Display panel, spliced screen and display device

Abstract

The application provides a display panel, a spliced screen and a display device. The display panel comprises a substrate, a light emitting unit setting area and a driving device. The light emitting unit setting area is used for setting a light emitting unit, the light emitting unit comprises at least one light emitting element, and the driving device is located on one side of the substrate and is arranged outside the light emitting unit setting area. The display panel provided by the embodiment of the application reduces the bonding difference of different light emitting elements, reduces the characteristic difference of different driving devices, and improves the display effect of the display panel.

Description

Technical Field

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

[0002] Small-size LED display technology generally refers to the technology of using LED chips with a size of less than 200μm to form a display array. Small-size LED chips include Micro LED chips and Mini LED chips. Due to the advantages of small-size LED chips, such as self-illumination, small size, light weight, high brightness, long lifespan, low power consumption, and fast response time, LED display technology has received increasingly widespread attention.

[0003] For video walls using small-sized LED chips, a borderless design is required around each individual display panel to ensure even spacing between LED chips in the resulting wall. This necessitates compressing the pixel driving circuitry of the surrounding LED chips while maintaining equal spacing. In current designs, the film layer environment beneath the bonding positions of the surrounding LED chips becomes inconsistent as the distance to the compressed pixel driving circuitry changes. Summary of the Invention

[0004] This invention provides a display panel, a video wall, and a display device, which reduces bonding differences between different light-emitting elements, reduces characteristic differences between different driving devices, and improves the display effect of the display panel.

[0005] In a first aspect, embodiments of the present invention provide a display panel, including a substrate, a light-emitting unit setting area, and a driving device; The light-emitting unit setting area is used to set light-emitting units, and the light-emitting unit includes at least one light-emitting element; the driving device is located on one side of the substrate, and the driving device is disposed outside the light-emitting unit setting area.

[0006] Secondly, embodiments of the present invention provide a splicing screen, including at least two display panels as described in the first aspect.

[0007] Thirdly, embodiments of the present invention provide a display device, including the splicing screen described in the second aspect.

[0008] In the display panel provided by this invention, the driving device and the light-emitting element do not overlap in the direction perpendicular to the plane of the substrate. The driving device does not affect the film environment below the bonding position of the light-emitting element, and it does not cause inconsistencies in the film environment below the bonding position of the light-emitting element, thereby reducing bonding differences between different light-emitting elements. This reduces device damage caused by bonding and other subsequent processes. Since the driving device and the light-emitting element do not overlap, the light-emitting element does not affect the characteristics and operation of the driving device, and the light-emitting element does not cause characteristic differences in the driving device in different areas, thereby reducing characteristic differences between different driving devices and improving the display effect of the display panel. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of the present invention, 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1 This is a schematic diagram of the structure of a display panel in related technologies; Figure 2 This is a schematic diagram of the structure of a display panel provided in an embodiment of the present invention; Figure 3 for Figure 2 The diagram shows a partial structural schematic of the display panel. Figure 4 for Figure 2 A schematic diagram of another part of the display panel structure is shown; Figure 5 A schematic diagram of a pixel driving circuit provided in an embodiment of the present invention; Figure 6 A schematic diagram of a pixel driving circuit provided in an embodiment of the present invention; Figure 7 This is a partial structural schematic diagram of another display panel provided in an embodiment of the present invention; Figure 8 This is a top view schematic diagram of a light-emitting element provided in an embodiment of the present invention; Figure 9 This is a partial structural schematic diagram of another display panel provided in an embodiment of the present invention; Figure 10 This is a top view schematic diagram of a light-emitting element provided in an embodiment of the present invention; Figure 11 This is a partial structural schematic diagram of another display panel provided in an embodiment of the present invention; Figure 12This is a partial structural schematic diagram of another display panel provided in an embodiment of the present invention; Figure 13 This is a partial structural schematic diagram of another display panel provided in an embodiment of the present invention; Figure 14 This is a partial structural schematic diagram of another display panel provided in an embodiment of the present invention; Figure 15 This is a partial structural schematic diagram of another display panel provided in an embodiment of the present invention; Figure 16 This is a partial structural schematic diagram of another display panel provided in an embodiment of the present invention; Figure 17 This is a partial structural schematic diagram of another display panel provided in an embodiment of the present invention; Figure 18 This is a partial top view of a display panel provided in an embodiment of the present invention; Figure 19 for Figure 18 A top view of part of the display panel structure shown; Figure 20 This is a partial top view of another display panel provided in an embodiment of the present invention; Figure 21 This is a partial structural cross-sectional view of a display panel provided in an embodiment of the present invention; Figure 22 This is a partial top view of another display panel provided in an embodiment of the present invention; Figure 23 This is a schematic diagram of a video wall provided in an embodiment of the present invention. Detailed Implementation

[0011] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0012] Figure 1 This is a schematic diagram of the structure of a display panel in the related art, for reference. Figure 1The display panel includes a substrate 110, a light-emitting element 210, and a driving device 120, with the driving device 120 located on one side of the substrate 110. The display panel includes an uncompressed region NZi and a compressed region Zi, with the compressed region Zi located around the uncompressed region NZi. The compressed region Zi is the area of ​​the display panel near its edge. The uncompressed region NZi is the area away from the edge of the display panel relative to the uncompressed region NZi. Within the compressed region Zi, the driving device 120 is compressed for various reasons, allowing other elements to be placed in the area of ​​the compressed region Zi near the edge of the display panel. The light-emitting element 210 is located on the side of the driving device 120 near the edge of the display panel. This arrangement ensures that the edge of the display panel can emit light, while preventing areas at the edge of the display panel from being undisplayed due to the driving device 120 being located there. This allows for the implementation of extremely narrow bezels or bezel-less display panel designs, improving the screen-to-body ratio. Furthermore, the display panel may also include flying wires that electrically connect the driving device 120 and the light-emitting element 210, so that the driving device 120 and the light-emitting element 210, which are spaced apart in the first direction X1, can be electrically connected, ensuring that the driving device 120 can drive the light-emitting element 210 to emit light normally for display. The distance between two adjacent driving devices 120 in the compression zone Zi along the first direction X1 is smaller than the distance between two adjacent driving devices 120 in the uncompressed zone Nzi along the first direction X1. In the compression zone Zi, driving devices 120 that are not in the same area or are far apart from the light-emitting element 210 are connected by flying wires ( Figure 1 (Bold lines in the text) Electrical connection. The spacing between the drive components 120 in the display panel is compressed along the first direction X1. In other embodiments, the spacing between the drive components 120 in the display panel may be compressed along both the first direction X1 and the second direction X2. The amount of compression of the spacing between the drive components 120 in the display panel along the second direction X2 is less than the amount of compression of the spacing between the drive components 120 along the first direction X1. The amount of compression of the spacing between the drive components 120 along the second direction X2 is smaller. The compression of the spacing between the drive components 120 along the second direction X2 is similar to the compression along the first direction X1.

[0013] Furthermore, in other aspects, the inventors discovered that the display panel includes an array substrate and light-emitting elements 210. The array substrate is provided with an array of driving devices 120 arranged in an array. The light-emitting elements 210 are bonded to the array substrate after a large-area array substrate is cut into smaller, required-area array substrates. In other words, the array substrate needs to be cut before the light-emitting elements 210 are bonded. To avoid damage to the driving devices 120 near the edges during cutting, the driving devices 120 at the edges of the array substrate can be moved away from the edges by compressing the spacing between the driving devices 120. However, to ensure that the edges of the display panel also have a display effect, light-emitting elements 210 need to be placed at the edges of the display panel. This results in a significant misalignment between the light-emitting elements 210 in the edge area and their corresponding electrically connected driving devices 120, requiring electrical connections via jumper wires. Moreover, considering the degree of misalignment between the light-emitting elements 210 in the edge area and their corresponding electrically connected driving devices 120, at least the outermost multiple light-emitting elements 210 need to be electrically connected to their corresponding driving devices 120 via jumper wires. The inventors discovered through research that, for example Figure 1 As shown, as the compression of the driving device 120 causes changes in the distance between different driving devices 120, in some areas the light-emitting element 210 overlaps with the driving device 120, while in other areas they do not overlap. Even in areas where the light-emitting element 210 overlaps with the driving device 120, there are differences in the overlapping positions of the light-emitting element 210 and the driving device 120. The inconsistent film environment beneath the bonding sites of the light-emitting element 210 causes bonding differences in the light-emitting element 210. In addition, if the light-emitting element 210 overlaps with the driving transistor in the driving device 120 in some areas, while not overlapping in others, differences in the characteristics of the driving device 120 in different areas can easily lead to display abnormalities in the display panel.

[0014] Figure 2 This is a schematic diagram of the structure of a display panel provided in an embodiment of the present invention, with reference to... Figure 2 The display panel includes a substrate 110, a light-emitting unit setting area 201, and a driving device 120; the light-emitting unit setting area 201 is used to set the light-emitting unit 200, and the light-emitting unit 200 includes at least one light-emitting element 210; Figure 2 The illustration uses a light-emitting unit 200 comprising three light-emitting elements 210 as an example, but is not limited thereto. The driving device 120 is located on one side of the substrate 110 and is disposed outside the light-emitting unit setting area 201.

[0015] In the display panel provided by this embodiment of the invention, the driving device 120 and the light-emitting element 210 do not overlap in a direction perpendicular to the plane of the substrate 110. The driving device 120 does not affect the film environment below the bonding position of the light-emitting element 210 (i.e., the location of the light-emitting element 210), and the driving device 120 does not cause inconsistencies in the film environment below the bonding position of the light-emitting element 210, thereby reducing bonding differences between different light-emitting elements 210. This reduces device damage caused by bonding and other subsequent processes. Since the driving device 120 and the light-emitting element 210 do not overlap, the light-emitting element 210 does not affect the characteristics and operation of the driving device 120, and the light-emitting element 210 does not cause characteristic differences in different areas of the driving device 120, thereby reducing characteristic differences between different driving devices 120 and improving the display effect of the display panel.

[0016] Figure 3 for Figure 2 The diagram shown is a partial structural schematic of the display panel; for reference. Figure 2 and Figure 3 , Figure 2 The diagram illustrates a 5x5 pixel arrangement, with a dashed rectangle representing one pixel. Here, a pixel can be understood as a pixel region. For example, a grid drawn with a light-emitting unit 200 composed of RGB subpixels as its center, where one grid center corresponds to one light-emitting unit 200. The mesh area enclosed by one grid represents one pixel region. Figure 3The diagram illustrates a 5x2 pixel arrangement, omitting the dashed rectangles indicating pixel boundaries. The display panel includes a light-emitting unit group 300, which comprises multiple light-emitting units 200 arranged along a first direction X1. In one embodiment, a column of light-emitting units 200 arranged along the first direction X1 constitutes a light-emitting unit group 300. Light-emitting units 200 not in the same column are distributed in different light-emitting unit groups 300. In other embodiments, a row of light-emitting units 200 arranged along a second direction X2 constitutes a light-emitting unit group 300. The display panel includes a wiring area 202, and a driving device 120 is disposed outside the wiring area 202. The wiring area 202 extends along the first direction X1, and the light-emitting unit group 300 overlaps with at least one wiring area 202. In this embodiment of the invention, the driving device 120 and the wiring area 202 do not overlap in a direction perpendicular to the plane of the substrate 110. The driving device 120 and the wiring in the wiring area 202 do not interfere with each other. In a direction perpendicular to the plane of substrate 110, the light-emitting unit group 300 overlaps with the wiring area 202. The area occupied by the light-emitting unit group 300 and the wiring area 202 together is smaller than the sum of the areas occupied by the light-emitting unit group 300 alone and the areas occupied by the wiring area 202 alone, thereby reducing the area occupied by the light-emitting unit group 300 and the wiring area 202 together. The area occupied by the light-emitting unit group 300 refers to the area occupied by each light-emitting unit 200 within the light-emitting unit group 300. The area occupied by the light-emitting unit 200 refers to the area occupied by each light-emitting element 210 within the light-emitting unit 200.

[0017] For example, in a direction perpendicular to the plane of the substrate 110, the light-emitting unit group 300 overlaps with the light-emitting unit setting area 201. For example, one light-emitting unit group 300 is disposed in one light-emitting unit setting area 201. Alternatively, one light-emitting unit group 300 overlaps with multiple light-emitting unit setting areas 201. Alternatively, multiple light-emitting unit groups 300 overlap with one light-emitting unit setting area 201.

[0018] Optionally, refer to Figure 2 and Figure 3 The light-emitting unit setting area 201 overlaps with the wiring area 202. The driving device 120 is located outside the light-emitting unit setting area 201 and the wiring area 202. The difference in the arrangement of the driving device 120 in the compressed area Zi and the uncompressed area Nzi will not affect the characteristics of the driving device 120, nor will it affect the film environment below the bonding position of the light-emitting element 210 in the light-emitting unit setting area 201.

[0019] It should be noted that the driving device 120 here refers to the pixel driving circuit. In other embodiments, the driving device 120 refers to a specific transistor in the pixel driving circuit, such as a driving transistor in the pixel driving circuit. This specific transistor has a one-to-one relationship with the pixel driving circuit. Further, the driving device 120 refers to a pulse width driving transistor or an amplitude driving transistor in the pixel driving circuit.

[0020] For example, the light-emitting unit setting area 201 overlaps with the wiring area 202. For instance, one light-emitting unit setting area 201 is disposed within one wiring area 202. Alternatively, one light-emitting unit setting area 201 overlaps with multiple wiring areas 202. Alternatively, multiple light-emitting unit setting areas 201 overlap with one wiring area 202. Alternatively, one wiring area 202 is disposed within one light-emitting unit setting area 201.

[0021] Optionally, refer to Figure 2 and Figure 3 The light-emitting unit group 300 or the wiring area 202 has circuit areas 203 on both sides along the second direction X2. The driving device 120 is located in the circuit area 203. The first direction X1 and the second direction X2 intersect. The circuit area 203 does not overlap with the wiring area 202, and / or the circuit area 203 does not overlap with the light-emitting unit group 300.

[0022] For example, along the second direction X2, a trace area 202 is provided between two adjacent circuit areas 203, and a circuit area 203 is provided between two adjacent trace areas 202. Along the second direction X2, the circuit areas 203 and trace areas 202 are arranged alternately. Along the second direction X2, the circuit areas 203 and the driving device 120 are arranged alternately.

[0023] Optionally, refer to Figure 2 and Figure 3 The display panel also includes traces 400, at least one trace 400 extending along a first direction X1 to form a trace area 202. The trace area 202 includes at least one trace 400 extending along the first direction X1. At least one trace 400 is used to transmit a fixed voltage signal, and / or, at least one trace 400 is used to transmit a variable voltage signal. The trace area 202 is located between two circuit areas 203, the driving device 120 is located in the circuit area 203, and the light-emitting units 200 are arranged along the extension path of the trace area 202. In one embodiment, a row of light-emitting units 200 arranged along the extension path of the trace area 202 forms a light-emitting unit group 300. The extension direction of the light-emitting unit group 300 is the same as the extension direction of the trace area 202.

[0024] Figure 4 for Figure 2 The diagram shows another partial structural representation of the display panel; in Figure 4The diagram illustrates the structure of a display panel corresponding to one pixel. (Reference) Figures 2-4 The light-emitting element 210 includes a first light-emitting element 211 and a second light-emitting element 212 located in the same light-emitting unit setting area 201. The first light-emitting element 211 and the second light-emitting element 212 have different emission colors and different emission wavelengths. The driving device 120 includes a first driving device 121 and a second driving device 122. The first light-emitting element 211 is electrically connected to the first driving device 121, and the first driving device 121 is used to drive the first light-emitting element 211 to emit light and control the brightness of the first light-emitting element 211. The second light-emitting element 212 is electrically connected to the second driving device 122; the second driving device 122 is used to drive the second light-emitting element 212 to emit light and control the brightness of the second light-emitting element 212. The display panel includes a light-emitting unit group 300, which includes a plurality of light-emitting units 200 arranged along a first direction X1. The first driving device 121 and the second driving device 122 are respectively located on different sides of the light-emitting unit group 300. In this embodiment of the invention, along the second direction X2, at least two driving devices 120 for driving the light-emitting elements 210 in the same light-emitting unit setting area 201 are located on different sides of the light-emitting unit group 300.

[0025] For example, the first light-emitting element 211 and the second light-emitting element 212 are located in the same light-emitting element 210. The first light-emitting element 211 is electrically connected to the first driving device 121, and the second light-emitting element 212 is electrically connected to the second driving device 122. Along the second direction X2, at least two driving devices 120 for driving the light-emitting elements 210 in the same light-emitting unit 200 are located on different sides of the light-emitting unit group 300. The display panel includes a wiring area 202, and along the second direction X2, the first driving device 121 and the second driving device 122 are located on different sides of the wiring area 202.

[0026] Optionally, refer to Figures 2-4 The two sides of the light-emitting unit 200 are respectively the first side (i.e. Figure 4 Side A in the middle) and the second side (i.e. Figure 4 In the circuit region 203 of the first side, the number of driving devices 120 corresponding to the light-emitting unit 200 or the light-emitting unit group 300 in the circuit region 203 of the first side is different from the number of driving devices 120 in the circuit region 203 of the second side. In this embodiment of the invention, the number of driving devices 120 in the circuit region 203 of the first side for driving the light-emitting element 210 in the light-emitting unit setting area 201 is different from the number of driving devices 120 in the circuit region 203 of the second side for driving the same light-emitting element 210 in the light-emitting unit setting area 201.

[0027] For example, refer to Figure 4 The first side is the left side (i.e.) Figure 4 Side A in the middle), the second side is the right side (i.e. Figure 4 (Side B in the diagram). One driving device 120 is disposed in the circuit area 203 of the first side corresponding to one light-emitting unit 200. Two driving devices 120 are disposed in the circuit area 203 of the second side corresponding to the light-emitting unit 200. In other embodiments, the first side may also be the right side, and the second side may also be the left side. The first side and second side, or the left side and right side, in subsequent embodiments can be referred to... Figure 4 The positional relationship between side A and side B is shown.

[0028] For example, refer to 2 and Figure 3 The first side is the left side, and the second side is the right side. Five driving devices 120 are provided in the circuit area 203 corresponding to the first side of one light-emitting unit group 300. Ten driving devices 120 are provided in the circuit area 203 corresponding to the second side of the same light-emitting unit group 300.

[0029] For example, refer to 2 and Figure 3 The light-emitting unit group 300 includes multiple light-emitting units 200. In the same light-emitting unit group 300, at least two light-emitting units 200 have the same number of driving devices 120 in the circuit area 203 on the first side, and the same number of driving devices 120 in the circuit area 203 on the second side. For example, in the same light-emitting unit group 300, each light-emitting unit 200 has one driving device 120 in its corresponding first side circuit area 203, and each light-emitting unit 200 has two driving devices 120 in its corresponding second side circuit area 203.

[0030] In other embodiments, within the same light-emitting unit group 300, at least two light-emitting units 200 have different numbers of driving devices 120 in the circuit area 203 on the first side, and the same at least two light-emitting units 200 have different numbers of driving devices 120 in the circuit area 203 on the second side. For example, within the same light-emitting unit group 300, the number of driving devices 120 in the circuit area 203 on the first side corresponding to row K1 of light-emitting units 200 is greater than the number of driving devices 120 in the circuit area 203 on the second side corresponding to row K1 of light-emitting units 200. In the other rows of light-emitting units 200 besides row K1, the number of driving devices 120 in the circuit area 203 on the first side corresponding to row K1+K2 of light-emitting units 200 is less than the number of driving devices 120 in the circuit area 203 on the second side corresponding to row K1+K2 of light-emitting units 200. Here, K1 and K2 are positive integers. Therefore, there are more rows of light-emitting units 200 that satisfy the condition that the number of driving devices 120 in the circuit area 203 on the first side corresponding to the light-emitting unit 200 is less than the number of driving devices 120 in the circuit area 203 on the second side corresponding to the light-emitting unit 200. Thus, the number of driving devices 120 in the circuit area 203 on the first side of the light-emitting unit group 300 is different from the number of driving devices 120 in the circuit area 203 on the second side.

[0031] Optionally, refer to Figures 2-4The two sides of the light-emitting unit 200 are respectively the first side and the second side, and / or the two sides of the light-emitting unit group 300 are respectively the first side and the second side. The light-emitting element 210 electrically connected to the driver device 120 corresponding to the light-emitting unit 200 or the light-emitting unit group 300 in the circuit area 203 on the first side is the first-side light-emitting element, and the light-emitting element 210 electrically connected to the driver device 120 corresponding to the light-emitting unit 200 or the light-emitting unit group 300 in the circuit area 203 on the second side is the second-side light-emitting element; the number of first-side light-emitting elements is different from the number of second-side light-emitting elements. It can be understood that the light-emitting element 210 is electrically connected to the driver device 120, the number of first-side light-emitting elements is the same as or corresponds to the number of driver devices 120 in the circuit area 203 on the first side, and the number of second-side light-emitting elements is the same as or corresponds to the number of driver devices 120 in the circuit area 203 on the second side. In the circuit area 203 on the first side, the number of driving devices 120 corresponding to the light-emitting unit 200 or the light-emitting unit group 300 is different from the number of driving devices 120 in the circuit area 203 on the second side. Correspondingly, the number of light-emitting elements on the first side is different from the number of light-emitting elements on the second side. The number of driving devices 120 refers to the number of pixel driving circuits. Since each pixel driving circuit has a fixed number of corresponding transistors, for example, a one-to-one correspondence between driving transistors (driving transistors in the amplitude adjustment module PAM or driving transistors in the pulse width modulation module PWM) and pixel driving circuits, the number of pixel driving circuits is equal to the number of driving transistors of that type in the pixel driving circuit. When the pixel driving circuit includes both pulse width driving transistors and amplitude driving transistors, the number of pixel driving circuits is equal to the number of pulse width driving transistors in the pixel driving circuit, or equal to the number of amplitude driving transistors in the pixel driving circuit.

[0032] For example, in the same light-emitting unit group 200, the number of driving devices 120 on both sides (first side and second side) of different rows of light-emitting units 200 is different. The number of driving devices 120 in the circuit area 203 on the first side corresponding to some rows of light-emitting units 200 is greater than the number of driving devices 120 in the circuit area 203 on the second side corresponding to those rows of light-emitting units 200. Conversely, the number of driving devices 120 in the circuit area 203 on the first side corresponding to another set of rows of light-emitting units 200 is less than the number of driving devices 120 in the circuit area 203 on the second side corresponding to that other set of rows of light-emitting units 200. The two parts of the same light-emitting unit group 200 are arranged in opposite ways, compensating for each other. Thus, from the perspective of the entire light-emitting unit group 200, the number of driving devices 120 on both sides (first side and second side) is equal. This allows the circuit structure on the left and right sides of the light-emitting unit group to be as balanced as possible; the number of connecting lines to the pixel driving circuits on the left and right sides can also be regionally balanced.

[0033] Optionally, refer to Figures 2-4 The display panel includes a light-emitting unit group 300, which includes a plurality of light-emitting units 200 arranged along a first direction X1. The first driving device 121 and the second driving device 122 have different widths along a second direction X2, and the first direction X1 intersects the second direction X2. In the circuit area 203 on the first side, the width of the driving device 120 corresponding to the light-emitting unit 200 or the light-emitting unit group 300 is different from the width of the driving device 120 in the circuit area 203 on the second side. Therefore, according to the width of the driving device 120, driving devices 120 with different widths along the second direction X2 can be placed on the corresponding first or second side to match the width of the driving device 120 with the physical space of the first or second side.

[0034] The width of the driving device 120 can be the width of the rectangular area occupied by the semiconductor layer in the driving device 120 along the second direction X2, or the width of the driving device 120 can be the width of the rectangular area occupied by the thin-film transistor in the driving device 120 along the second direction X2. Here, the driving device 120 refers to the pixel driving circuit. Specifically, the width of the driving device 120 can be the width of the rectangular area occupied by the semiconductor layer in the pixel driving circuit along the second direction X2, or the width of the driving device 120 can be the width of the rectangular area occupied by the thin-film transistor in the pixel driving circuit along the second direction X2.

[0035] For example, when the number of driver devices 120 on the first side of the light-emitting unit 200 or light-emitting unit group 300 is greater than the number of driver devices 120 on the second side, the width of the driver device 120 on the first side is smaller than the width of the driver device 120 on the second side. When the number of driver devices 120 on the first side of the light-emitting unit 200 or light-emitting unit group 300 is less than the number of driver devices 120 on the second side, the width of the driver device 120 on the first side is greater than the width of the driver device 120 on the second side. That is, the width of the driver device 120 on the side with a larger number of driver devices 120 is smaller than the width of the driver device 120 on the side with a smaller number of driver devices 120.

[0036] For example, the width of the first driving device 121 along the second direction X2 is D1, and the width of the second driving device 122 along the second direction X2 is D2, where D1 is greater than D2. The driving device 120 also includes a third driving device 123, where D1 may also be greater than the width of the third driving device 123 along the second direction X2. The widths of D2 and the third driving device 123 along the second direction X2 may be the same or different. The width of the driving device 120 along the second direction X2 may be the width of the rectangular area occupied by the semiconductor layer in the driving device 120 along the second direction X2. Alternatively, the width of the driving device 120 along the second direction X2 may be the width of the rectangular area occupied by the thin-film transistor in the driving device 120 along the second direction X2.

[0037] Figure 5 This is a circuit diagram of a pixel driving circuit provided in an embodiment of the present invention, with reference to... Figure 5 The pixel driving circuit includes a driving device 120, which includes multiple thin-film transistors. The multiple thin-film transistors include a power write transistor M1, a data write transistor M2, a driving transistor M3, a compensation transistor M4, a first reset transistor M5, a light emission control transistor M6, and a second reset transistor M7. The pixel driving circuit also includes a storage capacitor Cst.

[0038] The first terminal of power writing transistor M1 is electrically connected to the second power line PVDD, the second terminal of power writing transistor M1 is electrically connected to the second node N2, and the gate of power writing transistor M1 is electrically connected to the light emission control scan signal line EM. The second power line PVDD is configured to provide a positive power supply voltage. The first terminal of data writing transistor M2 is electrically connected to data line 410, the second terminal of data writing transistor M2 is electrically connected to the second node N2, and the gate of data writing transistor M2 is electrically connected to the second scan signal line SN2. The first terminal of driving transistor M3 is electrically connected to the second node N2, the second terminal of driving transistor M3 is electrically connected to the third node N3, and the gate of driving transistor M3 is electrically connected to the first node N1. The first terminal of compensation transistor M4 is electrically connected to the first node N1, the second terminal of compensation transistor M4 is electrically connected to the third node N3, and the gate of compensation transistor M4 is electrically connected to the second scan signal line SN2. The first terminal of the first reset transistor M5 is electrically connected to the first node N1, the second terminal of the first reset transistor M5 is electrically connected to the first reset signal line VREF1, and the gate of the first reset transistor M5 is electrically connected to the first scan signal line SN1. The first terminal of the light-emitting control transistor M6 is electrically connected to the third node N3, the second terminal of the light-emitting control transistor M6 is electrically connected to the fourth node N4, and the gate of the light-emitting control transistor M6 is electrically connected to the light-emitting control scan signal line EM. The first terminal of the second reset transistor M7 is electrically connected to the fourth node N4, the second terminal of the second reset transistor M7 is electrically connected to the second reset signal line VREF2, and the gate of the second reset transistor M7 is electrically connected to the adjustment control signal line SP. The first plate C1 of the storage capacitor Cst is electrically connected to the first node N1, and the second plate C2 of the storage capacitor Cst is electrically connected to the second power supply line PVDD.

[0039] Among them, the first node N1, the second node N2, the third node N3, and the fourth node N4 can be virtual connection nodes or actual connection nodes.

[0040] Figure 6 This is a circuit diagram of a pixel driving circuit provided in an embodiment of the present invention, with reference to... Figure 6 The pixel driving circuit includes a pulse width modulation (PWM) module and an amplitude adjustment (PAM) module, and the PWM module and / or the PAM module include a driving device 120. The PWM module is used to adjust the emission duty cycle of the light-emitting element 210, i.e., the duration of the emission period of the light-emitting element 210. The PAM module is used to control the amplitude of the driving current. The combined effect of the PWM module and the PAM module adjusts the grayscale or brightness displayed by the light-emitting element 210.

[0041] The pulse width modulation (PWM) module may include a first light-emitting control transistor M11, a first data writing transistor M12, a pulse width driving transistor M13, a first compensation transistor M14, a first gate reset transistor M15, a second light-emitting control transistor M16, and a first capacitor Cst1. The gate of the first gate reset transistor M15 is electrically connected to the first scan line Scan1, its first terminal is electrically connected to the first reset signal line VREF1, and its second terminal is electrically connected to the gate of the pulse width driving transistor M13. The gate of the first data writing transistor M12 is electrically connected to the second scan line Scan2, its first terminal is electrically connected to the pulse width modulation data line PWM-Data, and its second terminal is electrically connected to the first terminal of the pulse width driving transistor M13. The gate of the first compensation transistor M14 is electrically connected to the second scan line Scan2, its first terminal is electrically connected to the second terminal of the pulse width driving transistor M13, and its second terminal is also electrically connected to the gate of the pulse width driving transistor M13. The first plate of the first capacitor Cst1 is electrically connected to the sweep frequency signal line SWEEP, and the second plate of the first capacitor Cst1 is electrically connected to the gate of the pulse width driving transistor M13. The gate of the first light-emitting control transistor M11 is electrically connected to the first light-emitting control signal line Emit1, the first terminal of the first light-emitting control transistor M11 is electrically connected to the first fixed potential signal line VH2, and the second terminal of the first light-emitting control transistor M11 is electrically connected to the first terminal of the pulse width driving transistor M13. The gate of the second light-emitting control transistor M16 is electrically connected to the first light-emitting control signal line Emit1, and the first terminal of the second light-emitting control transistor M16 is electrically connected to the second terminal of the pulse width driving transistor M13.

[0042] The amplitude adjustment module PAM may include a third light-emitting control transistor M1, a second data writing transistor M2, an amplitude driving transistor M3, a second compensation transistor M4, a second gate reset transistor M5, a fourth light-emitting control transistor M6, an anode reset transistor M7, and a second capacitor Cst2. The first plate of the second capacitor Cst2 is electrically connected to the second power supply line PVDD, and the second plate of the second capacitor Cst2 is electrically connected to the gate of the amplitude driving transistor M3. The gate of the second gate reset transistor M5 is electrically connected to the first amplitude scan line PAM-S1. In one embodiment, the first amplitude scan line PAM-S1 may reuse the second scan line Scan2. In other embodiments, the first amplitude scan line PAM-S1 may also use a signal line different from the second scan line Scan2. The first terminal of the second gate reset transistor M5 is electrically connected to the second reset signal line VREF2, and the second terminal of the second gate reset transistor M5 is electrically connected to the gate of the amplitude driving transistor M3. The gate of the second data writing transistor M2 is electrically connected to the third scan line Scan3. The first terminal of the second data writing transistor M2 is electrically connected to the amplitude modulation data line PAM-Data. The second terminal of the second data writing transistor M2 is electrically connected to the first terminal of the amplitude driving transistor M3. The gate of the second compensation transistor M4 is electrically connected to the third scan line Scan3. The first terminal of the second compensation transistor M4 is electrically connected to the second terminal of the amplitude driving transistor M3. The second terminal of the second compensation transistor M4 is electrically connected to the gate of the amplitude driving transistor M3. The gate of the anode reset transistor M7 is electrically connected to the third scan line Scan3. The first terminal of the anode reset transistor M7 is electrically connected to the second reset signal line VREF2. The second terminal of the anode reset transistor M7 is electrically connected to the anode of the light-emitting element 210. The cathode of the light-emitting element 210 is connected to the third fixed potential signal line PVEE. The gate of the third light-emitting control transistor M1 is electrically connected to the second light-emitting control signal line Emit2. The first terminal of the third light-emitting control transistor M1 is electrically connected to the second power supply line PVDD. The second terminal of the third light-emitting control transistor M1 is electrically connected to the first terminal of the amplitude driving transistor M3. The gate of the fourth light-emitting control transistor M6 is electrically connected to the second light-emitting control signal line Emit2, the first terminal of the fourth light-emitting control transistor M6 is electrically connected to the second terminal of the amplitude driving transistor M3, and the second terminal of the fourth light-emitting control transistor M6 is electrically connected to the anode of the light-emitting element 210.

[0043] It should be noted that the above Figure 5 and Figure 6 The pixel driving circuit shown is merely an example and is not intended to limit the invention. The display panel provided by this invention may also include, in addition to... Figure 5 and Figure 6 Other forms of pixel driving circuits besides the pixel driving circuit shown.

[0044] Optionally, refer to Figures 2-4 The first driving device 121 includes a first driving transistor, and the second driving device 122 includes a second driving transistor. The channel widths of the first driving transistor and the second driving transistor are different. The first driving transistor and the second driving transistor can be... Figure 5 The driving transistor M3 shown, or the first driving transistor and the second driving transistor, can be as follows: Figure 6 The pulse width driving transistor M13 shown, or the first driving transistor and the second driving transistor, can be as follows: Figure 6 The amplitude driving transistor M3 is shown in the diagram. In this embodiment of the invention, the channel width of the first driving transistor is different from that of the second driving transistor, resulting in a difference between the width of the first driving device 121 along the second direction X2 and the width of the second driving device 122 along the second direction X2. Typically, the different channel widths of the driving transistors (including the first driving transistor and the second driving transistor) result in different driving capabilities of the driving transistors. Therefore, driving devices 120 with different driving capabilities can be placed on corresponding first or second sides according to the channel width of the driving transistor to match the driving requirements of different light-emitting elements 210. The channel width of the driving transistor refers to the size of the semiconductor layer perpendicular to the current direction. Typically, the carrier density in the channel of the driving transistor can be controlled by the voltage applied to the gate of the driving transistor, thereby modulating the channel conductivity. Here, the driving device 120 refers to a specific transistor in the pixel driving circuit, such as the driving transistor in the pixel driving circuit.

[0045] Exemplarily, the first driving device 121 includes a first driving transistor, and the second driving device 122 includes a second driving transistor. The channel width of the first driving transistor is greater than the channel width of the second driving transistor, the channel width-to-length ratio of the first driving transistor is greater than the channel width-to-length ratio of the second driving transistor, the driving capability of the first driving transistor is greater than the driving capability of the second driving transistor, and the driving capability of the first driving device 121 is greater than the driving capability of the second driving device 122. The first light-emitting element 211 emits red light, and the second light-emitting element 212 emits green or blue light. The driving current required by the first light-emitting element 211 is greater than the driving current required by the second light-emitting element 212. Therefore, this embodiment of the invention increases the driving capability of the first driving device 121 to meet the requirement of the first light-emitting element 211 for a larger driving current.

[0046] Optionally, refer to Figures 2-4The light-emitting element 210 further includes a third light-emitting element 213; the first light-emitting element 211 emits red light, the second light-emitting element 212 emits green light, and the third light-emitting element 213 emits blue light. The driving device 120 further includes a third driving device 123, and the third light-emitting element 213 is electrically connected to the third driving device 123; the third driving device 123 is used to drive the third light-emitting element 213 to emit light and control the brightness of the third light-emitting element 213. The second driving device 122 and the third driving device 123 are located on the same side of the light-emitting unit group 300. In this embodiment of the invention, along the second direction X2, at least two driving devices 120 for driving the light-emitting elements 210 in the same light-emitting unit setting area 201 are respectively located on the same side of the light-emitting unit group 300.

[0047] For example, the second light-emitting element 212 and the third light-emitting element 213 are located in the same light-emitting element 210. The second light-emitting element 212 is electrically connected to the second driving device 122, and the third light-emitting element 213 is electrically connected to the third driving device 123. Along the second direction X2, at least two driving devices 120 for driving the light-emitting elements 210 in the same light-emitting unit 200 are located on the same side of the light-emitting unit group 300. The display panel includes a wiring area 202, and along the second direction X2, the second driving device 122 and the third driving device 123 are located on the same side of the wiring area 202.

[0048] In other embodiments, the first light-emitting element 211 emits green or blue light, the second light-emitting element 212 emits red or blue light, and the third light-emitting element 213 emits red or green light.

[0049] Optionally, refer to Figures 2-4The display panel includes a light-emitting unit group 300, which includes a plurality of light-emitting units 200 arranged along a first direction X1. The width of the first driving device 121 along the second direction X2 is greater than or equal to the width of the second driving device 122 along the second direction X2. The first direction X1 intersects the second direction Y. And / or, the width of the first driving device 121 along the second direction X2 is greater than or equal to the width of the third driving device 123 along the second direction X2. In this embodiment of the invention, the first driving device 121 is located on the first side of the light-emitting unit group 300, and the second driving device 122 and the third driving device 123 are located on the second side of the light-emitting unit group 300; or, the first driving device 121 is located on the second side of the light-emitting unit group 300, and the second driving device 122 and the third driving device 123 are located on the first side of the light-emitting unit group 300. The width of the first driving device 121 along the second direction X2 is larger. The widths of the second driving device 122 and the third driving device 123 along the second direction X2 are smaller. Therefore, the difference between the sum of the widths of the second driving device 122 and the third driving device 123 along the second direction X2 and the width of the first driving device 121 along the second direction X2. In other words, corresponding to the same light-emitting unit group 300, this embodiment of the invention places the driving device 120 with a larger width in a smaller number of circuit areas 203, and the driving device 120 with a smaller width in a larger number of circuit areas 203, thereby balancing the widths of the circuit areas 203 on the first side and the circuit areas 203 on the second side as a whole.

[0050] Optionally, refer to Figure 3 The light-emitting unit 200 includes a first light-emitting unit 221, which is located near the edge of the display panel. An edge driver 120 is electrically connected to the light-emitting element 210 in the first light-emitting unit 221. Along the second direction X2, the light-emitting element 210 in the first light-emitting unit 221 and the edge driver 231 do not overlap; the light-emitting element 210 in the first light-emitting unit 221 and the edge driver 231 are not in the same row. Alternatively, the distance between the light-emitting element 210 in the first light-emitting unit 221 and the corresponding edge driver 231 is greater than the distance between the light-emitting element 210 in a non-first light-emitting unit and the corresponding driver 120. The distance between the light-emitting element 210 in the first light-emitting unit 221 and the corresponding edge driver 231 is relatively large, and the light-emitting element 210 in the first light-emitting unit 221 and the corresponding edge driver 231 are electrically connected via a flying wire. The distance between the light-emitting element 210 in a non-first light-emitting unit and the corresponding driver 120 is relatively small.

[0051] For example, the light-emitting unit 200 includes a second light-emitting unit 222, which is located on the side of the first light-emitting unit 221 away from the edge of the display panel. The driving device 120 electrically connected to the light-emitting element 210 in the second light-emitting unit 222 is an array driving device 232. Along the second direction X2, the light-emitting element 210 in the second light-emitting unit 222 overlaps with the array driving device 232; the light-emitting element 210 in the second light-emitting unit 222 and the array driving device 232 are in the same row. Alternatively, the distance between the light-emitting element 210 in the first light-emitting unit 221 and the corresponding edge driving device 231 is greater than the distance between the light-emitting element 210 in the second light-emitting unit 222 and the corresponding array driving device 232.

[0052] For example, the first light-emitting unit 221 and the edge driving device 231 are located in the compressed region Zi. The second light-emitting unit 222 and the array driving device 232 are located in the uncompressed region NZi, or the second light-emitting unit 222 and the array driving device 232 are located in both the compressed region Zi and the uncompressed region NZi.

[0053] Optionally, refer to Figures 2-4 The display panel includes a light-emitting unit group 300, which includes a plurality of light-emitting units 200 arranged along a first direction. The light-emitting elements 210 in the same light-emitting unit 200 include a first light-emitting element 211, a second light-emitting element 212, and a third light-emitting element 213. The first light-emitting element 211, the second light-emitting element 212, and the third light-emitting element 213 are arranged along the first direction X1. The first light-emitting element 211, the second light-emitting element 212, and the third light-emitting element 213 are arranged sequentially.

[0054] Figure 7 This is a partial structural schematic diagram of another display panel provided in an embodiment of the present invention; Figure 7 The area indicated by the dashed rectangle represents one pixel. (Reference) Figure 2 and Figure 7 The display panel includes a light-emitting unit group 300, which includes a plurality of light-emitting units 200 arranged along a first direction X1. The light-emitting elements 210 in the same light-emitting unit 200 include a first light-emitting element 211, a second light-emitting element 212, and a third light-emitting element 213; the second light-emitting element 212 and the third light-emitting element 213 are arranged along a second direction X2, and the first direction X1 intersects with the second direction X2. The first light-emitting element 211 is located on one side of the second light-emitting element 212 and the third light-emitting element 213 along the first direction X1, and the gap between the first light-emitting element 211 and the second light-emitting element 212 and the third light-emitting element 213 overlaps. The first light-emitting element 211, the second light-emitting element 212, and the third light-emitting element 213 are arranged in a triangular pattern.

[0055] For example, the first light-emitting element 211 emits red light, the second light-emitting element 212 emits green or blue light, and the third light-emitting element emits blue or green light. The driving current required for the first light-emitting element 211 is greater than that required for the second light-emitting element 212. The driving current required for the first light-emitting element 211 is greater than that required for the third light-emitting element 213. In one embodiment, the first light-emitting element 211 has the same or equivalent size as the second light-emitting element 212 or the third light-emitting element 213. In another embodiment, the size of the first light-emitting element 211 is larger than the size of the second light-emitting element 212, and the size of the first light-emitting element 211 is larger than the size of the third light-emitting element 213. Thus, in the light-emitting unit 200, the first light-emitting element 211 is arranged in a separate row, while the second light-emitting element 212 and the third light-emitting element 213 are arranged in another row.

[0056] Figure 8 This is a top view schematic diagram of a light-emitting element provided in an embodiment of the present invention; see reference. Figure 4 , Figure 7 and Figure 8 The display panel includes a light-emitting unit group 300, which includes a plurality of light-emitting units 200 arranged along a first direction X1; the length of the light-emitting element 210 along the first direction X1 is greater than its length along the second direction X2; the first direction X1 intersects the second direction X2. And / or, the same light-emitting element 210 includes a first electrode 241 and a second electrode 242, the first electrode 241 and the second electrode 242 are arranged opposite each other along a third direction X3, and the third direction X3 is parallel to the first direction X1.

[0057] Figure 9 This is a partial structural schematic diagram of another display panel provided in an embodiment of the present invention; Figure 10 This is a top view schematic diagram of a light-emitting element provided in an embodiment of the present invention; see reference. Figure 9 and Figure 10 The length of the light-emitting element 210 along the first direction X1 is less than the length along the second direction X2; and / or, the same light-emitting element 210 includes a first electrode 241 and a second electrode 242, the first electrode 241 and the second electrode 242 are disposed opposite each other along a third direction X3, the first electrode 241 and the second electrode 242 are arranged along the third direction X3, and the third direction X3 is parallel to the second direction X2.

[0058] Figure 11 This is a partial structural schematic diagram of another display panel provided in an embodiment of the present invention; see reference. Figure 11The light-emitting unit setting area 201 also includes a light-emitting element redundancy position 250, which is used to set a repair light-emitting element 210. Each light-emitting unit 200 is provided with at least one light-emitting element 210. If a light-emitting element 210 fails, a spare light-emitting element 210 is transferred from the light-emitting element redundancy position 250 within that light-emitting unit 200 to improve the transfer yield. The electrode of the light-emitting element redundancy position 250 is electrically connected to the electrode of its corresponding original position, or the electrode of the light-emitting element redundancy position 250 and the electrode of its corresponding original position are connected to the same pixel driving circuit. The light-emitting element redundancy position 250 is adjacent to its corresponding original position. The electrode of the light-emitting element redundancy position 250 and the electrode of its corresponding original position include a cathode pad and / or an anode pad. The original position corresponding to the light-emitting element redundancy position 250 refers to the position adjacent to the light-emitting element redundancy position 250 and used to set the light-emitting element 210. When the light-emitting element 210 at its original position fails, a repair light-emitting element 210 can be installed in the redundant position 250 corresponding to the original position. For details regarding the cathode pad and anode pad, please refer to the following description; they will not be repeated here.

[0059] For example, refer to Figure 11 For the same light-emitting unit 200, the number of redundant light-emitting element positions 250 is the same as the number of light-emitting elements 210. The first light-emitting element 211, the second light-emitting element 212, and the third light-emitting element 213 each correspond to one redundant light-emitting element position 250.

[0060] Optionally, refer to Figure 4 and Figure 8 The first light-emitting element 211, the second light-emitting element 212, and the third light-emitting element 213 are arranged along the first direction X1. The length of the light-emitting element 210 along the first direction X1 is less than the length along the second direction X2; the first direction X1 intersects the second direction X2; and / or, the same light-emitting element 210 includes a first electrode 241 and a second electrode 242, the first electrode 241 and the second electrode 242 are arranged opposite each other along a third direction X3, and the third direction X3 is parallel to the second direction X2.

[0061] Optionally, refer to Figure 10 and Figure 11The length of the light-emitting element 210 along the first direction X1 is greater than its length along the second direction X2; the first direction X1 intersects the second direction X2; and / or, the same light-emitting element 210 includes a first electrode 241 and a second electrode 242, the first electrode 241 and the second electrode 242 are arranged opposite each other along a third direction X3, and the third direction X3 is parallel to the first direction X1. The light-emitting unit setting area 201 also includes a plurality of light-emitting element redundant positions 250, which are used to set the light-emitting element 210 for repair, and the plurality of light-emitting element redundant positions 250 are arranged along the first direction X1; the light-emitting element 210 and the light-emitting element redundant positions 250 are arranged along the second direction X2. In this embodiment of the invention, corresponding to the same light-emitting unit 200, the arrangement direction of the plurality of light-emitting element redundant positions 250 is the same as the arrangement direction of the plurality of light-emitting elements 210. Corresponding to the same light-emitting unit 200, the plurality of light-emitting element redundant positions 250 are arranged along the first direction X1, and the light-emitting element redundant positions 250 and the light-emitting element 210 are arranged along the second direction X2. The length of the light-emitting element 210 along the first direction X1 is greater than its length along the second direction X2. Therefore, reducing the width of the light-emitting element 210 along the first direction X1 and reducing the width of the redundant position 250 along the first direction X1, while placing the light-emitting element 210 and the redundant position 250 along the first direction X1, does not significantly increase the space jointly occupied by the light-emitting element 210 and the redundant position 250 in the first direction X1. The width of the redundant position 250 along the first direction X1 is equivalent to the width of the light-emitting element 210 along the first direction X1 for which the redundant position 250 is located. The length of the redundant position 250 along the second direction X2 is equivalent to the length of the light-emitting element 210 along the second direction X2 for which the redundant position 250 is located. In one embodiment, the width of the redundant position 250 along the first direction X1 is equal to the width of the light-emitting element 210 along the first direction X1 for which the redundant position 250 is located. The length of the redundant position 250 of the light-emitting element along the second direction X2 is equal to the length of the light-emitting element 210 used to set the redundant position 250 along the second direction X2.

[0062] Optionally, refer to Figure 7 and Figure 8In the same light-emitting unit 200, the second light-emitting element 212 and the third light-emitting element 213 are arranged along the second direction X2. The first light-emitting element 211 is located on one side of the second light-emitting element 212 and the third light-emitting element 213 along the first direction X1, and the first light-emitting element 211 overlaps with the gap between the second light-emitting element 212 and the third light-emitting element 213. The length of the light-emitting element 210 along the first direction X1 is less than the length along the second direction X2; the first direction X1 intersects the second direction X2. And / or, the same light-emitting element 210 includes a first electrode 241 and a second electrode 242, the first electrode 241 and the second electrode 242 are arranged opposite each other along a third direction X3, and the third direction X3 is parallel to the second direction X2.

[0063] Figure 12 This is a partial structural schematic diagram of another display panel provided in an embodiment of the present invention; see reference. Figure 8 and Figure 12 In the same light-emitting unit 200, the second light-emitting element 212 and the third light-emitting element 213 are arranged along the second direction X2. The first light-emitting element 211 is located on one side of the second light-emitting element 212 and the third light-emitting element 213 along the first direction X1, and the first light-emitting element 211 overlaps with the gap between the second light-emitting element 212 and the third light-emitting element 213. The length of the light-emitting element 210 along the first direction X1 is less than its length along the second direction X2; the first direction X1 intersects the second direction X2. And / or, the same light-emitting element 210 includes a first electrode 241 and a second electrode 242, which are arranged opposite each other along a third direction X3, which is parallel to the second direction X2. Along the first direction X1, adjacent light-emitting elements 210 overlap with the light-emitting element redundancy position 250.

[0064] For example, refer to Figure 12 Along the first direction X1, the first light-emitting element 211 overlaps with at least one redundant light-emitting element position 250, the second light-emitting element 212 overlaps with at least one redundant light-emitting element position 250, and the third light-emitting element 213 overlaps with at least one redundant light-emitting element position 250. In the same light-emitting unit 200, the three redundant light-emitting element positions 250 are arranged in two rows, with the two redundant light-emitting element positions 250 in the second row arranged along the second direction X2. Along the first direction X1, the redundant light-emitting element positions 250 in the first row overlap with the gap between the two redundant light-emitting element positions 250 in the second row. The three redundant light-emitting element positions 250 are arranged in a triangular pattern.

[0065] Figure 13 This is a partial structural schematic diagram of another display panel provided in an embodiment of the present invention; see reference. Figure 10 and Figure 13In the same light-emitting unit 200, the second light-emitting element 212 and the third light-emitting element 213 are arranged along the second direction X2. The first light-emitting element 211 is located on one side of the second light-emitting element 212 and the third light-emitting element 213 along the first direction X1, and the first light-emitting element 211 overlaps with the gap between the second light-emitting element 212 and the third light-emitting element 213. The length of the light-emitting element 210 along the first direction X1 is greater than its length along the second direction X2; the first direction X1 intersects the second direction X2. And / or, the same light-emitting element 210 includes a first electrode 241 and a second electrode 242, which are arranged opposite each other along a third direction X3, which is parallel to the first direction X1. Along the second direction X2, adjacent light-emitting elements 210 overlap with the light-emitting element redundancy position 250.

[0066] For example, refer to Figure 12 Along the second direction X2, the first light-emitting element 211 overlaps with at least one redundant light-emitting element position 250, the second light-emitting element 212 overlaps with at least one redundant light-emitting element position 250, and the third light-emitting element 213 overlaps with at least one redundant light-emitting element position 250. In the same light-emitting unit 200, the three redundant light-emitting element positions 250 are arranged in two rows, with the two redundant light-emitting element positions 250 in the second row arranged along the second direction X2. Along the first direction X1, the redundant light-emitting element positions 250 in the first row overlap with the gap between the two redundant light-emitting element positions 250 in the second row. The three redundant light-emitting element positions 250 are arranged in a triangular pattern. The first electrode 241 and the second electrode 242 of the same light-emitting element 210 are arranged along the second direction X2, and the redundant light-emitting element positions 250 corresponding to the light-emitting element 210 are arranged along the first direction X1.

[0067] For example, refer to Figure 13 The first electrode 241 and the second electrode 242 of the same light-emitting element 210 are arranged along a first direction X1, and the redundant position 250 of the corresponding light-emitting element 210 is arranged along a second direction X2. That is, the arrangement direction of the first electrode 241 and the second electrode 242 of the same light-emitting element 210 intersects with the arrangement direction of the redundant position 250 and the corresponding light-emitting element 210. This rule can also be applied to other embodiments of this application, which will not be elaborated further in other related embodiments.

[0068] Figure 14 This is a partial structural schematic diagram of another display panel provided in an embodiment of the present invention; see reference. Figure 14The width of the first driving device 121 along the second direction X2 is D1, and the width of the second driving device 122 along the second direction X2 is D2, where D1 equals D2. D1 can be equal to the width of the third driving device 123 along the second direction X2. By placing the driving devices 120 of the same width on their respective first or second sides, the physical space occupied by the driving devices 120 is reduced, compensating for insufficient wiring space. In other words, sufficient physical space is reserved for the wiring area 202. This implementation is particularly suitable for situations where wiring space is limited.

[0069] Figure 15 This is a partial structural schematic diagram of another display panel provided in an embodiment of the present invention; see reference. Figure 15 The driving device 120 includes a first driving device 121, a second driving device 122, and a third driving device 123. The first driving device 121 is electrically connected to the first light-emitting element 211, the second driving device 122 is electrically connected to the second light-emitting element 212, and the third driving device 123 is electrically connected to the third light-emitting element 213. The display panel includes a light-emitting unit group 300, which includes a plurality of light-emitting units 200 arranged along a first direction X1. The two sides of the light-emitting unit 200 are a first side and a second side, and / or, the two sides of the light-emitting unit group 300 along a second direction X2 are a first side and a second side, respectively. The second driving device 122 is located on the first side, and the first driving device 121 and the third driving device 123 are located on the second side. The second light-emitting element 212 is closer to the first side than the third light-emitting element 213. Along the second direction X2, the third light-emitting element 213 is closer to the second side than the second light-emitting element 212. Thus, the second light-emitting element 212 is closer to the second driving device 122, and the third light-emitting element 213 is closer to the third driving device 123. Reduce the distance between the second light-emitting element 212 and the second driving device 122, and reduce the distance between the third light-emitting element 213 and the third driving device 123. Reduce the length of the connecting line between the second light-emitting element 212 and the second driving device 122, and reduce the length of the connecting line between the third light-emitting element 213 and the third driving device 123.

[0070] For example, refer to Figure 15The first light-emitting element 211 is located in one row, and the second light-emitting element 212 and the third light-emitting element 213 are located in another row. The first light-emitting element 211 is electrically connected to the first driving device 121 on the second side. Along the second direction X2, the second light-emitting element 212 is located between the second driving device 122 and the third light-emitting element 213, adjacent to the second driving device 122, and the distance between the second light-emitting element 212 and the second driving device 122 is short, facilitating the electrical connection between the second light-emitting element 212 and the second driving device 122. Along the second direction X2, the third light-emitting element 213 is located between the second light-emitting element 212 and the third driving device 123, and the distance between the third light-emitting element 213 and the third driving device 123 is short, facilitating the electrical connection between the third light-emitting element 213 and the third driving device 123.

[0071] Optionally, refer to Figure 15 The first light-emitting element 211 emits green light, the second light-emitting element 212 emits red light, and the third light-emitting element 213 emits blue light; or, the first light-emitting element 211 emits blue light, the second light-emitting element 212 emits red light, and the third light-emitting element 213 emits green light.

[0072] For example, refer to Figure 15 The second light-emitting element 212 emits red light, and the driving current required for the second light-emitting element 212 is greater than that required for the first light-emitting element 211. The driving current required for the second light-emitting element 212 is greater than that required for the third light-emitting element 213. To improve the driving capability of the second driving device 122, the size of the second driving device 122 can be increased. The width of the second driving device 122 along the second direction X2 is greater than the width of the first driving device 121 along the second direction X2, and the width of the second driving device 122 along the second direction X2 is greater than the width of the third driving device 123 along the second direction X2. To match the larger width of the second driving device 122, the second driving device 122 is located on the first side of the light-emitting unit 200 or the light-emitting unit group 300, while the first driving device 121 and the third driving device 123 are located on the second side of the light-emitting unit 200 or the light-emitting unit group 300. To reduce the length of the connecting line, along the second direction X2, the second light-emitting element 212 is closer to the first side of the light-emitting unit 200 or the light-emitting unit group 300 than the third light-emitting element 213.

[0073] Optionally, refer to Figure 7The driving device 120 includes a first driving device 121, a second driving device 122, and a third driving device 123. The first driving device 121 is electrically connected to the first light-emitting element 211, the second driving device 122 is electrically connected to the second light-emitting element 212, and the third driving device 123 is electrically connected to the third light-emitting element 213. The display panel includes a light-emitting unit group 300, which includes a plurality of light-emitting units 200 arranged along a first direction X1. The second driving device 122 and the third driving device 123 are located on the same side of the light-emitting unit group 300. Along a second direction X2, the second driving device 122 is located between the light-emitting unit group 300 and the third driving device 123.

[0074] Figure 16 This is a partial structural schematic diagram of another display panel provided in an embodiment of the present invention; see reference. Figure 16 The second driving device 122 and the third driving device 123 are located on the same side of the light-emitting unit group 300. The second driving device 122 and the third driving device 123 are located on the same side of the light-emitting unit 200. Along the second direction X2, the third driving device 123 is located between the light-emitting unit group 300 and the second driving device 122. Along the second direction X2, the third driving device 123 is located between the light-emitting unit 200 and the second driving device 122. The third driving device 123 is adjacent to the third light-emitting element 213, and the distance between the third driving device 123 and the third light-emitting element 213 is relatively short, facilitating the electrical connection between the third driving device 123 and the third light-emitting element 213.

[0075] Optionally, refer to Figure 2 and Figure 3 The light-emitting unit group 300 or the wiring area 202 has circuit areas 203 on both sides along the second direction X2, and the light-emitting unit 200 has circuit areas 203 on both sides along the second direction X2. The driving device 120 is located in the circuit area 203, and the first direction X1 intersects the second direction X2. At least two driving devices 120 in the same circuit area 203 are respectively connected to the light-emitting elements 210 in the light-emitting unit setting area 201 on both sides of the circuit area 203.

[0076] For example, the second driver device 122 and the third driver device 123 in the circuit area 203 are connected to the light-emitting element 210 in the light-emitting unit setting area 201 on one side of the circuit area 203. The first driver device 121 in the circuit area 203 is connected to the light-emitting element 210 in the light-emitting unit setting area 201 on the other side of the circuit area 203. Along the second direction X, the circuit area 203 between each two adjacent light-emitting unit groups 300 includes the first driver device 121, the second driver device 122, and the third driver device 123, and the circuit area 203 between each two adjacent wiring areas 202 also includes the first driver device 121, the second driver device 122, and the third driver device 123. Between each two adjacent light-emitting unit groups 300 or two wiring areas 202, the number of first driver devices 121 is the same, the number of second driver devices 122 is the same, and the number of third driver devices 123 is the same, and the distribution of the first driver devices 121, the second driver devices 122, and the third driver devices 123 in physical space is relatively balanced.

[0077] Optionally, refer to Figure 7 The display panel includes a light-emitting unit group 300, which includes a plurality of light-emitting units 200 arranged along a first direction X1. The two sides of each light-emitting unit 200 are respectively a first side and a second side, and / or, the two sides of the light-emitting unit group 300 along a second direction X2 are respectively a first side and a second side; the first direction X1 and the second direction X2 intersect. The distance from the light-emitting unit 200 to the driving device 120 on the first side is a first distance L1. This distance is the minimum distance between the edge of the light-emitting element 210 in the light-emitting unit 200 and the edge of the driving device 120 on the first side along the second direction X2. The distance from the light-emitting unit 200 to the driving device 120 on the second side is a second distance L2. This distance is also the minimum distance between the edge of the light-emitting element 210 in the light-emitting unit 200 and the edge of the driving device 120 on the second side along the second direction X2. The first distance L1 and the second distance L2 are different. Therefore, the number of driving devices 120, the distance between the driving devices 120 and the light-emitting unit 200, and the physical space of the first or second side can be matched according to the number of driving devices 120 on the first and second sides.

[0078] For example, refer to Figure 7Along the second direction X2, the distance between the edge of the first light-emitting element 211 adjacent to the edge of the first driving device 121 and the edge of the first driving device 121 adjacent to the edge of the first light-emitting element 211 is a first distance L1. Along the second direction X2, the distance between the edge of the third light-emitting element 213 adjacent to the edge of the second driving device 122 and the edge of the second driving device 122 adjacent to the edge of the third light-emitting element 213 is a second distance L2. The first distance L1 and the second distance L2 are different.

[0079] For example, in one embodiment, corresponding to the same light-emitting unit 200, a driving device 120 (e.g., a first driving device 121) is provided on the first side of the light-emitting unit group 300 or the light-emitting unit 200, and two driving devices 120 (e.g., a second driving device 122 and a third driving device 123) are provided on the second side of the light-emitting unit group 300 or the light-emitting unit 200. The width of the second direction X2 occupied by the driving device 120 on the second side of the light-emitting unit group 300 or the light-emitting unit 200 is greater than the width of the second direction X2 occupied by the driving device 120 on the first side, and the first distance L1 is greater than the second distance L2. The distance between the light-emitting unit 200 and the driving device 120 on the first side is large, and the distance between the light-emitting unit 200 and the driving device 120 on the second side is small. The light-emitting unit 200 can be located at the center of the pixel or near the center of the pixel.

[0080] In another embodiment, the first distance L1 and the second distance L2 are equal, such that the distance between the driving device 120 and the light-emitting unit 200 along the second direction X2 is minimized, thereby compressing the pixel size along the second direction X2 and increasing the PPI of the display panel. On the other hand, the first distance L1 and the second distance L2 are equal, such that the interaction between the driving device 120 and the light-emitting element 210 of the light-emitting unit 200 on the first side of the light-emitting unit group 300 or the light-emitting unit 200 is comparable to the interaction between the driving device 120 and the light-emitting element 210 of the light-emitting unit 200 on the second side.

[0081] Optionally, refer to Figure 7 The first distance L1 is greater than 5 micrometers, and the second distance L2 is greater than 5 micrometers. The distance between the driving device 120 and the light-emitting element 210 of the light-emitting unit 200 is far enough to avoid overlap between the driving device 120 and the light-emitting element 210, and to reduce unwanted mutual influence between the driving device 120 and the light-emitting element 210.

[0082] Optionally, refer to Figures 2-4 The display panel also includes traces 400, which include data lines 410 extending along a first direction X1 and located in trace area 202. Data lines 410 are used to transmit data signals. Figure 5In the circuit shown, data line 410 is used to write data signals to the gate of driving transistor M3. In such a circuit... Figure 6 In the circuit shown, data line 410 includes a pulse width modulation data line PWM-Data and an amplitude modulation data line PAM-Data. The pulse width modulation data line PWM-Data is used to write pulse width data signals to the gate of the pulse width driving transistor M13. The amplitude modulation data line PAM-Data is used to write amplitude data signals to the gate of the amplitude driving transistor M3.

[0083] Optionally, refer to Figures 2-4 ,as well as Figure 6 The display panel includes a pulse width modulation (PWM) module and / or an amplitude adjustment (PAM) module, and the driver device 120 is disposed in the PWM module and / or the PAM module; the circuit structure of the PWM module and the PAM module can be referred to Figure 6 The light-emitting unit 200 includes N light-emitting elements 210 of different light-emitting colors; N is a positive integer. The wiring area 202 includes N pulse width modulation data lines PWM-Data and M amplitude modulation data lines PAM-Data. The pulse width modulation module PWM is electrically connected to the pulse width modulation data lines PWM-Data, and the amplitude modulation module PAM is electrically connected to the amplitude modulation data lines PAM-Data, 1≤M≤N.

[0084] For example, refer to Figures 2-4 ,as well as Figure 6 Taking N=3 as an example, the display panel includes three different driving devices 120, namely a first driving device 121, a second driving device 122, and a third driving device 123. The display panel includes three different light-emitting elements 210 with different light-emitting colors, namely a first light-emitting element 211, a second light-emitting element 212, and a third light-emitting element 213. The wiring area 202 includes three pulse width modulation data lines PWM-Data and three amplitude modulation data lines PAM-Data. In other embodiments, the number of amplitude modulation data lines PAM-Data in the wiring area 202 may be less than three. The three pulse width modulation data lines PWM-Data are electrically connected to the first driving device 121, the second driving device 122, and the third driving device 123, respectively, to provide pulse width data signals to the first driving device 121, the second driving device 122, and the third driving device 123. The three amplitude modulation data lines (PAM-Data) are electrically connected to the first driver device 121, the second driver device 122, and the third driver device 123, respectively, to provide amplitude data signals to the first driver device 121, the second driver device 122, and the third driver device 123.

[0085] For example, refer to Figure 6The pulse width modulation (PWM) module is electrically connected to the pulse width modulation data line PWM-Data. Specifically, the first terminal of the first data writing transistor M12 in the PWM module is electrically connected to the pulse width modulation data line PWM-Data. The amplitude modulation (PAM) module is electrically connected to the amplitude modulation data line PAM-Data. Specifically, the first terminal of the second data writing transistor M2 in the PAM module is electrically connected to the amplitude modulation data line PAM-Data.

[0086] Optionally, refer to Figure 4 or Figure 7 Along the second direction X2, the two sides of the light-emitting unit 200 are respectively a first side and a second side, and / or the two sides of the light-emitting unit group 300 are respectively a first side and a second side, with the first direction X1 intersecting the second direction X2. In the circuit area 203 on the first side, the number of driving devices 120 corresponding to the light-emitting unit 200 or the light-emitting unit group 300 is less than the number of driving devices 120 in the circuit area 203 on the second side. Along the second direction X2, the amplitude modulation data line PAM-Data is located between the circuit area 203 on the first side and the pulse width modulation data line PWM-Data. Along the second direction X2, the pulse width modulation data line PWM-Data is located between the circuit area 203 on the second side and the amplitude modulation data line PAM-Data. The amplitude modulation data line PAM-Data is closer to the first side of the light-emitting unit group 300 or the light-emitting unit 200 than the pulse width modulation data line PWM-Data, and the pulse width modulation data line PWM-Data is closer to the second side of the light-emitting unit group 300 or the light-emitting unit 200 than the amplitude modulation data line PAM-Data. For the same light-emitting unit 200, the amplitude modulation data line PAM-Data is closer to the circuit area 203 of the driving device 120, which has a smaller number of lines, than the pulse width modulation data line PWM-Data.

[0087] Figure 17 This is a partial structural schematic diagram of another display panel provided in an embodiment of the present invention; see reference. Figure 17 The display panel also includes a shift register circuit 260, which provides a scan signal to the driver device 120; the scan signal is used to control the on or off state of the thin-film transistor. Figure 5 In the circuit shown, the scanning signals include the signals on the first scanning signal line SN1, the signals on the second scanning signal line SN2, the signals on the adjustment control signal line SP, and the signals on the light emission control scanning signal line EM. Figure 6In the circuit shown, the scanning signals include signals on the first scan line Scan1, the second scan line Scan2, the third scan line Scan3, the first light emission control signal line Emit1, and the second light emission control signal line Emit2. The shift register circuit 260 is located outside the light-emitting unit setting area 201 and outside the wiring area 202. Perpendicular to the plane of the substrate 110, the shift register circuit 260 does not overlap with the light-emitting element 210. The shift register circuit 260 does not affect the film environment below the bonding position of the light-emitting element 210, and it does not cause inconsistencies in the film environment below the bonding position of the light-emitting element 210, thereby reducing bonding differences between different light-emitting elements 210. This reduces device damage caused by bonding and other subsequent processes. The shift register circuit 260 and the light-emitting element 210 do not overlap. The light-emitting element 210 will not affect the characteristics and operation of the shift register circuit 260. The light-emitting element 210 will not cause characteristic differences of the shift register circuit 260 in different areas, thereby reducing the characteristic differences of different shift register circuits 260 and improving the display effect of the display panel.

[0088] For example, the display panel is borderless, and the shift register circuit 260 is disposed in the display area of ​​the display panel, near the area where the light-emitting unit 200 is located. The shift register circuit 260 is disposed in the compressed area Zi and / or the uncompressed area Nzi of the display panel. The shift register circuit 260 is disposed in the circuit area 203. Along the first direction X1, the shift register circuit 260 overlaps with at least one driving device 120. Along the first direction X1, at least one driving device 120 is disposed between two adjacent shift register circuits 260.

[0089] Figure 18 This is a partial top view of a display panel provided in an embodiment of the present invention; Figure 18 The diagram illustrates a stacked structure formed by a semiconductor layer, a first metal layer, and a second metal layer. Figure 19 for Figure 18 The diagram shows a partial top view of the display panel structure; see reference. Figure 6 , Figure 18 and Figure 19The scan lines (including the first scan line Scan1, the second scan line Scan2, and the third scan line Scan3) extend along the second direction X2. Thin-film transistors are formed at the locations where the scan lines overlap with the semiconductor layer, and the semiconductor layer has channels for the thin-film transistors at these locations. For example, a first gate reset transistor M15 is formed at the location where the first scan line Scan1 overlaps with the semiconductor layer. The first reset signal line VREF1, the first scan line Scan1, the second scan line Scan2, the sweep frequency signal line SWEEP, the first fixed potential signal line VH2, the first light emission control signal line Emit1, the second reset signal line VREF2, the first amplitude scan line PAM-S1, the third scan line Scan3, and the second light emission control signal line Emit2 are located in the first metal layer. The first reset signal line VREF1, the first scan line Scan1, the second scan line Scan2, the sweep frequency signal line SWEEP, the first fixed potential signal line VH2, the first light emission control signal line Emit1, the second reset signal line VREF2, the first amplitude scan line PAM-S1, the third scan line Scan3, and the second light emission control signal line Emit2 extend along the second direction X2 and are arranged along the first direction X1.

[0090] The pulse width modulation (PWM) data line and the amplitude modulation (PAM) data line are located on the second metal layer, and the first metal layer is located between the semiconductor layer and the second metal layer. The PWM data line includes a first PWM data line PWM-Data1, a second PWM data line PWM-Data2, and a third PWM data line PWM-Data3. The PAM data line includes a first amplitude modulation data line PAM-Data1, a second amplitude modulation data line PAM-Data2, and a third amplitude modulation data line PAM-Data3. The first PWM data line PWM-Data1 and the first amplitude modulation data line PAM-Data1 are electrically connected to the first driver device 121. The second PWM data line PWM-Data2 and the second amplitude modulation data line PAM-Data2 are electrically connected to the second driver device 122. The third PWM data line PWM-Data3 and the third amplitude modulation data line PAM-Data3 are electrically connected to the third driver device 123.

[0091] The range of the driving device 120 can be a rectangular area occupied by the semiconductor layer in the driving device 120, or the range of the driving device 120 can be a rectangular area occupied by the location of the thin-film transistor in the driving device 120. The ranges of the first driving device 121, the second driving device 122, and the third driving device 123 are as follows: Figure 18 As shown in the dashed box. For example, refer to... Figure 19In the first driving device 121, the first gate reset transistor M15 is located at the upper edge of the first driving device 121, the first data write transistor M12 and the second data write transistor M2 are located at the left edge of the first driving device 121, the third light-emitting control transistor M1 and the fourth light-emitting control transistor M6 are located at the lower edge of the first driving device 121, and the anode reset transistor M7 is located at the right edge of the first driving device 121. The rectangular area occupied by the thin-film transistors, determined by the positions of the first gate reset transistor M15, the first data write transistor M12, the second data write transistor M2, the third light-emitting control transistor M1, the fourth light-emitting control transistor M6, and the anode reset transistor M7, constitutes the range of the first driving device 121.

[0092] Figure 20 This is a partial top view of another display panel provided in an embodiment of the present invention; Figure 20 The diagram illustrates the structure formed by the third metal layer. Figure 21 This is a partial structural cross-sectional view of a display panel provided in an embodiment of the present invention; Figure 22 This is a partial top view of another display panel provided in an embodiment of the present invention; Figure 22 The structure of the fourth metal layer is illustrated in the diagram, and in Figure 22 The diagram illustrates the light-emitting element 210 in the light-emitting unit 200. A third metal layer is located on the side of the second metal layer away from the first metal layer, and a fourth metal layer is located on the side of the third metal layer away from the second metal layer. The display panel includes a pixel driving circuit, which includes a driving device 120 and a connecting electrode 130. The anode of the light-emitting element 210 is electrically connected to the driving device 120 via the connecting electrode 130; the connecting electrode 130 is located in the light-emitting unit setting area 201.

[0093] By way of example, the anode of the light-emitting element 212 is the first electrode 241 of the light-emitting element 212, and the cathode of the light-emitting element 212 is the second electrode 242 of the light-emitting element 212. In other embodiments, the anode of the light-emitting element 212 is the second electrode 242 of the light-emitting element 212, and the cathode of the light-emitting element 212 is the first electrode 241 of the light-emitting element 212. This is exemplified by using the anode of the light-emitting element 212 as the first electrode 241 and the cathode of the light-emitting element 212 as the second electrode 242. (See reference...) Figures 20-22The anode of the first light-emitting element 211 is electrically connected to one end of the first connecting electrode 131 via a via, and the other end of the first connecting electrode 131 is electrically connected to the first driving device 121 via a via. Similarly, the anode of the second light-emitting element 212 is electrically connected to one end of the second connecting electrode 132 via a via, and the other end of the second connecting electrode 132 is electrically connected to the second driving device 122 via a via. The anode of the third light-emitting element 213 is electrically connected to one end of the third connecting electrode 133 via a via, and the other end of the third connecting electrode 133 is electrically connected to the third driving device 123 via a via.

[0094] For example, the connection electrode 130 is located in the third metal layer, and the connection electrode 130 includes a first connection electrode 131, a second connection electrode 132, and a third connection electrode 133. The anode of the first light-emitting element 211 is electrically connected to the first driving device 121 through the first connection electrode 131, the anode of the second light-emitting element 212 is electrically connected to the second driving device 122 through the second connection electrode 132, and the anode of the third light-emitting element 213 is electrically connected to the third driving device 123 through the third connection electrode 133.

[0095] Exemplarily, the anode and cathode of the light-emitting element 210 are disposed on the same side of the light-emitting element 210. The display panel also includes a cathode pad 142 and an anode pad 141, with multiple light-emitting elements 210 sharing the same cathode pad 142. The cathode pad 142 and the anode pad 141 are disposed in the same layer, located in a fourth metal layer. The anode pad 141 is electrically connected to the driving device 120 via a connecting electrode 130. The anode of the light-emitting element 210 is electrically connected to the anode pad 141, and the cathode of the light-emitting element 210 is electrically connected to the cathode pad 142. In other embodiments, the anode and cathode of the light-emitting element 210 may be disposed on opposite sides of the light-emitting element 210.

[0096] Based on the same inventive concept, embodiments of the present invention also provide a video wall. Figure 23 This is a schematic diagram of a video wall provided in an embodiment of the present invention, such as... Figure 23 As shown, the video wall includes at least two display panels, and the display panels are provided in any embodiment of the present invention. Figure 23 The splicing screen is illustrated by comprising two display panels. The structure of the display panels has been described in the above embodiments and will not be repeated here.

[0097] For example, the display panels in the video wall include a first display panel 310 and a second display panel 320, which are spliced ​​together along a first direction X1. In the first display panel 310 and the second display panel 320, along the first direction X1, the distance between two adjacent light-emitting units 200 is a third distance L3, and the distance between two adjacent light-emitting units 200 located in the first display panel 310 and the second display panel 320 respectively is a fourth distance L4. The third distance L3 is equal to the fourth distance L4, thereby improving the display effect of the video wall.

[0098] Based on the same inventive concept, embodiments of the present invention also provide a display device, which includes the splicing screen provided in any embodiment of the present invention. The display device provided in the embodiments of the present invention can be used for large-screen displays, such as in conference rooms, exhibition halls, billboards, video walls, and other similar settings.

[0099] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A display panel, characterized by, Includes substrate, light-emitting unit placement area, and driving device; The light-emitting unit setting area is used to set light-emitting units, and the light-emitting unit includes at least one light-emitting element; the driving device is located on one side of the substrate, and the driving device is disposed outside the light-emitting unit setting area.

2. The display panel of claim 1, wherein, It includes a light-emitting unit group, wherein the light-emitting unit group includes a plurality of light-emitting units arranged along a first direction; The display panel includes a wiring area, the driving device is disposed outside the wiring area, the wiring area extends along the first direction, and the light-emitting unit group overlaps with at least one of the wiring areas.

3. The display panel of claim 2, wherein, The light-emitting unit area overlaps with the wiring area.

4. The display panel of claim 2, wherein, The light-emitting unit group or the wiring area is provided with circuit areas on both sides along the second direction, and the driving device is located in the circuit area, with the first direction intersecting the second direction.

5. The display panel of claim 1, wherein, It also includes wiring, at least one of the wirings extending along a first direction to form a wiring area, the wiring area being located between two circuit areas, the driving device being located in the circuit area, and the light-emitting unit being disposed along the extension path of the wiring area.

6. The display panel of claim 1 or 4, wherein, The light-emitting element includes a first light-emitting element and a second light-emitting element located in the same light-emitting unit setting area, and the first light-emitting element and the second light-emitting element have different light-emitting colors; the driving device includes a first driving device and a second driving device, the first light-emitting element is electrically connected to the first driving device, and the second light-emitting element is electrically connected to the second driving device; The display panel includes a light-emitting unit group, which includes a plurality of light-emitting units arranged along a first direction; the first driving device and the second driving device are respectively located on different sides of the light-emitting unit group.

7. The display panel of claim 1 or 2, wherein, The two sides of the light-emitting unit are respectively a first side and a second side, and / or the two sides of the light-emitting unit group are respectively a first side and a second side, wherein the number of driving devices corresponding to the light-emitting unit or the light-emitting unit group in the circuit area of ​​the first side is different from the number of driving devices in the circuit area of ​​the second side.

8. The display panel according to claim 4, characterized in that, The two sides of the light-emitting unit are respectively a first side and a second side, and / or the two sides of the light-emitting unit group along the second direction are respectively a first side and a second side, and the light-emitting element electrically connected to the driving device corresponding to the light-emitting unit or the light-emitting unit group in the circuit area of ​​the first side is the first side light-emitting element, and the light-emitting element electrically connected to the driving device corresponding to the light-emitting unit or the light-emitting unit group in the circuit area of ​​the second side is the second side light-emitting element. The number of light-emitting elements on the first side is different from the number of light-emitting elements on the second side.

9. The display panel according to claim 6, characterized in that, It includes a light-emitting unit group, wherein the light-emitting unit group includes a plurality of light-emitting units arranged along a first direction; The first driving device and the second driving device have different widths along the second direction, and the first direction intersects the second direction.

10. The display panel according to claim 9, characterized in that, The first driving device includes a first driving transistor, and the second driving device includes a second driving transistor, wherein the channel width of the first driving transistor is different from the channel width of the second driving transistor.

11. The display panel according to claim 6, characterized in that, The light-emitting element further includes a third light-emitting element; the first light-emitting element emits red light, the second light-emitting element emits green light, and the third light-emitting element emits blue light; the driving device further includes a third driving device, and the third light-emitting element is electrically connected to the third driving device. The second driving device and the third driving device are located on the same side of the light-emitting unit group.

12. The display panel according to claim 11, characterized in that, It includes a light-emitting unit group, wherein the light-emitting unit group includes a plurality of light-emitting units arranged along a first direction; The width of the first driving device along the second direction is greater than or equal to the width of the second driving device along the second direction; The first direction intersects with the second direction; And / or, the width of the first driving device along the second direction is greater than or equal to the width of the third driving device along the second direction.

13. The display panel according to claim 4, characterized in that, The light-emitting unit includes a first light-emitting unit, which is located near the edge of the display panel; The driving device electrically connected to the light-emitting element in the first light-emitting unit is an edge driving device, and along the second direction, the light-emitting element in the first light-emitting unit does not overlap with the edge driving device; Alternatively, the distance between the light-emitting element in the first light-emitting unit and the corresponding edge driving device is greater than the distance between the light-emitting element not in the first light-emitting unit and the corresponding driving device.

14. The display panel according to claim 1, characterized in that, It includes a light-emitting unit group, wherein the light-emitting unit group includes a plurality of light-emitting units arranged along a first direction; The light-emitting elements in the same light-emitting unit include a first light-emitting element, a second light-emitting element, and a third light-emitting element; the first light-emitting element, the second light-emitting element, and the third light-emitting element are arranged along the first direction.

15. The display panel according to claim 1, characterized in that, It includes a light-emitting unit group, wherein the light-emitting unit group includes a plurality of light-emitting units arranged along a first direction; The light-emitting elements in the same light-emitting unit include a first light-emitting element, a second light-emitting element, and a third light-emitting element; The second light-emitting element and the third light-emitting element are arranged along the second direction, and the first direction intersects the second direction; The first light-emitting element is located on one side of the second and third light-emitting elements along the first direction and overlaps with the gap between the second and third light-emitting elements.

16. The display panel according to claim 1, characterized in that, It includes a light-emitting unit group, wherein the light-emitting unit group includes a plurality of light-emitting units arranged along a first direction; The length of the light-emitting element along the first direction is greater than its length along the second direction; or, the length of the light-emitting element along the first direction is less than its length along the second direction; the first direction intersects the second direction; And / or, the same light-emitting element includes a first electrode and a second electrode, the first electrode and the second electrode being disposed opposite each other along a third direction, the third direction being parallel to the first direction, or the third direction being parallel to the second direction.

17. The display panel according to claim 1, characterized in that, The light-emitting unit setting area also includes redundant positions for light-emitting elements, which are used to set up light-emitting elements for repair.

18. The display panel according to claim 14, characterized in that, The length of the light-emitting element along the first direction is less than its length along the second direction; the first direction intersects the second direction. And / or, the same light-emitting element includes a first electrode and a second electrode, the first electrode and the second electrode being disposed opposite each other along a third direction, the third direction being parallel to the second direction.

19. The display panel according to claim 14, characterized in that, The length of the light-emitting element along the first direction is greater than the length along the second direction; the first direction intersects the second direction; and / or, the same light-emitting element includes a first electrode and a second electrode, the first electrode and the second electrode are arranged opposite to each other along a third direction, the third direction being parallel to the first direction; The light-emitting unit setting area also includes multiple redundant positions for light-emitting elements. The redundant positions for light-emitting elements are used to set light-emitting elements for repair. The multiple redundant positions for light-emitting elements are arranged along the first direction. The light-emitting elements and the redundant positions for light-emitting elements are arranged along the second direction.

20. The display panel according to claim 15, characterized in that, The length of the light-emitting element along the first direction is less than its length along the second direction; the first direction intersects the second direction. And / or, the same light-emitting element includes a first electrode and a second electrode, the first electrode and the second electrode being disposed opposite each other along a third direction, the third direction being parallel to the second direction.

21. The display panel according to claim 15, characterized in that, The length of the light-emitting element along the first direction is less than the length along the second direction; the first direction intersects the second direction; and / or, the same light-emitting element includes a first electrode and a second electrode, the first electrode and the second electrode are arranged opposite to each other along a third direction, the third direction being parallel to the second direction; Along the first direction, adjacent light-emitting elements overlap with redundant positions of the light-emitting elements.

22. The display panel according to claim 15, characterized in that, The length of the light-emitting element along the first direction is greater than the length along the second direction; the first direction intersects the second direction; and / or, the same light-emitting element includes a first electrode and a second electrode, the first electrode and the second electrode are arranged opposite to each other along a third direction, the third direction being parallel to the first direction; Along the second direction, adjacent light-emitting elements overlap with redundant positions of the light-emitting elements.

23. The display panel according to claim 15, characterized in that, The driving device includes a first driving device, a second driving device and a third driving device, wherein the first driving device is electrically connected to the first light-emitting element, the second driving device is electrically connected to the second light-emitting element, and the third driving device is electrically connected to the third light-emitting element. The display panel includes a light-emitting unit group, which includes a plurality of light-emitting units arranged along a first direction; the two sides of the light-emitting unit are a first side and a second side, and / or the two sides of the light-emitting unit group along the second direction are a first side and a second side, the second driving device is located on the first side, the first driving device and the third driving device are located on the second side, and the second light-emitting element is closer to the first side than the third light-emitting element.

24. The display panel according to claim 23, characterized in that, The first light-emitting element emits green light, the second light-emitting element emits red light, and the third light-emitting element emits blue light; Alternatively, the first light-emitting element emits blue light, the second light-emitting element emits red light, and the third light-emitting element emits green light.

25. The display panel according to claim 15, characterized in that, The driving device includes a first driving device, a second driving device and a third driving device, wherein the first driving device is electrically connected to the first light-emitting element, the second driving device is electrically connected to the second light-emitting element, and the third driving device is electrically connected to the third light-emitting element. The display panel includes a light-emitting unit group, which includes a plurality of light-emitting units arranged along a first direction; the second driving device and the third driving device are located on the same side of the light-emitting unit group, and along the second direction, the second driving device is located between the light-emitting unit group and the third driving device, or the third driving device is located between the light-emitting unit group and the second driving device.

26. The display panel according to claim 2, characterized in that, The light-emitting unit group or the wiring area is provided with circuit areas on both sides along the second direction, and the driving device is located in the circuit area, with the first direction intersecting the second direction; At least two of the driving devices in the same circuit area are respectively connected to the light-emitting elements in the light-emitting unit setting area on both sides of the circuit area.

27. The display panel according to claim 1, characterized in that, The light-emitting unit group includes a plurality of light-emitting units arranged along a first direction; the two sides of each light-emitting unit are a first side and a second side, and / or the two sides of the light-emitting unit group along a second direction are a first side and a second side, respectively; the first direction intersects the second direction. The distance from the light-emitting unit to the driving device on the first side is a first distance, and the distance from the light-emitting unit to the driving device on the second side is a second distance. The first distance and the second distance are different.

28. The display panel according to claim 27, characterized in that, The first distance is greater than 5 micrometers, and the second distance is greater than 5 micrometers.

29. The display panel according to claim 2, characterized in that, It also includes wiring, which includes data lines that extend along the first direction and are located in the wiring area.

30. The display panel according to claim 29, characterized in that, It includes a pulse width modulation module and / or an amplitude adjustment module, wherein the driving device is disposed in the pulse width modulation module and / or the amplitude adjustment module; The light-emitting unit includes N light-emitting elements of different light-emitting colors; The routing area includes N pulse width modulation data lines and M amplitude modulation data lines. The pulse width modulation module is electrically connected to the pulse width modulation data lines, and the amplitude modulation module is electrically connected to the amplitude modulation data lines, where 1 ≤ M ≤ N.

31. The display panel according to claim 30, characterized in that, Along the second direction, the two sides of the light-emitting unit are respectively a first side and a second side, and / or the two sides of the light-emitting unit group are respectively a first side and a second side, and the first direction intersects the second direction; in the circuit area of ​​the first side, the number of driving devices corresponding to the light-emitting unit or the light-emitting unit group is less than the number of driving devices in the circuit area of ​​the second side; The amplitude modulation data line is located between the circuit area on the first side and the pulse width modulation data line.

32. The display panel according to claim 2, characterized in that, It also includes a shift register circuit, which provides a scan signal to the driving device; The shift register circuit is located outside the light-emitting unit setting area and outside the wiring area.

33. A video wall, characterized in that, It includes at least two display panels as described in any one of claims 1-32.

34. A display device, characterized in that, Including the splicing screen as described in claim 33.

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