Display panel and method for repairing the display panel

Abstract

An embodiment of the present application discloses a display panel and a repair method for the display panel. The display panel includes: an array substrate including a power signal trace and at least one auxiliary trace; a plurality of light-emitting devices arranged in an array on the array substrate, the light-emitting devices including a first electrode and a second electrode, the second electrode being disposed on a side of the first electrode away from the array substrate; wherein, the light-emitting device layer further includes a plurality of auxiliary electrodes arranged on the same layer as the first electrode, the auxiliary electrodes being correspondingly arranged with the first electrodes of at least one light-emitting device, the auxiliary electrodes being electrically connected to the auxiliary trace, and the potential of the auxiliary trace being less than the potential of the power signal trace. When there is a bright point in the display panel, the first electrode corresponding to the bright point and the auxiliary electrode are melted and short-circuited by laser irradiation, and then a low-potential signal is given to the auxiliary trace to eliminate the large voltage difference between the first electrode and the second electrode, so as to convert the bright point into a dark point, and thus the bright point abnormality in the display panel can be eliminated.

Description

Technical Field

[0001] The present application relates to the field of displays, and particularly to a display panel and a repair method for the display panel. Background Art

[0002] Organic light-emitting display panels (OLEDs) have been widely used in people's lives, such as the display screens of mobile phones, computers, etc. In the production and manufacturing of organic light-emitting display panels, due to various reasons, there are bright spots in the display panel. For example, short circuits caused by particles during the production process of the display panel, short circuits caused by etching residues of wiring or electrodes, anode short circuits, abnormalities caused by openings in the insulating layer, etc. The bright spots in the display panel not only reduce the yield of the display panel but also reduce the display quality.

[0003] Therefore, it is necessary to provide a display panel or a repair method for the display panel to improve or eliminate the bright spot abnormality in the display panel and improve the yield and display quality of the display panel. Summary of the Invention

[0004] Embodiments of the present application provide a display panel and a repair method for the display panel, which can improve or eliminate the problem of bright spot abnormality in the display panel, as well as the problems of reduced yield and display quality caused by the bright spot abnormality.

[0005] Embodiments of the present application provide a display panel, including:

[0006] An array substrate, including a power signal trace and at least one auxiliary trace;

[0007] A plurality of light-emitting devices, arranged in an array on the array substrate, the light-emitting devices including a first electrode and a second electrode, the second electrode being disposed on a side of the first electrode away from the array substrate;

[0008] Wherein, the display panel further includes a plurality of auxiliary electrodes disposed on the same layer as the first electrode, the auxiliary electrodes being correspondingly disposed with the first electrode of at least one of the light-emitting devices, the auxiliary electrodes being electrically connected to the auxiliary trace, and the potential of the auxiliary trace being less than the potential of the power signal trace.

[0009] Optionally, in some embodiments of the present application, the distance between the auxiliary electrode and the corresponding first electrode is less than or equal to 2 micrometers.

[0010] Optionally, in some embodiments of the present application, each auxiliary electrode is correspondingly disposed with the first electrode of a plurality of the light-emitting devices at the same time.

[0011] Optionally, in some embodiments of the present application, the multiple light-emitting devices include a red light-emitting device, a green light-emitting device, and a blue light-emitting device, and each of the auxiliary electrodes is correspondingly disposed with the first electrode of at least one of the red light-emitting devices, the first electrode of at least one of the green light-emitting devices, and the first electrode of at least one of the blue light-emitting devices.

[0012] Optionally, in some embodiments of the present application, the first electrode of at least one of the light-emitting devices is connected to the corresponding auxiliary electrode.

[0013] Optionally, in some embodiments of the present application, the array substrate further includes a thin-film transistor and a first metal layer between the thin-film transistor and the light-emitting device, and the auxiliary trace is disposed on the same layer as the first metal layer.

[0014] Optionally, in some embodiments of the present application, the first electrode is connected to the drain of the thin-film transistor through the first metal layer.

[0015] Optionally, in some embodiments of the present application, the array substrate further includes a thin-film transistor, and the thin-film transistor includes a gate, an active layer, and a source-drain electrode, and the auxiliary trace is disposed on the same layer as the gate or the source-drain electrode.

[0016] Optionally, in some embodiments of the present application, the array substrate further includes a second metal layer and a thin-film transistor disposed on the second metal layer, and the auxiliary trace is disposed on the same layer as the second metal layer.

[0017] Correspondingly, an embodiment of the present application further provides a method for repairing a display panel. In the display panel described in any one of the above, the method for repairing the display panel includes the following steps:

[0018] Step S100: By laser irradiation, electrically connect the auxiliary electrode and the corresponding first electrode in a molten manner;

[0019] Step S200: Supply a potential to the auxiliary trace, and the auxiliary trace supplies an electrical signal to the first electrode connected to the auxiliary electrode.

[0020] An embodiment of the present application provides a display panel and a repair method for the display panel. The display panel includes: an array substrate including a power signal trace and at least one auxiliary trace; a plurality of light-emitting devices arranged in an array on the array substrate, the light-emitting devices including a first electrode and a second electrode, and the second electrode is arranged on a side of the first electrode away from the array substrate; wherein, the light-emitting device layer further includes a plurality of auxiliary electrodes arranged on the same layer as the first electrode, the auxiliary electrodes are correspondingly arranged with the first electrodes of at least one light-emitting device, the auxiliary electrodes are electrically connected to the auxiliary traces, and the potential of the auxiliary traces is less than the potential of the power signal traces. When there are bright spots in the display panel, the first electrode corresponding to the bright spot and the auxiliary electrode are melted and short-circuited by laser irradiation, and then a low-potential signal is given to the auxiliary trace to eliminate the large voltage difference between the first electrode and the second electrode, so as to convert the bright spot into a dark spot. Therefore, the bright spot abnormality in the display panel can be improved or eliminated, and the yield and display quality of the display panel can be improved. Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can also be obtained according to these drawings.

[0022] Figure 1 It is the first partial top view schematic diagram of the auxiliary electrode of a display panel provided by an embodiment of the present application;

[0023] Figure 2 It is the second partial top view schematic diagram of the auxiliary electrode of a display panel provided by an embodiment of the present application;

[0024] Figure 3 It is the first cross-sectional structure schematic diagram of a display panel provided by an embodiment of the present application;

[0025] Figure 4 It is the second cross-sectional structure schematic diagram of a display panel provided by an embodiment of the present application;

[0026] Figure 5 It is the third cross-sectional structure schematic diagram of a display panel provided by an embodiment of the present application;

[0027] Figure 6 It is the fourth cross-sectional structure schematic diagram of a display panel provided by an embodiment of the present application;

[0028] Figure 7 It is the circuit principle schematic diagram of a repair method for a display panel provided by an embodiment of the present application;

[0029] Figure 8It is a schematic diagram of the repair process of a display panel repair method provided by an embodiment of the present application;

[0030] Figure 9 It is a schematic diagram of the first cross-sectional structure of a repaired display panel provided by an embodiment of the present application;

[0031] Figure 10 It is a schematic diagram of the second cross-sectional structure of a repaired display panel provided by an embodiment of the present application;

[0032] Figure 11 It is a schematic diagram of the flow steps of a display panel repair method provided by an embodiment of the present application. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application. In addition, it should be understood that the specific implementation manners described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, unless otherwise stated, the orientation words such as "upper" and "lower" usually refer to the upper and lower in the actual use or working state of the device, specifically the drawing direction in the drawings; and "inner" and "outer" refer to the outline of the device.

[0034] An embodiment of the present application provides a display panel, including: an array substrate including a power signal trace and at least one auxiliary trace; a plurality of light-emitting devices arranged in an array on the array substrate, the light-emitting devices including a first electrode and a second electrode, the second electrode being arranged on a side of the first electrode away from the array substrate; wherein, the light-emitting device layer further includes a plurality of auxiliary electrodes arranged on the same layer as the first electrode, the auxiliary electrodes are correspondingly arranged with the first electrodes of at least one light-emitting device, the auxiliary electrodes are electrically connected to the auxiliary traces, and the potential of the auxiliary traces is less than the potential of the power signal traces.

[0035] An embodiment of the present application provides a display panel and a repair method for the display panel. The following will be described in detail respectively. It should be noted that the description order of the following embodiments does not limit the preferred order of the embodiments.

[0036] Embodiment 1

[0037] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 , Figure 1The first partial top view schematic diagram of an auxiliary electrode of a display panel 200 provided by an embodiment of the present application; Figure 2 The second partial top view schematic diagram of an auxiliary electrode of a display panel 200 provided by an embodiment of the present application; Figure 3 The first cross-sectional structure schematic diagram of a display panel 200 provided by an embodiment of the present application; Figure 4 The second cross-sectional structure schematic diagram of a display panel 200 provided by an embodiment of the present application; Figure 5 The third cross-sectional structure schematic diagram of a display panel 200 provided by an embodiment of the present application; Figure 6 The fourth cross-sectional structure schematic diagram of a display panel 200 provided by an embodiment of the present application.

[0038] An embodiment of the present application provides a display panel 200. The display panel 200 includes an array substrate 100 and a plurality of light-emitting devices 220. The array substrate 100 includes a power signal trace 123 and at least one auxiliary trace 31. The plurality of light-emitting devices 220 are arranged in an array on the array substrate 100. The light-emitting device 220 includes a first electrode 221 and a second electrode 223. The second electrode 223 is disposed on a side of the first electrode 221 away from the array substrate 100. Wherein, the display panel 200 further includes a plurality of auxiliary electrodes 226 disposed on the same layer as the first electrode 221. The auxiliary electrodes 226 are correspondingly disposed with the first electrode 221 of at least one light-emitting device 220. The auxiliary electrodes 226 are electrically connected to the auxiliary trace 31, and the potential of the auxiliary trace 226 is less than the potential of the power signal trace 123.

[0039] Specifically, the plurality of light-emitting devices 220 may include a red light-emitting device 220R, a green light-emitting device 220G, a blue light-emitting device 220B, but are not limited thereto.

[0040] Specifically, the light-emitting device 220 includes a first electrode 221 and a second electrode 223. The second electrode 223 is disposed on a side of the first electrode 221 away from the array substrate 100. The light-emitting device 220 further includes a light-emitting material layer 222.

[0041] Specifically, the first electrode 221 may be an anode, and the second electrode 223 may be a cathode, but are not limited thereto. For example, the first electrode 221 may be a cathode, and the second electrode 223 may be an anode.

[0042] Specifically, the display panel 200 further includes a plurality of auxiliary electrodes 226 disposed on the same layer as the first electrode 221. The auxiliary electrodes 226 may be made of the same material as the first electrode 221, and the auxiliary electrodes 226 may be fabricated by the same process as the first electrode 221. For example, when patterning the first electrode metal layer 22 to form the first electrode 221, the first electrode 221 and the auxiliary electrodes 226 are simultaneously patterned.

[0043] Specifically, the auxiliary electrode 226 is disposed corresponding to the first electrode 221 of at least one light-emitting device 220, that is, the auxiliary electrode 226 is disposed adjacent to the first electrode 221 of at least one light-emitting device 220.

[0044] In this embodiment, a display panel 200 is provided. The array substrate 100 includes at least one auxiliary trace 31. The display panel 200 further includes a plurality of auxiliary electrodes 226 disposed on the same layer as the first electrode 221. The auxiliary electrode 226 is disposed adjacent to the first electrode 221 of at least one light-emitting device 220. The auxiliary electrode 226 is electrically connected to the auxiliary trace 31. When there is a bright point in the display panel 200, the first electrode 221 and / or the auxiliary electrode 226 corresponding to the bright point is irradiated by a laser. After the first electrode 221 and the auxiliary electrode 226 are melted and short-circuited, a low-potential signal is given to the auxiliary trace 31 to eliminate the large voltage difference between the first electrode 221 and the second electrode 223, thereby converting the bright point into a dark point. Therefore, the abnormal bright point in the display panel 200 can be improved or eliminated, and the yield and display quality of the display panel can be improved.

[0045] In some embodiments, the distance between the auxiliary electrode 226 and the corresponding adjacent first electrode 221 is less than or equal to 2 micrometers.

[0046] Specifically, the distance between the auxiliary electrode 226 and the corresponding adjacent first electrode 221 is small. When there is a bright point in the display panel 200, the first electrode 221 and / or the auxiliary electrode 226 corresponding to the bright point is irradiated by a laser, and it is easier for the first electrode 221 and the auxiliary electrode 226 to be melted and connected, thereby eliminating the bright point.

[0047] Furthermore, the distance between the auxiliary electrode 226 and the corresponding adjacent first electrode 221 is less than or equal to 1 micrometer, which can better repair the bright point.

[0048] In some embodiments, the array substrate 100 further includes a power signal trace 123, and the potential of the auxiliary trace 226 is less than the potential of the power signal trace 123.

[0049] Specifically, the power signal trace 123 is the VDD signal trace in the pixel driving circuit. The VDD signal trace is electrically connected to the first electrode 221 of the light-emitting device 220 through the driving transistor T1. The potential of the auxiliary trace 226 is lower than that of the power signal trace 123, that is, the potential of the auxiliary electrode 226 is at a low potential. The potential of the auxiliary electrode 226 is lower than that of the power signal trace 123. When there is a bright point in the display panel 200 and after repair, the first electrode 221 is connected to the auxiliary electrode 226, and the potential of the auxiliary trace 31 is supplied to the repaired first electrode 221. The large voltage difference between the repaired first electrode 221 and the second electrode 223 is reduced or eliminated. The light-emitting device 220 that was a bright point before repair does not emit light or emits very weakly. The light-emitting device 220 that was a bright point before repair thus turns into a dark point after repair, thereby turning the bright point into a dark point.

[0050] Furthermore, the potential of the auxiliary trace 31 is the same as that of the second electrode power signal trace, so that the potential of the repaired first electrode 221 is the same as that of the second electrode, thereby eliminating the bright point.

[0051] Furthermore, the second electrode is the cathode, and the second electrode power signal trace is the cathode signal trace VSS. The VDD signal trace and the cathode signal trace VSS of the pixel driving circuit will not be elaborated here.

[0052] In some embodiments, each auxiliary electrode 226 is correspondingly arranged with the first electrodes 221 of multiple light-emitting devices 220.

[0053] Specifically, as Figure 1 shown, the auxiliary electrode 226 is arranged adjacent to the first electrodes 221 of multiple light-emitting devices 220 at the same time, so that the number of auxiliary electrodes 226 is reduced, and the number of connection parts and connection holes between the auxiliary electrode 226 and the auxiliary trace 31 is reduced, improving the space utilization rate of the display panel 200, so that the display panel 200 has more space to set other structures.

[0054] Specifically, as Figure 2 shown, it is also possible to arrange an auxiliary electrode 226 adjacent to the first electrode 221 of one light-emitting device 220.

[0055] In some embodiments, the multiple light-emitting devices 220 include a red light-emitting device 220R, a green light-emitting device 220G, and a blue light-emitting device 220B. Each auxiliary electrode 226 is correspondingly arranged with the first electrode 221 of at least one red light-emitting device 220R, the first electrode 221 of at least one green light-emitting device 220G, and the first electrode 221 of at least one blue light-emitting device 220B.

[0056] As Figure 2As shown, the auxiliary electrode 226 is disposed adjacent to the first electrodes 221 of at least one red light-emitting device 220R, at least one green light-emitting device 220G, and at least one blue light-emitting device 220B. When a bright point appears, the same auxiliary electrode 226 can be connected to the red light-emitting device 220R, the green light-emitting device 220G, and the blue light-emitting device 220B within one pixel, and the red light-emitting device 220R, the green light-emitting device 220G, and the blue light-emitting device 220B within one pixel can be simultaneously changed into dark points, which can eliminate the color difference caused by a single light-emitting device 220 being changed into a dark point.

[0057] In some embodiments, the first electrode 221 of at least one light-emitting device 220 is connected to the corresponding auxiliary electrode 226.

[0058] Specifically, when the display panel 200 has a bright point, after the display panel 200 is repaired, there is a situation where the first electrode 221 of at least one light-emitting device 220 in the display panel 200 is connected to the corresponding auxiliary electrode 226, indicating that the bright point of the display panel 200 has been repaired, the yield of the display panel 200 is improved, and the display quality of the display panel 200 is improved.

[0059] Embodiment Two

[0060] This embodiment is the same as or similar to the above embodiment, except that the position of the auxiliary trace 31 is further described.

[0061] In some embodiments, the array substrate 100 further includes a thin-film transistor 300, a first metal layer 20 between the thin-film transistor 300 and the light-emitting device 220, and the auxiliary trace 31 is disposed on the same layer as the first metal layer 20.

[0062] Specifically, as Figure 3 shown, the array substrate 100 includes: a substrate 11, a thin-film transistor 300 disposed on the substrate 11, and a first metal layer 20 disposed on the thin-film transistor 300, and the auxiliary trace 31 is disposed on the same layer as the first metal layer 20.

[0063] Specifically, the auxiliary trace 31 is made of the same material as the first metal layer 20 and can be fabricated by the same process.

[0064] In some embodiments, the first electrode 221 is connected to the drain of the thin-film transistor 300 through the first metal layer 20.

[0065] Specifically, the first metal layer 20 includes a connection electrode 201. The connection electrode 201 is connected between the first electrode 221 and the drain of the thin film transistor 300, or the connection electrode 201 is connected between the first electrode 221 and the source of the thin film transistor 300. In this embodiment, the source and the drain can be interchanged, which are the two ends of the thin film transistor.

[0066] In some embodiments, the array substrate 100 further includes a thin film transistor 300. The thin film transistor 300 includes a gate 16, an active layer 14, and source / drain electrodes 18. The auxiliary trace 31 is disposed on the same layer as the gate 16 or the source / drain electrodes 18.

[0067] Specifically, as Figure 4 , Figure 5 shown, the auxiliary trace 31 is disposed on the same layer as the gate 16 or the source / drain electrodes 18, which can simplify the manufacturing process of the array substrate 100.

[0068] Specifically, the auxiliary trace 31 is made of the same material as the gate 16 or the source / drain electrodes 18 and can be fabricated by the same process.

[0069] In some embodiments, the array substrate 100 further includes a second metal layer 12 and a thin film transistor 300 disposed on the second metal layer 12. The auxiliary trace 31 is disposed on the same layer as the second metal layer 12.

[0070] Specifically, as Figure 6 shown, there is also a second metal layer 12 between the substrate 11 and the thin film transistor 300. The auxiliary trace 31 being disposed on the same layer as the second metal layer 12 can simplify the manufacturing process of the array substrate 100.

[0071] Specifically, the auxiliary trace 31 is made of the same material as the second metal layer 12 and can be fabricated by the same process.

[0072] Specifically, the second metal layer 12 can be patterned to form a light-shielding electrode 121 (LS), and the second metal layer 12 can be patterned to form structures such as a power signal trace 123 and a cathode signal trace VSS, which will not be elaborated here.

[0073] Specifically, Figure 3 illustrates by way of example that the array substrate 100 includes a substrate 11, a second metal layer 12, a first insulating layer 13, a semiconductor layer 14, a gate insulating layer 15, a gate 16, an interlayer insulating layer 17, a source / drain layer 18, a second insulating layer 19, a first metal layer 20, and a planarization layer 21 that are sequentially stacked.

[0074] Specifically, Figure 3For example, it is illustrated that the display panel 200 further includes a first electrode metal layer 22 disposed on the planarization layer 21 of the array substrate 100, a pixel definition layer 23 disposed on the first electrode metal layer 22, and a packaging layer 24 disposed on the light-emitting device 220. The first electrode metal layer 22 includes a first electrode 221 and an auxiliary electrode 226. Specifically, Figures 3 to 6 It is illustrated that the array substrate 100 includes thin-film transistors 300, and each thin-film transistor includes a semiconductor layer 14, a gate electrode 16, a gate insulating layer 15 between the semiconductor layer 14 and the gate electrode 16, and a source electrode 182 and a drain electrode 181 formed by metal patterning of a source-drain layer 18.

[0075] It should be noted that the source electrode 182 and the drain electrode 181 can be interchanged.

[0076] It should be noted that although Figure 3 a layer structure of an array substrate 100 is illustrated, the layer structure of the array substrate 100 is not limited thereto. For example, the power signal trace 123 and the cathode signal trace VSS may not be formed by using the second metal layer 12, and may also be formed by using other layer metals. For example, the thin-film transistor 300 of the array substrate 100 is a top-gate structure or a bottom-gate structure.

[0077] It should be noted that the materials of the respective layers of the array substrate 100 and the materials of the respective structures of the thin-film transistor 300 can be any materials in the prior art, and will not be elaborated herein.

[0078] It should be noted that the structure of the display panel 200 may further include a pixel definition layer 23 and a packaging layer 24 disposed on the second electrode 223, which will not be elaborated herein.

[0079] In this embodiment, the film layer position of the auxiliary trace 31 is further introduced, which can simplify the manufacturing process of the array substrate 100.

[0080] Embodiment III

[0081] Please refer to Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 、 Figure 11 , Figure 7 which is a schematic circuit diagram of a repair method for a display panel 200 provided by an embodiment of the present application; Figure 8 which is a schematic repair process diagram of a repair method for a display panel 200 provided by an embodiment of the present application; Figure 9 which is a first cross-sectional structure diagram of a repaired display panel 200 provided by an embodiment of the present application; Figure 10 which is a second cross-sectional structure diagram of a repaired display panel 200 provided by an embodiment of the present application; Figure 11Schematic diagram of the process steps of a repair method for a display panel 200 provided by an embodiment of the present application.

[0082] This embodiment provides a repair method for a display panel. In any one of the display panels 200 in the above embodiments, the display panel is repaired by using step S100 or / and step S200.

[0083] Step S100: By laser irradiation, the auxiliary electrode is electrically connected to the corresponding first electrode in a molten manner.

[0084] Specifically, as Figure 8 shown, by laser 50 irradiation, the auxiliary electrode 226 is electrically connected to the corresponding first electrode 221 in a molten manner.

[0085] Specifically, the auxiliary electrode 226 or / and the first electrode 221 are melted to form an auxiliary connection electrode 2216 (as Figure 9 shown in the dotted circle), and the auxiliary connection electrode 2216 connects the auxiliary electrode 226 and the corresponding first electrode 221.

[0086] Step S200: Supply a potential to the auxiliary trace, and the auxiliary trace supplies an electrical signal to the first electrode connected to the auxiliary electrode.

[0087] Specifically, supply a potential to the auxiliary trace 226, and the auxiliary trace 31 supplies an electrical signal to the first electrode 221 connected to the auxiliary electrode 226.

[0088] Specifically, the potential of the auxiliary trace 31 has been described in the above embodiments and will not be elaborated here.

[0089] Specifically, as Figure 9 shown, after the display panel is repaired, the first electrode 221 of at least one light-emitting device 220 is connected to the corresponding auxiliary electrode 226.

[0090] Specifically, when the display panel 200 has bright spots, after the display panel 200 is repaired, there is a situation where the first electrode 221 of at least one light-emitting device 220 in the display panel 200 is connected to the corresponding auxiliary electrode 226, indicating that the bright spots of the display panel 200 have been repaired, the yield rate of the display panel 200 has been improved, and the display quality of the display panel 200 has been improved.

[0091] Specifically, as Figure 10As shown, an example of the cause of a bright point after production is illustrated. During the fabrication process of the second metal layer 12, due to etching residue, the power signal trace 123 is short-circuited with the light-shielding electrode 121 and the drain 181. The residual metal 1214 is connected between the light-shielding electrode 121 and the power signal trace 123, causing the power signal trace 123 to be directly electrically connected to the first electrode 221 of the light-emitting device 220 without passing through the driving transistor T1 of the pixel driving circuit. As a result, the switching of this light-emitting device 220 is not controlled by the pixel driving circuit, and this light-emitting device 220 becomes a bright point. After the setting of the auxiliary electrode 226 of the above display panel 200 and the repair by the above display panel repair method, the first electrode 221 of this light-emitting device is connected to the auxiliary electrode 226, thereby turning into a dark point.

[0092] Specifically, as Figure 7 shown, the repair principle of the embodiment of the present application is illustrated with a circuit diagram. Figure 7 It is illustrated that the first electrode is the anode, the second electrode is the cathode, and the auxiliary trace 31 supplies the potential of the cathode signal trace VSS, or the auxiliary trace 31 is connected to the cathode signal trace VSS.

[0093] Specifically, as Figure 7 shown, each sub-pixel includes a pixel driving circuit. The pixel driving circuit includes at least one driving transistor T1, at least one switching transistor T2, and at least one capacitor C. The pixel driving circuit also drives the light-emitting device 220 to emit light. The pixel driving circuit is electrically connected to the data signal trace Data, the scan signal trace Scan, the power signal trace VDD, and the cathode signal trace VSS. Among them, the power signal trace VDD is electrically connected to the source of the driving transistor T1, and the power signal trace VDD is electrically connected to the first electrode of the light-emitting device 220 through the driving transistor T1. Among them, the cathode signal trace VSS is electrically connected to the cathode (the second electrode 223) of the light-emitting device 220, and the cathode signal trace VSS provides an electrical signal to the cathode of the light-emitting device 220.

[0094] Specifically, as Figure 10 shown, after adopting the repair method of the above display panel, the auxiliary electrode 226 or / and the first electrode 221 are melted to form an auxiliary connection electrode 2216. The auxiliary connection electrode 2216 connects the auxiliary electrode 226 and the corresponding first electrode 221, eliminating the large voltage difference between the first electrode 221 and the second electrode 223, thereby turning the bright point into a dark point. Therefore, the bright point abnormality in the display panel 200 can be improved or eliminated, and the yield and display quality of the display panel can be improved.

[0095] It should be noted that the pixel driving circuit includes but is not limited to Figure 7In the schematic structure, the pixel driving circuit can be the pixel driving circuit of any one in the prior art, and the detailed structure of the pixel driving circuit will not be described herein again.

[0096] The above has introduced in detail a display panel and a repair method of the display panel provided by the embodiments of the present application. Specific examples are used herein to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application; at the same time, for those skilled in the art, according to the idea of the present application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. A display panel, characterized in that, Comprising: An array substrate, including a power signal trace and at least one auxiliary trace; A plurality of light-emitting devices, arranged in an array on the array substrate, the light-emitting devices including a first electrode and a second electrode, the second electrode being disposed on a side of the first electrode away from the array substrate; Wherein, the display panel further includes a plurality of auxiliary electrodes disposed on the same layer as the first electrode, the auxiliary electrodes being correspondingly disposed with the first electrode of at least one of the light-emitting devices, the auxiliary electrodes being electrically connected to the auxiliary trace, and the potential of the auxiliary trace being less than the potential of the power signal trace; The plurality of light-emitting devices include red light-emitting devices, green light-emitting devices, and blue light-emitting devices; the auxiliary electrodes are adjacently disposed with the first electrode of the red light-emitting device, the first electrode of the green light-emitting device, and the first electrode of the blue light-emitting device within the same pixel; When there is a bright point in the display panel, the first electrode corresponding to the bright point and the auxiliary electrode are configured to be short-circuited by laser irradiation and melting, and the auxiliary trace is connected to a low-potential signal, so that the bright point is changed into a dark point.

2. The display panel according to claim 1, characterized in that, The distance between the auxiliary electrode and the corresponding first electrode is less than or equal to 2 microns.

3. The display panel according to claim 1, wherein Each of the auxiliary electrodes is correspondingly disposed with the first electrode of the plurality of light-emitting devices.

4. The display panel according to claim 1, wherein The first electrode of at least one of the light-emitting devices is connected to the corresponding auxiliary electrode.

5. The display panel according to any one of claims 1 to 4, characterized in that The array substrate further includes a thin-film transistor and a first metal layer disposed between the thin-film transistor and the light-emitting device, and the auxiliary trace is disposed on the same layer as the first metal layer.

6. The display panel according to claim 5, wherein The first electrode is connected to the drain of the thin-film transistor through the first metal layer.

7. The display panel according to any one of claims 1 to 4, characterized in that, The array substrate further includes a thin-film transistor, the thin-film transistor including a gate, an active layer, and a source-drain electrode, and the auxiliary trace is disposed on the same layer as the gate or the source-drain electrode.

8. The display panel according to any one of claims 1 to 4, characterized in that The array substrate further includes a second metal layer and a thin-film transistor disposed on the second metal layer, and the auxiliary trace is disposed on the same layer as the second metal layer.

9. A repair method for a display panel, characterized in that, In the display panel according to any one of claims 1 to 8, the repair method of the display panel includes the following steps: Step S100: By laser irradiation, the auxiliary electrode and the corresponding first electrode are electrically connected by melting; Step S200: Supply a potential to the auxiliary trace, and the auxiliary trace supplies an electrical signal to the first electrode connecting the auxiliary electrode.

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