Display panel and display panel repair method

Abstract

The embodiment of the present application discloses a display panel and a method for repairing the display panel. After manufacturing a first electrode, two adjacent first electrodes with residual electrodes are respectively a first sub-electrode and a second sub-electrode. A first extended electrode and a second extended electrode extending along the thickness direction of an array substrate are respectively formed at both ends of the residual electrode. The first extended electrode connects the first sub-electrode and a first signal wiring, and the second extended electrode connects the second sub-electrode and the second signal wiring. Electrical signals are respectively supplied to the first signal wiring and the second signal wiring, so that the residual electrode between the first extended electrode and the second extended electrode is melted and disconnected. Then, a laser is used to irradiate the first extended electrode and the second extended electrode, so that the first extended electrode and the second extended electrode are respectively melted and disconnected. The short circuit problem caused by the residual electrodes between the first electrodes of adjacent light-emitting devices can be solved, thereby improving the yield of the display panel and improving the display quality of the display panel.

Description

Technical Field

[0001] The present application relates to the display field, and in particular to a display panel and a method for repairing the display panel. Background Art

[0002] Organic light-emitting display panels (OLED) have been widely used in people's lives, such as display screens of mobile phones and computers. With the development of display technology, the resolution of organic light-emitting display panels is getting higher and higher (high PPI), such as Figure 1 As shown, Figure 1 The diagram shows the existence of residual electrodes 213 between adjacent first electrodes 210 of adjacent light-emitting devices in the prior art. The first electrode 210 is usually an anode of the light-emitting device. As the resolution of the organic light-emitting display panel becomes higher and higher, the distance between adjacent first electrodes 210 of adjacent light-emitting devices becomes smaller. During the manufacturing process of the first electrode 210, residual electrodes 213 are likely to appear. For example, the residual electrodes 213 are caused by etching residues, which causes a short circuit between adjacent first electrodes 210. In particular, when the adjacent first electrodes 210 correspond to light-emitting devices of different colors, poor display is likely to occur, thereby reducing the yield of the organic light-emitting display panel. For example, the display panel includes a plurality of light-emitting devices 200, and the plurality of light-emitting devices 200 include a red light-emitting device 200R, a green light-emitting device 200R, and a red light-emitting device 200R. There is a residual electrode 213 between the first electrodes 210 of the light-emitting device 200G, the blue light-emitting device 200B, the red light-emitting device 200R and the first electrode 210 of the green light-emitting device 200G, causing a short circuit. When the red light-emitting device 200R emits light, the green light-emitting device 200G also emits light, so that the display panel cannot display the required color. In the existing repair technology, the residual electrode 213 is directly irradiated with a laser to melt and break. However, a large amount of particles will be generated when the residual electrode 213 is melted and broken. The particles will even splash to various parts of the first electrode 210, thereby making the thickness of the subsequent film layer uneven, resulting in a decrease in display quality.

[0003] Therefore, it is necessary to propose a display panel and a method for repairing the display panel to solve the short circuit problem caused by residual electrodes between first electrodes of adjacent light-emitting devices, and the resulting problems of reduced yield and reduced display quality of the display panel. Summary of the invention

[0004] The embodiments of the present application provide a display panel and a method for repairing the display panel to solve the short circuit problem caused by residual electrodes between first electrodes of adjacent light-emitting devices, and the resulting problems of reduced yield and reduced display quality of the display panel.

[0005] An embodiment of the present application provides a display panel, including:

[0006] An array substrate;

[0007] A plurality of light emitting devices are arranged in an array on the array substrate, wherein the light emitting devices include a first electrode and a second electrode, wherein the second electrode is arranged on a side of the first electrode away from the array substrate;

[0008] The array substrate includes an extended electrode, at least one of the first electrodes is connected to the extended electrode, the extended electrode is arranged along the thickness direction of the array substrate and extends in the array substrate, and one end of the extended electrode is floatingly arranged.

[0009] Optionally, in some embodiments of the present application, the extended electrode includes a first extended electrode and a second extended electrode, the first extended electrode and the second extended electrode are arranged between at least two adjacent first electrodes, and the first extended electrode and the second extended electrode are respectively connected to two adjacent first electrodes.

[0010] Optionally, in some embodiments of the present application, the first electrode connected to the first extended electrode and the first electrode connected to the second extended electrode respectively correspond to the light-emitting devices of different colors.

[0011] Optionally, in some embodiments of the present application, the melting point of the material of the extended electrode is greater than the melting point of the material of the first electrode.

[0012] Optionally, in some embodiments of the present application, the material of the extended electrode includes any one of copper, aluminum, and graphene.

[0013] Accordingly, an embodiment of the present application further provides a method for repairing a display panel, comprising the following steps:

[0014] Step S100: providing an array substrate, wherein the array substrate comprises a first signal trace and a second signal trace;

[0015] Step S200: forming a plurality of first electrodes of a plurality of light-emitting devices arranged in an array on the array substrate, wherein the first electrode comprises adjacent first sub-electrodes and second sub-electrodes, and a residual electrode is provided between the first sub-electrode and the second sub-electrode, and the residual electrode is connected between the first sub-electrode and the second sub-electrode;

[0016] Step S300: irradiating a laser from one side of the array substrate to form a first through hole and a second through hole at corresponding positions at both ends of the residual electrode, respectively, wherein the first through hole is formed between the first sub-electrode and the first signal wiring, and the second through hole is formed between the second sub-electrode and the second signal wiring;

[0017] Step S400: injecting a conductive material into the first through hole and the second through hole to form an extended electrode, wherein the extended electrode includes a first extended electrode and a second extended electrode, wherein the first extended electrode connects the first sub-electrode and the first signal wiring, and the second extended electrode connects the second sub-electrode and the second signal wiring;

[0018] Step S500: supplying electrical signals to the first signal wiring and the second signal wiring respectively, so that the residual electrode between the first extension electrode and the second extension electrode is melted and disconnected;

[0019] Step S600: using laser to irradiate the first extended electrode and the second extended electrode, the first extended electrode is at least partially melted to disconnect the first sub-electrode and the first signal routing, and the second extended electrode is at least partially melted to disconnect the second sub-electrode and the second signal routing.

[0020] Optionally, in some embodiments of the present application, in the step S400, the melting point of the material of the extended electrode is greater than the melting point of the material of the first electrode.

[0021] Optionally, in some embodiments of the present application, the material of the extended electrode includes any one of copper, aluminum, and graphene.

[0022] Optionally, in some embodiments of the present application, in the step S500, the voltage difference between the first signal line and the second signal line is 15V to 30V.

[0023] Optionally, in some embodiments of the present application, the first signal routing is one of the power signal routing and the second cathode signal routing, and the second signal routing is the other of the power signal routing and the second cathode signal routing.

[0024] Optionally, in some embodiments of the present application, after step S600, the following steps are further included:

[0025] Step S700: forming a light-emitting material layer on the first electrode, forming a second electrode of the light-emitting device on the light-emitting material layer, and forming an encapsulation layer on the second electrode.

[0026] In an embodiment of the present application, a display panel and a display panel repair method are provided. In the manufacturing process of the display panel, after the first electrode is manufactured, two adjacent first electrodes with residual electrodes are respectively a first sub-electrode and a second sub-electrode. A laser is irradiated from one side of the array substrate to form a first through hole and a second through hole at the corresponding positions at both ends of the residual electrode, respectively. A conductive material is injected into the first through hole and the second through hole to form a first extended electrode and a second extended electrode, respectively. The first extended electrode is connected to the first sub-electrode and the first signal line, and the second extended electrode is connected to the second sub-electrode and the second signal line. An electrical signal is supplied to the first signal line and the second signal line respectively, so that the residual electrode between the first extended electrode and the second extended electrode is melted and disconnected. Then, the first extended electrode and the second extended electrode are irradiated with a laser to melt and disconnect the first extended electrode and the second extended electrode respectively. At least one first electrode of the repaired display panel is connected to the extended electrode, the extended electrode is arranged along the thickness direction of the array substrate and extends in the array substrate, and one end of the extended electrode is arranged in a floating manner. The repaired display panel eliminates the short circuit problem caused by the residual electrode between the first electrodes of adjacent light-emitting devices. The display panel and the display panel repair method provided in the embodiments of the present application can solve the short circuit problem caused by the residual electrode between the first electrodes of adjacent light-emitting devices, thereby improving the yield of the display panel and improving the display quality of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 is a schematic diagram of a residual electrode between first electrodes of adjacent light-emitting devices in the prior art;

[0029] Figure 2 It is a schematic diagram of the process steps of a display panel repair method provided by an embodiment of the present application;

[0030] Figure 3 This is a schematic diagram of a first process of a display panel repair method provided by an embodiment of the present application;

[0031] Figure 4 This is a schematic diagram of a second process of a display panel repair method provided by an embodiment of the present application;

[0032] Figure 5 This is a schematic diagram of a third process of a display panel repair method provided by an embodiment of the present application;

[0033] Figure 6 This is a schematic diagram of a fourth process of a display panel repair method provided by an embodiment of the present application;

[0034] Figure 7 This is a fifth process schematic diagram of a display panel repair method provided by an embodiment of the present application;

[0035] Figure 8 This is a first schematic diagram of a repairing principle of a display panel repairing method provided by an embodiment of the present application;

[0036] Fig. 9 This is a second schematic diagram of a repairing principle of a display panel repairing method provided by an embodiment of the present application;

[0037] Fig.10 is a first structural schematic diagram of a repaired display panel provided by an embodiment of the present application;

[0038] Fig.11 This is another schematic diagram of the process steps of a display panel repair method provided by an embodiment of the present application;

[0039] Fig.12 This is a second structural schematic diagram of a repaired display panel provided in an embodiment of the present application. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application. In addition, it should be understood that the specific implementation methods 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 directional words such as "upper" and "lower" used generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; while "inside" and "outside" refer to the outline of the device.

[0041] An embodiment of the present application provides a display panel, comprising: an array substrate; a plurality of light-emitting devices, which are arrayed on the array substrate, the light-emitting devices comprising 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 array substrate comprises an extended electrode, at least one first electrode being connected to the extended electrode, the extended electrode being arranged along a thickness direction of the array substrate and extending within the array substrate, and one end of the extended electrode being arranged in a floating manner.

[0042] The embodiments of the present application provide a display panel and a display panel repair method. The following are detailed descriptions. It should be noted that the description order of the following embodiments is not intended to limit the preferred order of the embodiments.

[0043] Embodiment 1

[0044] See also Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 2 A schematic diagram of the process steps of a display panel repair method provided in an embodiment of the present application; Figure 3 A schematic diagram of a first process of a display panel repair method provided in an embodiment of the present application; Figure 4 A schematic diagram of a second process of a display panel repair method provided in an embodiment of the present application; Figure 5 A schematic diagram of a third process of a display panel repair method provided in an embodiment of the present application; Figure 6 A schematic diagram of a fourth process of a display panel repair method provided in an embodiment of the present application; Figure 7 A fifth process schematic diagram of a display panel repair method provided in an embodiment of the present application; Figure 8 A first schematic diagram of a repairing principle of a display panel repairing method provided in an embodiment of the present application; Fig. 9 A second schematic diagram of a repairing principle of a display panel repairing method provided in an embodiment of the present application; Fig.10 A first structural schematic diagram of a repaired display panel provided in an embodiment of the present application; Fig.11 A schematic diagram of another process step of a display panel repair method provided in an embodiment of the present application; Fig.12 A second structural schematic diagram of a repaired display panel provided in an embodiment of the present application.

[0045] The present application embodiment provides a method for repairing a display panel, such as Figure 2 As shown, the display panel repair method includes the following steps: step S100, step S200, step S300, step S400, step S500, and step S600.

[0046] Step S100: providing an array substrate, wherein the array substrate comprises a first signal wiring and a second signal wiring.

[0047] Specifically, Figure 3 As shown, an array substrate 100 is provided. The array substrate 100 includes a first signal wiring 111 and a second signal wiring 112 .

[0048] Specifically, Figure 3 The array substrate 100 is illustrated as an example, including a base 11, a first metal layer 12, a first insulating layer 13, a semiconductor layer 14, a gate insulating layer 15, a gate metal layer 16, an interlayer insulating layer 17, a source and drain layer 18, a second insulating layer 19, a second metal layer 20, and a planar layer 21 which are stacked in sequence.

[0049] Specifically, Figure 3 The example illustrates that the array substrate 100 includes multiple transistors 300, each transistor includes an active area 141 formed by patterning the semiconductor layer 14, a gate 161 formed by patterning the gate metal layer 16, a gate insulating layer 15 between the active area 141 and the gate 161, and a source and a drain 181 formed by metal patterning of the source and drain layer 18.

[0050] Specifically, Figure 3 The example in which the first metal layer 12 is patterned to form the light shielding electrode 113, the first signal wiring 111 and the second signal wiring 112 is illustrated. The first signal wiring 111 and the second signal wiring 112 may also be formed by other layers of metal. Figure 3 and Figure 4 2 shows an example in which the second metal layer 20 is patterned to form a connecting electrode 201, and the connecting electrode 201 is connected between the drain 181 and the first electrode 210. In some embodiments, the second metal layer 20 and the connecting electrode 201 may not be provided, and the first electrode 210 may be directly connected to the connecting electrode 201.

[0051] It should be noted that although Figure 3 An example of a layer structure of an array substrate 100 is provided, but the layer structure of the array substrate 100 is not limited thereto. For example, the first signal wiring 111 and the second signal wiring 112 may be formed without using the first metal layer 12, and may also be formed using other layers of metal. For example, the transistor 300 of the array substrate 100 may be a thin film transistor with a top gate structure or a thin film transistor with a bottom gate structure, which is not limited here.

[0052] It should be noted that the materials of the various layers of the array substrate 100 and the materials of the various structures of the transistor 300 may be any material in the prior art, which will not be described in detail herein.

[0053] Step S200: forming a first electrode of a plurality of light-emitting devices arranged in an array on an array substrate, wherein the first electrode comprises adjacent first sub-electrodes and second sub-electrodes, and a residual electrode is provided between the first sub-electrode and the second sub-electrode, and the residual electrode is connected between the first sub-electrode and the second sub-electrode.

[0054] Specifically, Figure 4As shown, a plurality of first electrodes 210 of a plurality of light-emitting devices 200 arranged in an array are formed on an array substrate 100, wherein the first electrode 210 includes adjacent first sub-electrodes 211 and second sub-electrodes 212, and a residual electrode 213 (such as Figure 4 The residual electrode 213 is connected between the first sub-electrode 211 and the second sub-electrode 212 .

[0055] Specifically, a plurality of light emitting devices 200 arranged in an array are formed on the array substrate 100 , and each light emitting device 200 includes a first electrode 210 .

[0056] Specifically, when the first electrode metal layer 22 is formed on the array substrate 100, the first electrode metal layer 22 is patterned to form first electrodes 210 corresponding to each of the multiple light-emitting devices 200. At this time, due to the small distance between adjacent first electrodes 210 and other reasons, such as etching residues, there is a residual electrode 213 between at least two adjacent first electrodes 210.

[0057] Specifically, in order to facilitate the description of the inventive spirit of this embodiment, two adjacent first electrodes 210 with residual electrodes 213 are defined as a first sub-electrode 211 and a second sub-electrode 212 .

[0058] Step S300: irradiating laser from one side of the array substrate to form a first through hole and a second through hole at corresponding positions at both ends of the residual electrode, respectively. The first through hole is formed between the first sub-electrode and the first signal wiring, and the second through hole is formed between the second sub-electrode and the second signal wiring.

[0059] Specifically, Figure 5 As shown, laser is irradiated from one side of the array substrate 100 to form a first through hole 501 and a second through hole 502 at corresponding positions at both ends of the residual electrode 213, respectively. The first through hole 501 is formed between the first sub-electrode 211 and the first signal wiring 111, and the second through hole 502 is formed between the second sub-electrode 212 and the second signal wiring 112.

[0060] Specifically, a laser is irradiated from a side of the array substrate 100 away from the first electrode 210 to perform a laser drilling process, and a first through hole 501 and a second through hole 502 extending in the thickness direction of the array substrate 100 are formed at both ends of the residual electrode 213. The first through hole 501 is formed between the first sub-electrode 211 and the first signal wiring 111, and the second through hole 502 is formed between the second sub-electrode 212 and the second signal wiring 112.

[0061] Specifically, the first through hole 501 may pass through the first signal wiring 111 or be disposed in contact with the first signal wiring 111 , and the second through hole 502 may pass through the second signal wiring 112 or be disposed in contact with the second signal wiring 112 .

[0062] Step S400: Injecting conductive material into the first through hole and the second through hole to form extended electrodes, the extended electrodes including a first extended electrode and a second extended electrode, the first extended electrode connecting the first sub-electrode and the first signal trace, and the second extended electrode connecting the second sub-electrode and the second signal trace.

[0063] Specifically, Figure 6 As shown, a conductive material is injected into the first through hole 501 and the second through hole 502 to form an extended electrode 600, and the extended electrode 600 includes a first extended electrode 601 and a second extended electrode 602. Specifically, the first extended electrode 601 is formed in the first through hole 501, and the second extended electrode 602 is formed in the second through hole 502. The first extended electrode 601 connects the first sub-electrode 211 and the first signal wiring 111, and the second extended electrode 602 connects the second sub-electrode 212 and the second signal wiring 112.

[0064] Specifically, conductive material is injected from one side of the base 11 of the array substrate 100 so that the first extended electrode 601 connects the first sub-electrode 211 and the first signal wiring 111 , and the second extended electrode 602 connects the second sub-electrode 212 and the second signal wiring 112 .

[0065] Step S500: supplying electrical signals to the first signal wiring and the second signal wiring respectively, so that the residual electrode between the first extension electrode and the second extension electrode is melted and disconnected.

[0066] Specifically, Figure 7 , Figure 8 , Fig. 9 As shown, electrical signals are supplied to the first signal wiring 111 and the second signal wiring 112 respectively, so that the residual electrode 213 between the first extension electrode 601 and the second extension electrode 602 is melted and disconnected. The melting and disconnection process and principle of the residual electrode 213 will be further described later.

[0067] Step S600: using laser to irradiate the first extended electrode and the second extended electrode, the first extended electrode is at least partially melted to disconnect the first sub-electrode and the first signal wiring, and the second extended electrode is at least partially melted to disconnect the second sub-electrode and the second signal wiring.

[0068] Specifically, Fig.10As shown, the first extended electrode 601 and the second extended electrode 602 are irradiated with laser, the first extended electrode 601 is at least partially melted to disconnect the first sub-electrode 211 and the first signal trace 111, and the second extended electrode 602 is at least partially melted to disconnect the second sub-electrode 212 and the second signal trace 112.

[0069] Specifically, the first extended electrode 601 and the second extended electrode 602 are irradiated with laser from one side of the base 11 of the array substrate 100, so that the first extended electrode 601 and the second extended electrode 602 are melted and disconnected respectively, so that the first sub-electrode 211 is no longer electrically connected to the first signal wiring 111, and the second sub-electrode 212 is no longer electrically connected to the second signal wiring 112. Therefore, after the display panel is completed, when the display panel is displayed, the electrical signals on the first signal wiring 111 and the second signal wiring 112 no longer directly affect the electrical signals on the first electrode 210.

[0070] In some embodiments, in step S400 , the melting point of the material of the extension electrode 600 is greater than the melting point of the material of the first electrode 210 .

[0071] Specifically, the melting point of the material of the first extended electrode 601 and the second extended electrode 602 is greater than the melting point of the material of the first electrode 210. Then in step S500, when electrical signals are respectively supplied to the first signal wiring 111 and the second signal wiring 112, it is ensured that the residual electrode 213 is melted and disconnected first, and it is ensured that the first melted and disconnected part is on the residual electrode 213, thereby ensuring that the repair effect is achieved.

[0072] In some embodiments, the material of the extension electrode 600 includes any one of copper, aluminum, and graphene.

[0073] Specifically, the materials of the first extension electrode 601 and the second extension electrode 602 may also include materials other than copper, aluminum, and graphene.

[0074] In some embodiments, in step S500 , the voltage difference between the first signal trace 111 and the second signal trace 112 is 15V to 30V.

[0075] Specifically, the voltage difference between the first signal wiring 111 and the second signal wiring 112 is large enough, and in step S500 , the residual electrode 213 is more likely to be melted and disconnected.

[0076] In some embodiments, the first signal trace is one of a power signal trace and a cathode signal trace, and the second signal trace is the other of the power signal trace and the cathode signal trace.

[0077] Specifically, the power signal line VDD is multiplexed as the first signal line 111, and the cathode signal line VSS is multiplexed as the second signal line 112, so there is no need to additionally produce the first signal line 111 and the second signal line 112, thereby simplifying the manufacturing process of the display panel; or, the cathode signal line VSS is multiplexed as the first signal line 111, and the power signal line VDD is multiplexed as the second signal line 112, so there is no need to additionally produce the first signal line 111 and the second signal line 112, thereby simplifying the manufacturing process of the display panel.

[0078] Specifically, Figure 7 , Figure 8 , Fig. 9 As shown, please combine step S500, the display panel includes two adjacent sub-pixels 400, and there is a residual electrode 213 between the two first electrodes 210 of the two adjacent sub-pixels 400. For example, the display panel includes a red sub-pixel 400R and a green sub-pixel 400G, the red sub-pixel 400R and the green sub-pixel 400G are adjacent, and there is a residual electrode 213 between the first electrode 210 of the red sub-pixel 400R and the first electrode 210 of the green sub-pixel 400G, the first signal wiring 111 is a power signal wiring VDD, and the second signal wiring 112 is a cathode signal wiring VSS. After the above steps S100, S200, S300, and S400, during the repair process of the display panel, the cathode signal wiring VSS and the red sub-pixel 400 The first electrode 210 of R is connected through the second extended electrode 602, the power signal line VDD is connected to the first electrode 210 of the green sub-pixel 400G through the first extended electrode 601, and then electrical signals are supplied to the power signal line VDD and the cathode signal line VSS respectively, so that the residual electrode 213 is melted and disconnected, and then in step S600, the first extended electrode 601 and the second extended electrode 602 are irradiated with laser, so that the first extended electrode 601 and the second extended electrode 602 are melted and disconnected respectively. Therefore, after the display panel is completed, when the display panel is displayed, the power signal line VDD will not affect the normal display of the display panel through the first extended electrode 601, and the cathode signal line VSS will not affect the normal display of the display panel through the second extended electrode 602.

[0079] Specifically, Figure 8As shown, each sub-pixel 400 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 200 to make the light-emitting device 200 emit light. The pixel driving circuit is electrically connected to the data signal line Data, the scan signal line Scan, the power signal line VDD, and the cathode signal line VSS. Among them, the power signal line VDD is electrically connected to the source of the driving transistor T1, and the power signal line VDD is electrically connected to the first electrode of the light-emitting device 200 through the driving transistor T1. Among them, the cathode signal line VSS is electrically connected to the cathode of the light-emitting device 200, and the cathode signal line VSS provides the cathode of the light-emitting device 200 with an electrical signal.

[0080] It should be noted that the pixel driving circuit includes but is not limited to Figure 8 In the illustrated structure, the pixel driving circuit may be any pixel driving circuit in the prior art, and the detailed structure of the pixel driving circuit will not be described in detail herein.

[0081] In some embodiments, after step S600, step S700 is further included. Step S700: forming a light-emitting material layer on the first electrode, forming a second electrode of the light-emitting device on the light-emitting material layer, and forming an encapsulation layer on the second electrode.

[0082] Specifically, Fig.11 , Fig.12 As shown, after step S600 , step S700 is further included, forming a light-emitting material layer 24 on the first electrode 210 , forming a second electrode 25 of the light-emitting device 200 on the light-emitting material layer 24 , and forming an encapsulation layer 26 on the second electrode 25 .

[0083] Specifically, the light emitting device 200 includes a first electrode 210 and a second electrode 25 . The first electrode 210 may be an anode, and the second electrode 25 may be a cathode, but is not limited thereto.

[0084] It should be noted that after the first electrode 210 is manufactured, a pixel definition layer 23 may be formed and then the above-mentioned display panel repair method may be adopted for repair, or the pixel definition layer 23 may be manufactured after the above-mentioned display panel repair method is adopted for repair, which is not limited here.

[0085] Specifically, as described above, the repair process of the display panel is carried out during the production process of the display panel 1000, that is, after the production of the first electrode 210 is completed, it is detected whether there is a residual electrode 213 between adjacent first electrodes 210. If residual electrodes 213 are found between adjacent first electrodes 210, any one of the above-mentioned display panel repair methods is performed for repair.

[0086] The present embodiment provides a method for repairing a display panel. In a manufacturing process of the display panel, after manufacturing the first electrode 210, two adjacent first electrodes 210 having residual electrodes 213 are respectively the first sub-electrode 211 and the second sub-electrode 212. Laser is irradiated from one side of the array substrate 100 to form a first through hole 501 and a second through hole 502 at corresponding positions at both ends of the residual electrode 213, respectively. Conductive material is injected into the first through hole 501 and the second through hole 502 to form a first extended electrode 601 and a second extended electrode 602, respectively. The first extended electrode 601 connects the first sub-electrode 211 and the first signal wiring 111, and the second extended electrode 602 connects the second sub-electrode 212 and the second signal wiring 112. Electrical signals are respectively supplied to the first signal wiring 111 and the second signal wiring 112 to melt and disconnect the residual electrode 213 between the first extended electrode 601 and the second extended electrode 602. Laser is then used to irradiate the first extended electrode 601 and the second extended electrode 602 to melt and disconnect the first extended electrode 601 and the second extended electrode 602. The display panel repair method provided in the embodiment of the present application can solve the short circuit problem caused by the residual electrode between the first electrodes of adjacent light-emitting devices, thereby improving the yield of the display panel and improving the display quality of the display panel.

[0087] Embodiment 2

[0088] This embodiment provides a display panel 1000, which is manufactured after being repaired by any display panel repair method in the above embodiments. The display panel 1000 of this embodiment includes a residual structure after being repaired by any display panel repair method in embodiment one.

[0089] An embodiment of the present application provides a display panel 1000, which includes an array substrate 100 and a plurality of light-emitting devices 200. The plurality of light-emitting devices 200 are arranged in an array on the array substrate 100. The light-emitting devices 200 include a first electrode 210 and a second electrode 25. The second electrode 25 is arranged on a side of the first electrode 210 away from the array substrate 100. The array substrate 100 includes an extended electrode 600. At least one first electrode 210 is connected to the extended electrode 600. The extended electrode 600 is arranged along the thickness direction of the array substrate 100 and extends in the array substrate 100. One end of the extended electrode 600 is arranged in a floating manner.

[0090] Specifically, Fig.12As shown, in the manufacturing process of the display panel 1000, after being repaired by any one of the display panel repair methods in Example 1, a first extended electrode 601 and a second extended electrode 602 (the extended electrode 600 includes the first extended electrode 601 and the second extended electrode 602) are provided between two adjacent first electrodes 210 having residual electrodes 213 before the repair, that is, a first extended electrode 601 and a second extended electrode 602 are provided between the first sub-electrode 211 and the second sub-electrode 212, and the retention conditions of the first extended electrode 601 and the second extended electrode 602 in the display panel after the repair include: both of the first extended electrode 601 and the second extended electrode 602 are retained; one of the first extended electrode 601 and the second extended electrode 602 is retained and the other is completely melted by the laser; both of the first extended electrode 601 and the second extended electrode 602 are completely melted by the laser.

[0091] Specifically, generally, after repair, at least one of the first extended electrode 601 and the second extended electrode 602 is retained in the display panel; or the display panel includes multiple repair locations, and at least one of the first extended electrode 601 and the second extended electrode 602 in at least one repair location is retained, so that at least one first electrode 210 in the display panel 1000 after repair is connected to the extended electrode 600, and the extended electrode 600 is arranged along the thickness direction of the array substrate 100 and extends in the array substrate 100, and one end of the extended electrode 600 is arranged to float.

[0092] Specifically, the extended electrode 600 is disposed along the thickness direction of the array substrate 100 and extends inside the array substrate 100 , that is, the extended electrode 600 extends along the thickness direction of the array substrate 100 .

[0093] Specifically, preferably, the extended electrode 600 extends in a direction perpendicular to the base 11 of the array substrate 100 .

[0094] In some embodiments, the extended electrode 600 includes a first extended electrode 601 and a second extended electrode 602 , which are disposed between at least two adjacent first electrodes 210 , and the first extended electrode 601 and the second extended electrode 602 are connected to two adjacent first electrodes 210 , respectively.

[0095] Specifically, Fig.12 As shown, in the manufacturing process of the display panel 1000, after being repaired by any one of the display panel repair methods in Example 1, a first extended electrode 601 and a second extended electrode 602 are provided between two adjacent first electrodes 210 having a residual electrode 213 before the repair, that is, a first extended electrode 601 and a second extended electrode 602 are provided between the first sub-electrode 211 and the second sub-electrode 212.

[0096] Specifically, the first extended electrode 601 and the second extended electrode 602 are disposed along the thickness direction of the array substrate 100 and extend inside the array substrate 100 , that is, the first extended electrode 601 and the second extended electrode 602 extend along the thickness direction of the array substrate 100 .

[0097] Specifically, preferably, the first extension electrode 601 and the second extension electrode 602 extend in a direction perpendicular to the base 11 of the array substrate 100 .

[0098] Specifically, Fig.12 The example shows that a first extended electrode 601 and a second extended electrode 602 are disposed between the first electrode 210 corresponding to the red light emitting device 200R and the first electrode 210 corresponding to the green light emitting device 200G.

[0099] In some embodiments, one end of the first extension electrode 601 and the second extension electrode 602 are respectively connected to the corresponding first electrode 210 , and the other ends are respectively floated.

[0100] Specifically, in step S600 , after the first extension electrode 601 and the second extension electrode 602 are melted and disconnected, one end of the first extension electrode 601 and the second extension electrode 602 are respectively connected to the corresponding first electrode 210 .

[0101] Specifically, Fig.12 Schematically shows that one end of the first extension electrode 601 is connected to the first electrode 210, and the other end is floatingly arranged; Fig.12 It is shown that one end of the second extension electrode 602 is connected to the first electrode 210 , and the other end is floatingly arranged.

[0102] Specifically, the other ends of the first extension electrode 601 and the second extension electrode 602 are respectively floated, which means that the other ends of the first extension electrode 601 and the second extension electrode 602 are not electrically connected to other electrodes or wirings.

[0103] In some embodiments, the first electrode 210 connected to the first extended electrode 601 and the first electrode 210 connected to the second extended electrode 602 correspond to light-emitting devices of different colors, respectively.

[0104] Specifically, when there is residual electrode 213 between light-emitting devices of different colors, color crosstalk will occur when the light-emitting devices of different colors emit light, and the residual electrode 213 between light-emitting devices of different colors is more necessary to repair.

[0105] Specifically, repairing the residual electrodes 213 between light-emitting devices corresponding to different colors can better improve the display quality of the display panel 1000 .

[0106] In some embodiments, the melting point of the material of the extension electrode 600 is greater than the melting point of the material of the first electrode.

[0107] In some embodiments, the material of the extension electrode 600 includes any one of copper, aluminum, and graphene.

[0108] In the display panel 1000 of the present embodiment, after being repaired by the display panel repair method of the first embodiment, a first extended electrode 601 and a second extended electrode 602 are arranged between at least two adjacent first electrodes 210, the first extended electrode 601 and the second extended electrode 602 are respectively connected to the two adjacent first electrodes 210, the first extended electrode 601 and the second extended electrode 602 are arranged along the thickness direction of the array substrate 100, and extend in the array substrate 100, the repaired display panel 1000 eliminates the residual electrode 213 between the first electrodes 210 of the adjacent light-emitting devices 200, solves the short circuit problem caused by the residual electrode 213, thereby improving the yield of the display panel 1000 and improving the display quality of the display panel 1000.

[0109] The above is a detailed introduction to a display panel and a display panel repair method provided in an embodiment of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A method for repairing a display panel, characterized in that: The steps include: Step S100: providing an array substrate, wherein the array substrate comprises a first signal trace and a second signal trace; Step S200: forming a plurality of first electrodes of a plurality of light-emitting devices arranged in an array on the array substrate, wherein the first electrode comprises adjacent first sub-electrodes and second sub-electrodes, and a residual electrode is provided between the first sub-electrode and the second sub-electrode, and the residual electrode is connected between the first sub-electrode and the second sub-electrode; Step S300: irradiating a laser from one side of the array substrate to form a first through hole and a second through hole at corresponding positions at both ends of the residual electrode, respectively, wherein the first through hole is formed between the first sub-electrode and the first signal wiring, and the second through hole is formed between the second sub-electrode and the second signal wiring; Step S400: injecting a conductive material into the first through hole and the second through hole to form an extended electrode, wherein the extended electrode includes a first extended electrode and a second extended electrode, wherein the first extended electrode connects the first sub-electrode and the first signal wiring, and the second extended electrode connects the second sub-electrode and the second signal wiring; Step S500: supplying electrical signals to the first signal wiring and the second signal wiring respectively, so that the residual electrode between the first extension electrode and the second extension electrode is melted and disconnected; Step S600: using laser to irradiate the first extended electrode and the second extended electrode, the first extended electrode is at least partially melted to disconnect the first sub-electrode and the first signal routing, and the second extended electrode is at least partially melted to disconnect the second sub-electrode and the second signal routing.

2. The method for repairing a display panel according to claim 1, wherein: In the step S400 , the melting point of the material of the extension electrode is greater than the melting point of the material of the first electrode.

3. The method for repairing a display panel according to claim 2, wherein: The material of the extension electrode includes any one of copper, aluminum and graphene.

4. The method for repairing a display panel according to claim 1, wherein: In the step S500, the voltage difference between the first signal line and the second signal line is 15V to 30V.

5. The method for repairing a display panel according to claim 1, wherein: The first signal line is one of the power signal line and the second cathode signal line, and the second signal line is the other of the power signal line and the second cathode signal line.

6. The method for repairing a display panel according to claim 1, wherein: After step S600, the following steps are also included: Step S700: forming a light-emitting material layer on the first electrode, forming a second electrode of the light-emitting device on the light-emitting material layer, and forming an encapsulation layer on the second electrode.

7. A display panel, characterized in that: The display panel is prepared by using the display panel repair method according to any one of claims 1 to 6, wherein the display panel comprises: An array substrate; A plurality of light emitting devices are arranged in an array on the array substrate, wherein the light emitting devices include a first electrode and a second electrode, wherein the second electrode is arranged on a side of the first electrode away from the array substrate; The array substrate includes an extended electrode, at least one of the first electrodes is connected to the extended electrode, the extended electrode is arranged along the thickness direction of the array substrate and extends in the array substrate, and one end of the extended electrode is floatingly arranged.

8. The display panel according to claim 7, wherein: The extended electrode includes a first extended electrode and a second extended electrode. The first extended electrode and the second extended electrode are disposed between at least two adjacent first electrodes. The first extended electrode and the second extended electrode are respectively connected to two adjacent first electrodes.

9. The display panel according to claim 8, wherein: The first electrode connected to the first extended electrode and the first electrode connected to the second extended electrode respectively correspond to the light emitting devices of different colors.

10. The display panel according to claim 7, wherein: The melting point of the material of the extension electrode is greater than the melting point of the material of the first electrode.

11. The display panel according to claim 10, wherein: The material of the extension electrode includes any one of copper, aluminum and graphene.

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