Display panel and display device
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-05-12
- Publication Date
- 2026-08-11
Smart Images
Figure CN117136641B_ABST
Abstract
Description
[0001] This application claims priority to PCT International Patent Application No. PCT / CN2022 / 075242, filed on January 30, 2022, entitled “Display Panel and Display Device”, the entire contents of which are incorporated herein by reference. Technical Field
[0002] This application relates to the field of display technology, and in particular to a display panel and display device. Background Technology
[0003] Currently, display devices typically include light-sensitive sensors such as image sensors to enable functions like taking photos or biometric identification. To increase the screen-to-body ratio of display devices, one approach is to place the image sensor below the display panel, ensuring that the area of the display panel directly opposite the image sensor is light-transmitting while still displaying an image. Summary of the Invention
[0004] This application provides a display panel and a display device. The technical solution is as follows:
[0005] According to one aspect of this application, a display panel is provided, the display panel comprising:
[0006] A substrate having a light-transmitting display area and a conventional display area located around the light-transmitting display area;
[0007] Multiple light-emitting devices located in the light-transmitting display area, multiple pixel driving circuits located in the conventional display area, and multiple connecting lines and multiple compensation parts located on the substrate;
[0008] The plurality of light-emitting devices are arranged along a first direction;
[0009] The plurality of pixel driving circuits are electrically connected to the plurality of light-emitting devices, and the plurality of pixel driving circuits include at least a first pixel driving circuit and a second pixel driving circuit. The first pixel driving circuit and the second pixel driving circuit are respectively located on both sides of the light-transmitting display area in the first direction. The first pixel driving circuit and the second pixel driving circuit are respectively electrically connected to the light-emitting devices through the connecting lines. The connecting lines include a first connecting line and a second connecting line. The length of the first connecting line to which the first pixel driving circuit is electrically connected is less than the length of the second connecting line to which the second pixel driving circuit is electrically connected. The compensation part is connected to the first connecting line. The first connecting line and the second connecting line are two of the plurality of connecting lines.
[0010] Optionally, the plurality of pixel driving circuits include a plurality of pixel driving circuits arranged on the substrate, the plurality of pixel driving circuits being arranged along the first direction, and a column of the pixel driving circuits including a plurality of the pixel driving circuits arranged along a second direction, wherein the angle between the second direction and the first direction is greater than 0 degrees and less than or equal to 90 degrees.
[0011] The first pixel driving circuit is located in the nth column of the pixel driving circuit on the first side of the light-transmitting display area, and the second pixel driving circuit is located in the nth column of the pixel driving circuit on the second side of the light-transmitting display area. The first side and the second side are the two sides of the light-transmitting display area in the first direction, and n is an integer greater than or equal to 1.
[0012] Optionally, the compensation section includes a linear compensation section located in the conventional display area.
[0013] Optionally, the shape of the linear compensation part includes at least one of the following: straight, S-shaped, spiral, and broken line.
[0014] Optionally, the compensation unit includes a block-shaped compensation unit located in the conventional display area.
[0015] Optionally, the shape of the block-shaped compensation part includes at least one of rectangle, triangle, rhombus, circle and hexagon.
[0016] Optionally, the compensation section includes a linear compensation section and a block compensation section, which are located in the conventional display area.
[0017] Optionally, one end of the linear compensation part is connected to the first connecting line, and the other end of the linear compensation part is connected to the block compensation part.
[0018] Optionally, the connecting line and the compensation part are in the same layer.
[0019] Optionally, the compensation part is located at the end of the first connecting line away from the light-transmitting display area.
[0020] Optionally, the plurality of connecting lines includes a third connecting line and a fourth connecting line, wherein the third connecting line and the fourth connecting line are located on different layers;
[0021] The third connecting line is connected to the compensation part, and the orthographic projection of the fourth connecting line on the substrate overlaps with the orthographic projection of the compensation part connected to the third connecting line on the substrate.
[0022] Optionally, the plurality of connecting lines includes a third connecting line and a fourth connecting line, wherein the third connecting line and the fourth connecting line are located on different layers;
[0023] The third connecting line is connected to the compensation part, and the orthographic projection of the fourth connecting line on the substrate is offset from the orthographic projection of the compensation part connected to the third connecting line on the substrate.
[0024] Optionally, the connecting line includes a first sub-connecting line and a second sub-connecting line that are electrically connected, wherein one end of the first sub-connecting line is electrically connected to the light-emitting device, the other end is electrically connected to one end of the second sub-connecting line, and the other end of the second sub-connecting line is electrically connected to the pixel driving circuit.
[0025] The first sub-connecting line extends along the first direction, and multiple first sub-connecting lines are arranged along the second direction. The compensation part is connected to the second sub-connecting line, and the compensation part and the first sub-connecting line are arranged sequentially in the second direction. The angle between the second direction and the first direction is greater than 0 degrees and less than or equal to 90 degrees.
[0026] Optionally, the plurality of connecting lines further includes a fifth connecting line, wherein the third connecting line, the fourth connecting line and the fifth connecting line are located on different layers, and the third connecting line, the fourth connecting line and the fifth connecting line are stacked in a direction away from the substrate;
[0027] The orthographic projection of at least a portion of the line segment extending along the first direction in the third connecting line on the substrate overlaps with the orthographic projection of at least a portion of the line segment extending along the first direction in the fourth connecting line on the substrate, and the orthographic projection of at least a portion of the line segment extending along the first direction in the fourth connecting line on the substrate does not overlap with the orthographic projection of at least a portion of the line segment extending along the first direction in the fifth connecting line on the substrate.
[0028] Optionally, the display panel further includes a planarization layer having a plurality of planarization vias;
[0029] The orthographic projection of the compensation portion on the substrate overlaps with the orthographic projection of at least one of the plurality of planarization vias on the substrate.
[0030] Optionally, the linear compensation portion includes a first linear compensation portion and a second linear compensation portion, wherein the first linear compensation portion is located on the side of the second linear compensation portion near the center of the light-transmitting display area, and the width of the first linear compensation portion is smaller than the width of the second linear compensation portion.
[0031] Optionally, the absolute value of the difference between the sum of the capacitance value of the compensation section and the capacitance value of the first connecting line and the capacitance value of the second connecting line is less than a preset value.
[0032] Optionally, the plurality of light-emitting devices includes at least one row of light-emitting devices, and the row of light-emitting devices includes a plurality of groups of light-emitting devices, wherein the first direction is parallel to the row direction of the row of light-emitting devices.
[0033] Optionally, the light-emitting device group includes at least two first light-emitting devices and at least two second light-emitting devices;
[0034] In the plurality of light-emitting device groups of the row of light-emitting devices, the pixel driving circuit electrically connected to the first light-emitting device is located on the side of the pixel driving circuit electrically connected to the second light-emitting device closer to the light-transmitting display area.
[0035] Optionally, the first light-emitting device and the second light-emitting device are arranged alternately in the first direction.
[0036] Optionally, the plurality of light-emitting device groups include a first light-emitting device group and a second light-emitting device group, the plurality of first connecting lines are electrically connected to the plurality of light-emitting devices and the plurality of first pixel driving circuits in the first light-emitting device group, and the plurality of second connecting lines are electrically connected to the plurality of light-emitting devices and the plurality of second pixel driving circuits in the second light-emitting device group.
[0037] The length of the first connecting line is less than the length of the second connecting line, and the compensation part is connected to at least a portion of the first connecting line;
[0038] The first light-emitting device group includes a first-color light-emitting device, a second-color light-emitting device, and a third-color light-emitting device, and at least a portion of the connecting lines of the first-color light-emitting device and the second-color light-emitting device are connected to the compensation unit.
[0039] Optionally, the light-transmitting display area has two light-transmitting partitions arranged along the first direction, and the light-emitting device in either of the two light-transmitting partitions is electrically connected to the pixel driving circuit in the conventional display area adjacent to the light-transmitting partition.
[0040] Optionally, the area of the compensation portion connected by the first connecting line is positively correlated with the first difference, which is the difference between the length of the first connecting line and the length of the second connecting line.
[0041] Optionally, the connecting wire includes a metal connecting wire;
[0042] The metal connecting wire is electrically connected to the first light-emitting device in the row of light-emitting devices that is closest to the edge of the light-transmitting display area.
[0043] Optionally, the pixel driving circuit includes a thin-film transistor, the thin-film transistor including a source and a drain, and the metal interconnection line having the same layer structure as the source and the drain.
[0044] Optionally, the display panel further includes: a plurality of conventional pixel driving circuits and a plurality of conventional light-emitting devices located in the conventional display area, wherein the plurality of conventional pixel driving circuits and the plurality of conventional light-emitting devices are electrically connected in a one-to-one correspondence in the conventional display area;
[0045] The arrangement density of the multiple conventional light-emitting devices located in the conventional display area is the same as the arrangement density of the multiple light-emitting devices located in the light-transmitting display area.
[0046] Optionally, the first light-emitting device includes a green light-emitting device, and the at least two second light-emitting devices include a blue light-emitting device and a red light-emitting device.
[0047] Optionally, the compensation unit is connected to a connection line that electrically connects at least a portion of the blue light-emitting device and the red light-emitting device.
[0048] According to another aspect of this application, a display device is provided, the display device comprising: a photosensor and the aforementioned display panel, wherein the orthographic projection of the light-receiving surface of the photosensor onto the substrate of the display panel is located within the light-transmitting display area. Attached Figure Description
[0049] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0050] Figure 1 This is a schematic diagram of the structure of a display panel;
[0051] Figure 2 yes Figure 1 A partial structural diagram of the display panel is shown;
[0052] Figure 3 yes Figure 2 The diagram shows a cross-sectional view of the display panel along line A1-A2.
[0053] Figure 4 yes Figure 2 The diagram shows a partial connection structure of 10B in the display panel.
[0054] Figure 5 This is a schematic diagram of the connection structure between a light-emitting device and a pixel driving circuit;
[0055] Figure 6 This is a schematic diagram of the connection structure between another light-emitting device and a pixel driving circuit;
[0056] Figure 7 This is a top view of a display panel provided in an embodiment of this application;
[0057] Figure 8 yes Figure 7 A schematic diagram of a connection line between the light-transmitting display area and the conventional display area of a display panel is shown.
[0058] Figure 9 This is a schematic diagram of the structure of a compensation unit provided in an embodiment of this application;
[0059] Figure 10 This is a schematic diagram of another compensation unit structure provided in an embodiment of this application;
[0060] Figure 11 This is a schematic diagram of another compensation unit structure provided in an embodiment of this application;
[0061] Figure 12 This is a schematic diagram of another compensation unit structure provided in an embodiment of this application;
[0062] Figure 13 This is a schematic diagram of the connection lines between the light-transmitting display area and the conventional display area of another display panel provided in this application embodiment;
[0063] Figure 14 yes Figure 13 A partial structural diagram of 20B is shown in the circuit connection diagram.
[0064] Figure 15 yes Figure 14 The diagram shows the structure of the three-layer wiring.
[0065] Figure 16 This is a schematic diagram of another compensation unit structure provided in an embodiment of this application;
[0066] Figure 17 This is a schematic diagram of another compensation unit structure provided in an embodiment of this application;
[0067] Figure 18 This is a schematic diagram of another compensation unit structure provided in an embodiment of this application;
[0068] Figure 19 yes Figure 8 A partial structural diagram of the display panel is shown;
[0069] Figure 20 This is a schematic diagram of another compensation unit structure provided in an embodiment of this application;
[0070] Figure 21 This is a schematic diagram of another three-layer wiring structure provided in an embodiment of this application;
[0071] Figure 22 yes Figure 21 The diagram shows the layered structure of the three-layer wiring.
[0072] Figure 23 This is a schematic diagram of another compensation unit structure provided in an embodiment of this application;
[0073] Figure 24 This is a schematic diagram of another compensation unit structure provided in an embodiment of this application;
[0074] Figure 25 This is a schematic diagram of another three-layer wiring structure provided in an embodiment of this application;
[0075] Figure 26 This is a schematic diagram of a pixel driving circuit provided in an embodiment of this application;
[0076] Figure 27 This is a circuit diagram of a pixel driving circuit provided in an embodiment of this application.
[0077] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation
[0078] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.
[0079] To increase the screen-to-body ratio of a display device, the display panel can be designed as a partially transparent display panel. For example, this display panel has a transparent display area and a regular display area located outside the transparent display area. This transparent display area can also be called an under-display camera (FDC) area. Both the regular display area and the transparent display area contain light-emitting devices, enabling both areas to display images.
[0080] During the manufacturing process of a display panel, the pixel driving circuits arranged in an array in the conventional display area can be compressed in the row direction. This allows for the arrangement of more pixel driving circuits in the conventional display area. The additional pixel driving circuits can be electrically connected to the light-emitting devices in the light-transmitting display area to drive the light-emitting devices in the light-transmitting display area.
[0081] Please refer to Figure 1 , Figure 2 and Figure 3 , Figure 1 This is a schematic diagram of the structure of a display panel. Figure 2 yes Figure 1 The diagram shows a partial structural schematic of the display panel 10A. Figure 3 yes Figure 2 The diagram shown is a cross-sectional view of the display panel along line A1-A2. Figure 4 yes Figure 2 The diagram shows a connection structure of a portion 10B in the display panel. The display panel includes a substrate 11, which may have a light-transmitting display area 111 and a non-light-transmitting conventional display area 112.
[0082] The light-transmitting display area 111 contains multiple light-emitting devices 1111, and the conventional display area 112 may contain a pixel driving circuit 1121 electrically connected to the light-emitting devices 1111 in the light-transmitting display area 111. The multiple pixel driving circuits 1121 may be located on both sides of the light-transmitting display area 111, so that the length of the connecting line between the light-emitting devices 1111 in the light-transmitting display area 111 and the electrically connected pixel driving circuit 1121 is relatively short.
[0083] Each light-emitting device 1111 located in the light-transmitting display area 111 and the corresponding pixel driving circuit 1121 located in the conventional display area 112 in the same row form a first pixel unit. The conventional display area 112 not only includes multiple pixel driving circuits 1121, but also multiple second pixel units. The 10A pixel unit in the conventional display area 112 includes a light-emitting device 1122 and a pixel driving circuit 1123.
[0084] For example, such as Figure 3 As shown, in the row direction of the pixel driving circuit 1121, multiple pixel driving circuits 1123 are arranged at intervals between any two pixel driving circuits 1121 in a row of pixel driving circuits 1121.
[0085] This can be understood as follows: during the manufacturing process of the display panel, by reducing the size of the pixel driving circuit in the row direction of the conventional display area 112 while keeping the size of the pixel driving circuit in the column direction unchanged, it is equivalent to compressing the size of the pixel driving circuits 1121 and 1123 in the row direction without changing the structure and position of the light-emitting device 1122. This allows for more columns of pixel driving circuits to be arranged per unit area on the substrate. The light-emitting device 1122 located in the conventional display area 112 can also be connected to the corresponding pixel driving circuit 1123 located in the conventional display area 112, thereby ensuring that the light-emitting device 1122 in its original position can be displayed normally. In the compressed pixel circuit, the pixel driving circuits not connected to the light-emitting device 1122 can be electrically connected to the light-emitting device 1111 located in the light-transmitting display area 111 via the connecting line 13.
[0086] like Figure 4 As shown, the multiple light-emitting devices 1111 located in the light-transmitting display area 111 can have various types of light-emitting devices 1111, and the colors of the various light-emitting devices 1111 can be different. During the process of electrically connecting the multiple light-emitting devices 1111 to the pixel driving circuit 1121 located in the conventional display area 112, due to the different start-up voltages of different types, there may be a certain type of light-emitting device, which can be called the first light-emitting device 1111x, which cannot start or has an excessively long start-up time due to the long length of the connecting line 13. Therefore, the first light-emitting devices 1111x of this type can be electrically connected to the pixel driving circuit 1121 that is closer to the light-transmitting display area 112 firstly, so that the first light-emitting devices 1111x of this type are easier to start. Then, the other types of second light-emitting devices 1111y are electrically connected to the pixel driving circuit 1121 that is farther away from the light-transmitting display area 112 in sequence.
[0087] Specifically, when the pixel driving circuit sends a driving current to drive the light-emitting device, it first charges the connecting wires and then starts the light-emitting device. That is, the starting of the light-emitting device is not instantaneous, but involves a startup process. For example, this startup time can refer to the duration between the moment the pixel driving circuit sends the driving current and the moment the light-emitting device lights up.
[0088] Figure 5 This is a schematic diagram of the connection structure between a light-emitting device and a pixel driving circuit. Figure 6 This is a schematic diagram of another connection structure between a light-emitting device and a pixel driving circuit. The position of the light-transmitting display area 111 on the substrate is not fixed. When the light-transmitting display area 111 is located at different positions on the substrate, the distance between the light-emitting device 1111 in the light-transmitting display area 111 and the electrically connected pixel driving circuit 1121 will also be different. For example, as shown... Figure 2 and Figure 5 As shown, the pixel driving circuits 1121 located on both sides of the light-transmitting display area 111 include a first pixel driving circuit 1121a and a second pixel driving circuit 1121b. The positions of the first pixel driving circuit 1121a and the second pixel driving circuit 1121b are symmetrical with respect to the position of the light-transmitting display area 111. It should be noted that "symmetry" in this embodiment can include the case where the two pixel driving circuits (first pixel driving circuit 1121a and second pixel driving circuit 1121b) are at the same distance from the light-transmitting display area 111, and can also include the case where the two pixel driving circuits 1121 are in the same column. That is, as shown... Figure 5As shown, in cases where both pixel driving circuits (first pixel driving circuit 1121a and second pixel driving circuit 1121b) are first-column pixel driving circuits along the direction away from the center of the light-transmitting display area 111, or both are second-column pixel driving circuits along the direction away from the light-transmitting display area 111, the two pixel driving circuits 1121 can also be considered as "symmetrical" pixel driving circuits 1121. Figure 5 In the diagram, the distance between the first pixel driving circuit 1121a and the light-transmitting display area 111 is L1, and the distance between the second pixel driving circuit 1121b and the light-transmitting display area 111 is L2, where L1 equals L2. The first pixel driving circuit 1121a and the second pixel driving circuit 1121b are electrically connected to the same type of light-emitting device 1111. However, because the various light-emitting devices 1111 in the light-transmitting display area 111 are arranged in a certain order, the distance L3 between the light-emitting device 1111 electrically connected to the first pixel driving circuit 1121a and the edge of the light-transmitting display area 111 is greater than the distance L4 between the light-emitting device 1111 electrically connected to the second pixel driving circuit 1121b and the edge of the light-transmitting display area 111. This results in different lengths of the connecting lines 13 electrically connected to the first pixel driving circuit 1121a and the second pixel driving circuit 1121b.
[0089] Alternatively, as shown in the figure, the distance between the light-transmitting display area 111 and the pixel driving circuits 1121 located on both sides of the light-transmitting display area is inconsistent. That is, the light-transmitting display area 111 is closer to the pixel driving circuit 1121 located on the left side of the light-transmitting display area 111 and farther from the pixel driving circuit located on the right side of the light-transmitting display area 111. The light-transmitting display area 111 may have a symmetry axis S1, the extension direction of which may be perpendicular to the extension direction of multiple connecting lines 13. The light-transmitting display area 111 has a first side located on one side of the symmetry axis S1 and a second side located on the other side of the symmetry axis S1, the first side being the left side and the second side being the right side. For example, the pixel driving circuit 1121 includes a third pixel driving circuit 1121c located in the third column on the left side of the light-transmitting display area and a fourth pixel driving circuit 1121d located in the third column on the right side of the light-transmitting display area. The third pixel driving circuit 1121c and the fourth pixel driving circuit 1121d are electrically connected to the same type of light-emitting device 1111. Figure 6In the above, the distance between the third pixel driving circuit 1121c and the light-transmitting display area 111 is L5, and the distance between the fourth pixel driving circuit 1121d and the light-transmitting display area 111 is L6. L5 is less than L6. Furthermore, since the various light-emitting devices 1111 in the light-transmitting display area 111 are arranged in a certain order, the distance L7 between the light-emitting device 1111 electrically connected to the third pixel driving circuit 1121c and the edge of the light-transmitting display area 111 is closer than the distance L8 between the light-emitting device 1111 electrically connected to the edge of the light-transmitting display area 111. As a result, the lengths of the connecting lines 13 electrically connected to the third pixel driving circuit 1121c and the fourth pixel driving circuit 1121d are different.
[0090] As shown in Table 1 below, Table 1 is... Figure 6 The table shows the correspondence between the row of light-emitting devices 1111 in the light-transmitting display area 111 and the pixel driving circuit 1121 in the conventional display area 112. For example, the row of light-emitting devices 1111 in the light-transmitting display area 111 has 20 pixels, each pixel including 4 light-emitting devices. Each pixel's 4 light-emitting devices include two first light-emitting devices 1111x and two second light-emitting devices 1111y. The first light-emitting devices 1111x may include a green light-emitting device G, and the second light-emitting devices 1111y may include a blue light-emitting device B and a red light-emitting device R. Therefore, it can be assumed that 40 light-emitting devices in the row are electrically connected to the pixel driving circuit 1121 in the conventional display area 112 located to the left of the light-transmitting display area 111, and the other 40 light-emitting devices in the row are electrically connected to the pixel driving circuit 1121 in the conventional display area 112 located to the right of the light-transmitting display area 111. The pixel driving circuits 1211 in columns 1 to 20 of the conventional display area 112, which are close to the light-transmitting display area 111, are all electrically connected to the first light-emitting device 1111x, and columns 21 to 40 are electrically connected to the second light-emitting device 1111y.
[0091] Table 1
[0092]
[0093]
[0094] As shown in Table 1, in the pixel driving circuits of columns 1 to 20 of the first light-emitting device 1111x, the connecting line is electrically connected to the pixel driving circuit in the conventional display area located to the left of the light-transmitting display area, and the length of the connecting line is the first length. The connecting line is electrically connected to the pixel driving circuit in the conventional display area located to the right of the light-transmitting display area, and the length of the connecting line is the second length. The first length can be greater than the second length, and the difference between the first length and the second length can be about 10 micrometers. In the pixel driving circuits of columns 21 to 40 of the second light-emitting device 1111y, the connecting line is electrically connected to the pixel driving circuit in the conventional display area located to the left of the light-transmitting display area, and the length of the connecting line is the third length. The connecting line is electrically connected to the pixel driving circuit in the conventional display area located to the right of the light-transmitting display area, and the length of the connecting line is the fourth length. The third length can be less than the fourth length, and the difference between the third length and the fourth length can be about 50 micrometers.
[0095] The differences between the multiple connecting lines of the first light-emitting device 1111x are smaller than the differences between the multiple connecting lines of the second light-emitting device 1111y, for example, Figure 6 The edge of the light-transmitting display area 111 is relatively close to the pixel driving circuit in the conventional display area 112 located to the left of the light-transmitting display area 111. This situation can be called the light-transmitting display area 111 being offset to the left. Since the first length of the multiple connecting lines 13 electrically connected to the first light-emitting device 1111x is greater than the second length, and the third length of the multiple connecting lines 13 electrically connected to the second light-emitting device 1111y can be less than the fourth length, the offset of the light-transmitting display area 111 to the left can reduce the difference between the connecting lines 13 electrically connected to the first light-emitting device 1111x located on both sides of the light-transmitting display area 111. At the same time, it also exacerbates the difference between the connecting lines 13 electrically connected to the second light-emitting device 1111y located on both sides of the light-transmitting display area.
[0096] It should be noted that, Figure 5 , Figure 6 And the number of columns for pixel driving circuits in Table 1 is relative to... Figure 5 and Figure 6 The row of light-emitting devices electrically connected to the column of light-emitting devices shown in the figure is as follows: Figure 5 The first column pixel driving circuit in the image is not the first column pixel driving circuit in the pixel driving circuit that is electrically connected to other row light-emitting devices in the light-transmitting display area. This is because the position of a row of light-emitting devices in the light-transmitting display area is... Figure 5 and Figure 6 When the positions of the light-emitting devices in one row are different (i.e., the light-emitting devices in another row), the number of columns of the pixel driving circuits electrically connected to the other row of light-emitting devices will change, and the position of the first column of pixel driving circuits will also change.
[0097] Because the lengths of the connecting lines 13 are different, the resistance and capacitance loads on the connecting lines 13 are different. When the driving current from the pixel driving circuit 1121 is to drive the light-emitting device 1111, the connecting lines 13 will be charged first before the light-emitting device 1111 can be activated. This results in inconsistent charging and discharging speeds for the same type of light-emitting device 1111 electrically connected to the first pixel driving circuit 1121a and the second pixel driving circuit 1121b. For example, the length of the connecting line 13 electrically connected to the first pixel driving circuit 1121a is shorter than the length of the connecting line 13 electrically connected to the second pixel driving circuit 1121b. Therefore, when the display panel 10 provides the same signal to the connection line 13, the charging or discharging speed of the light-emitting device 1111 electrically connected to the first pixel driving circuit 1121a may be slower than that of the light-emitting device 1111 electrically connected to the second pixel driving circuit 1121b. This results in a large difference in the lighting time between the light-emitting device 1111 electrically connected to the first pixel driving circuit 1121a and the light-emitting device 1111 electrically connected to the second pixel driving circuit 1121b. Consequently, the brightness of the light-emitting device 1111 electrically connected to the first pixel driving circuit 1121a is different from that of the light-emitting device 1111 electrically connected to the second pixel driving circuit 1121b, leading to poor display uniformity of the light-transmitting display area 111.
[0098] This application provides a display panel and a display device that can solve the problems mentioned above.
[0099] Figure 7 This is a top view of a display panel provided in an embodiment of this application. Figure 8 yes Figure 7 The diagram shows a connection diagram of the light-transmitting display area and the regular display area of the display panel. Please refer to it. Figure 7 and Figure 8 The display panel 20 may include: a substrate 21, multiple light-emitting devices 22, multiple pixel driving circuits 23, multiple connecting lines 24, and multiple compensation parts 25.
[0100] The substrate 21 may have a light-transmitting display area 211 and a conventional display area 212 surrounding the light-transmitting display area 211. For example, the conventional display area 212 may surround the light-transmitting display area 211. That is, the light-transmitting display area 211 can be surrounded by the conventional display area 212. The location of the light-transmitting display area 211 can be determined according to requirements. For example, the light-transmitting display area 211 may be located at the top center of the substrate 21. Hardware such as a photosensor (e.g., a camera) may be disposed in the light-transmitting display area 211 of the display panel. The light-transmitting display area 211 can be, for example... Figure 4 The circle shown can also be a square, hexagon, trapezoid, or other shapes, and this application does not limit this.
[0101] Multiple light-emitting devices 22 can be located in the light-transmitting display area 211, and multiple light-emitting devices 22 can be arranged along the first direction.
[0102] Multiple pixel driving circuits 23 can be located in the conventional display area 212, and multiple connecting lines 24 and multiple compensation parts 25 can be located on the substrate 21.
[0103] Multiple pixel driving circuits 23 located in the conventional display area 212 can be electrically connected to at least multiple light-emitting devices 22 located in the light-transmitting display area 211. This improves the light transmittance of the light-transmitting display area 211, meaning that only the light-emitting devices 22 can be placed in the light-transmitting display area 211, while the pixel driving circuits 23 driving the light-emitting devices 22 in the conventional display area 212 are located there. The pixel driving circuits 23 and the light-emitting devices 22 can be electrically connected one-to-one via connecting lines 24, meaning that the light transmittance of the light-transmitting display area 211 can be improved by separately configuring the light-emitting devices 22 and the pixel driving circuits 23.
[0104] Furthermore, the plurality of pixel driving circuits 23 include at least a first pixel driving circuit 231 and a second pixel driving circuit 232, with the first pixel driving circuit 231 and the second pixel driving circuit 232 located on both sides of the light-transmitting display area 211 in the first direction f1, respectively.
[0105] The first pixel driving circuit 231 and the second pixel driving circuit 232 are electrically connected to the light-emitting device 22 via connecting lines 24. The connecting lines 24 may include a first connecting line 241 and a second connecting line 242, and the length of the first connecting line 241 electrically connected to the first pixel driving circuit 231 is less than the length of the second connecting line 242 electrically connected to the second pixel driving circuit 232.
[0106] For example, such as Figure 8 As shown, the plurality of light-emitting devices 22 may include a plurality of pixel driving circuit groups 22a, and one pixel driving circuit group 22a may be one pixel. A first pixel driving circuit 231 may be electrically connected to one light-emitting device 22 in one light-emitting device group 22a, and a second pixel driving circuit 232 may be electrically connected to one light-emitting device 22 in another light-emitting device group 22a, such that the difference in length of the connecting line 24 connecting the two second light-emitting devices 22 is small. Since the distances between the two light-emitting devices 22 and the edge of the light-transmitting display area 211 are different, the length of the connecting line 24 electrically connected by the first pixel driving circuit 231 is less than the length of the connecting line 24 electrically connected by the second pixel driving circuit 232.
[0107] It should be noted that the first pixel driving circuit 231 and the second pixel driving circuit 232 in the embodiments of this application do not specifically refer to the pixel driving circuit 23 located on the fixed side of the light-transmitting display area 211. Since multiple pixel driving circuits 23 located on the same side can connect to different types of light-emitting devices, there are instances where the length of the connecting line 24 electrically connected in multiple pixel driving circuits 23 located on one side is less than the length of the connecting line 24 electrically connected in the pixel driving circuit 23 located at the symmetrical position, and there are also instances where the length of the connecting line 24 electrically connected in multiple pixel driving circuits 23 located on one side is less than the length of the connecting line 24 electrically connected in the pixel driving circuit 23 located at the symmetrical position.
[0108] The compensation unit 25 is connected to the first connecting line 241, and the compensation unit 25 can be electrically connected to the first connecting line 241. That is, the compensation unit 25 is electrically connected to the first connecting line 241, which can be relatively short. The first connecting line 241 can be electrically connected to the first pixel driving circuit 231. The compensation unit 25 can be used to compensate for the capacitance of the first connecting line 241, so that the difference between the capacitance of the first connecting line 241 electrically connected to the first pixel driving circuit 231 and the capacitance of the second connecting line 242 electrically connected to the second pixel driving circuit 232 is smaller. This makes the startup time of the light-emitting device 22 electrically connected to the first pixel driving circuit 231 the same as the startup time of the light-emitting device 22 electrically connected to the second pixel driving circuit 232. Consequently, the brightness of the light-emitting device 22 electrically connected to the first pixel driving circuit 231 is the same as the brightness of the light-emitting device 22 electrically connected to the second pixel driving circuit 232, thereby improving the display uniformity of the light-transmitting display area 111. Here, the first connecting line 241 and the second connecting line 242 are two of the multiple connecting lines 24.
[0109] It should be noted that, Figure 8 To facilitate the distinction between the light-transmitting display area 211 and the conventional display area 212, the light-emitting devices at the boundary between the light-transmitting display area 211 and the conventional display area 212 are not fully shown. In the actual display panel, there may be multiple light-emitting devices at the boundary between the light-transmitting display area 211 and the conventional display area 212, and these multiple light-emitting devices may belong to either the light-transmitting display area 211 or the conventional display area 212.
[0110] Figure 8 This document only lists the connection methods of some of the multiple light-emitting devices 22 to the pixel driving circuit 23. The connection methods between other light-emitting devices 22 and other pixel driving circuits 23 can be the same.
[0111] In this embodiment, the first light-emitting device 221 and the second light-emitting device 222 can be organic light-emitting diodes (OLEDs). They can include at least an anode, a light-emitting layer, and a cathode stacked along a direction perpendicular to and away from the substrate 21.
[0112] The anode in the light-emitting device 22 can be electrically connected to the pixel driving circuit 23 via the connecting line 24. To further improve the light transmittance of the light-transmitting display area 211, the light-emitting device 22 in the light-transmitting display area 211 and the pixel driving circuit 23 in the conventional display area 212 can be connected by the connecting line 24 made of a light-transmitting conductive material. This light-transmitting conductive material can be indium tin oxide (ITO).
[0113] In summary, this application provides a display panel including: multiple pixel driving circuits, multiple connecting lines, and multiple compensation units. The length of the first connecting line electrically connected to the first pixel driving circuit is shorter than the length of the second connecting line electrically connected to the second pixel driving circuit. By electrically connecting the compensation units to the first connecting lines, the capacitance of the first connecting lines is compensated, thereby reducing the difference between the capacitance of the first and second connecting lines. This minimizes the difference in startup time between the light-emitting devices electrically connected to the first and second pixel driving circuits, thus improving the display uniformity of the light-transmitting display area.
[0114] Optionally, in this embodiment, a pixel circuit can be configured to drive multiple light-emitting devices, and the multiple light-emitting devices can be of the same color. Alternatively, multiple pixel driving circuits can drive a single light-emitting device. Or, multiple pixel driving circuits can drive multiple light-emitting devices in a one-to-one correspondence.
[0115] Optionally, the absolute value of the difference between the sum of the capacitance values of the compensation unit 25 and the first connecting line 241 and the capacitance value of the second connecting line 242 is less than a preset value, which can be 2.8 microfarads (μF). Within this range, the difference between the startup time of the light-emitting device 22 electrically connected to the first connecting line 241 and the startup time of the light-emitting device 22 electrically connected to the second connecting line 242 is small, and the impact on the display effect of the light-transmitting display area 211 is small. It should be noted that the size of this preset value can be adjusted according to the design requirements of the display panel, and this embodiment does not limit it.
[0116] That is, when the capacitance difference between the first connecting line 241 and the second connecting line 242 is within a preset value, the first connecting line 241 may not be electrically connected to the compensation part 25, so as to simplify the manufacturing process of the display panel 20.
[0117] Optionally, such as Figure 8 As shown, the plurality of light-emitting devices 22 may include at least one row of light-emitting devices 22, and one row of light-emitting devices 22 may include a plurality of light-emitting device groups 22a. Each light-emitting device group 22a may include a plurality of light-emitting devices 22, and the first direction f1 is parallel to the row direction of the row of light-emitting devices 22.
[0118] Optionally, such as Figure 8 As shown, the plurality of pixel driving circuits 23 include multiple columns of pixel driving circuits 23 arranged on the substrate. The multiple columns of pixel driving circuits 23 are arranged along a first direction f1. Each column of pixel driving circuits 23 includes a plurality of pixel driving circuits 23 arranged along a second direction f2. The angle between the second direction f2 and the first direction f1 is greater than 0 degrees and less than or equal to 90 degrees. For example, the angle between the second direction f2 and the first direction f1 is 90 degrees.
[0119] The first pixel driving circuit 231 is located in the nth column of pixel driving circuits 23 on the first side of the light-transmitting display area 211, and the second pixel driving circuit 232 is located in the nth column of pixel driving circuits 23 on the second side of the light-transmitting display area 211. The first side and the second side are the two sides of the light-transmitting display area 211 in the first direction f1, and n is an integer greater than or equal to 1.
[0120] For example, the first pixel driving circuit 231 is located in the first column of pixel driving circuits 23 on the first side of the light-transmitting display area 211, and the second pixel driving circuit 232 is located in the first column of pixel driving circuits 23 on the second side of the light-transmitting display area 211. The light-emitting devices 22 electrically connected to the first pixel driving circuit 231 and the second pixel driving circuit 232 belong to two light-emitting device groups 22a respectively. The distance between the first pixel driving circuit 231 and the edge of the light-transmitting display area 211 and the distance between the second pixel driving circuit 232 and the edge of the light-transmitting display area 211 can be the same or different. This application embodiment does not limit this.
[0121] Optionally, such as Figure 9 As shown, Figure 9This is a schematic diagram of a compensation section provided in an embodiment of this application. The compensation section 25 may include a linear compensation section 251, which may be located in the conventional display area 212. The linear compensation section 251 may include a straight compensation section 2512 or a curved compensation section 2511. Both the straight compensation section 2512 and the curved compensation section 2511 may be electrically connected to the connecting line 24 electrically connected to the first pixel driving circuit 231. The linear compensation section 2512 or the curved compensation section 2511 may be located in the blank area of the conventional display area 212 where no wiring or other devices are provided. The curved compensation section 2511 may have a larger area than the straight compensation section, which can further increase the capacitance of the connecting line 24 electrically connected to the first pixel driving circuit 231, so that the difference between the capacitance of the connecting line 24 electrically connected to the first pixel driving circuit 231 and the capacitance of the connecting line 24 electrically connected to the second pixel driving circuit 232 is smaller, thereby improving the display uniformity of the light-transmitting display area 111.
[0122] Optionally, Figure 10 This is a schematic diagram of another compensation part provided in an embodiment of this application. The shape of the linear compensation part 251 may include at least one of a straight line, an S-shaped winding line, a spiral winding line, and a broken line. The shape of the linear compensation part 251 may also include other shapes such as a Z-shaped winding line. The linear compensation part 251 may be located at the end of the first connecting line 241 away from the light-transmitting display area 111. The end of the first connecting line 241 away from the light-transmitting display area 111 may be electrically connected to the first pixel driving circuit 231 located in the conventional display area 211. The end of the linear compensation part 251 close to the light-transmitting display area 111 may be connected to the first connecting line 241. That is, it can be considered that the first connecting line 241 extends a certain distance away from the light-transmitting display area 111 at the connection point with the first pixel driving circuit 231. This extended portion can be the linear compensation part 251.
[0123] Optionally, such as Figure 11 As shown, Figure 11 This is a schematic diagram of another compensation section provided in an embodiment of this application. The compensation section 25 may include a block-shaped compensation section 252, which may be located in the conventional display area 212. The block-shaped compensation section 252 may be electrically connected to the connecting line 24 electrically connected to the first pixel driving circuit 231. The block-shaped compensation section 252 may be located in a blank area in the conventional display area 212 where no wiring or other devices are provided. Compared with the linear compensation section 251, the block-shaped compensation section 252 may have a larger area, which can further increase the capacitance of the connecting line 24 electrically connected to the first pixel driving circuit 231, so that the difference between the capacitance of the connecting line 24 electrically connected to the first pixel driving circuit 231 and the capacitance of the connecting line 24 electrically connected to the second pixel driving circuit 232 is smaller, thereby improving the display uniformity of the light-transmitting display area 111.
[0124] Optionally, the shape of the block compensation part 252 includes at least one of rectangle, triangle, rhombus, circle and hexagon, and the shape of the block compensation part 252 may also include other shapes such as trapezoid.
[0125] Optionally, such as Figure 12 As shown, Figure 12 This is a schematic diagram of another compensation section provided in an embodiment of this application. The compensation section 25 may include a linear compensation section 251 and a block compensation section 252, which are located in the conventional display area 212. In this way, the flexibility of setting the compensation section 25 can be improved, so as to make reasonable use of the blank area in the conventional display area 212.
[0126] Optionally, such as Figure 12 As shown, one end of the linear compensation portion 251 is electrically connected to the first connecting line 231, and the other end of the linear compensation portion 251 is electrically connected to the block compensation portion 252. The linear compensation portion 251 has high flexibility in extending on the substrate and can extend to a region far from one end of the first connecting line 231. At the same time, the block compensation portion 252 has a large area. Thus, the flexibility of the position of the compensation portion 25 can be improved while the area of the compensation portion 25 is made larger.
[0127] Optionally, the connecting line 24 can be in the same layer as the compensation part 25, the material of the connecting line 24 can be the same as that of the compensation part 25, and the compensation part 25 and the connecting line 24 can be manufactured in the same patterning process to simplify the manufacturing steps of the display panel 20. The compensation part 25 can be located at the end of the first connecting line 231 away from the light-transmitting display area 111, so that the capacitance of the first connecting line 231 can be compensated without affecting the wiring space of multiple connecting lines 231.
[0128] Optionally, such as Figure 8 As shown, each light-emitting device group 22a may include at least two first light-emitting devices 221 and at least two second light-emitting devices 222.
[0129] The first light-emitting device 221 and the second light-emitting device 222 can be two different light-emitting devices with different startup difficulties; the startup difficulty of the first light-emitting device 221 is greater than that of the second light-emitting device 222. When the length of the connecting wire 24 electrically connected to the first light-emitting device 221 is the same as the length of the connecting wire 24 electrically connected to the second light-emitting device 222, the startup time of the first light-emitting device 221 is greater than that of the second light-emitting device 222.
[0130] like Figure 8As shown, the first light-emitting device 221 and the second light-emitting device 222 can be arranged alternately in the first direction f1. It should be noted that in this embodiment, multiple light-emitting device groups 22a are located in a row, and the multiple light-emitting devices 22 in each group 22a can be staggered. Furthermore, the connection positions of the multiple light-emitting devices 22 in each group 22a and the connecting line 24 can be located in a row. The first light-emitting device 221 and the second light-emitting device 222 can include light-emitting devices 22 of at least two colors. The alternating arrangement of these two colors of light-emitting devices 22 can make the color of the displayed image in the light-transmitting display area 211 more uniform.
[0131] Optionally, the plurality of light-emitting device groups 22a may include a first light-emitting device group and a second light-emitting device group. Multiple first connecting lines 241 are electrically connected to multiple light-emitting devices 22 and multiple first pixel driving circuits 231 in the first light-emitting device group, and multiple second connecting lines 242 are electrically connected to multiple light-emitting devices 22 and multiple second pixel driving circuits 232 in the second light-emitting device group. The length of the first connecting lines 241 is less than the length of the second connecting lines 242. That is, the length of each of the multiple first connecting lines 241 electrically connected to the multiple light-emitting devices 22 in the first light-emitting device group is less than the length of each of the second connecting lines 242 electrically connected to the multiple light-emitting devices 22 in the second light-emitting device group. The compensation unit 25 may be electrically connected to at least a portion of the first connecting lines 241 to compensate for the capacitance of the portion of the first connecting lines 241 electrically connected to the first light-emitting device group.
[0132] The first light-emitting device group may include a first-color light-emitting device, a second-color light-emitting device, and a third-color light-emitting device, wherein at least a portion of the connecting lines of the first-color light-emitting device and the second-color light-emitting device are electrically connected to the compensation unit, and the connecting lines of the third-color light-emitting device may not be electrically connected to the compensation unit.
[0133] like Figure 13 As shown, Figure 13 This is a schematic diagram of the connection lines between the light-transmitting display area and the conventional display area of another display panel provided in this application embodiment. The distance between the light-transmitting display area 211 and the pixel driving circuit 23 in the conventional display area 212 located to the left of the light-transmitting display area 211 is relatively close. Since the distance between the first light-emitting device 221 and the left edge of the light-transmitting display area 211 is smaller than the distance between the first light-emitting device 221 and the right edge of the light-transmitting display area 211, and the distance between the second light-emitting device 222 and the left edge of the light-transmitting display area 211 is larger than the distance between the second light-emitting device 222 and the right edge of the light-transmitting display area 211, the difference between the connecting lines 24 electrically connected to the first light-emitting device 221 on both sides of the light-transmitting display area 211 is smaller than the difference between the connecting lines 24 electrically connected to the second light-emitting device 222 on both sides of the light-transmitting display area 211.
[0134] Optionally, such as Figure 14 As shown, Figure 14 yes Figure 13 The diagram shows a partial structural diagram of 20B in the circuit connection diagram. The pixel driving circuit 23 electrically connected to the first light-emitting device 221 is located on the side of the pixel driving circuit 23 electrically connected to the second light-emitting device 222, closer to the light-transmitting display area 211. As mentioned above, the first light-emitting device 221 and the second light-emitting device 222 can be two different light-emitting devices with different startup difficulties; the startup difficulty of the first light-emitting device 221 is greater than that of the second light-emitting device 222. When the length of the connecting line 24 electrically connected to the first light-emitting device 221 is the same as the length of the connecting line 24 electrically connected to the second light-emitting device 222, the startup time of the first light-emitting device 221 is greater than that of the second light-emitting device 222. Thus, the pixel driving circuit 23, which is closer to the light-transmitting display area 211, can be electrically connected to the first light-emitting device 221, so that the length of the connecting line 24 electrically connected to the first light-emitting device 221 is shorter, thereby improving the driving efficiency of the first light-emitting device 221 and avoiding excessively long startup times or difficulty in driving the first light-emitting device 221.
[0135] For example, such as Figure 14 As shown, the pixel driving circuit 23 located in the conventional display area 212 can be divided into three groups of pixel driving circuits along the direction away from the light-transmitting display area 212: the first pixel driving circuit group 23A, the second pixel driving circuit group 23B, and the third pixel driving circuit group 23C. The connecting line 24 electrically connected to the first pixel driving circuit group 23A is located in the first structural layer, the connecting line 24 electrically connected to the second pixel driving circuit group 23B is located in the second structural layer, and the connecting line 24 electrically connected to the third pixel driving circuit group 23C is located in the third structural layer. The first structural layer, the second structural layer, and the third structural layer are different film layers in the display panel 20.
[0136] In this way, the routing space of the connecting line 24 can be increased, so that the connecting lines 24 located on different layers can have their own routing space. Compared with the single-layer wiring method, more connecting lines 24 can be arranged in a limited space.
[0137] because Figure 13 The differences between the multiple connecting lines 24 electrically connected to the first light-emitting device 221 in the display panel shown are small. Therefore, the length difference of the multiple connecting lines 24 electrically connected to the first light-emitting device 221 has little impact on the display effect of the light-transmitting display area 211. Therefore, the multiple connecting lines 24 electrically connected to the first light-emitting device 221 do not need to be provided with compensation parts 25. Only the shorter part of the multiple connecting lines 24 electrically connected to the second light-emitting device 222 is compensated.
[0138] like Figure 15 As shown, Figure 15 yes Figure 14 The schematic diagram of the three-layer wiring structure shown includes a pixel driving circuit 23 with an adapter hole 233, through which the pixel driving circuit 23 can be electrically connected to the connecting line 24. Since the pixel driving circuits 23 in the first pixel driving circuit group 23A, which are electrically connected to the first light-emitting device 221, are all electrically connected to the first light-emitting device 221 by the connecting line 24 in the first structural layer 24A, the connecting line 24 in the first structural layer 24A is not connected to the compensation part 25.
[0139] The connecting line 24 in the second structural layer 24B is electrically connected to a portion of the pixel driving circuit 23 in the second pixel driving circuit group 23B, which is electrically connected to the first light-emitting device 221, and another portion of the pixel driving circuit 23 is electrically connected to the second light-emitting device 222. Therefore, a portion of the connecting line 24 in the second structural layer 24B is connected to the compensation part 25.
[0140] The pixel driving circuits 23 in the third pixel driving circuit group 23C, which are electrically connected to the connecting line 24 in the third structural layer 24C, are all electrically connected to the second light-emitting device 222. Therefore, the connecting line 24 in the third structural layer 24C is connected to the compensation part 25.
[0141] like Figure 16 As shown, Figure 16 This is a schematic diagram of another compensation unit provided in an embodiment of this application. Figure 16 A schematic diagram of the wiring structure of multiple connection lines 24 in two structural layers is shown. The multiple connection lines 24 include a third connection line 243 and a fourth connection line 244, which are located on different layers. The third connection line 243 is electrically connected to the compensation part 25. The orthographic projection of the fourth connection line 244 on the substrate 21 is offset from the orthographic projection of the compensation part 25 connected to the third connection line 243 on the substrate 21; that is, the orthographic projection of the fourth connection line 244 on the substrate 21 does not overlap with the orthographic projection of the compensation part 25 connected to the third connection line 243 on the substrate 21.
[0142] Optionally, such as Figure 17 and Figure 18 As shown, Figure 17 This is a schematic diagram of another compensation unit provided in an embodiment of this application. Figure 18 This is a schematic diagram of another compensation unit provided in an embodiment of this application. The multiple connecting lines 24 include a third connecting line 243 and a fourth connecting line 244, which are located on different layers.
[0143] The third connecting line 243 is electrically connected to the compensation section 25, and the orthographic projection of the fourth connecting line 244 on the substrate 21 overlaps with the orthographic projection of the compensation section 25 on the substrate 21. In this way, a parasitic capacitance can be formed between the compensation section 25 and the fourth connecting line 244 to compensate for the capacitance on the fourth connecting line 244.
[0144] Optionally, such as Figure 8 As shown, the light-transmitting display area 211 has two light-transmitting partitions (first light-transmitting partition 2111 and second light-transmitting partition 2112) arranged along the first direction f1. The light-emitting device 22 in either of the two light-transmitting partitions is electrically connected to the pixel driving circuit 23 in the conventional display area 212 adjacent to either light-transmitting partition (first light-transmitting partition 2111 or second light-transmitting partition 2112).
[0145] For example, the second light-transmitting partition 2112 is located to the right of the first light-transmitting partition 2111, and the light-emitting device 22 in the first light-transmitting partition 2111 can be electrically connected to the pixel driving circuit 23 on the left side of the first light-transmitting partition 2111.
[0146] Optionally, the areas of the two light-transmitting zones (first light-transmitting zone 2111 and second light-transmitting zone 2112) are the same. This allows the number of light-emitting devices 22 in the two light-transmitting zones (first light-transmitting zone 2111 and second light-transmitting zone 2112) to be basically the same, thereby making the difference in the overall length of the connecting lines corresponding to the light-emitting devices 22 in the two light-transmitting zones (first light-transmitting zone 2111 and second light-transmitting zone 2112) smaller. This, in turn, makes the brightness of the light-emitting devices 22 in the light-transmitting display area 211 more uniform, thereby improving the display effect of the light-transmitting display area 211.
[0147] It should be noted that the dividing line between the two light-transmitting zones in this embodiment can be the axis of symmetry of the light-transmitting display area 211. The arrangement of multiple connecting lines on the left side of the axis of symmetry of the light-transmitting display area 211 and multiple connecting lines on the right side of the axis of symmetry of the light-transmitting display area 211 is mirrored.
[0148] Optionally, the area of the compensation section 25 electrically connected to the first connecting line 241 is positively correlated with a first difference, which is the difference between the length of the first connecting line 241 and the length of the second connecting line 242. That is, the larger the difference between the length of the first connecting line 241 and the length of the second connecting line 242, the larger the area of the compensation section 25 electrically connected to the first connecting line 241.
[0149] Optionally, such as Figure 19 As shown, Figure 19 yes Figure 8 The schematic diagram of a portion 20A of the display panel shown indicates that the shape of the light-emitting device 22 can be... Figure 5 The circle shown can also be Figure 10 The rectangle shown can also be other shapes such as rhombus and hexagon, and this application embodiment does not limit this. The connecting line 24 may also include a metal connecting line 245, which is electrically connected to the first light-emitting device 221 in the row of light-emitting devices 22 that is closest to the edge of the light-transmitting display area 211. Due to the limited wiring space in the display panel 20, when the wiring space of the three-layer connection line 24 located in the first structural layer, the second structural layer, and the third structural layer is relatively crowded, the light-emitting device 22 closest to the edge of the light-transmitting display area 211 can be electrically connected to the pixel driving circuit 23 located in the conventional display area 212 through the metal connection line 24. This metal connection line 245 can be the fourth layer of wiring. Since the first light-emitting device 221 closest to the edge of the light-transmitting display area 211 is electrically connected to the pixel driving circuit 23 closest to the edge of the light-transmitting display area 211 when connecting the light-emitting device 22 in the light-transmitting display area 211, one end of the metal connection line 245 can be electrically connected to the first light-emitting device 221 closest to the edge of the light-transmitting display area 211 in a row of light-emitting devices 22, and the other end can be electrically connected to the pixel driving circuit 23 closest to the edge of the light-transmitting display area 211 in the conventional display area, so as to avoid the part of the metal connection line 245 located in the conventional display area 212 from affecting other structures on the display panel 20.
[0150] Furthermore, since the first light-emitting device 221 electrically connected by the metal connecting line 245 is close to the edge of the light-transmitting display area 211, the influence of the metal connecting line 245 on the light transmittance of the light-transmitting display area 211 can be ignored. In this way, more light-emitting devices 22 can be set in the light-transmitting display area 211, making the area of the light-transmitting display area 211 larger.
[0151] Optionally, such as Figure 20 As shown, Figure 20 This is a schematic diagram of another compensation section provided in an embodiment of this application. The connecting line 24 includes a first sub-connecting line 2401 and a second sub-connecting line 2402 that are electrically connected. One end of the first sub-connecting line 2401 is electrically connected to the light-emitting device, and the other end is electrically connected to one end of the second sub-connecting line 2402. The other end of the second sub-connecting line 2402 is electrically connected to the pixel driving circuit 23.
[0152] The first sub-connecting line 2401 can extend along the first direction f1, and multiple first sub-connecting lines 2401 can be arranged along the second direction f2. The compensation unit 25 can be electrically connected to the second sub-connecting line 2402, and the compensation unit 25 and the first sub-connecting line 2401 are arranged sequentially in the second direction f2.
[0153] That is, the compensation section 25 and the first sub-connecting line 2401 are offset in the second direction f2, for example, as shown in... Figure 20 As shown, in the second direction f2, the shortest distance D1 between the compensation unit 25 and the adjacent first sub-connecting line 2401 is greater than the shortest distance D2 between the two adjacent first sub-connecting lines 2401. This allows for a larger installation space for the compensation unit 25.
[0154] like Figure 21 and Figure 22 As shown, Figure 21 This is a schematic diagram of another three-layer wiring structure provided in an embodiment of this application. Figure 22 yes Figure 21 The diagram shows a three-layer wiring structure. Multiple connecting lines 24 may include multiple third connecting lines 243 located in the first structural layer 24A. These multiple third connecting lines 243 may not be connected to the compensation section 25.
[0155] The multiple connecting lines 24 may also include multiple fourth connecting lines 244 located in the second structural layer 24B, at least some of the connecting lines of the multiple fourth connecting lines 244 may be connected to the compensation unit 25.
[0156] The multiple connecting lines 24 may also include multiple fifth connecting lines 245 located in the third structural layer 24C, and the multiple fifth connecting lines 245 may be connected to the compensation unit 25.
[0157] The orthographic projection of at least a portion of the line segment extending along the first direction f1 in the third connecting line 243 onto the substrate 21 at least partially overlaps with the orthographic projection of at least a portion of the line segment extending along the first direction f1 in the fourth connecting line 244 onto the substrate 21, and the orthographic projection of at least a portion of the line segment extending along the first direction f1 in the fourth connecting line 244 onto the substrate 21 does not overlap with the orthographic projection of at least a portion of the line segment extending along the first direction f1 in the fifth connecting line 245 onto the substrate 21.
[0158] Since the lengths of the third connecting line 243 and the fourth connecting line 244 are both less than that of the fifth connecting line 245, the third connecting line 243 and the fourth connecting line 244 overlap in the direction perpendicular to the substrate 21. This can increase the parasitic capacitance on the third connecting line 243 and the fourth connecting line 244, so that the difference between the parasitic capacitance on the third connecting line 243 and the fourth connecting line 244 and the parasitic capacitance on the fifth connecting line 245 is smaller. This can further improve the uniformity of the light-emitting devices in the light-transmitting display area corresponding to the three connecting lines.
[0159] like Figure 23 As shown, Figure 23This is a schematic diagram of another compensation section provided in an embodiment of this application. The display panel may further include a planarization layer 28 having a plurality of planarization vias 281. The orthographic projection of the compensation section 25 on the substrate 21 overlaps with the orthographic projection of at least one of the plurality of planarization vias 281 on the substrate 21.
[0160] like Figure 24 As shown, Figure 24 This is a schematic diagram of another compensation part provided in an embodiment of this application. The linear compensation part 251 includes a first linear compensation part 2501 and a second linear compensation part 2502. The first linear compensation part 2501 is located on the side of the second linear compensation part 2502 near the center of the light-transmitting display area 211. The width of the first linear compensation part 2502 is smaller than the width of the second linear compensation part 2502.
[0161] Furthermore, among the multiple compensation sections 25 located in the conventional display area 212, the width of the compensation section 25 is positively correlated with the shortest distance between the compensation section 25 and the center of the light-transmitting display area 211, while the length of the compensation section 25 is negatively correlated with the shortest distance between the compensation section 25 and the center of the light-transmitting display area 211. That is, the closer the compensation section 25 is to the light-transmitting display area 211, the smaller its width and the longer its length. This is because the closer to the light-transmitting display area 211, the more connecting lines 24 there are, the higher the density of the connecting lines 24 per unit area, and the smaller the distance between adjacent connecting lines 24. Therefore, the space required to set the compensation section 25 is smaller. The narrower width of the compensation section 25 helps prevent short circuits between the compensation section and other connecting lines 24.
[0162] like Figure 25 As shown, Figure 25 This is a schematic diagram of another three-layer wiring structure provided in an embodiment of this application. Figure 24 The wiring structure diagram shown can be Figure 13 The schematic diagram of the connection lines between the light-transmitting display area and the conventional display area of the display panel shown illustrates the wiring structure of the connecting line 24 located to the right of the axis of symmetry S1 in the light-transmitting display area 211. The connecting line 24 located to the right of the axis of symmetry S1 may not be connected to the compensation part 25. Multiple connecting lines 24 may be located in the first structural layer 24A, the second structural layer 24B, and the third structural layer 24C, respectively. The first structural layer 24A, the second structural layer 24B, and the third structural layer 24C are different film layers in the display panel.
[0163] Optionally, the pixel driving circuit 23 may include multiple thin-film transistors, each including a source and a drain. The metal interconnect 245 may be in the same layer as the source and drain of the thin-film transistor. The metal interconnect 245 may be fabricated in the same patterning process as the source and drain of the thin-film transistor to simplify the fabrication steps of the display panel 20.
[0164] Please refer to Figure 26 and Figure 27 In one exemplary implementation, such as Figure 26 As shown, Figure 26 This is a schematic diagram of a pixel driving circuit provided in an embodiment of this application. The pixel driving circuit may include a first thin-film transistor T1, a second thin-film transistor T2, a third thin-film transistor T3, a fourth thin-film transistor T4, a fifth thin-film transistor T5, a sixth thin-film transistor T6, a seventh thin-film transistor T7, and a capacitor structure Cst1.
[0165] In this embodiment, the first thin-film transistor T1 can be a first initial thin-film transistor, the second thin-film transistor T2 can be a compensation thin-film transistor, the third thin-film transistor T3 can be a driving thin-film transistor, the fourth thin-film transistor T4 can be a data writing transistor, the fifth thin-film transistor T5 can be an operation control thin-film transistor, the sixth thin-film transistor T6 can be an emission control thin-film transistor, and the seventh thin-film transistor T7 can be a second initial thin-film transistor. It should be noted that T1 to T7 can include low-temperature polycrystalline silicon thin-film transistors (LTPS) and / or oxide thin-film transistors (O-TFTs). T1 to T7 can also be other types of thin-film transistors, and this embodiment is not limited thereto.
[0166] like Figure 27 As shown, Figure 27 This is a circuit diagram of a pixel driving circuit provided in an embodiment of this application. The gate of the third thin-film transistor T3 is connected to the first node N1, the source of the third thin-film transistor T3 is connected to the second node N2, the drain of the third thin-film transistor T3 is connected to the third node N3, and the drain of the sixth thin-film transistor is connected to the fourth node N4.
[0167] The gate of the fourth thin-film transistor T4 is connected to the gate line 201, the source of the fourth thin-film transistor T4 is connected to the data signal line 202, and the drain of the fourth thin-film transistor T4 is connected to the second node N2.
[0168] The gate of the second thin-film transistor T2 is connected to the gate line 201, the source of the second thin-film transistor T2 is connected to the third node N3, and the drain of the second thin-film transistor T2 is connected to the first node N1.
[0169] The gate of the first thin-film transistor T1 is connected to the reset signal line (Reset) 203, the drain of the first thin-film transistor T1 is connected to the first reference signal line (Vinit) 204-1, and the source of the first thin-film transistor T1 is connected to the first node N1.
[0170] The gate of the fifth thin-film transistor T5 and the gate of the sixth thin-film transistor T6 are connected to the light-emitting signal line (EM) 205. The source of the fifth thin-film transistor T5 is connected to the constant voltage high potential (VDD) 206. The drain of the fifth thin-film transistor T5 is connected to the second node N2. The source of the sixth thin-film transistor T6 is connected to the third node N3. The drain of the sixth thin-film transistor T6 is connected to the anode of the light-emitting device (OLED) 207. The cathode of the light-emitting device 207 is connected to the low potential (VSS) 208.
[0171] The gate of the seventh thin-film transistor T7 is connected to the gate line 201, the drain of the seventh thin-film transistor T7 is connected to the second reference signal line 204-2, and the source of the seventh thin-film transistor T7 is connected to the anode of the light-emitting device 207.
[0172] One end of the capacitor structure Cst1 can be connected to the first node N1, and the other end of the capacitor structure Cst1 can be connected to the constant voltage high potential 206.
[0173] The voltage values of the first reference signal line 204-1 and the second reference signal line 204-2 can be different. For example, the voltage values of the first reference signal line 204-1 and the second reference signal line 204-2 may differ by 1V to 5V.
[0174] Alternatively, the first reference signal line 204-1 and the second reference signal line 204-2 can be connected to the same signal input terminal.
[0175] It should be noted that, as in this specification, when using transistors with opposite polarities or when the current direction changes during circuit operation, the functions of the "source" and "drain" may sometimes be interchanged. Therefore, in this specification, the "source" and "drain" may be interchanged. This application does not limit this.
[0176] Optionally, such as Figure 19 As shown, the display panel 20 also includes a plurality of conventional pixel driving circuits 26 and a plurality of conventional light-emitting devices 27 located in the conventional display area 212, wherein the plurality of conventional pixel driving circuits 26 and the plurality of conventional light-emitting devices 27 are electrically connected in a one-to-one correspondence in the conventional display area 212.
[0177] The arrangement density of the multiple conventional light-emitting devices 27 located in the conventional display area 212 is the same as the arrangement density of the multiple light-emitting devices 22 located in the light-transmitting display area 211.
[0178] Optionally, the display panel also includes a plurality of virtual pixel circuits located in the conventional display area, at least one of which extends along a first direction and is located on the side of the at least one pixel driving circuit away from the light-transmitting display area. The structure of the virtual pixel circuit is similar to that of the pixel driving circuit, and the virtual pixel circuit may not be connected to either the first light-emitting device or the second light-emitting device on the display panel.
[0179] Optionally, the first light-emitting device 221 includes a green light-emitting device, and at least two second light-emitting devices 222 include a blue light-emitting device and a red light-emitting device. Since the green light-emitting device has a longer start-up time, and the start-up times of the blue and red light-emitting devices are relatively consistent, the length of the connecting wire 24 electrically connected to the green light-emitting device can be shorter than the length of the connecting wire electrically connected to the blue and red light-emitting devices.
[0180] In an optional embodiment, the compensation unit 25 can be electrically connected to the connecting lines 23 that are electrically connected to at least some of the blue and red light-emitting devices. Because the sizes of different types of light-emitting devices 22 are inconsistent, and the connection positions of different light-emitting devices 22 to the connecting lines are different, the distance between the connection positions of two adjacent light-emitting devices 22 in a light-emitting device group 22a is different, resulting in different differences in the connecting lines connecting different types of first and second pixel driving circuits. For example, the light-transmitting display area 211 includes a row of light-emitting devices 22, which may include a group of light-emitting devices. The arrangement order of a group of light-emitting devices is: red light-emitting device, green light-emitting device, blue light-emitting device, and green light-emitting device. The difference between the length of the first connecting line electrically connected to the green light-emitting device and the length of the second connecting line ranges from 10 micrometers to 12 micrometers. This difference is small, and the compensation unit may not be needed to simplify the manufacturing process of the display panel 20.
[0181] The difference between the length of the first connecting line connecting the red or blue light-emitting device and the length of the second connecting line is in the range of 50 micrometers to 70 micrometers. This difference is relatively large. It can be compensated by being electrically connected to the first pixel driving circuit so that the difference between the capacitance of the first connecting line electrically connected to the first pixel driving circuit and the capacitance of the second connecting line electrically connected to the second pixel driving circuit is smaller, thereby improving the display uniformity of the light-transmitting display area.
[0182] In summary, this application provides a display panel including: multiple pixel driving circuits, multiple connecting lines, and multiple compensation units. The length of the first connecting line electrically connected to the first pixel driving circuit is shorter than the length of the second connecting line electrically connected to the second pixel driving circuit. By electrically connecting the compensation units to the first connecting lines, the capacitance of the first connecting lines is compensated, thereby reducing the difference between the capacitance of the first and second connecting lines. This minimizes the difference in startup time between the light-emitting devices electrically connected to the first and second pixel driving circuits, thus improving the display uniformity of the light-transmitting display area.
[0183] This application also provides a display device, which can be any product or component with display function, such as a mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, or navigator.
[0184] The display device may include a photosensor and a display panel as described in any of the above embodiments. The photosensor may be an image sensor, a light sensor, or a proximity sensor, as found in a camera. The image sensor may be used for facial recognition or fingerprint recognition. The orthogonal projection of the light-receiving surface of the photosensor onto the substrate of the display panel is located within the light-transmitting display area.
[0185] It should be noted that the dimensions of layers and regions may be exaggerated in the accompanying drawings for clarity. Furthermore, it is understood that when an element or layer is referred to as being "on" another element or layer, it can be directly on the other element, or there may be intermediate layers. Additionally, it is understood that when an element or layer is referred to as being "below" another element or layer, it can be directly below the other element, or there may be more than one intermediate layer or element. Furthermore, it is also understood that when a layer or element is referred to as being "between" two layers or two elements, it can be the only layer between the two layers or two elements, or there may be more than one intermediate layer or element. Similar reference numerals throughout indicate similar elements.
[0186] In this application, the terms “first,” “second,” “third,” “fourth,” “fifth,” “sixth,” and “seventh” are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term “multiple” means two or more, unless otherwise expressly defined.
[0187] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A display panel, characterized in that, The display panel includes: A substrate having a light-transmitting display area and a conventional display area located around the light-transmitting display area; Multiple light-emitting devices located in the light-transmitting display area, multiple pixel driving circuits located in the conventional display area, and multiple connecting lines and multiple compensation parts located on the substrate; The plurality of light-emitting devices are arranged along a first direction; The plurality of pixel driving circuits are electrically connected to the plurality of light-emitting devices, and the plurality of pixel driving circuits include at least a first pixel driving circuit and a second pixel driving circuit. The first pixel driving circuit and the second pixel driving circuit are respectively located on both sides of the light-transmitting display area in the first direction. The first pixel driving circuit and the second pixel driving circuit are respectively electrically connected to the light-emitting devices through the connecting lines. The connecting lines include a first connecting line and a second connecting line. The length of the first connecting line to which the first pixel driving circuit is electrically connected is less than the length of the second connecting line to which the second pixel driving circuit is electrically connected. The compensation part is connected to the first connecting line. The first connecting line and the second connecting line are two of the plurality of connecting lines.
2. The display panel according to claim 1, characterized in that, The plurality of pixel driving circuits include a plurality of pixel driving circuits arranged on the substrate, the plurality of pixel driving circuits being arranged along the first direction, and a column of the pixel driving circuits including a plurality of the pixel driving circuits arranged along the second direction, wherein the angle between the second direction and the first direction is greater than 0 degrees and less than or equal to 90 degrees. The first pixel driving circuit is located in the nth column of the pixel driving circuit on the first side of the light-transmitting display area, and the second pixel driving circuit is located in the nth column of the pixel driving circuit on the second side of the light-transmitting display area. The first side and the second side are the two sides of the light-transmitting display area in the first direction, and n is an integer greater than or equal to 1.
3. The display panel according to claim 1, characterized in that, The compensation unit includes a linear compensation unit located in the conventional display area.
4. The display panel according to claim 3, characterized in that, The shape of the linear compensation part includes at least one of the following: straight, S-shaped, spiral, and broken line.
5. The display panel according to claim 1, characterized in that, The compensation unit includes a block-shaped compensation unit located in the conventional display area.
6. The display panel according to claim 5, characterized in that, The shape of the block-shaped compensation part includes at least one of rectangle, triangle, rhombus, circle and hexagon.
7. The display panel according to claim 1, characterized in that, The compensation section includes a linear compensation section and a block compensation section, which are located in the conventional display area.
8. The display panel according to claim 7, characterized in that, One end of the linear compensation part is connected to the first connecting line, and the other end of the linear compensation part is connected to the block compensation part.
9. The display panel according to any one of claims 1-8, characterized in that, The connecting line and the compensation part are in the same layer structure.
10. The display panel according to any one of claims 1-8, characterized in that, The compensation section is located at the end of the first connecting line away from the light-transmitting display area.
11. The display panel according to claim 1, characterized in that, The plurality of connecting lines includes a third connecting line and a fourth connecting line, wherein the third connecting line and the fourth connecting line are located on different layers; The third connecting line is connected to the compensation part, and the orthographic projection of the fourth connecting line on the substrate overlaps with the orthographic projection of the compensation part connected to the third connecting line on the substrate.
12. The display panel according to claim 1, characterized in that, The plurality of connecting lines includes a third connecting line and a fourth connecting line, wherein the third connecting line and the fourth connecting line are located on different layers; The third connecting line is connected to the compensation part, and the orthographic projection of the fourth connecting line on the substrate is offset from the orthographic projection of the compensation part connected to the third connecting line on the substrate.
13. The display panel according to claim 1, characterized in that, The connecting line includes a first sub-connecting line and a second sub-connecting line that are electrically connected, wherein one end of the first sub-connecting line is electrically connected to the light-emitting device, the other end is electrically connected to one end of the second sub-connecting line, and the other end of the second sub-connecting line is electrically connected to the pixel driving circuit. The first sub-connecting line extends along the first direction, and multiple first sub-connecting lines are arranged along the second direction. The compensation part is connected to the second sub-connecting line, and the compensation part and the first sub-connecting line are arranged sequentially in the second direction. The angle between the second direction and the first direction is greater than 0 degrees and less than or equal to 90 degrees.
14. The display panel according to claim 11, characterized in that, The plurality of connecting lines also includes a fifth connecting line. The third connecting line, the fourth connecting line and the fifth connecting line are located in different layers, and the third connecting line, the fourth connecting line and the fifth connecting line are stacked in a direction away from the substrate. The orthographic projection of at least a portion of the line segment extending along the first direction in the third connecting line on the substrate overlaps with the orthographic projection of at least a portion of the line segment extending along the first direction in the fourth connecting line on the substrate, and the orthographic projection of at least a portion of the line segment extending along the first direction in the fourth connecting line on the substrate does not overlap with the orthographic projection of at least a portion of the line segment extending along the first direction in the fifth connecting line on the substrate.
15. The display panel according to claim 1, characterized in that, The display panel also includes a planarization layer, on which a plurality of planarization vias are provided; The orthographic projection of the compensation portion on the substrate overlaps with the orthographic projection of at least one of the plurality of planarization vias on the substrate.
16. The display panel according to claim 3, characterized in that, The linear compensation portion includes a first linear compensation portion and a second linear compensation portion. The first linear compensation portion is located on the side of the second linear compensation portion closer to the center of the light-transmitting display area, and the width of the first linear compensation portion is smaller than the width of the second linear compensation portion.
17. The display panel according to claim 1, characterized in that, The absolute value of the difference between the sum of the capacitance value of the compensation section and the capacitance value of the first connecting line and the capacitance value of the second connecting line is less than a preset value.
18. The display panel according to claim 1, characterized in that, The plurality of light-emitting devices includes at least one row of light-emitting devices, and the row of light-emitting devices includes multiple groups of light-emitting devices, wherein the first direction is parallel to the row direction of the row of light-emitting devices.
19. The display panel according to claim 1, characterized in that, The light-emitting device group includes at least two first light-emitting devices and at least two second light-emitting devices; In the plurality of light-emitting device groups of the row of light-emitting devices, the pixel driving circuit electrically connected to the first light-emitting device is located on the side of the pixel driving circuit electrically connected to the second light-emitting device closer to the light-transmitting display area.
20. The display panel according to claim 19, characterized in that, The first light-emitting device and the second light-emitting device are arranged alternately in the first direction.
21. The display panel according to claim 19, characterized in that, The plurality of light-emitting device groups include a first light-emitting device group and a second light-emitting device group. The plurality of first connecting lines are electrically connected to the plurality of light-emitting devices and the plurality of first pixel driving circuits in the first light-emitting device group, and the plurality of second connecting lines are electrically connected to the plurality of light-emitting devices and the plurality of second pixel driving circuits in the second light-emitting device group. The length of the first connecting line is less than the length of the second connecting line, and the compensation part is connected to at least a portion of the first connecting line; The first light-emitting device group includes a first-color light-emitting device, a second-color light-emitting device, and a third-color light-emitting device, and at least a portion of the connecting lines of the first-color light-emitting device and the second-color light-emitting device are connected to the compensation unit.
22. The display panel according to claim 1, characterized in that, The light-transmitting display area has two light-transmitting partitions arranged along the first direction. The light-emitting device in either of the two light-transmitting partitions is electrically connected to the pixel driving circuit in the conventional display area adjacent to the light-transmitting partition.
23. The display panel according to claim 1, characterized in that, The area of the compensation section connected by the first connecting line is positively correlated with the first difference, which is the difference between the length of the first connecting line and the length of the second connecting line.
24. The display panel according to claim 1, characterized in that, The connecting wire includes a metal connecting wire; The metal connecting wire is electrically connected to the first light-emitting device in the row of light-emitting devices that is closest to the edge of the light-transmitting display area.
25. The display panel according to claim 24, characterized in that, The pixel driving circuit includes a thin-film transistor, which includes a source and a drain, and the metal interconnect is in the same layer as the source and the drain.
26. The display panel according to any one of claims 1-8, characterized in that, The display panel further includes: a plurality of conventional pixel driving circuits and a plurality of conventional light-emitting devices located in the conventional display area, wherein the plurality of conventional pixel driving circuits and the plurality of conventional light-emitting devices are electrically connected in a one-to-one correspondence in the conventional display area; The arrangement density of the multiple conventional light-emitting devices located in the conventional display area is the same as the arrangement density of the multiple light-emitting devices located in the light-transmitting display area.
27. The display panel according to claim 19, characterized in that, The first light-emitting device includes a green light-emitting device, and the at least two second light-emitting devices include a blue light-emitting device and a red light-emitting device.
28. The display panel according to claim 27, characterized in that, The compensation unit is connected to a connecting line that electrically connects at least a portion of the blue light-emitting device and the red light-emitting device.
29. A display device, characterized in that, include: The photosensitive sensor and the display panel according to any one of claims 1 to 28, wherein the orthogonal projection of the light-receiving surface of the photosensitive sensor onto the substrate of the display panel is located within the light-transmitting display area.
Citation Information
Patent Citations
Display panel and display device
CN112117320A
Display panel and display device
CN113421906A