The first sub-power line and the third sub-power line are located in the third metal layer, and the second sub-power line and the fourth sub-power line are located in either the first metal layer or the second metal layer.

10. The display panel according to claim 8, characterized in that, The conductive metal layer further includes a fourth metal layer, which is located on the side of the third metal layer opposite to the second metal layer. The first sub-power line and the third sub-power line are located on the third metal layer, and the second sub-power line and the fourth sub-power line are located on the fourth metal layer.

11. The display panel according to claim 8, characterized in that, The first transparent conductive layer is located in any one of the first metal layer, the second metal layer, the third metal layer and the first electrode layer, or between any two of the first metal layer, the second metal layer, the third metal layer and the first electrode layer.

12. The display panel according to claim 11, characterized in that, The second transparent conductive layer is located in any one of the first metal layer, the second metal layer, the third metal layer and the first electrode layer, or between any two of the first metal layer, the second metal layer, the third metal layer and the first electrode layer. The first transparent conductive layer and the second transparent conductive layer are located in different film layers.

13. The display panel according to claim 12, characterized in that, The first transparent conductive layer and the first electrode layer are in the same film layer, and the second transparent conductive layer and the third metal layer are in the same film layer.

14. The display panel according to claim 5, characterized in that, The orthographic projection of the pixel driving circuit on the substrate overlaps with the orthographic projection of the anode of the light-emitting element on the substrate.

15. A display device, characterized in that, Includes the display panel as described in any one of claims 1-14.

Images