Display panel and tiled display device

Abstract

Embodiments of the present application provide a display panel and a spliced display device; the display panel comprises a first display area and a second display area, the second display area is arranged on at least one side of the first display area, and the display panel comprises a light emitting device and a pixel circuit for driving the light emitting device. In the embodiments of the present application, the light emitting device located in the second display area is arranged on the side away from the first display area corresponding to the pixel circuit, so that there is space in the second display area to arrange other wirings and circuit structures, so that the circuit and the wiring in the frame can be arranged in the second display area, thereby reducing the frame, and when a plurality of display panels are spliced, the joint gap can be reduced.

Description

Technical Field

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

[0002] To achieve large-screen displays, current display devices often combine multiple display panels. Because display panels have bezels, a large bezel appears at the joint between two panels, resulting in a seam.

[0003] Therefore, existing splicing display devices have the technical problem of large splicing gaps. Summary of the Invention

[0004] This application provides a display panel and a splicing display device to solve the technical problem of large seams in existing splicing display devices.

[0005] To achieve the above objectives, according to a first aspect of this application, a display panel is provided, the display panel including a first display area and a second display area, the second display area being disposed on at least one side of the first display area, the display panel including a light-emitting device and a pixel circuit for driving the light-emitting device; The light-emitting device located in the second display area is disposed on the side of the corresponding pixel circuit away from the first display area.

[0006] According to a second aspect of this application, a display device is provided, the display device comprising a plurality of display panels as described in any of the above embodiments, the plurality of display panels being spliced ​​together.

[0007] This application provides a display panel and a splicing display device. The display panel includes a first display area and a second display area, with the second display area disposed on at least one side of the first display area. The display panel includes light-emitting devices and pixel circuits for driving the light-emitting devices. In this application embodiment, by placing the light-emitting devices located in the second display area on a side of the corresponding pixel circuits away from the first display area, space is created within the second display area for other wiring and circuit structures. This allows the circuits and wiring in the bezel to be placed within the second display area, thereby reducing the bezel size and minimizing the seam width when multiple display panels are spliced.

[0008] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0010] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0011] Figure 1 This is a schematic diagram of various contrast display devices provided in the embodiments of this application.

[0012] Figure 2 This is a first schematic diagram of a display panel provided in an embodiment of this application.

[0013] Figure 3 This is a second schematic diagram of a display panel provided in an embodiment of this application.

[0014] Figure 4 This is a third schematic diagram of a display panel provided in an embodiment of this application.

[0015] Figure 5 This is a first schematic diagram of the arrangement of pixel circuits and light-emitting devices in a display panel provided in an embodiment of this application.

[0016] Figure 6 for Figure 5 A schematic diagram of the light-emitting devices and connecting lines of the display panel.

[0017] Figure 7 This is a second schematic diagram showing the arrangement of pixel circuits and light-emitting devices in a panel provided in an embodiment of this application.

[0018] Figure 8 for Figure 7 A schematic diagram of the light-emitting devices and connecting lines of the display panel.

[0019] Figure 9 This is a third schematic diagram showing the arrangement of pixel circuits and light-emitting devices in a panel provided in an embodiment of this application.

[0020] Figure 10 for Figure 9 A schematic diagram of the light-emitting devices and connecting lines of the display panel.

[0021] Figure 11 This is a fourth schematic diagram showing the arrangement of pixel circuits and light-emitting devices in a panel provided in an embodiment of this application.

[0022] Figure 12 for Figure 11 A schematic diagram of the light-emitting devices and connecting lines of the display panel.

[0023] Figure 13 This is a schematic diagram showing the arrangement of pixel circuits, light-emitting devices, and connecting lines of a panel provided in an embodiment of this application.

[0024] Figure 14 This is a fourth schematic diagram of a display panel provided in an embodiment of this application.

[0025] Figure 15 This is a schematic diagram of multiple light-emitting devices and connecting lines provided in the embodiments of this application.

[0026] Figure 16 This is a circuit diagram of the pixel circuit provided in an embodiment of this application.

[0027] Explanation of reference numerals in the attached figures: 101. Display area; 102. Non-display area; 2. Display panel; 201. First display area; 202. Second display area; 203. Left splicing area; 204. Right splicing area; 205. Special module area; 206. Upper splicing area; 207. Lower splicing area; 21. Light-emitting device; 21a. First electrode; 21b. Second electrode; 211. First type of light-emitting unit; 212. Second type of light-emitting unit; 213. Third type of light-emitting unit. 22. Optical unit; 23. Pixel circuit; 24. Connecting line; 25. First connecting trace; 26. Second connecting trace; 27. Third connecting trace; 28. Adapter line; 29. ​​Gate driving circuit; 30. Second source-drain layer; 31. Third source-drain layer; 32. Fourth source-drain layer; 32. First via; 32. Second via; 32. Third via; X, First direction; Y, Second direction; VSS, Low-potential power line. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0029] In order to illustrate the principle of the technical problems in the embodiments of this application, some comparative display devices are provided. It should be understood that these comparative display devices cannot be regarded as prior art in the embodiments of this application. Figure 1 The structure of a single display panel 2 and a spliced ​​display panel 2 is shown in the diagram. For example... Figure 1As shown in (a), in the comparative display device, a single display panel 2 includes a display area 101 and a non-display area 102. Since the display panel 2 needs to be driven by a gate drive circuit 25, and some drive lines need to be placed in the non-display area 102, the area of ​​the non-display area 102 of the display panel 2 is relatively large.

[0030] like Figure 1 As shown in (b), a contrast display device is a horizontal splicing of two display panels 2. Since the non-display area 102 of a single display panel 2 is relatively large, after the contrast display device splices the two display panels 2 horizontally, the non-display areas 102 of the two display panels 2 are connected together, resulting in a larger area of ​​the non-display area 102 in the middle of the contrast display device, which presents a horizontal seam when displayed.

[0031] like Figure 1 As shown in (c), a contrast display device is a horizontal splicing of two display panels 2. Since the non-display area 102 of a single display panel 2 is relatively large, after the contrast display device splices the two display panels 2 vertically, the non-display areas 102 of the two display panels 2 are connected together, resulting in a larger area of ​​the non-display area 102 in the middle of the contrast display device, which presents a vertical seam when displayed.

[0032] like Figure 1 As shown in (d), a contrast display device splices four display panels 2 horizontally and vertically. Because the non-display area 102 of a single display panel 2 is relatively large, after splicing the four display panels 2 horizontally and vertically, the non-display areas 102 of adjacent display panels 2 are connected together, resulting in a larger area of ​​the non-display area 102 in the middle of the contrast display device, which presents horizontal and vertical seams during display. From Figure 1 As can be seen, regardless of whether the comparison display devices are spliced ​​horizontally or vertically, and regardless of the number of spliced ​​display devices, there will always be noticeable seams in the comparison display devices. Therefore, existing spliced ​​display devices have a technical problem of large seams.

[0033] This application provides a display panel 2 and a splicing display device to address the aforementioned technical problems.

[0034] In some embodiments, the display panel 2 includes a first display area 201 and a special module area 205. Functional elements, such as touch sensors and fingerprint sensors, can be disposed in the special module area 205. The display panel 2 can be driven by a gate driver chip, without the need to set up a gate driver circuit 25.

[0035] Specifically, the special module area 205 can be the second display area 202.

[0036] In some embodiments, such as Figure 14 As shown, the display panel 2 includes a first display area 201, a left splicing area 203 and a special module area 205. The left splicing area 203 is disposed on the left side of the display panel 2 along the first direction X. Functional elements and / or driving circuits can be disposed in the special module area 205, and light-emitting devices 21 can be disposed in the special module area 205 and the left splicing area 203.

[0037] In some embodiments, such as Figure 2 As shown, the display panel 2 includes a first display area 201, a left splicing area 203, a right splicing area 204, and a special module area 205. The special module area 205 is disposed between the two first display areas 201. The left splicing area 203 is disposed on the left side of the display panel 2 along the first direction X, and the right splicing area 204 is disposed on the right side of the display panel 2 along the first direction X. Functional elements and / or driving circuits can be disposed in the special module area 205. Light-emitting devices 21 can be disposed in the special module area 205, the left splicing area 203, and the right splicing area 204.

[0038] Specifically, such as Figure 2 As shown, each light-emitting device 21 includes a first electrode 21a and a second electrode 21b. The first electrode 21a of each light-emitting device 21 can be arranged along the first direction X, and the second electrode 21b of each light-emitting device 21 can be arranged along the second direction Y. This will not be repeated in the following embodiments.

[0039] Specifically, the first type of light-emitting unit 211, the second type of light-emitting unit 212, and the third type of light-emitting unit 213 are light-emitting devices with different light-emitting colors.

[0040] Specifically, such as Figure 2 As shown, the light-emitting device 21 includes a first type of light-emitting unit 211, a second type of light-emitting unit 212, and a third type of light-emitting unit 213 with different light-emitting colors. One of the first type of light-emitting unit 211, the second type of light-emitting unit 212, and the third type of light-emitting unit 213 emits red light, another of the first type of light-emitting unit 211, the second type of light-emitting unit 212, and the third type of light-emitting unit 213 emits green light, and the remaining one of the first type of light-emitting unit 211, the second type of light-emitting unit 212, and the third type of light-emitting unit 213 emits blue light. For example, the light-emitting colors of the first type of light-emitting unit 211, the second type of light-emitting unit 212, and the third type of light-emitting unit 213 are red, green, and blue, respectively.

[0041] Specifically, the accompanying drawings in this application embodiment are illustrated with an example where the angle between the first direction X and the second direction Y is 90 degrees. However, this application embodiment is not limited to this. For example, the angle between the first direction X and the second direction Y may be 85 degrees, 80 degrees, 75 degrees, 70 degrees, etc., which are not limited here.

[0042] In some embodiments, such as Figure 3 As shown, the display panel 2 includes a first display area 201, an upper splicing area 206, and a lower splicing area 207. The upper splicing area 206 is disposed on the upper side of the display panel 2 along the second direction Y, and the lower splicing area 207 is disposed on the lower side of the display panel 2 along the second direction Y. Light-emitting devices 21 can be disposed in the upper splicing area 206 and the lower splicing area 207.

[0043] In some embodiments, such as Figure 4 As shown, the display panel 2 includes a first display area 201, a left splicing area 203, a right splicing area 204, an upper splicing area 206, and a lower splicing area 207. The left splicing area 203 is located on the left side of the display panel 2 along the first direction X, the right splicing area 204 is located on the right side of the display panel 2 along the first direction X, the upper splicing area 206 is located on the upper side of the display panel 2 along the second direction Y, and the lower splicing area 207 is located on the lower side of the display panel 2 along the second direction Y. Light-emitting devices 21 can be disposed in the upper splicing area 206 and the lower splicing area 207.

[0044] Specifically, Figure 2 The following description uses a display panel 2 comprising a first display area 201, a left splicing area 203, a right splicing area 204, and a special module area 205 as an example. However, the embodiments of this application are not limited to this. The display panel 2 may include only one or both of the first display area 201, the left splicing area 203, the right splicing area 204, and the special module area 205. For example, the display panel 2 includes a first display area 201 and a left splicing area 203. Correspondingly, the display panel 2 may also include a right frame area located on the right side of the display panel 2. No light-emitting device 21 is disposed in the right frame area, which exists as a non-display area. In another example, the display panel 2 includes a first display area 201 and a special module area 205. The special module area 205 is provided with a gate driving circuit 25. The first display area 201 of the display panel 2 is located at the edge of the display panel 2, and due to the presence of the pixel circuit 22, there will be a certain border.

[0045] Specifically, Figure 3The following description uses a display panel 2 comprising a first display area 201, an upper splicing area 206, and a lower splicing area 207 as an example. However, the embodiments of this application are not limited to this. The display panel 2 may also include a special module area 205, which may be disposed between the first display areas 201 and may overlap with the upper splicing area 206 and the lower splicing area 207. Alternatively, the display panel 2 may include only one or both of the first display area 201, the upper splicing area 206, the lower splicing area 207, and the special module area 205. For example, the display panel 2 includes a first display area 201 and an upper splicing area 206. Correspondingly, the display panel 2 may also include a lower border area located on the lower side of the display panel 2. No light-emitting device 21 is disposed in the lower border area, which exists as a non-display area.

[0046] Specifically, Figure 4 The following description uses a display panel 2 comprising a first display area 201, a left splicing area 203, a right splicing area 204, an upper splicing area 206, and a lower splicing area 207 as an example. However, the embodiments of this application are not limited to this. The display panel 2 may also include a special module area 205, which may be located between the first display areas 201 and may overlap with the upper splicing area 206 and the lower splicing area 207. Alternatively, the display panel 2 may include only one or both of the first display area 201, the left border area, the right border area, the upper splicing area 206, the lower splicing area 207, and the special module area 205. For example, the display panel 2 includes the first display area 201 and the upper splicing area 206. Correspondingly, the display panel 2 may also include a lower border area located on the lower side of the display panel 2, in which no light-emitting device 21 is disposed, existing as a non-display area.

[0047] Specifically, it can be understood that each splicing area is provided with a light-emitting device 21, and the pixel circuit 22 corresponding to the light-emitting device 21 is closer to the first display area 201 than the light-emitting device 21. When the edge of the display panel 2 is the light-emitting device 21, the border of the display panel 2 is extremely small or even has no border. Moreover, when displaying, since the light-emitting device 21 has a certain light-emitting angle, it can be regarded as borderless.

[0048] Specifically, when no splicing area is set at the edge of the display panel 2, a border area can be set. For example, if the display panel 2 has a first display area 201 and a left splicing area 203, then the upper, lower and right sides of the display panel 2 can be set with border areas, and the light-emitting device 21 can be omitted in the border area.

[0049] Specifically, the second display area 202 can be one or more of the following: the upper splicing area 206, the lower splicing area 207, the left splicing area 203, the right splicing area 204, and the special module area 205. It is understood that the above embodiments have provided detailed descriptions of some area designs for the display panel 2. While minimizing the bezel, features or embodiments can be adapted to be combined. For example, the display panel 2 includes a first display area 201, a left splicing area 203, an upper bezel area, a lower bezel area, and a right bezel area. The left splicing area 203 contains a light-emitting device 21, the upper bezel area contains wiring, the lower bezel area contains wiring, and the right bezel area contains wiring and a gate driving circuit 25; further details will not be elaborated here.

[0050] like Figures 2 to 16 As shown, this application embodiment provides a display panel 2, which includes a first display area 201 and a second display area 202. The second display area 202 is disposed on at least one side of the first display area 201. The display panel 2 includes a light-emitting device 21 and a pixel circuit 22 for driving the light-emitting device 21. The pixel circuit 22 located in the second display area 202 is disposed on the side of the corresponding light-emitting device 21 close to the first display area 201.

[0051] This application provides a display panel 2. By placing the pixel circuit 22 located in the second display area 202 on the side of the corresponding light-emitting device 21 close to the first display area 201, the second display area 202 has space to set other wiring and circuit structures. This allows the circuits and wiring in the bezel to be placed in the second display area 202, thereby reducing the bezel size. When multiple display panels 2 are spliced ​​together, the splicing seam can be reduced.

[0052] like Figures 2 to 16 As shown, this application embodiment provides a display panel 2, which includes a first display area 201 and a second display area 202. The second display area 202 is disposed on at least one side of the first display area 201. The display panel 2 includes a light-emitting device 21 and a pixel circuit 22 for driving the light-emitting device 21. The light-emitting device 21 located in the second display area 202 is disposed on the side of the corresponding pixel circuit 22 away from the first display area 201.

[0053] This application provides a display panel in which the light-emitting device 21 located in the second display area 202 is disposed on the side of the corresponding pixel circuit 22 away from the first display area 201, so that there is space in the second display area 202 to set other wiring and circuit structures. This allows the circuits and wiring in the bezel to be placed in the second display area 202, thereby reducing the bezel size. When multiple display panels 2 are spliced ​​together, the splicing gap can be reduced.

[0054] Specifically, it can be understood that each light-emitting device 21 is driven by a pixel circuit 22, and the light-emitting device 21 is connected to the pixel circuit 22. Therefore, the light-emitting device 21 corresponding to the pixel circuit 22 refers to the light-emitting device 21 connected to the pixel circuit 22, and the pixel circuit 22 corresponding to the light-emitting device 21 refers to the pixel circuit 22 connected to the light-emitting device 21.

[0055] Specifically, when the light-emitting device 21 located in the second display area 202 is positioned on the side of the corresponding pixel circuit 22 away from the first display area 201, the pixel circuit connected to the light-emitting device 21 in the second display area 202 may be located within the first display area 201, or even below the light-emitting device in the first display area 201. Alternatively, the pixel circuit connected to the light-emitting device 21 in the second display area 202 may be located within the second display area 202.

[0056] Specifically, in the comparison display device, since the pixels and pixel circuits 22 in each area of ​​the display area 101 are arranged in the same way, the pixel circuits 22 and pixels in the display area 101 of the display panel 2 are all arrayed, and there is no space to set up the gate driving circuit 25 and other wiring. The gate driving circuit 25 and wiring can only be set in the non-display area 102, resulting in a large area of ​​the non-display area 102 and a large bezel in the comparison display device. When the comparison display device is formed by splicing multiple display panels 2, a large seam occurs. In this embodiment, by setting a second display area 202, the pixel circuits 22 in the second display area 202 are set closer to the first display area 201 than the light-emitting device 21, so that the circuits or other structures in the non-display area 102 can be set closer to the display area, and / or, there is a region in the display area where the circuits or other structures in the non-display area 102 are set, thereby reducing the bezel.

[0057] Specifically, in this embodiment of the application, by setting a second display area 202, the light-emitting device 21 in the second display area 202 is further away from the first display area 201 than the pixel circuit, so that the circuit or other structure in the non-display area 102 can be set closer to the display area, and / or, there is a region in the display area where the circuit or other structure in the non-display area 102 is set, thereby reducing the bezel.

[0058] For example, if the second display area 202 is the left splicing area 203, and the pixel circuit 22 in the left splicing area 203 is set on the side of the corresponding light-emitting device 21 close to the first display area 201, then the gate driving circuit 25 can be set closer to the light-emitting device 21 in the left splicing area 203, or even the gate driving circuit 25 can be set in the left splicing area 203. The light-emitting device 21 in the left splicing area 203 can emit light normally, thereby reducing or even eliminating the bezel.

[0059] For example, if the light-emitting device 21 in the left splicing area 203 is farther away from the first display area 201 than the pixel circuit, the gate driving circuit 25 can be set closer to the light-emitting device 21 in the left splicing area 203, or even set in the left splicing area 203. The light-emitting device 21 in the left splicing area 203 can emit light normally, thereby reducing or even eliminating the border.

[0060] In another example, the second display area 202 is a special module area 205. The pixel circuit 22 in the special module area 205 is set in the corresponding light-emitting device 21 close to the first display area 201. Then, there is a certain area in the special module area 205 where other structures are set. At this time, the gate driving circuit 25 and some traces located in the non-display area 102 can be set in the special module area 205, thereby eliminating the non-display area 102 where the gate driving circuit 25 and some traces are set, reducing the bezel or even eliminating the bezel.

[0061] In some embodiments, such as Figure 5 , Figure 6 , Figure 9 , Figure 10 , Figure 13 As shown, the second display area 202 is disposed on the side of the first display area 201 near the edge of the display panel 2. By disposing the second display area 202 on the side of the first display area 201 near the edge of the display panel 2, and by disposing the pixel circuit 22 within the second display area 202 close to the first display area 201, the edge of the display panel 2 is provided with light-emitting devices 21 instead of driving circuits, resulting in a borderless effect during display, thereby reducing or even eliminating seams.

[0062] Specifically, compared to contrast display devices where structures such as the gate driving circuit 25 are located at the edge of the display panel 2, resulting in a larger bezel and a larger seam during splicing, this embodiment addresses this issue by placing the second display area 202 on the side of the first display area 201 near the edge of the display panel 2, and placing the light-emitting device 21 within the second display area 202 on the side of the pixel circuit 22 away from the first display area 201. This allows the gate driving circuit 25 to be placed closer to the display area, or even within the second display area 202, thereby reducing the bezel size.

[0063] Specifically, compared to some display devices that place structures such as the gate driving circuit 25 within the display area, the pixel circuit 22 is closer to the edge of the display panel 2 than the light-emitting device 21, resulting in a border still existing at the edge of the display device. In this embodiment, the light-emitting device 21 is placed on the side of the pixel circuit 22 away from the first display area 201, so that the edge of the display panel 2 is the light-emitting device 21 instead of the pixel circuit 22, thereby reducing or even eliminating the border.

[0064] In some embodiments, the second display area 202 may be one or more of the left splicing area 203, the right splicing area 204, the upper splicing area 206, and the lower splicing area 207; thereby reducing or even eliminating the bezels on one or more sides of the display panel 2.

[0065] Specifically, the second display area 202 can be a left-side splicing area 203; or a right-side splicing area 204; or an upper-side splicing area 206; or a lower-side splicing area 207.

[0066] Specifically, such as Figure 5 , Figure 6 , Figure 9 , Figure 10 As shown, the second display area 202 is located on the left edge of the display panel 2. The second display area 202 can serve as the edge area of ​​the display panel 2, thereby reducing the bezel and reducing or even eliminating the seam during splicing.

[0067] Specifically, the display panel 2 can also include multiple second display areas 202, one second display area 202 being a left splicing area 203 and another second display area 202 being a right splicing area 204; or one second display area 202 being an upper splicing area 206 and another second display area 202 being a lower splicing area 207; or the second display area 202 can be three of the following areas: left splicing area 203, right splicing area 204, upper splicing area 206, and lower splicing area 207; or one second display area 202 can be a left splicing area 203, one second display area 202 being a right splicing area 204, one second display area 202 being an upper splicing area 206, and one second display area 202 being a lower splicing area 207.

[0068] Specifically, such as Figure 14 As shown, the left splicing area 203 is located on the left edge of the display panel, the right splicing area 204 is located on the right edge of the display panel, the upper splicing area 206 is located on the upper edge of the display panel, and the lower splicing area 207 is located on the lower edge of the display panel. This reduces the bezels on all four sides of the display panel, reduces or even eliminates the splicing seams.

[0069] In some embodiments, such as Figure 7 , Figure 8 , Figure 11 , Figure 12 As shown, the display panel 2 includes multiple first display areas 201, and second display areas 202 are disposed between adjacent first display areas 201. A gate driving circuit 25 is provided within the second display area 202. By placing the second display area 202 within an adjacent first display area 201, and providing the gate driving circuit 25 within the second display area 202, the gate driving circuit 25 can be placed within the display area, thereby reducing or even eliminating the bezel of the display panel 2. This reduces or even eliminates the seam when the display panels 2 are spliced.

[0070] Specifically, the second display area 202 can be a special module area 205, in which functional components, such as touch sensors, can be placed.

[0071] Specifically, compared to placing the gate driving circuit 25 in the non-display area 102, in this embodiment, the pixel circuit 22 in the second display area 202 is placed closer to the light-emitting device 21 than the first display area 201, so that there is free space in the second display area 202, and the gate driving circuit 25 can be placed in the second display area 202, thereby reducing the bezel of the display panel 2 and eliminating the seam when splicing the display panels 2.

[0072] Specifically, in the embodiments of this application, the gate driving circuit 25 may refer to the transistors, capacitors, and connection traces in the gate driving circuit 25. For example, the gate driving circuit 25 refers to the components therein, excluding the signal lines connected to the components in the gate driving circuit 25, such as excluding clock signal lines. The gate driving circuit 25 may also refer to the transistors, capacitors, connection traces, and driving lines in the gate driving circuit 25. For example, the gate driving circuit 25 refers to the components in the gate driving circuit 25 and the signal lines connected to the components. For example, the gate driving circuit 25 includes clock signal lines.

[0073] Specifically, such as Figure 7 As shown, the second display area 202 is located between the adjacent first display area 201. A gate driving circuit 25 can be set in the second display area 202 to reduce the bezel. However, the embodiments of this application are not limited to this. For example, only a part of the traces can be moved to the second display area 202, and the gate driving circuit 25 can be set in the non-display area or the left splicing area and the right splicing area.

[0074] In some embodiments, such as Figure 2 , Figure 14 As shown, the display panel 2 includes multiple first display areas 201 and multiple second display areas 202. Some of the second display areas 202 are disposed between adjacent first display areas 201, and some of the second display areas 202 are disposed on the side of the first display areas 201 near the edge of the display panel 2. A gate driving circuit 25 is provided in each of the second display areas 202. By including multiple second display areas 202 in the display panel 2, and disposing of some of the second display areas 202 on the side of the first display areas 201 near the edge of the display panel 2, and disposing of some of the second display areas 202 between the first display areas 201, and providing a gate driving circuit 25 in each of the second display areas 202, the bezel of the display panel 2 can be reduced, or even eliminated, thereby reducing or even eliminating the seam when the display panels 2 are spliced.

[0075] For example, the display panel 2 can include three second display areas 202, one second display area 202 being a left splicing area 203, one second display area 202 being a right splicing area 204, and one second display area 202 being a special module area 205. This can reduce or even eliminate the left and right borders of the display panel 2, thereby reducing or even eliminating the splicing seam when the display panel 2 is spliced.

[0076] In some embodiments, such as Figure 6 , Figure 8 , Figure 10 , Figure 12 , Figure 13 , Figure 15As shown, the display panel 2 includes a connecting line 23. One end of the connecting line 23 is connected to the first electrode 21a of the light-emitting device 21, and the other end of the connecting line 23 is connected to the pixel circuit 22. The length of the connecting line 23 located in the second display area 202 is greater than the length of the corresponding connecting line 23 located in the first display area 201. By making the length of the connecting line 23 in the second display area 202 greater than the length of the corresponding connecting line 23 in the first display area, when the pixel circuit 22 in the second display area 202 is positioned close to the light-emitting device 21 in the first display area 201, the light-emitting device 21 and the pixel circuit 22 can be connected via the connecting line 23, enabling the normal operation of the light-emitting device 21.

[0077] Specifically, the length of the connecting line 23 located in the second display area 202 being greater than the length of the corresponding connecting line 23 located in the first display area 201 means that the length of the connecting line 23 in the second display area 202 connecting the light-emitting device 21 is greater than the length of the connecting line 23 in the first display area 201 connecting the light-emitting device 21 of the same light-emitting color. For example, both the first display area 201 and the second display area 202 are provided with a first type of light-emitting unit 211, which can make the length of the connecting line 23 in the second display area 202 connecting the first type of light-emitting unit 211 greater than the length of the connecting line 23 in the first display area 201 connecting the first type of light-emitting unit 211. This will not be elaborated further here.

[0078] Specifically, the length of the connecting line 23 refers to the sum of the lengths of its various parts. For example, if the connecting line 23 includes a part located in the first source-drain layer and a part located in the second source-drain layer 312, then the length of the connecting line 23 is the sum of the lengths of the part of the connecting line located in the first source-drain layer and the part of the connecting line located in the second source-drain layer. Similarly, when the connecting line 23 is designed in other ways, the length of the connecting line 23 can be determined.

[0079] Specifically, when making the length of one connecting line greater than the length of another connecting line, the portion of the connecting line located in a certain film layer can be greater than the portion of the other connecting line located in a certain film layer, or the length of the portion of the connecting line located in multiple film layers can be greater than the length of the portion of the other connecting line located in the corresponding film layer.

[0080] For example, if the length of the connecting line 23 located in the second display area 202 is greater than the length of the corresponding connecting line 23 located in the first display area 201, and the connecting line located in the second display area 202 is named the second connecting line and the connecting line located in the first display area 201 is named the first connecting line, then the portion of the second connecting line located in the third source-drain layer can be greater than the portion of the first connecting line located in the third source-drain layer. Similarly, the portion of the second connecting line located in the third source-drain layer can be greater than the portion of the first connecting line located in the third source-drain layer, and the portion of the second connecting line located in the second source-drain layer can be greater than the portion of the first connecting line located in the second source-drain layer. Likewise, other designs can be adopted, which will not be elaborated here.

[0081] Specifically, compared to the pixel circuit 22 in the first display area 201 being located below the corresponding light-emitting device 21, the pixel circuit 22 in the second display area 202 can be made to not overlap with the corresponding light-emitting device 21. The light-emitting device 21 and the corresponding pixel circuit 22 are connected by the connecting line 23, so that a part of the second display area 202 of the display panel 2 is not provided with pixel circuit 22. This allows for the provision of other structures or the use of light-emitting devices 21 at the edge of the display panel 2, thereby reducing the bezel size. When splicing the display panels 2, the seam size can be reduced or even eliminated.

[0082] Specifically, such as Figure 6 , Figure 8 , Figure 10 , Figure 12 , Figure 13 , Figure 15 As shown, the connecting line 23 includes a first connecting line 231, a second connecting line 232 and a third connecting line 233. The first connecting line 231 is connected to the first type of light-emitting unit 211, the second connecting line 232 is connected to the second type of light-emitting unit 212, and the third connecting line 233 is connected to the third type of light-emitting unit 213.

[0083] Specifically, such as Figure 6 As shown, within the first display area 201, the lengths of the connecting lines connected to the multiple first-type light-emitting units 211 can be equal, the lengths of the connecting lines connected to the multiple second-type light-emitting units 212 can be equal, and the lengths of the connecting lines connected to the multiple third-type light-emitting units 213 can be equal.

[0084] At the same time, such as Figure 6 , Figure 10 , Figure 15As shown, the length of the connecting line connected to the first type of light-emitting unit 211 in the left splicing area 203 is greater than the length of the connecting line connected to the first type of light-emitting unit 211 in the first display area 201. The length of the connecting line connected to the second type of light-emitting unit 212 in the left splicing area 203 is greater than the length of the connecting line connected to the second type of light-emitting unit 212 in the first display area 201. The length of the connecting line connected to the third type of light-emitting unit 213 in the left splicing area 203 is greater than the length of the connecting line 23 connected to the third type of light-emitting unit 213 in the first display area 201.

[0085] Specifically, such as Figure 8 , Figure 12 As shown, the length of the connecting line connected to the first type of light-emitting unit 211 in the special module area 205 is greater than the length of the connecting line connected to the first type of light-emitting unit 211 in the first display area 201. The length of the connecting line connected to the second type of light-emitting unit 212 in the special module area 205 is greater than the length of the connecting line connected to the second type of light-emitting unit 212 in the first display area 201. The length of the connecting line connected to the third type of light-emitting unit 213 in the special module area 205 is greater than the length of the connecting line 23 connected to the third type of light-emitting unit 213 in the first display area 201.

[0086] Specifically, such as Figure 13 As shown, the length of the connecting line connected to the first type of light-emitting unit 211 in the upper splicing area 206 is greater than the length of the connecting line connected to the first type of light-emitting unit 211 in the first display area 201; the length of the connecting line connected to the second type of light-emitting unit 212 in the upper splicing area 206 is greater than the length of the connecting line connected to the second type of light-emitting unit 212 in the first display area 201; and the length of the connecting line connected to the third type of light-emitting unit 213 in the upper splicing area 206 is greater than the length of the connecting line 23 connected to the third type of light-emitting unit 213 in the first display area 201.

[0087] Specifically, the length of the connecting lines connecting the first type of light-emitting unit 211, the second type of light-emitting unit 212, and the third type of light-emitting unit 213 in the same pixel unit is not limited in this embodiment. The lengths of the connecting lines connecting the first type of light-emitting unit 211, the second type of light-emitting unit 212, and the third type of light-emitting unit 213 can be equal, or the lengths of the connecting lines connecting the first type of light-emitting unit 211, the second type of light-emitting unit 212, and the third type of light-emitting unit 213 can be unequal, or the lengths of the connecting lines connecting two of the first type of light-emitting unit 211, the second type of light-emitting unit 212, and the third type of light-emitting unit 213 can be equal, or the lengths of the connecting lines connecting two of the first type of light-emitting unit 211, the second type of light-emitting unit 212, and the third type of light-emitting unit 213 can be unequal.

[0088] In some embodiments, the pixel circuit 22 includes a connecting line 23 connected to the first electrode 21a of the light-emitting device 21; wherein the width of the connecting line 23 located in the second display area 202 is greater than the width of the corresponding connecting line 23 located in the first display area 201. By making the width of the connecting line 23 located in the second display area 202 greater than the width of the corresponding connecting line 23 located in the first display area, the connecting line 23 can avoid some structures, and increasing the width of the connecting line 23 can reduce the impedance of the connecting line 23, making the brightness of the light-emitting devices 21 in the first display area 201 and the second display area 202 similar or even the same, thus improving display uniformity.

[0089] Specifically, the width of the connector refers to the line width of the connector.

[0090] Specifically, when setting the connecting line 23, since the spacing of the pixel circuits 22 is shortened, the connecting lines 23 of each pixel circuit 22 may overlap. In order to avoid short circuits in the connecting lines 23 of each pixel circuit 22, the position of the via can be moved so that the width of some connecting lines 23 is increased, and the connecting lines 23 can pass through the via to connect to the pixel circuit 22, thereby realizing the connection between the pixel circuit 22 and the light-emitting device 21.

[0091] In some embodiments, the pixel circuit 22 includes a connecting line 23 connected to the first electrode 21a of the light-emitting device 21; wherein the area of ​​the connecting line 23 located in the second display area 202 is larger than the area of ​​the corresponding connecting line 23 located in the first display area 201. By making the area of ​​the connecting line 23 located in the second display area 202 larger than the area of ​​the corresponding connecting line 23 located in the second display area 202, when the pixel circuit 22 in the second display area 202 is positioned close to the light-emitting device 21 in the first display area 201, the light-emitting device 21 and the pixel circuit 22 can be connected through the connecting line 23, enabling the normal operation of the light-emitting device 21; and increasing the area of ​​the connecting line 23 can reduce the impedance of the connecting line 23, making the brightness of the light-emitting devices 21 in the first display area 201 and the second display area 202 similar or even the same, improving display uniformity.

[0092] Specifically, the area of ​​the connecting line 23 of the second display area 202 can be increased by increasing the length of the connecting line 23; the area of ​​the connecting line 23 of the second display area 202 can also be increased by increasing both the length and width of the connecting line 23.

[0093] In some embodiments, such as Figure 6 , Figure 8 , Figure 10 , Figure 12As shown, the light-emitting devices 21 are arrayed along a first direction X and a second direction Y within the second display area 202; the second display area 202 and the first display area 201 are arranged along the first direction X; wherein, within the second display area 202, the length of the connecting line 23 corresponding to at least one column of the light-emitting devices 21 is greater than the length of the connecting line 23 corresponding to another column of the light-emitting devices 21 of the same color. By making the length of the connecting line 23 corresponding to one column of the light-emitting devices 21 greater than the length of the connecting line 23 corresponding to another column of the light-emitting devices 21 of the same color, the distance the pixel circuit 22 moves within the second display area 202 can be gradually reduced, thereby reducing the difference between the second display area 202 and the first display area 201 and improving display uniformity.

[0094] Specifically, the connection line 23 corresponding to the light-emitting device 21 refers to the connection line 23 to which the light-emitting device 21 is connected. In particular, the light-emitting device 21 is connected to the node (or signal terminal, or transistor electrode) in the pixel circuit 22 through the connection line 23. Therefore, the connection line 23 corresponding to the light-emitting device 21 refers to the connection line 23 connecting this light-emitting device 21 and the pixel circuit 22 that drives this light-emitting device 21.

[0095] In some embodiments, the light-emitting devices 21 are arrayed along a first direction X and a second direction Y within the second display area 202; the second display area 202 and the first display area 201 are arranged along the first direction X; wherein, within the second display area 202, the width of the connecting line 23 corresponding to at least one column of the light-emitting devices 21 is greater than the width of the connecting line 23 corresponding to another column of the light-emitting devices 21 of the same color; by making the width of the connecting line 23 corresponding to one column of the light-emitting devices 21 greater than the width of the connecting line 23 corresponding to another column of the light-emitting devices 21 of the same color, the connecting line 23 can avoid some structures, and increasing the width of the connecting line 23 can reduce the impedance of the connecting line 23, so that the brightness of each light-emitting device 21 within the second display area 202 is similar or even the same, thereby improving display uniformity.

[0096] Specifically, when setting the connecting line 23, since the spacing of the pixel circuits 22 is shortened, the connecting lines 23 of each pixel circuit 22 may overlap. In order to avoid short circuits in the connecting lines 23 of each pixel circuit 22, the position of the via can be moved so that the width of some connecting lines 23 is increased, and the connecting lines 23 can pass through the via to connect to the pixel circuit 22, thereby realizing the connection between the pixel circuit 22 and the light-emitting device 21.

[0097] In some embodiments, the light-emitting devices 21 are arrayed along a first direction X and a second direction Y within the second display area 202; the second display area 202 and the first display area 201 are arranged along the first direction X; wherein, within the second display area 202, the area of ​​the connecting lines 23 corresponding to at least one column of the light-emitting devices 21 is larger than the area of ​​the connecting lines 23 corresponding to another column of the light-emitting devices 21 of the same color. By making the area of ​​the connecting lines 23 corresponding to one column of the light-emitting devices 21 larger than the area of ​​the connecting lines 23 corresponding to another column of the light-emitting devices 21 of the same color, when the pixel circuits 22 in the second display area 202 are arranged near the light-emitting devices 21 in the first display area 201, the light-emitting devices 21 and the pixel circuits 22 can be connected through the connecting lines 23, enabling the normal operation of the light-emitting devices 21; and increasing the area of ​​the connecting lines 23 can reduce the impedance of the connecting lines 23, making the brightness of each light-emitting device 21 in the second display area 202 similar or even the same, improving display uniformity.

[0098] Specifically, the area of ​​the connecting line 23 can be increased by increasing its length; the area of ​​the connecting line 23 can also be increased by increasing both its length and width.

[0099] In some embodiments, such as Figure 6 , Figure 10 As shown, the second display area 202 is disposed on the side of the first display area 201 near the edge of the display panel 2. The length of the connecting line 23 in the second display area 202 near the first display area 201 is less than the length of the connecting line 23 in the second display area 202 away from the first display area 201. By making the length of the connecting line 23 in the second display area 202 near the first display area 201 less than the length of the connecting line 23 in the second display area 202 away from the first display area 201, the arrangement density of the pixel circuit 22 gradually decreases from the edge of the display panel 2 toward the center of the display panel 2, thereby reducing the difference between different areas and improving display uniformity.

[0100] Specifically, such as Figure 6As shown, the light-emitting device 21 includes a first type of light-emitting unit 211, a second type of light-emitting unit 212, and a third type of light-emitting unit 213 with different light-emitting colors. It can be seen that in the second display area 202, the length of the connecting line 23 connected to the first type of light-emitting unit 211 near the edge of the display panel 2 is greater than the length of the connecting line 23 connected to the first type of light-emitting unit 211 near the first display area 201; the length of the connecting line 23 connected to the second type of light-emitting unit 212 near the edge of the display panel 2 is greater than the length of the connecting line 23 connected to the second type of light-emitting unit 212 near the first display area 201; and the length of the connecting line 23 connected to the third type of light-emitting unit 213 near the edge of the display panel 2 is greater than the length of the connecting line 23 connected to the third type of light-emitting unit 213 near the first display area 201.

[0101] Specifically, within the second display area 202, the length of the connecting line 23 corresponding to at least one column of the light-emitting devices 21 can be equal to the length of the connecting line 23 corresponding to another column of the light-emitting devices 21 of the same light-emitting color.

[0102] For example, such as Figure 10 As shown, the length of the connecting line 23 connected to a column of third-type light-emitting units 213 near the edge of the display panel 2 can be equal to the length of the connecting line 23 connected to a column of third-type light-emitting units 213 near the first display area 201; however, the embodiments of this application are not limited to this, and the length of the connecting line 23 connected to a column of third-type light-emitting units 213 near the edge of the display panel 2 can be greater than the length of the connecting line 23 connected to a column of third-type light-emitting units 213 near the first display area 201.

[0103] In some embodiments, the width of the connecting line 23 in the second display area 202 that is closer to the first display area 201 is smaller than the width of the connecting line 23 in the second display area 202 that is farther from the first display area 201. By making the width of the connecting line 23 corresponding to the light-emitting device 21 that is closer to the first display area 201 greater than the width of the connecting line 23 corresponding to the light-emitting device 21 that is farther from the first display area 201, the connecting line 23 can avoid some structures, and increasing the width of the connecting line 23 can reduce the impedance of the connecting line 23, so that the brightness of each light-emitting device 21 in the second display area 202 is similar or even the same, thereby improving the display uniformity.

[0104] Specifically, when setting the connecting line 23, since the spacing of the pixel circuits 22 is shortened, the connecting lines 23 of each pixel circuit 22 may overlap. In order to avoid short circuits in the connecting lines 23 of each pixel circuit 22, the position of the via can be moved so that the width of some connecting lines 23 is increased, and the connecting lines 23 can pass through the via to connect to the pixel circuit 22, thereby realizing the connection between the pixel circuit 22 and the light-emitting device 21.

[0105] In some embodiments, the area of ​​the connecting line 23 in the second display area 202 that is closer to the first display area 201 is smaller than the area of ​​the connecting line 23 in the second display area 202 that is farther away from the first display area 201. By making the area of ​​the connecting line 23 corresponding to one column of light-emitting devices 21 larger than the area of ​​the connecting line 23 corresponding to another column of light-emitting devices 21 of the same color, the pixel circuit 22 in the second display area 202 can be connected to the light-emitting device 21 and the pixel circuit 22 through the connecting line 23 when the light-emitting device 21 is close to the first display area 201, so that the light-emitting device 21 can work normally. Increasing the area of ​​the connecting line 23 can reduce the impedance of the connecting line 23, so that the brightness of each light-emitting device 21 in the second display area 202 is similar or even the same, thus improving the uniformity of the display.

[0106] Specifically, the area of ​​the connecting line 23 can be increased by increasing its length; the area of ​​the connecting line 23 can also be increased by increasing both its length and width.

[0107] In some embodiments, such as Figure 7 , Figure 8 As shown, the second display area 202 is disposed between adjacent to the first display area 201, and the pixel circuits 22 located in the second display area 202 are symmetrically arranged. By symmetrically arranging the pixel circuits 22 in the second display area 202, the symmetry of the display panel 2 is improved, thus enhancing the display effect. Furthermore, the symmetrical arrangement of the pixel circuits 22 can eliminate some areas of pixel circuits 22, allowing for the placement of traces and / or gate drive circuits 25, thereby reducing or even eliminating the bezel and minimizing or eliminating seams during the splicing of the display panels 2.

[0108] Specifically, such as Figure 7 , Figure 8 As shown, the length of the connecting line 23 corresponding to the light-emitting device 21 in the middle area of ​​the second display area 202 is greater than the length of the connecting line 23 corresponding to the light-emitting device 21 in the edge area of ​​the second display area 202; thus, a larger area can be left in the middle area of ​​the special module area 205 to set up functional elements and / or gate driving circuits 25 and wiring, thereby reducing the bezel or even eliminating the bezel.

[0109] Specifically, the width of the connecting line 23 corresponding to the light-emitting device 21 in the middle area of ​​the second display area 202 can be made greater than the width of the connecting line 23 corresponding to the light-emitting device 21 in the edge area of ​​the second display area 202; thereby avoiding the influence of short circuits or parasitic capacitance in some structures, and reducing impedance and improving display uniformity.

[0110] Specifically, the area of ​​the connecting line 23 corresponding to the light-emitting device 21 in the middle area of ​​the second display area 202 can be made larger than the area of ​​the connecting line 23 corresponding to the light-emitting device 21 in the edge area of ​​the second display area 202; thereby avoiding the influence of short circuits or parasitic capacitance in some structures, and reducing impedance and improving display uniformity.

[0111] Specifically, the length of the connecting line 23 in the middle area of ​​the second display area 202 can be greater than the length of the connecting line 23 in the edge area of ​​the second display area 202; or the length of the connecting line 23 in the middle area of ​​the second display area 202 can be greater than the length of the connecting line 23 in the edge area of ​​the second display area 202, and the width of the connecting line 23 in the middle area of ​​the second display area 202 can be greater than the width of the connecting line 23 in the edge area of ​​the second display area 202.

[0112] In some embodiments, such as Figure 8 , Figure 12 As shown, from the middle area of ​​the second display area 202 to the first display area 201, the length of the connecting line 23 corresponding to the light-emitting devices 21 of the same color decreases sequentially; thus, the brightness of each light-emitting device 21 in the second display area 202 is similar or even the same, improving display uniformity, and the brightness of the light-emitting devices 21 in the second display area 202 is similar or even the same as that of the light-emitting devices 21 in the first display area 201, improving display uniformity.

[0113] Specifically, such as Figure 8 , Figure 12 As shown, within the special module area 205, the length of the connecting line 23 connecting the first type of light-emitting units 211 in the middle of the special module area 205 is greater than the length of the connecting line 23 connecting the first type of light-emitting units 211 at the edge of the special module area 205; the length of the connecting line 23 connecting the second type of light-emitting units 212 in the middle of the special module area 205 is greater than the length of the connecting line 23 connecting the second type of light-emitting units 212 at the edge of the special module area 205; and the length of the connecting line 23 connecting the third type of light-emitting units 213 in the middle of the special module area 205 is greater than the length of the connecting line 23 connecting the third type of light-emitting units 213 at the edge of the special module area 205.

[0114] In some embodiments, from the middle region of the second display area 202 to the first display area 201, the width of the connecting line 23 corresponding to the light-emitting devices 21 of the same emitting color decreases sequentially; thereby, the brightness of each light-emitting device 21 in the second display area 202 is similar or even the same, improving display uniformity, and the brightness of the light-emitting devices 21 in the second display area 202 is similar or even the same as that of the light-emitting devices 21 in the first display area 201, improving display uniformity.

[0115] In some embodiments, from the middle region of the second display area 202 to the first display area 201, the area of ​​the connecting line 23 corresponding to the light-emitting device 21 of the same emitting color decreases sequentially; thereby, the brightness of each light-emitting device 21 in the second display area 202 is similar or even the same, improving display uniformity, and the brightness of the light-emitting device 21 in the second display area 202 is similar or even the same as that of the light-emitting device 21 in the first display area 201, improving display uniformity.

[0116] In some embodiments, such as Figures 2 to 15 As shown, the light-emitting device 21 includes a first type of light-emitting unit 211, a second type of light-emitting unit 212, and a third type of light-emitting unit 213 with different light-emitting colors. Thus, full-color display can be achieved through the first type of light-emitting unit 211, the second type of light-emitting unit 212, and the third type of light-emitting unit 213.

[0117] In some embodiments, such as Figures 2 to 8 , Figures 13 to 15 As shown, a first type of light-emitting unit 211, a second type of light-emitting unit 212, and a third type of light-emitting unit 213 constitute a pixel unit 26. Multiple pixel units 26 are arranged in the same row along the first direction X, multiple first type of light-emitting units 211 are arranged in the same column along the second direction Y, multiple second type of light-emitting units 212 are arranged in the same column along the second direction Y, and multiple third type of light-emitting units 213 are arranged in the same column along the second direction Y. The spacing L1 between two adjacent pixel units 26 in the same row is greater than the spacing L2 between two adjacent light-emitting devices 21 in the pixel unit 26. This makes the spacing between the light-emitting units in the pixel unit smaller, the electrodes of the light-emitting units easier to connect, and the light mixing better.

[0118] Specifically, such as Figure 5 As shown, the distance between the third type of light-emitting unit 213 in one pixel unit 26 and the first type of light-emitting unit 211 in another pixel unit 26 is smaller than the distance between the third type of light-emitting unit 213 and the second type of light-emitting unit 212 in one pixel unit 26.

[0119] In some embodiments, such as Figure 6 , Figure 8As shown, the second display area 202 and the first display area 201 are arranged along the first direction X. Within the second display area 202, the connecting line 23 connected to the light-emitting device 21 extends towards the first display area 201 along the first direction X. The angle between the first direction X and the second direction Y is greater than 0 and less than or equal to 90 degrees. By making the connecting line 23 connected to the light-emitting device 21 extend towards the first display area 201 along the first direction X, both the pixel circuit 22 and the connecting line 23 are arranged towards the first display area 201. This allows the circuits and traces in the second display area 202 to be arranged close to the first display area 201, thereby reducing or even eliminating the bezel and reducing or even eliminating the seam during the splicing of the display panels 2.

[0120] For example, such as Figure 8 As shown, within the special module area 205, the connecting line 23 connected to the first type of light-emitting unit 211 extends along the first direction X toward the first display area 201.

[0121] Specifically, such as Figure 6 As shown, a portion of the connecting line 23 connected to the light-emitting device 21 can extend along the first direction X toward the first display area 201, and a portion of the connecting line 23 can extend along the second direction Y.

[0122] In some embodiments, such as Figure 6 , Figure 8 , Figure 15 As shown, within the second display area 202, the second electrodes 21b of the first type of light-emitting unit 211, the second type of light-emitting unit 212, and the third type of light-emitting unit 213 in the same pixel unit 26 are connected to the same adapter cable 24, thereby reducing the number of vias and improving the stability of the display panel 2.

[0123] Specifically, when the second electrodes 21b of the first type of light-emitting unit 211, the second type of light-emitting unit 212, and the third type of light-emitting unit 213 in the same pixel unit 26 are connected to the same adapter cable 24, the adapter cable 24 can be connected to the low-potential power line VSS through one or more vias.

[0124] In some embodiments, such as Figures 9 to 12As shown, the light-emitting device 21 includes a first type of light-emitting unit 211, a second type of light-emitting unit 212, and a third type of light-emitting unit 213. The first type of light-emitting unit 211, the second type of light-emitting unit 212, and the third type of light-emitting unit 213 are alternately arranged along a first direction X. Multiple first type of light-emitting units 211 are arranged in the same column along a second direction Y, multiple second type of light-emitting units 212 are arranged in the same column along the second direction Y, and multiple third type of light-emitting units 213 are arranged in the same column along the second direction Y. The spacing between any two adjacent light-emitting devices 21 in the same row is equal. By making the spacing between any two adjacent light-emitting devices 21 in the same row equal, the brightness uniformity of the light emitted by the light-emitting device 21 can be improved, thus improving display uniformity.

[0125] Specifically, the above embodiments have been described in detail using two pixel arrangements as examples. However, the pixel arrangement in the embodiments of this application is not limited to these. The pixel arrangement of the light-emitting device 21 can be other arrangements, such as SPR (Sub-Pixel Rendering) arrangement, which will not be elaborated here.

[0126] In some embodiments, such as Figure 10 , Figure 12 As shown, the second display area 202 is disposed on at least one side of the first display area 201 along the first direction X. In the second display area 202, the extension direction of the connecting line 23 connected to the light-emitting device 21 forms an acute angle with the first direction X. The angle between the first direction X and the second direction Y is greater than 0 and less than or equal to 90 degrees. By making the extension direction of the connecting line 23 form an acute angle with the first direction X, the connecting line 23 can be disposed in the space above the light-emitting unit, so that the light-emitting device 21 is connected to the pixel circuit 22.

[0127] For example, such as Figure 10 As shown, within the special module area 205, the connecting line 23 connected to the first type of light-emitting unit 211 extends along the first direction X, the second direction Y, and obliquely, such that the extension direction of the connecting line 23 connected to the first type of light-emitting unit 211 forms an acute angle with the first direction X.

[0128] Specifically, the extension direction of the connecting line 23 connected to the light-emitting device 21 can be the first direction X; the extension direction of the connecting line 23 connected to the light-emitting device 21 can be the second direction Y; the extension direction of the connecting line 23 connected to the light-emitting device 21 can be at an acute angle to the first direction X; the extension direction of the connecting line 23 connected to some of the light-emitting devices 21 can be either the first direction X or the second direction Y, and the extension direction of the connecting line 23 connected to some of the light-emitting devices 21 can be at an acute angle to the first direction X.

[0129] Specifically, when the extension direction of the connecting line 23 connected to the light-emitting device 21 forms an acute angle with the first direction X, a portion of the connecting line 23 connected to the light-emitting device 21 can be positioned along the first direction X, and a portion of the connecting line 23 can be positioned along the second direction Y. Alternatively, a portion of the connecting line 23 can be positioned along the first direction X, a portion of the connecting line 23 can be positioned along the second direction Y, and a portion of the connecting line 23 can be positioned along a direction forming an acute angle with the first direction X.

[0130] It is understood that the above embodiments illustrate the extension direction of the connecting line 23, but the embodiments of this application are not limited thereto. For example, the extension direction of the connecting line 23 connected to some of the light-emitting devices 21 may form a first acute angle with the first direction X, and the extension direction of the connecting line 23 connected to some of the light-emitting devices 21 may form a second acute angle with the first direction X. The first acute angle and the second acute angle are not equal, and will not be described in detail here.

[0131] In some embodiments, such as Figure 10 , Figure 12 As shown, the display panel 2 includes multiple adapter lines 24, and the second electrode 21b of each light-emitting device 21 is connected to one of the adapter lines 24. By connecting the second electrode 21b of each light-emitting device 21 to an adapter line 24, and connecting the adapter line 24 to the low-potential power line VSS, the second electrode 21b of the light-emitting device 21 can be connected to the low-potential power line VSS.

[0132] Specifically, such as Figure 10 As shown, some of the second electrodes 21b of the light-emitting devices 21 can also be connected to the same adapter cable 24, but the embodiments of this application are not limited to this, and the second electrodes 21b of multiple light-emitting devices 21 can be connected to the same adapter cable 24.

[0133] Specifically, after the second electrode 21b of each light-emitting device 21 is connected to the adapter cable 24, the adapter cable 24 can be connected to the low-potential power line VSS, so that the second electrode 21b of each light-emitting device 21 can be electrically connected to the low-potential power line VSS.

[0134] In some embodiments, such as Figure 13As shown, the light-emitting devices 21 are arrayed along a first direction X and a second direction Y within the second display area 202; the second display area 202 is disposed along the second direction Y on at least one side of the first display area 201; wherein, within the second display area 202, the length of the connecting line 23 corresponding to at least one row of the light-emitting devices 21 is greater than the length of the connecting line 23 corresponding to another row of the light-emitting devices 21 of the same color; the angle between the first direction X and the second direction Y is greater than 0 and less than or equal to 90 degrees. By distributing the second display area 202 along the second direction Y on at least one side of the first display area 201, and ensuring that the length of the connecting line 23 corresponding to at least one row of the light-emitting devices 21 within the second display area 202 is greater than the length of the connecting line 23 corresponding to another row of the light-emitting devices 21 of the same color, the pixel circuit 22 density within the second display area 202 gradually decreases from the edge of the display panel 2 towards the center of the display panel 2, thereby reducing the difference between the second display area 202 and the first display area 201 and improving display uniformity.

[0135] Specifically, such as Figure 13 As shown, within the upper splicing area 206, the length of the connecting line 23 connecting the row of first-type light-emitting units 211 near the edge of the display panel 2 is greater than the length of the connecting line 23 connecting the row of first-type light-emitting units 211 near the first display area 201; the length of the connecting line 23 connecting the row of second-type light-emitting units 212 near the edge of the display panel 2 is greater than the length of the connecting line 23 connecting the row of second-type light-emitting units 212 near the first display area 201; and the length of the connecting line 23 connecting the row of third-type light-emitting units 213 near the edge of the display panel 2 is greater than the length of the connecting line 23 connecting the row of third-type light-emitting units 213 near the first display area 201.

[0136] Specifically, in Figure 13 In this configuration, the connecting lines can be set along a first direction and a second direction.

[0137] In some embodiments, the second display area 202 is disposed along the second direction Y on at least one side of the first display area 201; wherein, within the second display area 202, the width of the connecting line 23 corresponding to at least one row of light-emitting devices 21 is greater than the width of the connecting line 23 corresponding to another row of light-emitting devices 21 of the same color; by making the width of the connecting line 23 corresponding to one row of light-emitting devices 21 greater than the width of the connecting line 23 corresponding to another row of light-emitting devices 21 of the same color, the connecting line 23 can avoid some structures, and increasing the width of the connecting line 23 can reduce the impedance of the connecting line 23, so that the brightness of each light-emitting device 21 within the second display area 202 is similar or even the same, thereby improving display uniformity.

[0138] Specifically, when setting the connecting line 23, since the spacing of the pixel circuits 22 is shortened, the connecting lines 23 of each pixel circuit 22 may overlap. In order to avoid short circuits in the connecting lines 23 of each pixel circuit 22, the position of the via can be moved so that the width of some connecting lines 23 is increased, and the connecting lines 23 can pass through the via to connect to the pixel circuit 22, thereby realizing the connection between the pixel circuit 22 and the light-emitting device 21.

[0139] In some embodiments, the second display area 202 is disposed along a second direction Y at least on one side of the first display area 201; wherein, within the second display area 202, the area of ​​the connecting line 23 corresponding to at least one row of light-emitting devices 21 is larger than the area of ​​the connecting line 23 corresponding to another row of light-emitting devices 21 of the same color. By making the area of ​​the connecting line 23 corresponding to one row of light-emitting devices 21 larger than the area of ​​the connecting line 23 corresponding to another row of light-emitting devices 21 of the same color, the pixel circuit 22 in the second display area 202 can connect the light-emitting devices 21 and the pixel circuit 22 through the connecting line 23 when the light-emitting devices 21 are disposed close to the first display area 201, thereby enabling the normal operation of the light-emitting devices 21; and increasing the area of ​​the connecting line 23 can reduce the impedance of the connecting line 23, making the brightness of each light-emitting device 21 in the second display area 202 similar or even the same, thus improving display uniformity.

[0140] In some embodiments, such as Figure 15 As shown, the display panel 2 includes a first source-drain layer (not shown), a second source-drain layer 312, a third source-drain layer 313, and a fourth source-drain layer 314 arranged sequentially. The connecting line 23 includes multiple portions disposed in the first source-drain layer, the second source-drain layer 312, the third source-drain layer 313, and the fourth source-drain layer 314. By making the connecting line 23 include multiple portions, the connecting lines 23 of different light-emitting devices 21 can be transferred through multiple film layers. When the connecting lines 23 of different light-emitting devices 21 cross, the alternation of film layers avoids short circuits between the connecting lines 23, thereby improving the yield of the display panel 2.

[0141] Specifically, the fourth source-drain layer 314 can be disposed between the third source-drain layer 313 and the light-emitting device.

[0142] In some embodiments, such as Figures 2 to 15As shown, the spacing between adjacent pixel circuits 22 located in the second display area 202 is smaller than the spacing between adjacent pixel circuits 22 located in the first display area 201. By making the spacing between adjacent pixel circuits 22 located in the second display area 202 smaller than the spacing between adjacent pixel circuits 22 located in the first display area 201, the pixel circuits 22 in the second display area 202 can be positioned closer to the first display area 201, thereby reducing or even eliminating the bezel, and reducing or even eliminating the seam during the splicing of the display panels 2.

[0143] Specifically, in Figure 5 , Figure 7 , Figure 9 , Figure 13 The pixel circuit shown is a pixel circuit corresponding to one pixel unit, but it actually includes pixel circuits corresponding to three light-emitting units.

[0144] Specifically, such as Figure 5 , Figure 9 As shown, taking the left splicing area 203 with two columns of pixel circuits as an example, it can be seen that the two columns of pixel circuits are arranged adjacently without spacing, while the two columns of pixel circuits in the first display area 201 have a certain spacing. However, the embodiments of this application are not limited to this; in the second display area, there may be a certain spacing between two adjacent columns of display circuits.

[0145] It is understandable that there may be spacing between the pixel circuits connecting the light-emitting units within the same pixel unit, or there may be no spacing, as long as the spacing between the pixel circuits in the second display area is less than the spacing between the pixel circuits in the first display area. Similarly, as... Figure 7 , Figure 11 As shown, in the special module area 205, the spacing between adjacent pixel circuits 22 is smaller than the spacing between adjacent pixel circuits 22 located in the first display area 201. Figure 13 As shown, within the upper splicing area 206, the spacing between adjacent pixel circuits 22 is smaller than the spacing between adjacent pixel circuits 22 located in the first display area 201.

[0146] Specifically, when the light-emitting device is a light-emitting diode, the light-emitting device can be a mini light-emitting diode or a micro light-emitting diode. Correspondingly, the first type of light-emitting unit, the second type of light-emitting unit, and the third type of light-emitting unit are mini light-emitting diodes or micro light-emitting diodes.

[0147] Specifically, when the light-emitting device is a light-emitting diode (LED), one of the first electrode and the second electrode of the light-emitting device is the P-type electrode, and the other is the N-type electrode; that is, one of the first electrode and the second electrode of the light-emitting device is the anode, and the other is the cathode. In this embodiment, the first electrode of the light-emitting device is the P-type electrode, and the second electrode is the N-type electrode, as an example for illustration.

[0148] Specifically, in this embodiment of the application, the first electrode of the light-emitting device is connected to the pixel circuit and the second electrode is connected to the low-potential power line as an example. However, this embodiment of the application is not limited to this. The second electrode of the light-emitting device can be connected to the pixel circuit and the first electrode can be connected to the low-potential power line or the high-potential power line.

[0149] Specifically, such as Figure 15 As shown, we can see the structure when the light-emitting device is not connected to the pixel circuit but only to the adapter cable 24, the structure of the light-emitting device located in the second display area and the structure of the light-emitting device located in the first display area.

[0150] Specifically, such as Figure 15 As shown, the first via 321 can be a via connecting the fourth source-drain layer to the third source-drain layer, the second via 322 can be a via connecting the third source-drain layer to the second source-drain layer, and the third via 323 can be a via connecting the second source-drain layer to the first source-drain layer.

[0151] Specifically, such as Figure 16 As shown, one electrode of the light-emitting device 21 can be connected to the pixel circuit 22, and the other electrode of the light-emitting device 21 can be connected to the low-potential power line.

[0152] In some embodiments, the spacing between light-emitting devices in the second display area 202 is equal to the spacing between light-emitting devices in the first display area 201; for example, the spacing between adjacent pixel units in the second display area 202 is equal to the spacing between adjacent pixel units in the first display area 201; or, for example, the spacing between adjacent light-emitting devices in the same pixel unit in the second display area 202 is equal to the spacing between adjacent light-emitting devices in the same pixel unit in the second display area 202; for example, the spacing between a first type of light-emitting unit and a second type of light-emitting unit in the same pixel unit in the second display area 202 is equal to the spacing between a first type of light-emitting unit and a second type of light-emitting unit in the same pixel unit in the first display area 201.

[0153] Specifically, the spacing between two adjacent rows of light-emitting devices in the second display area 202 can be made equal to the spacing between two adjacent rows of light-emitting devices in the first display area 201.

[0154] Specifically, the embodiments of this application do not limit the specific design of the pixel circuit, which can be 7T1C (7 transistors and one capacitor), 7T2C or other circuits.

[0155] Specifically, the display panel can also be OLED (Organic Light Source). Organic light-emitting diode (OLED) display panel.

[0156] Specifically, in this embodiment, the number of rows and columns of pixel units in the second display area is not limited. For example, Figure 2 The left stitching area 203 has two columns of pixel units, but the embodiments of this application are not limited to this. The left stitching area 203 may have one column of pixel units or three columns of pixel units.

[0157] Specifically, the above embodiments have described the display panel in detail from the aspects of pixel arrangement, area design, and pixel circuit design. It is understood that when there is no conflict between the embodiments, the features of each embodiment or the embodiments can be combined. For example, the light-emitting device 21 located in the second display area 202 is disposed on the side of the corresponding pixel circuit 22 away from the first display area 201, and the spacing between adjacent pixel circuits 22 in the second display area 202 is smaller than the spacing between adjacent pixel circuits 22 in the first display area 201.

[0158] Meanwhile, this application provides a splicing display device, which may include any of the display panels described in the above embodiments.

[0159] Specifically, a splicing display device may include multiple display panels, which are spliced ​​together.

[0160] The embodiments of this application do not limit the splicing method of multiple display panels. Multiple display panels can be spliced ​​along a first direction, multiple display panels can be spliced ​​along a second direction, or multiple display panels can be spliced ​​along both the first and second directions.

[0161] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0162] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0163] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0164] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A display panel, characterized in that, The display panel includes a first display area and a second display area, wherein the second display area is disposed on at least one side of the first display area, and the display panel includes a light-emitting device and a pixel circuit for driving the light-emitting device; The light-emitting device located in the second display area is disposed on the side of the corresponding pixel circuit away from the first display area.

2. The display panel according to claim 1, characterized in that, The second display area is located on the side of the first display area near the edge of the display panel.

3. The display panel according to claim 1, characterized in that, The display panel includes a plurality of first display areas, and a second display area is disposed between adjacent first display areas, wherein a gate driving circuit is provided in the second display area.

4. The display panel according to any one of claims 1 to 3, characterized in that, The display panel includes a connecting line, one end of which is connected to the first electrode of the light-emitting device, and the other end of which is connected to the pixel circuit. The length of the connecting line located in the second display area is greater than the length of the corresponding connecting line located in the first display area.

5. The display panel according to claim 4, characterized in that, The width of the connecting line located in the second display area is greater than the width of the corresponding connecting line located in the first display area; and / or, the area of ​​the connecting line located in the second display area is greater than the area of ​​the corresponding connecting line located in the first display area.

6. The display panel according to claim 4, characterized in that, The light-emitting devices are arrayed and disposed within the second display area along a first direction and a second direction; the second display area and the first display area are disposed along the first direction. In the second display area, the length of the connecting line corresponding to at least one column of the light-emitting devices is greater than the length of the connecting line corresponding to another column of the light-emitting devices of the same color; the angle between the first direction and the second direction is greater than 0 and less than or equal to 90 degrees.

7. The display panel according to claim 6, characterized in that, The second display area is located on the side of the first display area near the edge of the display panel, and the length of the connecting line in the second display area that is closer to the first display area is less than the length of the connecting line in the second display area that is farther away from the first display area.

8. The display panel according to claim 6, characterized in that, The second display area is disposed between adjacent to the first display area, and the pixel circuits located in the second display area are symmetrically arranged.

9. The display panel according to claim 4, characterized in that, The light-emitting device includes a first type of light-emitting unit, a second type of light-emitting unit, and a third type of light-emitting unit with different light-emitting colors. One first type of light-emitting unit, one second type of light-emitting unit, and one third type of light-emitting unit constitute a pixel unit. Multiple pixel units are arranged in the same row along a first direction. Multiple first type of light-emitting units are arranged in the same column along a second direction. Multiple second type of light-emitting units are arranged in the same column along a second direction. Multiple third type of light-emitting units are arranged in the same column along a second direction. The spacing between two adjacent pixel units in the same row is greater than the spacing between two adjacent light-emitting devices in the pixel unit. The second display area and the first display area are arranged along the first direction. In the second display area, the connecting line connected to the light-emitting device extends towards the first display area along the first direction. The angle between the first direction and the second direction is greater than 0 and less than or equal to 90 degrees.

10. The display panel according to claim 9, characterized in that, Within the second display area, the second electrodes of the first type of light-emitting unit, the second type of light-emitting unit, and the third type of light-emitting unit in the same pixel unit are connected to the same adapter cable.

11. The display panel according to claim 4, characterized in that, The light-emitting device includes a first type of light-emitting unit, a second type of light-emitting unit, and a third type of light-emitting unit with different light-emitting colors. The first type of light-emitting unit, the second type of light-emitting unit, and the third type of light-emitting unit are alternately arranged along a first direction. A plurality of the first type of light-emitting units are arranged in the same column along a second direction. A plurality of the second type of light-emitting units are arranged in the same column along a second direction. A plurality of the third type of light-emitting units are arranged in the same column along a second direction. The spacing between any two adjacent light-emitting devices in the same row is equal. The second display area is disposed on at least one side of the first display area along the first direction. In the second display area, the extension direction of the connecting line connected to the light-emitting device forms an acute angle with the first direction. The angle between the first direction and the second direction is greater than 0 and less than or equal to 90 degrees.

12. The display panel according to claim 11, characterized in that, The display panel includes multiple adapter cables, and the second electrode of each of the light-emitting devices is connected to one of the adapter cables.

13. The display panel according to claim 4, characterized in that, The light-emitting devices are arrayed and disposed within the second display area along a first direction and a second direction; the second display area is disposed on at least one side of the first display area along the second direction. In the second display area, the length of the connecting line corresponding to at least one row of light-emitting devices is greater than the length of the connecting line corresponding to another row of light-emitting devices of the same color; the angle between the first direction and the second direction is greater than 0 and less than or equal to 90 degrees.

14. The display panel according to claim 13, characterized in that, The width of the connecting line corresponding to at least one row of light-emitting devices is greater than the width of the connecting line corresponding to the light-emitting devices of the same color in another row; and / or, the area of ​​the connecting line corresponding to at least one row of light-emitting devices is greater than the area of ​​the connecting line corresponding to the light-emitting devices of the same color in another row.

15. The display panel according to claim 4, characterized in that, The display panel includes a first source-drain layer, a second source-drain layer, a third source-drain layer, and a fourth source-drain layer arranged sequentially, and the connecting line includes multiple parts disposed in the first source-drain layer, the second source-drain layer, the third source-drain layer, and the fourth source-drain layer.

16. The display panel according to any one of claims 1 to 3, 5 to 15, characterized in that, The spacing between adjacent pixel circuits located in the second display area is smaller than the spacing between adjacent pixel circuits located in the first display area.

17. A splicing display device, characterized in that, It includes multiple display panels as described in any one of claims 1 to 16, and the multiple display panels are spliced ​​together.

Images