Display panel, repairing method thereof and display device

Abstract

This invention provides a display panel, a repair method thereon, and a display device. The display panel includes multiple pixels, multiple signal lines, and a pixel repair structure. Each pixel includes a first pixel circuit and a light-emitting device; the signal lines extend along a first direction and are coupled to multiple first pixel circuits; the pixel repair structure includes a second pixel circuit, a first repair component, a second repair component, and a first compensation structure; the first compensation structure corresponds one-to-one with each signal line; the first repair component partially overlaps with at least one signal line, and the second repair component partially overlaps with at least one light-emitting device; the first repair component includes a first repair line, and the first input terminal of the second pixel circuit is coupled to the first repair line; the second repair component includes a second repair line, and the output terminal of the second pixel circuit is coupled to at least one second repair line. This invention can repair defective pixels in a display panel and ensure that the voltage drop on each signal line is basically the same after repair, thereby improving the display effect of the repaired display panel.

Description

Technical Field

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

[0002] Organic light-emitting diodes (OLEDs) are electroluminescent devices that utilize a multilayer organic thin-film structure. They are easy to manufacture and require only low driving voltages. OLED displays are thinner, lighter, brighter, consume less power, have faster response times, higher resolution, greater flexibility, and higher luminous efficiency than traditional LCDs, meeting consumers' evolving demands for display technology. Pixel circuits are required in the display panel to drive the OLED devices to emit light. If the pixel circuitry is defective, the corresponding OLED device will not light up, resulting in display defects and affecting the display quality. Summary of the Invention

[0003] This invention provides a display panel, a repair method thereon, and a display device to repair display defects and improve display performance.

[0004] In a first aspect, embodiments of the present invention provide a display panel, comprising:

[0005] A substrate, and multiple pixels and multiple signal lines located on one side of the substrate; each pixel includes a first pixel circuit and a light-emitting device; the signal lines extend along a first direction and are coupled to multiple first pixel circuits;

[0006] The pixel repair structure includes a second pixel circuit, a first repair component, a second repair component, and a first compensation structure; wherein,

[0007] The first compensation structure corresponds one-to-one with the signal line;

[0008] In a plane perpendicular to the substrate, the first repair component partially overlaps with at least one signal line, and the second repair component partially overlaps with at least one light-emitting device;

[0009] The first repair component includes a first repair line, and the first input terminal of the second pixel circuit is coupled to the first repair line; the second repair component includes a second repair line, and the output terminal of the second pixel circuit is coupled to at least one second repair line.

[0010] Secondly, embodiments of the present invention also provide a display device, including a display panel provided in any embodiment of the present invention.

[0011] Thirdly, embodiments of the present invention also provide a method for repairing a display panel, comprising:

[0012] A defect detection is performed on a display panel. The display panel includes multiple pixels, multiple signal lines, and a pixel repair structure. Each pixel includes a first pixel circuit and a light-emitting device. The signal lines extend along a first direction and are coupled to multiple first pixel circuits. The pixel repair structure includes a second pixel circuit, a first repair component, a second repair component, and a first compensation structure. The first compensation structure is coupled to each signal line in a one-to-one correspondence. In a plane perpendicular to the substrate, the first repair component partially overlaps with at least one signal line, and the second repair component partially overlaps with at least one light-emitting device. The first repair component includes a first repair line, and the first input terminal of the second pixel circuit is coupled to the first repair line. The second repair component includes a second repair line, and the output terminal of the second pixel circuit is coupled to at least one second repair line.

[0013] The location of the defective pixel is determined based on the defect detection results, and the first pixel circuit in the defective pixel is the defective pixel circuit.

[0014] Configure the display panel according to the location of the defective pixels, including:

[0015] The signal line electrically connected to the defective pixel circuit is the repair signal line. The repair signal line and the first compensation structure are disconnected from each other.

[0016] Configure the first repair line and the repair signal line to be coupled together;

[0017] The second repair line is coupled to the light-emitting device in the defective pixel.

[0018] The display panel, its repair method, and display device provided in this invention have the following beneficial effects: The pixel repair structure in the display panel includes a second pixel circuit, a first repair component, a second repair component, and a first compensation structure. When a defective pixel exists in the display panel, the first repair component is used to couple the first input terminal of the second pixel circuit to the signal line corresponding to the defective pixel; the second repair component is used to couple the output terminal of the second pixel circuit to the light-emitting device in the defective pixel, thereby enabling the second pixel circuit to drive the light-emitting device in the defective pixel to emit light, thus achieving the repair of the defective pixel. Furthermore, in this embodiment of the invention, the first compensation structure corresponds one-to-one with the signal lines. When there are defective pixels in the display panel, the signal line corresponding to the defective pixel is decoupled from the first compensation structure, while other signal lines in the display panel are coupled to the first compensation structure respectively. The first compensation structure is used to pre-compensate the parasitic capacitance on the signal lines. When the capacitance compensated by the first compensation structure is set to be basically the same as the parasitic capacitance introduced by the pixel repair structure, the parasitic capacitance on the signal line coupled to the first repair component is basically the same as the parasitic capacitance on the signal line coupled to the first compensation structure. As a result, the delay on each signal line in the display panel is basically the same, thereby improving the display effect of the repaired display panel. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of a display panel in the prior art;

[0021] Figure 2 A schematic diagram of a display panel provided in an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of a pixel circuit in a display panel provided in an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of another display panel provided in an embodiment of the present invention;

[0024] Figure 5 A flowchart of the repair method provided in an embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram of another display panel provided in an embodiment of the present invention;

[0026] Figure 7 for Figure 2 Enlarged view of the central region Q1 location;

[0027] Figure 8 for Figure 7 Schematic diagram of the cross section at the position of the mid-tangent AA′;

[0028] Figure 9 This is a schematic diagram of another display panel provided in an embodiment of the present invention;

[0029] Figure 10 This is a schematic diagram of another display panel provided in an embodiment of the present invention;

[0030] Figure 11 This is a schematic diagram of another display panel provided in an embodiment of the present invention;

[0031] Figure 12 A partial cross-sectional schematic diagram of another display panel provided in an embodiment of the present invention;

[0032] Figure 13 for Figure 12 A schematic diagram of a cross-section at the location of the tangent line BB′;

[0033] Figure 14A partial schematic diagram of another display panel provided in an embodiment of the present invention;

[0034] Figure 15 for Figure 14 A schematic diagram of the pixel circuit in the embodiment;

[0035] Figure 16 for Figure 14 A schematic diagram of a cross-section at the position of the tangent CC′;

[0036] Figure 17 A partial cross-sectional schematic diagram of another display panel provided in an embodiment of the present invention;

[0037] Figure 18 A partial schematic diagram of another display panel provided in an embodiment of the present invention;

[0038] Figure 19 for Figure 18 A schematic diagram of a cross-section at the location of the tangent line DD′;

[0039] Figure 20 A partial schematic diagram of another display panel provided in an embodiment of the present invention;

[0040] Figure 21 A partial schematic diagram of another display panel provided in an embodiment of the present invention;

[0041] Figure 22 A partial schematic diagram of another display panel provided in an embodiment of the present invention;

[0042] Figure 23 A schematic diagram of another display panel provided in an embodiment of the present invention;

[0043] Figure 24 This is a schematic diagram of another display panel provided in an embodiment of the present invention;

[0044] Figure 25 This is a schematic diagram of another display panel provided in an embodiment of the present invention;

[0045] Figure 26 This is a schematic diagram of another display panel provided in an embodiment of the present invention;

[0046] Figure 27 This is a schematic diagram of another display panel provided in an embodiment of the present invention;

[0047] Figure 28 This is a schematic diagram of another display panel provided in an embodiment of the present invention;

[0048] Figure 29 This is a schematic diagram of another display panel provided in an embodiment of the present invention;

[0049] Figure 30 This is a schematic diagram of another circuit structure in a display panel provided in an embodiment of the present invention;

[0050] Figure 31 This is a schematic diagram of a display device provided in an embodiment of the present invention. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0052] The terminology used in the embodiments of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms “a,” “the,” and “the” as used in the embodiments of this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0053] Figure 1 This is a schematic diagram of a display panel in the prior art, such as... Figure 1 As shown, the display panel includes multiple pixels sp, each pixel sp includes a pixel circuit 01 and a light-emitting device 02, and the pixel circuit 01 and the light-emitting device are correspondingly coupled. Figure 1 The diagram also illustrates data lines 03, scan lines 04, and illumination control lines 05 in the display panel. Data line 03 is coupled to multiple pixel circuits 01 arranged in the column direction x, scan line 04 is coupled to multiple pixel circuits 01 arranged in the row direction y, and illumination control line 05 is coupled to multiple pixel circuits 01 arranged in the row direction y. A pixel repair circuit 06 is provided in the display panel, with one pixel repair circuit 06 corresponding to each row of pixel circuits. The pixel repair circuit 06 is coupled to the corresponding scan line 04 and illumination control line 05. Multiple pixel repair circuits 06 arranged in the column direction x are connected to the same repair line 09. The data input terminal of the pixel repair circuit 06 is coupled to the repair line 09, the repair line 09 is coupled to a first connecting line 07 extending in the row direction y, and the output terminal of the pixel repair circuit 06 is coupled to a second connecting line 08.

[0054] When there is a defect in the pixel circuit 01 in pixel sp, the pixel repair circuit 06 is coupled to the data line 03 corresponding to the defective pixel through the first connection line 07, and the pixel repair circuit 06 is coupled to the light-emitting device 02 in the defective pixel through the second connection line 08, so as to drive the light-emitting device 02 in the defective pixel to emit light through the pixel repair circuit 06. Figure 1The diagram illustrates a defective pixel sp-1. Taking the defective pixel circuit 01(2,3) in the second row and third column as an example, if pixel circuit 01(2,3) is defective, it cannot drive the corresponding light-emitting device 02 to emit light. Therefore, the first connecting line 07 is coupled to the data line 03 corresponding to pixel circuit 01(2,3), and the light-emitting device 02 corresponding to pixel circuit 01(2,3) is coupled to the second connecting line 08. The pixel repair circuit 06 provides the driving signal to the light-emitting device 02 through the second connecting line 08, driving the light-emitting device 02 to emit light, thereby repairing the defective pixel sp-1 and enabling it to work normally.

[0055] When repairing the defective pixel sp-1 in the display panel using the above method, the coupling of the first connecting line 07 with the data line 03 corresponding to the defective pixel sp-1 introduces a large parasitic capacitance into the data line 03. Specifically, parasitic capacitance exists between the first connecting line 07 and the overlapping data line 03, and also between the repair line 09 and the multiple overlapping scan lines 04 and multiple light-emitting control lines 05. All of these significantly increase the load on the data line 03 corresponding to the defective pixel sp-1. In other words, when the pixel repair circuit 06 is activated to drive the light-emitting device 02 to emit light, the parasitic capacitance on the data line 03 corresponding to the defective pixel sp-1 is much larger than that on the regular data line 03. This results in a significant difference in data signal transmission, leading to a difference in display brightness between the pixel corresponding to the data line 03 electrically connected to the defective pixel sp-1 and the pixel corresponding to the regular data line 03, thus affecting the display effect.

[0056] To address the aforementioned issues, this invention provides a display panel that utilizes a compensation structure to pre-compensate the capacitance of signal lines. When defective pixels need repair, a pixel repair structure is used to drive the light-emitting device in the defective pixel to emit light, and the coupling between the signal line corresponding to the defective pixel and the corresponding compensation structure is disconnected. When the capacitance compensated by the compensation structure is set to be substantially the same as the parasitic capacitance introduced by the pixel repair structure, the parasitic capacitance on the signal line corresponding to the defective sub-pixel is substantially the same as the parasitic capacitance on the conventional signal line, thereby ensuring that the delay on each signal line is substantially the same, improving the brightness uniformity of the display panel after repair.

[0057] Figure 2 This is a schematic diagram of a display panel provided in an embodiment of the present invention. Figure 3 This is a schematic diagram of a pixel circuit in a display panel provided in an embodiment of the present invention.

[0058] The display panel provided in this embodiment of the invention includes a substrate, and multiple pixels and multiple signal lines located on one side of the substrate. For example... Figure 2The diagram illustrates multiple pixels sp and multiple signal lines 10. Each pixel sp includes a first pixel circuit 20 and a light-emitting device 30. The light-emitting device 30 includes a stacked first electrode, a light-emitting layer, and a second electrode. In some embodiments, the light-emitting device 30 is an organic light-emitting device; in other embodiments, the light-emitting device 30 is an inorganic light-emitting device.

[0059] Figure 3 The pixel circuit shown in the diagram includes 7 transistors and 1 capacitor, also known as a 7T1C pixel circuit. Figure 3 As shown, the pixel circuit includes a driving transistor Tm, a data writing transistor T1, a threshold compensation transistor T2, a gate reset transistor T3, an anode reset transistor T4, a first light-emitting control transistor T5, and a second light-emitting control transistor T6. Figure 3 The diagram also illustrates the first scan signal C1, the second scan signal C2, the light emission control signal E, the power supply signal P, the reset signal Ref, the data signal Data, and the storage capacitor Cst. It should be noted that the gate reset transistor T3 and the anode reset transistor T4 can be controlled by the same gate signal line or by two different gate signal lines, depending on the actual design requirements. Figure 3 Only one of the optional cases is shown in the figure.

[0060] The gate of gate reset transistor T3 receives the second scan signal C2, its first electrode receives the reset signal Ref, and its second electrode is coupled to node N1. The gate of driving transistor Tm is coupled to node N1, its first electrode is coupled to node N2, and its second electrode is coupled to node N3. The gate of electrode reset transistor T4 receives the second scan signal C2, its first electrode receives the reset signal Ref, and its second electrode is coupled to node N4. The first electrode of light-emitting device 30 is connected to node N4. The gate of data writing transistor T1 receives the first scan signal C1, its first electrode receives the data signal Data, and its second electrode is coupled to node N2. The gate of threshold compensation transistor T2 receives the first scan signal C1, its first electrode is coupled to node N3, and its second electrode is coupled to node N1. The gate of the first light-emitting control transistor T5 and the gate of the second light-emitting control transistor T6 both receive the light-emitting control signal E. The first terminal of the first light-emitting control transistor T5 receives the power supply signal P, and the second terminal of the first light-emitting control transistor T5 is coupled to node N2. The first terminal of the second light-emitting control transistor T6 is coupled to node N3, and the second terminal of the second light-emitting control transistor T6 is coupled to node N4.

[0061] Figure 3This illustration only shows one optional pixel circuit structure and is not intended to limit the embodiments of the present invention. The first pixel circuit 20 in pixel sp can adopt... Figure 3 The structure shown in the diagram.

[0062] like Figure 2 As shown, signal line 10 in the display panel extends along a first direction a and is coupled to multiple first pixel circuits 20. That is, multiple first pixel circuits 20 are coupled to the same signal line 10. This also indicates that one signal line 10 corresponds to multiple pixels sp.

[0063] Figure 2 Taking signal line 10 as an example of a data line, the display panel also includes scan line 40 and light emission control line 50. Scan line 40 extends along the second direction b and is coupled to multiple first pixel circuits 20. Light emission control line 50 extends along the second direction b and is coupled to multiple first pixel circuits 20. The second direction b intersects with the first direction a. (Refer to...) Figure 3 The schematic pixel circuit is understood as follows: scan line 40 includes a scan line providing a first scan signal C1 and a scan line providing a second scan signal C2; light emission control line 50 provides a light emission control signal E. The display panel also includes a reset signal line and a power signal line. The reset signal line is used to provide a reset signal to the pixel circuit, and the power signal line is used to provide a power signal to the pixel circuit.

[0064] Figure 2 The diagram illustrates a plurality of first pixel circuits 20 coupled to the same signal line 10, arranged in the first direction a, that is, a column of first pixel circuits 20 is correspondingly coupled to the same signal line 10. In some embodiments, two columns of first pixel circuits 20 are coupled to the same signal line 10, which are not illustrated in the diagram here.

[0065] like Figure 2 As shown, the display panel also includes a pixel repair structure 60, which is used to repair defective pixels in the display panel to ensure that defective pixels with display defects can be displayed normally. The pixel repair structure 60 includes a second pixel circuit 61, a first repair component 62, a second repair component 63, and a first compensation structure 64; wherein, the first compensation structure 64 corresponds one-to-one with the signal lines 10, that is, one first compensation structure 64 corresponds to one signal line 10. The first compensation structure 64 is used to compensate for parasitic capacitance on the signal lines 10. The specific structure of the first compensation structure 64 and whether the first compensation structure 64 is coupled to the signal lines 10 will be described in the following related embodiments.

[0066] Figure 2This is a simplified top view of the display panel, and does not show the substrate or other structures of the display panel. In this embodiment of the invention, the first repair element 62 and at least one signal line 10 partially overlap in a plane perpendicular to the substrate. The specific implementation of the partial overlap between the first repair element 62 and the signal line 10 will be described in the following related embodiments. In some embodiments, the first repair element 62 includes a first repair line 621, which at least partially overlaps with the corresponding signal line 10. In other embodiments, the first repair element 62 also includes a first repair pad, which partially overlaps with the corresponding signal line 10. In still other embodiments, the first repair element 62 also includes a first transistor, which partially overlaps with the corresponding signal line 10 in a plane perpendicular to the substrate. Figure 2 In this embodiment, the overlap between the first repair line 621 and the signal line 10 is only shown for illustration. Specifically, when there are defective pixels in the display panel, the first repair element 62 and the corresponding signal line 10 overlap and are coupled; when there are no defective pixels in the display panel, neither the first repair element 62 nor the overlapping signal line 10 is coupled.

[0067] In a direction perpendicular to the plane of the substrate, the second repair element 63 and at least one light-emitting device 30 partially overlap. In some embodiments, the second repair element 63 includes a second repair line 631 and a second repair pad, wherein the second repair pad overlaps with the first electrode portion of the light-emitting device 30. Figure 2 The light-emitting device 30 is only shown in a simplified diagram, and the second repair pad in the second repair component 63 is not shown. When there are defective pixels in the display panel, the second repair component 63 and the light-emitting device 30 in the defective pixel overlap and are coupled; when there are no defective pixels in the display panel, neither the second repair component 63 nor the overlapping light-emitting device 30 is coupled.

[0068] In the pixel repair structure 60: the first input terminal of the second pixel circuit 61 is coupled to the first repair component 62, specifically, the first input terminal of the second pixel circuit 61 is coupled to the first repair line 621; the output terminal of the second pixel circuit 61 is coupled to the second repair component 63, specifically, the output terminal of the second pixel circuit 61 is coupled to at least one second repair line 631.

[0069] Using the second pixel circuit 61 as Figure 3Taking the illustrated pixel circuit structure as an example, when signal line 10 is a data line, the first input terminal of the second pixel circuit 61 is the data signal input terminal, which is also the first electrode of the data writing transistor T1. The output terminal of the second pixel circuit 61 is the port for outputting the drive current. The output terminal of the second pixel circuit 61 can be understood as the second electrode of the second light-emitting control transistor T6. Alternatively, the output terminal of the second pixel circuit 61 can also be the connection point between the pixel circuit and the anode of the light-emitting device 30.

[0070] In other embodiments, signal line 10 is a scan line. When signal line 10 is a first scan line used to provide a first scan signal C1, the first input terminal of the second pixel circuit 61 can be understood as the gate of the data writing transistor T1. When signal line 10 is a second scan line used to provide a second scan signal C2, the first input terminal of the second pixel circuit 61 can be understood as the gate of the gate reset transistor T3.

[0071] Figure 2 The diagram illustrates multiple second pixel circuits 61, which are coupled to corresponding scan lines 40 and light emission control lines 50 to ensure that each transistor in the second pixel circuit 61 can work normally when the second pixel circuit 61 needs to be activated. Figure 2 As illustrated, multiple first pixel circuits 20 are arranged in a pixel circuit row 20H in the second direction b. One second pixel circuit 61 corresponds to a row of first pixel circuits 20. That is, the second pixel circuit 61 and the first pixel circuit 20 in the row are coupled to the same scan line 40 and the same light emission control line 50, so as to realize the working synchronization between defective pixels and pixels in the same row.

[0072] The display panel provided in this embodiment of the invention includes a pixel repair structure 60, which comprises a second pixel circuit 61, a first repair component 62, a second repair component 63, and a first compensation structure 64. When a defective pixel exists in the display panel, the first repair component 62 is used to couple the first input terminal of the second pixel circuit 61 to the signal line 10 corresponding to the defective pixel; the second repair component 63 is used to couple the output terminal of the second pixel circuit 61 to the light-emitting device 30 in the defective pixel. This allows the second pixel circuit 61 to drive the light-emitting device 30 in the defective pixel to emit light, replacing the original pixel circuit in the faulty defective pixel and thus repairing the defective pixel. Furthermore, in this embodiment of the invention, the first compensation structure 64 corresponds one-to-one with the signal line 10. When there are defective pixels in the display panel, the signal line 10 corresponding to the defective pixel is set to be uncoupled from the first compensation structure 64, while other signal lines 10 in the display panel are coupled to the first compensation structure 64 respectively. The parasitic capacitance on the signal line 10 is pre-compensated by the first compensation structure 64. When the capacitance compensated by the first compensation structure 64 is set to be basically the same as the parasitic capacitance introduced by the pixel repair structure 60, the parasitic capacitance on the signal line 10 coupled to the first repair component 62 is basically the same as the parasitic capacitance on the signal line 10 coupled to the first compensation structure 64. This makes the load on each signal line in the display panel basically the same, avoiding brightness deviation caused by different signal delays between different signal lines 10 due to large differences in load on different signal lines 10, and improving the display effect of the display panel after the defective pixel is repaired using the repair structure.

[0073] In this embodiment of the invention, when the pixel repair structure 60 repairs defective pixels in the display panel, the first input terminal of the second pixel circuit 61 is coupled to the signal line 10 corresponding to the defective pixel through the first repair component 62. This effectively extends the length of the signal line 10 corresponding to the defective pixel. Since the signal line 10 passes through more pixel circuit structures, the parasitic capacitance on the signal line 10 corresponding to the defective pixel increases. After the parasitic capacitance on the signal line 10 connected to the defective pixel increases, the load on this signal line increases, resulting in a significant difference in signal transmission compared to the conventional signal line 10 (the signal line not connected to the defective pixel). This leads to increased signal delay and signal deviation received by all pixels electrically connected to the signal line 10 corresponding to the defective pixel, affecting the display brightness of these pixels and resulting in poor display performance. The signal line 10 corresponding to the defective pixel is the repair signal line, while the remaining signal lines 10 overlapping with the first repair component 62 are non-repair signal lines. The parasitic capacitance added to the repair signal line includes at least the parasitic capacitance between the first repair component 62 and the non-repair signal line overlapping with it, and the parasitic capacitance between the first repair line 621 coupled to the second pixel circuit 61 and multiple scan lines or multiple light emission control lines in the display panel.

[0074] In some embodiments, the signal line 10 can be a data line, and the display panel is provided with a plurality of second pixel circuits 61, the arrangement direction of the plurality of second pixel circuits 61 being the same as the extension direction of the data line. When the signal line 10 is a data line, and there are defective pixels in the display panel that need to be repaired by the pixel repair structure 60, the first repair member 62 is coupled to a data line that overlaps with it, and this data line is not coupled to the first compensation structure 64. The second repair member 63 is coupled to a light-emitting device 30, and the second pixel circuit 61 is used to drive the light-emitting device 30 to emit light. This data line is the data line corresponding to the defective pixel, transmitting the data signal required by the light-emitting device in the defective pixel when it emits light for display. After the first repair member 62 is coupled to the data line, parasitic capacitance is introduced on the data line, including at least the parasitic capacitance between the first repair member 62 and the data line that overlaps with it but is not coupled, and the parasitic capacitance between the first repair line 621 coupled to the second pixel circuit 61 and the scan line or the light-emitting control line. In this embodiment of the invention, all data lines except those coupled to the first repair component 62 are coupled to the first compensation structure 64. The first compensation structure 64 is used to compensate for the capacitance, so that after the pixel repair structure 60 is activated, the parasitic capacitance on each data line in the display panel is basically the same, and the voltage drop on each data line is basically the same, which can ensure display uniformity.

[0075] In some embodiments, Figure 4 This is another schematic diagram of a display panel provided in an embodiment of the present invention, such as... Figure 4 As shown, signal line 10 can be a scan line, and the arrangement direction of the plurality of second pixel circuits 61 in the display panel is the same as the extension direction of the scan line. Signal line 10 extends along a first direction a, and the display panel also includes data line 44, which extends along a second direction b. The scan line corresponds one-to-one with the first compensation structure 64, the first repair component 62 partially overlaps with at least one scan line, and the second repair component 63 partially overlaps with at least one light-emitting device 30. Furthermore, the scan signal input terminal of the second pixel circuit 61 (e.g., the gate of data writing transistor T1 or the gate of gate reset transistor T3) is coupled to the first repair line 621, and the output terminal of the second pixel circuit 61 is coupled to the second repair line 631. Figure 4 The diagram illustrates a first pixel circuit 20 corresponding to a second pixel circuit 61. The second pixel circuit 61 can repair any pixel sp located in the corresponding first pixel circuit 20. When the signal line 10 is a scan line, the pixel repair structure 60 in the display panel is activated. The first repair component 62 is coupled to an overlapping scan line, but this scan line is not coupled to the first compensation structure 64. The second repair component 63 is coupled to a light-emitting device 30, and the second pixel circuit 61 drives the light-emitting device 30 to emit light. After coupling the first repair component 62 to the scan line, parasitic capacitance is introduced on the scan line, increasing the parasitic capacitance on the scan line. In this embodiment of the invention, all scan lines except those coupled to the first repair component 62 are coupled to the first compensation structure 64. The first compensation structure 64 is used to compensate for the capacitance, so that after the pixel repair structure 60 is activated, the parasitic capacitance on each scan line in the display panel is basically the same, and the voltage drop on each scan line is basically the same. This ensures that the working process of the first pixel circuit 20 driven by the scan line is basically the same, thus ensuring display uniformity.

[0076] Furthermore, this application utilizes the first repair component 62 to directly connect the second pixel circuit 61 to the signal line 10 corresponding to the defective pixel, and utilizes the second repair component 63 to connect the second pixel circuit 61 to the light-emitting device 30 in the defective pixel. This achieves direct connection of the second pixel circuit 61 to the pixel row where the defective pixel is located, ensuring that pixels in the same row are turned on simultaneously, resulting in better image synchronization. Moreover, it eliminates the need for the driver chip to additionally calculate the data corresponding to the defective pixel, saving driver chip power consumption and reducing complexity. The first compensation structure 64 can be set in the non-display areas on both sides of the same direction of the display panel, reducing the area of ​​a single first compensation structure 64, decreasing the width of the single-sided bezel, and enhancing adjustability.

[0077] exist Figure 2As illustrated in the embodiment, the first compensation structure 64 is coupled one-to-one with the signal line 10. In each pixel sp, the first pixel circuit 20 and the light-emitting device 30 are coupled, and the first repair line 621 and the signal line 10 overlapping with it are not coupled, nor are the second repair line 631 and the light-emitting device 30 overlapping with it. That is to say, in Figure 2 In the embodiment, each first pixel circuit 20 can work normally and drive the corresponding light-emitting device 02 to emit light. There are no defective pixels in the display panel, and the pixel repair structure 60 is not activated.

[0078] Based on the same inventive concept, embodiments of the present invention provide a method for repairing a display panel, used to repair defective pixels in the display panel. Figure 5 A flowchart of the repair method provided in the embodiments of the present invention is shown below. Figure 5 As shown, the repair methods for the display panel include:

[0079] Step S101: Perform defect detection on the display panel to determine whether there are defective pixels in the display panel. For example, a lighting test can be performed on the display panel. If a pixel at a certain location cannot be lit, it is determined that the pixel has a display defect.

[0080] Step S102: Determine the location of the defective pixel based on the defect detection results. The first pixel circuit 20 in the defective pixel is the defective pixel circuit. For example, based on the defect detection results, it can be analyzed which row and column of the pixel in the panel has a display defect. After the display panel is manufactured, each light-emitting device 30 in the pixel sp is coupled to the corresponding first pixel circuit 20. Therefore, the location of the defective first pixel circuit 20 can also be determined based on the location of the defective pixel.

[0081] Step S103: Configure the display panel according to the position of the defective pixel, including: the signal line 10 electrically connected to the defective pixel circuit is a repair signal line, and the mutually coupled repair signal line and the first compensation structure 64 are disconnected; configure the first repair line 621 to be coupled with the repair signal line; configure the second repair line 631 to be coupled with the light-emitting device 30 in the defective pixel.

[0082] In some embodiments, after the display panel is manufactured, the first compensation structure 64 and the signal line 10 are coupled one-to-one. When configuring the display panel according to step S103, a laser welding process can be used to disconnect the mutually coupled repair signal lines from the first compensation structure 64. Laser welding is used to couple the first repair line 621 to the repair signal lines overlapping with it, and simultaneously, laser welding is used to couple the second repair line 631 to the light-emitting device 30 overlapping with it, thereby realizing signal transmission between the repair circuit and the light-emitting device of the defective pixel.

[0083] The repair method provided by the embodiments of the present invention can repair defective pixels in the display panel. When the size of the capacitor compensated by the first compensation structure 64 is basically the same as the size of the parasitic capacitance introduced after the signal line 10 is coupled to the pixel repair structure 60, the parasitic capacitance on the repair signal line can be basically the same as the parasitic capacitance on the conventional signal line (i.e., the non-repair signal line), so that the delay of each signal line in the display panel is basically the same, thereby improving the display effect of the repaired display panel.

[0084] Figure 6 This is a schematic diagram of another display panel provided in an embodiment of the present invention. It can be combined with... Figure 6 The illustrated structure of the embodiments is used to understand the repair method provided by the embodiments of the present invention.

[0085] like Figure 6 As shown, there is a defective pixel in the display panel, namely pixel sp(2,3) located in the second row and third column. The first pixel circuit 20 in pixel sp(2,3) in the second row and third column is coupled to signal line 10(3). Among them, the signal line 10(3) corresponding to the defective pixel sp(2,3) is the repair signal line, and all signal lines 10 in the display panel except for signal line 10(3) are non-repair signal lines. The signal line 10(3) and its corresponding first compensation structure 64 are not coupled, while the signal lines 10 other than signal line 10(3) are coupled to their respective corresponding first compensation structures 64. This is equivalent to setting the repair signal line and its corresponding first compensation structure 64 to be uncoupled, and the non-repair signal line and its corresponding first compensation structure 64 to be coupled. The first repair line 621 is coupled to the signal line 10(3), and the second repair line 631 is coupled to the light-emitting device 30 in pixel sp(2,3), that is, the first repair line 621 is coupled to the repair signal line; the second repair line 631 is coupled to a light-emitting device 30, and the first pixel circuit 20 in the pixel sp to which the light-emitting device 30 coupled to the second repair line 631 is located is coupled to the repair signal line.

[0086] Figure 6In this embodiment, the first pixel circuit 20 in pixel sp(2,3) cannot drive the light-emitting device 30 to emit light, so pixel repair structure 60 is needed to repair pixel sp(2,3). The signal line 10(3) and its corresponding first compensation structure 64 are set to be uncoupled, that is, the two are disconnected, in other words, they are insulated from each other; the first repair component 62 is set to be coupled to the signal line 10(3), and the first input terminal of the second pixel circuit 61 is coupled to the signal line 10(3) through the first repair line 621, at which time the signal of the signal line 10(3) can be transmitted to the first repair line 621; and the second repair component 63 is coupled to the light-emitting device 30 in pixel sp(2,3), and the output terminal of the second pixel circuit 61 is coupled to the light-emitting device 30 in pixel sp(2,3) through the second repair line 631. Taking signal line 10(3) as a data line as an example, when driving the display panel to display, the data signal on signal line 10(3) is provided to the second pixel circuit 61 through the first repair component 62, which can drive the second pixel circuit 61 to work. The driving current generated by the second pixel circuit 61 is provided to the light-emitting device 30 in pixel sp(2,3) through the second repair component 63 to light up the light-emitting device 30, thereby repairing pixel sp(2,3). This embodiment enables the pixel repair structure 60 to repair defective pixel sp. In this embodiment, signal line 10(3) coupled to the defective pixel can be understood as the repair signal line, and other signal lines 10 can be understood as non-repair signal lines.

[0087] Figure 6In this embodiment, the repair signal line and its corresponding first compensation structure 64 are not coupled, while the non-repair signal line and its corresponding first compensation structure 64 are coupled, thus avoiding the first compensation structure 64 affecting the load of the repair signal line. The first repair component 62 is used to couple the first input terminal of the second pixel circuit 61 to the repair signal line, and the second repair component 63 is used to couple the output terminal of the second pixel circuit 61 to the light-emitting device 30 in the defective pixel sp. This allows the second pixel circuit 61 to drive the light-emitting device 30 in the defective pixel to emit light, thereby repairing the defective pixel sp using the pixel repair structure 60. After the repair signal line is coupled to the first repair component 62, parasitic capacitance is added to the repair signal line. By setting the repair signal line and its corresponding first compensation structure 64 to be uncoupled, and the non-repair signal line and its corresponding first compensation structure 64 to be coupled, when the capacitance of the first compensation structure 64 and the capacitance added to the repair signal line after being coupled to the first repair component 62 are basically the same, the load of the non-repair signal line coupled to the first compensation structure 64 and the load of the repair signal line not connected to the first compensation structure 64 tend to be consistent after the defective pixel is repaired. The parasitic capacitance on each signal line 10 in the display panel is still basically the same, so the delay on each signal line is basically the same, ensuring the uniformity of the display panel after repair.

[0088] In some embodiments, the first repair element 62 and the signal line 10 may be located in different layers. Figure 7 for Figure 2 Enlarged view of the central region Q1 location. Figure 8 for Figure 7 A schematic diagram of the cross-section at the location of the midtangent AA′. (Combined with...) Figure 7 and Figure 8 As can be seen, the first repair line 621 and the signal line 10 are located in different layers; in the plane direction e perpendicular to the substrate 70, the first repair line 621 and at least one signal line 10 partially overlap. Figure 8 The diagram shows the intersection position Q2 of the first repair line 621 and the signal line 10 that intersects with it. Figure 8 The diagram only shows the first repair line 621 located on the side of the signal line 10 away from the substrate 70. In other embodiments, the first repair line 621 is located on the side of the signal line 10 closer to the substrate 70.

[0089] After the display panel is manufactured, the first repair line 621 and the signal line 10 overlapping with it are not coupled. When the display panel is inspected for defects and no defective pixels are found, no repair processing is performed on the display panel. In some embodiments, the first repair line 621 and the signal line 10 overlapping with it are not coupled.

[0090] In other embodiments, the first repair line 621 is coupled to a signal line 10. When the location of the defective pixel is determined by defect detection on the display panel, the coupling of the first repair line 621 and the repair signal line can be configured by using a laser welding process to heat the overlapping position Q2 of the first repair line 621 and the signal line 10, thereby coupling the first repair line 621 and the signal line 10 and realizing signal transmission between the first repair line 621 and the signal line 10.

[0091] By positioning the first repair line 621 and the signal line 10 on different layers, and ensuring that the extension directions of the first repair line 621 and the signal line 10 intersect, it is easier to route the first repair line 621 and facilitate the overlap of the first repair line 621 with multiple signal lines 10. When configuring the display panel according to the defect detection structure, only the overlapping area of ​​the first repair line 621 and the signal line 10 needs to be heated using a laser welding process to achieve coupling between the first repair line 621 and the repair signal line. This reduces the number of laser welding points and simplifies the process.

[0092] In some embodiments, Figure 9 This is another schematic diagram of a display panel provided in an embodiment of the present invention, such as... Figure 9 As shown, the first repair component 62 also includes a first transistor 622, and the first repair line 621 and the signal line 10 are coupled through the first transistor 622. That is, the first electrode of the first transistor 622 is connected to the first repair line 621, and the second electrode is connected to the signal line 10. The pixel repair structure 60 also includes a control line 65, with one control line 65 provided for each first transistor 622, and the control electrode of the first transistor 622 is coupled to the control line 65. The operating state of the first transistor 622 is controlled through the control line 65. Figure 9 The first transistor 622 is illustrated as an n-type transistor; in some embodiments, the first transistor 622 is a p-type transistor. It should be noted that, in an optional embodiment, the second terminal of the first transistor 622 is typically connected via a via (…). Figure 9 (Not shown in the image) Coupling with signal line 10 is achieved, that is, at the via, along the direction e perpendicular to the plane of substrate 70, the first transistor 622 at least partially overlaps with signal line 10. The shape of signal line 10 is not specifically limited in this application.

[0093] After defect detection is performed on the display panel and it is determined that there are no defective pixels in the display panel, the signals transmitted on each control line 65 are configured according to the defect detection results, so that the control line 65 controls all the first transistors 622 to be in the off state.

[0094] After defect detection of the display panel, the display panel is configured according to the location of the defective pixels, including configuring the signals transmitted on each control line 65 according to the location of the defective pixels. Specifically, the first transistor 622 coupled to the control and repair signal line is turned on, while the remaining first transistors 622 are turned off, so that the path between the repair signal line and the first repair line 621 is open.

[0095] Figure 10 This is a schematic diagram of another display panel provided in an embodiment of the present invention. Figure 10 The diagram illustrates an overlap between the first repair component 62 and the signal line 10, such as... Figure 10 As shown, the first repair component 62 includes a first transistor 622, which includes a gate g and an active layer AL. The active layer AL includes a channel w, a first contact region z1, and a second contact region z2. The channel w and the gate g overlap in a direction perpendicular to the plane of the substrate 70. The first contact region z1 and the second contact region z2 are located on opposite sides of the channel w. One of the first contact region z1 and the second contact region z2 is a source contact region, and the other is a drain contact region. Since the signal line 10 is connected to the first contact region z1 through a via on the insulating layer, it can be considered that the signal line 10 and the first contact region z1 overlap in the direction e perpendicular to the plane of the substrate 70, that is, the signal line 10 and the first transistor 622 partially overlap.

[0096] In other embodiments, the first repair line 621 and the signal line 10 are located on the same layer. Figure 11 This is a schematic diagram of another display panel provided in an embodiment of the present invention. Figure 12 This is a partial cross-sectional schematic diagram of another display panel provided in an embodiment of the present invention. Figure 13 for Figure 12 A schematic diagram of a cross-section at the location of the tangent line BB′. (See diagram below.) Figure 11 As shown, the first repair component 62 also includes a first repair gasket 623. Combined with... Figure 12 and Figure 13 In the direction e perpendicular to the plane of the substrate 70, one end of the first repair pad 623 overlaps with the first repair line 621, and the other end of the first repair pad 623 overlaps with the signal line 10. The first repair pad 623 and the first repair line 621 are located in different layers, while the first repair line 621 and the signal line 10 are located in the same layer. Figure 13The diagram only illustrates the first repair pad 623 located on the side of the first repair line 621 and signal line 10 closest to the substrate 70. In some embodiments, the first repair pad 623 is located on the side of the first repair line 621 and signal line 10 furthest from the substrate 70. In optional embodiments, the first compensation structure 64 may be located on the same side of pixel sp as the first repair line 621, or the first compensation structure 64 may be located on a different side of the pixel from the first repair line 621.

[0097] In some embodiments, the first repair line 621 and the signal line 10 overlapping with it are not coupled. After the display panel is manufactured, one end of the first repair pad 623 overlaps with the first repair line 621, and the other end of the first repair pad 623 overlaps with the signal line 10. When the display panel is inspected for defects and it is determined that there are no defective pixels in the display panel, no repair processing is performed on the display panel. The first repair pad 623 is not coupled to the first repair line 621, nor is it coupled to the signal line 10, ensuring that the first repair line 621 and the signal line 10 overlapping with it are not coupled.

[0098] In some embodiments, the first repair line 621 is coupled to a signal line 10. When the location of the defective pixel is determined by defect detection on the display panel, one end of the first repair pad 623 is coupled to the first repair line 621, and the other end of the first repair pad 623 is coupled to the signal line 10. Laser welding process can be used to heat the overlapping position Q4 of the first repair pad 623 and the first repair line 621, and the overlapping position Q5 of the first repair pad 623 and the signal line 10, so that the first repair line 621 and the signal line 10 are coupled.

[0099] In some implementations... Figure 14 This is a partial schematic diagram of another display panel provided in an embodiment of the present invention. Figure 15 for Figure 14 A schematic diagram of the pixel circuit in the embodiment. Figure 16 for Figure 14 A schematic diagram of a cross-section at the location of the tangent CC′. (See diagram below.) Figure 14 The diagram illustrates each transistor in the first pixel circuit 20 and the first electrode 31 in the light-emitting device 30. For details on each transistor in the first pixel circuit 20, please refer to... Figure 15 To understand.

[0100] like Figure 15 As shown, the gate of gate reset transistor T3 and the gate of electrode reset transistor T4 are coupled to the second scan signal C2, the gate of data write transistor T1 and the gate of threshold compensation transistor T2 are coupled to the first scan signal C1, and the gate of the first light-emitting control transistor T5 and the gate of the second light-emitting control transistor T6 are coupled to the light-emitting control signal E. Figure 15 The diagram illustrates the pixel circuits in row n and row (n+1), where n is a positive integer. Taking the pixel circuit in row (n+1) as an example: In the pixel circuit of row (n+1), the gate of gate reset transistor T3 and the gate of electrode reset transistor T4 are coupled to the same control terminal. The first electrode of electrode reset transistor T4 is coupled to the reset signal Ref, and the first electrode of gate reset transistor T3 is coupled to the second electrode of electrode reset transistor T4. The second electrode of gate reset transistor T3 is coupled to node N1. Furthermore, the second electrode of electrode reset transistor T4 in the pixel circuit of row (n+1) is also coupled to node N4 of the pixel circuit in row n. When gate reset transistor T3 and electrode reset transistor T4 are turned on in the pixel circuit of row (n+1), they provide the reset signal Ref to node N1 to reset the gate of driving transistor Tm; simultaneously, when electrode reset transistor T4 is turned on, it also provides the reset signal Ref to node N4 of the pixel circuit in row n to reset node N4. In the display panel, shift registers are used to provide scan signals to the pixel circuits. These shift registers are cascaded, with the input of the nth-stage shift register connected to the output of the (n-1)th-stage shift register, and the output of the nth-stage shift register connected to the input of the (n+1)th-stage shift register. Specifically, for the nth row of pixel circuits, the output of the (n-1)th-stage shift register provides a second scan signal C2(n) to the nth row of pixel circuits, and the output of the nth-stage shift register provides a first scan signal C1(n) to the nth row of pixel circuits. For the (n+1)th-row of pixel circuits, the output of the nth-stage shift register provides a second scan signal C2(n+1) to the n+1th-row of pixel circuits, and the output of the (n+1)th-stage shift register provides a first scan signal C1(n+1) to the n+1th-row of pixel circuits. In other words, the first scan signal C1(n) received by the nth-row pixel circuit and the second scan signal C2(n+1) received by the n+1th-row pixel circuit are the same signal. Similarly, the second scan signal C2(n) received by the nth row pixel circuit and the first scan signal C1(n-1) received by the (n-1)th row pixel circuit are the same signal.

[0101] It should be noted that, Figure 3 and Figure 15 The illustrated pixel circuit structure is for illustrative purposes only and is not intended to limit the scope of the invention. The first pixel circuit 20 and the second pixel circuit 61 in the embodiments of the present invention can be any pixel circuit in the prior art.

[0102] In this embodiment of the invention, the second repair component 63 includes a second repair line 631 and a second repair pad 632. Figure 16The light-emitting device 30 further includes a first electrode 31, a light-emitting layer 32, and a second electrode 33 stacked together, with the second electrode 33 located on the side of the first electrode 31 away from the substrate 70. The second repair pad 632 and the second repair line 631 are located in different layers. In the direction e perpendicular to the plane of the substrate 70, one end of the second repair pad 632 overlaps with the first electrode 31, and the other end of the second repair pad 632 overlaps with the second repair line 631.

[0103] like Figure 16 As shown, the first electrode 31 and the output terminal out of the first pixel circuit are located on different layers. The first electrode 31 is connected to the output terminal out of the first pixel circuit via a connecting electrode 80. In some embodiments, the connecting electrode 80 is reused as a second repair pad 632. During fabrication, only the opening shape of the mask used to fabricate the connecting electrode 80 needs to be designed, without the need for additional process steps.

[0104] In some embodiments, the second repair line 631 and the light-emitting device 30 are not coupled. After the display panel is manufactured, one end of the second repair pad 632 overlaps with the first electrode 31 and is coupled through a via on the insulating layer, while the other end of the second repair pad 632 overlaps with the second repair line 631. When the display panel is inspected for defects and it is determined that there are no defective pixels in the display panel, no repair processing is performed on the display panel. The other end of the second repair pad 632 overlaps with the second repair line 631 and is not coupled, to ensure that the second repair line 631 and the light-emitting device 30 are not coupled.

[0105] In other embodiments, the second repair line 631 is coupled to a light-emitting device 30. When the location of the defective pixel is determined by defect detection of the display panel, a laser welding process is used to heat the overlapping position Q of the second repair pad 632 and the second repair line 631 to achieve the coupling of the second repair pad 632 and the second repair line 631, so that the second repair line 631 is coupled to the light-emitting device 30.

[0106] Figure 16 The diagram also illustrates a semiconductor layer 71, a first metal layer 72, and a second metal layer 73 on one side of the substrate 70. The output terminal 'out' of the first pixel circuit is located on the semiconductor layer 71, and the active layers of each transistor in the first pixel circuit are also located on the semiconductor layer 71. Figure 16The diagram also illustrates a scan line S1, to which the gate of the gate reset transistor T3 is coupled. Scan line S1 is located on the first metal layer 72. Connecting electrode 80 is located on the second metal layer 73, and the second repair line 631 is located on the first metal layer 72. The display panel also includes at least a third metal layer, located between the first metal layer 72 and the second metal layer 73. One plate of the storage capacitor Cst is located on the first metal layer 72, and the other plate is located on the third metal layer.

[0107] In some embodiments, Figure 17 This is a partial cross-sectional schematic diagram of another display panel provided in an embodiment of the present invention, as shown below. Figure 17 As shown, signal line 10 corresponds to first compensation structure 64, wherein first compensation structure 64 includes first compensation capacitor 641, and first compensation capacitor 641 includes a first electrode plate 641a and a second electrode plate 641b that overlap each other in a direction perpendicular to the plane of the substrate 70. The first electrode plate 641a is located on the same layer as signal line 10 and is coupled to it. Figure 17 The illustration only shows the second electrode 641b located on the side of the first electrode 641a closer to the substrate 70. In some embodiments, the second electrode 641b is located on the side of the first electrode 641a furthest from the substrate 70. During fabrication, only the opening shape of the mask used to fabricate the signal line 10 needs to be designed; that is, the signal line 10 and the first electrode 641a of the first compensation capacitor 641 can be fabricated in one process. Simultaneously, the second electrode 641b can be fabricated in a film layer within the display panel without adding any additional fabrication process. Specifically, the overlapping area of ​​the second electrode 641b and the first electrode 641a is designed according to the capacitance value that the first compensation capacitor 641 needs to compensate.

[0108] In some embodiments, the first plate 641a of the first compensation capacitor 641 is coupled to the signal line 10, and the second plate 641b is coupled to the first constant voltage signal line, which transmits a constant voltage signal. For example... Figure 14 As shown, the display panel includes a first power signal line PV1, which provides a first power signal, which is a constant voltage signal. The first terminal of the first light-emitting control transistor T5 and one plate of the storage capacitor Cst are coupled to the first power signal line PV1. In some embodiments, the first constant voltage signal line includes the first power signal line PV1.

[0109] Taking signal line 10 as a data line as an example, the first terminal of the data writing transistor T1 is coupled to signal line 10. Figure 14 Signal line 10 is illustrated in the diagram. In some embodiments, the first power signal line PV1 and signal line 10 are located on the same layer. Figure 18This is a partial schematic diagram of another display panel provided in an embodiment of the present invention. Figure 19 for Figure 18 A schematic diagram of a cross-section at the location of the tangent line DD′.

[0110] Combination Figure 18 and Figure 19 As can be seen, the first plate 641a and the second plate 641b of the first compensation capacitor 641 overlap. The first plate 641a of the first compensation capacitor 641 is coupled to the signal line 10, and the second plate 641b of the first compensation capacitor 641 is coupled to the first power signal line PV1. This arrangement allows the first plate 641a and the second plate 641b of the first compensation capacitor 641 to be connected to a certain voltage potential, thereby giving the first compensation capacitor 641 a certain capacitance value to perform capacitance compensation for the signal line 10.

[0111] In some embodiments, after defect detection, it is determined that the display panel has no defective pixels. The first plate 641a of the first compensation capacitor 641 is coupled to the signal line 10, and the second plate 641b is coupled to the first power signal line PV1. The pixel repair structure 60 in the display panel is not activated. Therefore, the parasitic capacitance on each signal line 10 in the display panel is essentially the same.

[0112] The display panel also includes a second power signal line, the second electrode 33 of the light-emitting device 30 is coupled to the second power signal line, and the second power signal line provides a constant voltage signal. In some embodiments, the first constant voltage signal line includes the second power signal line, the first electrode 641a of the first compensation capacitor 641 is coupled to the signal line 10, and the second electrode 641b is coupled to the second power signal line, which will not be illustrated in the accompanying drawings.

[0113] In other embodiments, if defective pixels are found in the display panel after defect detection, the first compensation capacitor 641 corresponding to the repair signal line in the display panel needs to be configured. For example, the first plate 641a or the second plate 641b of the first compensation capacitor 641 can be configured to float, which is equivalent to cutting off the coupling between the repair signal line and the first compensation capacitor 641.

[0114] In one embodiment, taking the first constant voltage signal line including the first power supply signal line PV1 as an example, Figure 20 A partial schematic diagram of another display panel provided in an embodiment of the present invention, as shown below. Figure 20The diagram illustrates three first compensation capacitors 641 and their corresponding signal lines 10. The first plate 641a of the third first compensation capacitor 641 (from left to right) is not coupled to the signal line 10; that is, the first plate 641a is floating. The second plate 641b of the third first compensation capacitor 641 (from left to right) is coupled to the first power signal line PV1. The first plates 641a of the first and second first compensation capacitors 641 (from left to right) are coupled to the signal line 10, and the second plates 641b are coupled to the first power signal line PV1. The signal line 10 corresponding to the third first compensation capacitor 641 is a repair signal line. After the display panel is manufactured, the first plates 641a are coupled to the signal lines 10. After defect detection determines that there are defective pixels in the display panel, the display panel is repaired. The signal lines 10 corresponding to the defective pixels are decoupled from the first compensation capacitors 641. Laser fusing technology can be used to sever the coupling between the first plates 641a and the signal lines 10, forming... Figure 18 The structure shown.

[0115] In another embodiment, taking the first constant voltage signal line including the first power supply signal line PV1 as an example, Figure 21 A partial schematic diagram of another display panel provided in an embodiment of the present invention, as shown below. Figure 21 The diagram illustrates three first compensation capacitors 641 and their corresponding signal lines 10. The first plate 641a of each first compensation capacitor 641 is coupled to its corresponding signal line 10. The second plates 641b of the first and second first compensation capacitors 641 (from left to right) are coupled to the first power signal line PV1. The second plate 641b of the third first compensation capacitor 641 (from left to right) is not coupled to the first power signal line PV1; that is, the second plate 641b of the third first compensation capacitor 641 is floating. In this embodiment, the third first compensation capacitor 641 and its corresponding signal line 10 can be considered uncoupled. The signal line 10 corresponding to the third first compensation capacitor 641 is a repair signal line. After defect detection determines that there are defective pixels in the display panel, the display panel is repaired. The signal line 10 corresponding to the defective pixel is configured to be uncoupled from the first compensation capacitor 641. A laser melting process is used to cut the coupling between the second plate 641b and the first power signal line PV1, forming... Figure 19 The structure shown.

[0116] In some embodiments, Figure 22 A partial schematic diagram of another display panel provided in an embodiment of the present invention, as shown below. Figure 22As shown, the first compensation capacitor 641 includes a first electrode 641a, a second electrode 641b, and a third electrode 641c; the first electrode 641a is located between the second electrode 641b and the third electrode 641c, and the second electrode 641b and the third electrode 641c are coupled. This arrangement can increase the capacitance value of the first compensation capacitor 641 and reduce the area occupied by the first compensation capacitor 641. Given the limited space available for compensation capacitors in the display panel, it ensures that the first compensation capacitors 641 corresponding to different signal lines 10 are mutually insulated.

[0117] In some embodiments, Figure 23 This is a schematic diagram of another display panel provided in an embodiment of the present invention, as shown below. Figure 23 As shown, the display panel includes a dummy pixel circuit 020. The structure of the dummy pixel circuit 020 is the same as that of the first pixel circuit 20, and both are fabricated using the same process. The dummy pixel circuit 020 is located around the arrayed first pixel circuit 20. The dummy pixel circuit 020 ensures that uneven etching caused by abrupt changes in the etching process occurs on the dummy pixel circuit 020, thus guaranteeing the stable performance of the fabricated first pixel circuit 20. The dummy pixel circuit 020 is not used for light emission. The structure of the light-emitting device corresponding to the dummy pixel circuit 020 is incomplete; for example, the light-emitting device corresponding to the dummy pixel circuit 020 may lack an electrode layer or a light-emitting layer; or the dummy pixel circuit 020 may not be coupled to the light-emitting device. Figure 23 The dummy pixel circuit 020 is only shown in the block diagram. In this embodiment, the first compensation structure 64 also includes a first compensation capacitor 641 and at least one dummy pixel circuit 020, with the dummy pixel circuit 020 located on the side of the first compensation capacitor 641 closer to the first pixel circuit 20.

[0118] like Figure 2 As shown, multiple first pixel circuits 20 are arranged in a pixel circuit row 20H in the second direction b, and one second repair element 63 corresponds to at least two light-emitting devices 30. That is, in the direction perpendicular to the plane of the substrate 70, one second repair element 63 overlaps with at least two light-emitting devices 30. Specifically, refer to the above. Figure 14 The diagram illustrates the overlapping arrangement of the second repair pad 632 and the first electrode 31 to achieve the overlapping of the second repair component 63 and the light-emitting device 30. In this embodiment of the invention, the first pixel circuit 20 corresponding to the light-emitting device 30 overlapping with the same second repair component 63 belongs to the same pixel circuit row 20H, enabling the repair of one of multiple pixels sp using one second repair component 63 and the second pixel circuit 61 coupled thereto.

[0119] In some implementations, the light-emitting devices 30 in the pixel sp of the first pixel circuit 20 belonging to the same pixel circuit row 20H all overlap with the same second repair element 63.

[0120] In some implementations, the output of a second pixel circuit 61 is coupled to at least two second repair lines 631. Figure 24 This is another schematic diagram of a display panel provided in an embodiment of the present invention, such as... Figure 24 As shown, the output terminal of the second pixel circuit 61 is coupled to two second repair lines 631. Each second repair element 63 includes one second repair line 631, and each second repair element 63 overlaps with multiple light-emitting devices 30 corresponding to one pixel circuit row 20H. In this embodiment, one second pixel circuit 61 can repair one of the multiple pixels sp corresponding to two pixel circuit rows 20H, reducing the number of second pixel circuits 61 and thus reducing the space occupied by each second pixel circuit 61. Placing the second pixel circuit 61 in a non-display area helps to reduce the bezel of the display panel.

[0121] When defective pixels exist in the display panel, a first repair line 621 is configured to be coupled to the repair signal line but not to the non-repair signal line. Simultaneously, a second repair line 631 is configured to be coupled to the light-emitting device 30 in the defective pixel. The repair signal line and its corresponding first compensation structure 64 are not coupled. This allows the second pixel circuit 61 to drive the light-emitting device 30 in the defective pixel, ensuring that the parasitic capacitance on each signal line 10 is approximately the same, and that the voltage drop on each signal line is approximately the same, thereby ensuring display uniformity. Figure 2 As shown, a first repair line 621 connects to the first input terminals of at least two second pixel circuits 61. This configuration reduces the number of first repair lines 621, thereby saving wiring space in the display panel.

[0122] like Figure 2 As shown, multiple second pixel circuits 61 are arranged in a repair circuit column 61L in the first direction a, and the repair circuit column 61L is connected to the same first repair line 621. For each repair circuit column 61L, only one first repair line 621 needs to be set, which reduces the number of first repair lines 621 and saves wiring space in the display panel. The number of second pixel circuits 61 in the repair circuit column 61L is the same as the number of pixel circuit rows 20H in the display panel. One second pixel circuit 61 corresponds to one pixel circuit row 20H. When any first pixel circuit 20 in any pixel circuit row 20H has a defect, the corresponding second pixel circuit 61 can be used to replace the first pixel circuit 20 to drive the corresponding light-emitting device 30 to emit light.

[0123] In some embodiments, Figure 25 This is another schematic diagram of a display panel provided in an embodiment of the present invention, such as... Figure 25 As shown, a first repair line 621 connects to a second pixel circuit 61. In the pixel repair structure 60, a first repair line 621, a second pixel circuit 61, and a second repair line 631 coupled to the output of the second pixel circuit 61 belong to a repair group. A repair group repairs a defective pixel in the display panel. When the pixel repair structure 60 includes multiple repair groups, it is possible to repair multiple defective pixels simultaneously. Figure 25 Each of the first repair lines 621 shown in the diagram is not coupled to the signal line 10, and the second repair line 631 is not coupled to the light-emitting device 30, so there are no defective pixels in the display panel.

[0124] Figure 26 This is another schematic diagram of a display panel provided in an embodiment of the present invention, such as... Figure 26 As shown, the first pixel circuit 20(1,2) in the first row and second column of the display panel has a defect, and the first pixel circuit 20(2,3) in the second row and third column has a defect. Specifically, the signal line 10 corresponding to the first pixel circuit 20(1,2) is not coupled to the first compensation structure 64. The first repair line 621, which is coupled to the first second pixel circuit 61-1, is coupled to the signal line 10 corresponding to the first pixel circuit 20(1,2). Furthermore, the second repair line 631, which is coupled to the first second pixel circuit 61-1, is coupled to the light-emitting device 30 in the pixel sp to which the first pixel circuit 20(1,2) belongs. The signal line 10 corresponding to the first pixel circuit 20(2,3) is not coupled to the first compensation structure 64. The first repair line 621, which is coupled to the second pixel circuit 61-2, is coupled to the signal line 10 corresponding to the first pixel circuit 20(2,3). The second repair line 631, which is coupled to the second pixel circuit 61-2, is coupled to the light-emitting device 30 in the pixel sp to which the first pixel circuit 20(2,3) belongs. This embodiment can repair two defective pixels simultaneously.

[0125] In some embodiments, Figure 27 This is another schematic diagram of a display panel provided in an embodiment of the present invention, such as... Figure 27As shown, signal line 10 includes a first signal line 10-1 and a second signal line 10-2. The number of first pixel circuits 20 coupled to the first signal line 10-1 is n1, and the number of first pixel circuits 20 coupled to the second signal line 10-2 is n2, where n1 is greater than n2. The display panel also includes a second compensation structure 82, and the second signal line 10-2 is electrically connected to the second compensation structure 82. This embodiment of the invention can be applied to irregularly shaped display panels, such as circular display panels or display panels with notches in the display area. In irregularly shaped display panels, the number of first pixel circuits 20 coupled to the first signal line 10-1 and the second signal line 10-2 are different, resulting in different loads generated by the first pixel circuits 20 on the first signal line 10-1 and the second signal line 10-2. In this embodiment of the invention, the second compensation structure 82 is used to compensate for the load on the second signal line 10-2, thereby reducing the load difference between the first signal line 10-1 and the second signal line 10-2. Meanwhile, the first signal line 10-1 and the second signal line 10-2 are respectively provided with a first compensation structure 64. When the first pixel circuit 20 corresponding to the first signal line 10-1 or the second signal line 10-2 has a defect, the pixel repair structure 60 can be used to repair the light-emitting device 30 corresponding to the defective first pixel circuit 20. Moreover, after repair, it can ensure that the parasitic capacitance on each signal line 10 is basically the same, thereby improving the display effect after repair.

[0126] In some embodiments, the second compensation structure 82 includes a compensation capacitor. The second compensation structure 82 may be a capacitor consisting of two opposing plates. When the capacitance value to be compensated is large, the second compensation structure 82 may be configured as a capacitor consisting of three overlapping plates on a plane perpendicular to the substrate 70.

[0127] In some embodiments, Figure 28 This is another schematic diagram of a display panel provided in an embodiment of the present invention, such as... Figure 28As shown, signal line 10 includes a first signal line 10-1 and a second signal line 10-2. The number of first pixel circuits 20 coupled to the first signal line 10-1 is greater than the number of first pixel circuits 20 coupled to the second signal line 10-2. The display panel also includes a third signal line 10-3, and the number of first pixel circuits 20 coupled to the third signal line 10-3 is greater than the number of first pixel circuits 20 coupled to the first signal line 10-1. The display panel includes a second compensation structure 82 and a third compensation structure 83. The second signal line 10-2 is electrically connected to the second compensation structure 82, and the first signal line 10-1 is electrically connected to the third compensation structure 83. The capacitance value that the third compensation structure 83 can compensate for is less than the capacitance value that the second compensation structure 82 can compensate for. The number of first pixel circuits 20 coupled to the first signal line 10-1 and the second signal line 10-2 is less than the number of first pixel circuits 20 coupled to the third signal line 10-3. Therefore, the loads generated by the first pixel circuits 20 on the first signal line 10-1, the second signal line 10-2, and the third signal line 10-3 are different. In this embodiment of the invention, a second compensation structure 82 is used to compensate for the load on the second signal line 10-2, and a third compensation structure 83 is used to compensate for the load on the first signal line 10-1. The capacitance value that the compensation structure can compensate for is designed according to the difference in the number of first pixel circuits 20 coupled to the signal lines, so as to reduce the load difference on the first signal line 10-1 and the third signal line 10-3, and also to reduce the load difference on the second signal line 10-2 and the third signal line 10-3. Meanwhile, the first signal line 10-1, the second signal line 10-2, and the third signal line 10-3 are respectively provided with a first compensation structure 64. When the first pixel circuit 20 corresponding to the first signal line 10-1, the second signal line 10-2, or the third signal line 10-3 has a defect, the pixel repair structure 60 can be used to repair the light-emitting device 30 corresponding to the defective first pixel circuit 20. Moreover, after repair, it can be ensured that the parasitic capacitance on each signal line 10 is basically the same, thereby improving the display effect after repair.

[0128] In some embodiments, such as Figure 2 As shown, the display panel includes a display area AA and a non-display area BA; the light-emitting device 30 and the first pixel circuit 20 are located in the display area AA, and the second pixel circuit 61 is located in the non-display area BA; multiple second pixel circuits 61 are arranged in a repair circuit row 61L in the first direction a. In this embodiment, the second pixel circuit 61 is placed in the non-display area BA and does not occupy the control in the display area AA, thereby not affecting the arrangement of the first pixel circuit 20 in the display area AA. Moreover, placing the second pixel circuit 61 in the non-display area BA allows one second pixel circuit 61 to correspond to one or more pixel circuit rows 20H, so that one second pixel circuit 61 can repair one of multiple pixels sp.

[0129] In some embodiments, the first compensation structure 64 is located in the non-display area BA, so as not to affect the arrangement of the first pixel circuit 20 in the display area AA.

[0130] In some embodiments, Figure 29 This is another schematic diagram of a display panel provided in an embodiment of the present invention, such as... Figure 29 As shown, the display panel also includes a protection structure 90; the input terminal of the protection structure 90 is connected to the second constant voltage signal line ( Figure 29 (Not shown in the image), the second constant voltage signal line transmits the second constant voltage signal; in the direction perpendicular to the plane where the substrate 70 is located, the signal output ends of the second repair line 631 and the protective structure 90 overlap.

[0131] In this embodiment of the invention, the second repair component 63 overlaps with at least one light-emitting device 30 in a plane perpendicular to the substrate 70. Therefore, the second repair component 63 needs to be positioned within the display area AA, meaning the second repair line 631 in the second repair component 63 is located within the display area AA. Since signal traces such as scan lines and light-emitting control lines are also provided within the display area AA, signal jumps will occur on the scan lines and light-emitting control lines when driving the display panel. The voltage on the second repair line 631 will be affected by these signal jumps on the surrounding signal traces, causing the potential on the second repair line 631 to be coupled and raised. Furthermore, since the second repair line 631 is relatively close to the light-emitting device 30, the increased potential on the second repair line 631 will affect the potential of the first electrode 31 of the light-emitting device 30, leading to a risk of the light-emitting device 30 emitting light illegally. To address this issue, a protective structure 90 is provided in the embodiments of the present invention. In some embodiments, when the second repair component 63 and the light-emitting device 30 overlapping with it are not coupled, the signal output terminal of the protective structure 90 overlaps with and is coupled to the second repair line 631. In this way, the protective structure 90 can stabilize the potential on the second repair line 631 and prevent the potential on the second repair line 631 from being coupled up, thereby reducing the risk of the light-emitting device 30 lighting up without the light.

[0132] In other embodiments, the second repair element 63 is coupled to a light-emitting device 30 that overlaps with it, and the signal output terminal of the protective structure 90 overlaps with the second repair line 631 but is not coupled.

[0133] In some embodiments, Figure 30 This is a schematic diagram of another circuit structure in a display panel provided by an embodiment of the present invention, such as... Figure 30As shown, the display panel includes a first reset control line S0, an emissive control line Emit, a first power signal line PV1, a data line DD, a first scan line S1, and a reset signal line vref. The first pixel circuit 20 includes a first reset control terminal RD, an emissive control terminal ED, and a power signal terminal PD. The first reset control terminal RD is coupled to the first reset control line S0, the emissive control terminal ED is coupled to the emissive control line Emit, and the power signal terminal PD is coupled to the first power signal line PV1. Figure 3 For understanding purposes, in the embodiments described, the gate of gate reset transistor T3 and the gate of electrode reset transistor T4 are coupled to the first reset control terminal RD. The first electrode of gate reset transistor T3 and the first electrode of electrode reset transistor T4 are both coupled to the reset signal line vref. The gate of the first light-emitting control transistor T5 and the gate of the second light-emitting control transistor T6 are coupled to the light-emitting control terminal ED. The first electrode of the first light-emitting control transistor T5 and one plate of the storage capacitor Cst are coupled to the power signal terminal PD. The gate of data writing transistor T1 and the gate of threshold compensation transistor T2 are coupled to the first scan line S1.

[0134] The protection structure 90 includes a second transistor 91, a third transistor 92, and a first capacitor 93.

[0135] The control electrode of the second transistor 91 is coupled to the first reset control line S0, the first electrode of the second transistor 91 is coupled to the second constant voltage signal line, and the second electrode of the second transistor 91 is coupled to the first node n1; Figure 30 The diagram illustrates that the reset signal line vref in the display panel is multiplexed as the second constant voltage signal line. That is, the first electrode of the second transistor 91 is coupled to the reset signal line vref, eliminating the need for additional signal lines in the display panel. The control electrode of the third transistor 92 is coupled to the light-emitting control line Emit, and the first electrode of the third transistor 92 is coupled to the first node n1. (The diagram is incomplete and requires further context.) Figure 30 As illustrated in region Q7, the second electrode of the third transistor 92 overlaps with the second repair line 632. One plate of the first capacitor 93 is coupled to the first node n1, and the other plate is coupled to the first power signal line PV1.

[0136] In this embodiment, the first reset control line S0 and the light emission control line Emit, which drive the first pixel circuit 20, are used to control the operation of the protection structure 90. When the signal output terminal of the protection structure 90 and the second repair line 631 overlap and are coupled, the first reset control line S0 first provides an enable signal to control the second transistor 91 to conduct, writing the reset signal provided by the reset signal line vref to the first node n1; then the light emission control line Emit provides an enable signal to control the third transistor 92 to conduct, providing the voltage signal of the first node n1 to the second repair line 631, so that the second repair line 631 maintains a relatively fixed potential, preventing the potential on the second repair line 631 from being coupled up, thereby reducing the risk of the light-emitting device 30 lighting up illegally.

[0137] Figure 30 In the embodiment, the gate of the gate reset transistor T3 and the gate of the electrode reset transistor T4 are both coupled to the first reset control terminal RD. In some embodiments, the gate of the gate reset transistor T3 and the gate of the electrode reset transistor T4 are coupled to different reset control terminals, which will not be shown in the figure here.

[0138] in addition, Figure 30 In the embodiment, the first terminal of the gate reset transistor T3 and the first terminal of the electrode reset transistor T4 are both coupled to the same reset signal line vref. In some embodiments, the first terminal of the gate reset transistor T3 and the first terminal of the electrode reset transistor T4 are coupled to different reset signal lines, which will not be shown in the accompanying drawings.

[0139] Based on the same inventive concept, embodiments of the present invention also provide a display device. Figure 31 This is a schematic diagram of a display device provided in an embodiment of the present invention, such as... Figure 31 As shown, the display device includes a display panel 100 provided in any embodiment of the present invention. The structure of the display panel has been described in the above embodiments and will not be repeated here. In the embodiments of the present invention, the display device can be any device with display functionality, such as a mobile phone, tablet computer, laptop computer, e-reader, television set, smartwatch, etc.

[0140] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0141] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A display panel, characterized by, The display panel comprises: a substrate, and a plurality of pixels and a plurality of signal lines located on one side of the substrate; the pixels comprise first pixel circuits and light emitting devices; the signal lines extend along a first direction and are coupled with a plurality of the first pixel circuits; a pixel repair structure comprising a second pixel circuit, a first repair component, a second repair component and a first compensation structure; wherein the first compensation structure corresponds to the signal lines one by one; in a direction perpendicular to a plane in which the substrate is located, the first repair component and at least one of the signal lines partially overlap, and the second repair component and at least one of the light emitting devices partially overlap; the first repair component comprises a first repair line, and a first input end of the second pixel circuit is coupled with the first repair line; the second repair component comprises a second repair line, and an output end of the second pixel circuit is coupled with at least one of the second repair lines; the first repair component further comprises a first transistor and a control line, and in the direction perpendicular to the plane in which the substrate is located, the signal line and the first transistor partially overlap; the first repair line and the signal line are coupled through the first transistor; one of the control lines is arranged corresponding to each of the first transistors, and a control electrode of the first transistor is coupled with the control line.

2. The display panel of claim 1, wherein the first compensation structure comprises a first compensation capacitor.

3. The display panel of claim 2, wherein the first compensation capacitor comprises a first electrode plate and a second electrode plate; the first electrode plate of the first compensation capacitor is coupled with the signal line, and the second electrode plate is coupled with a first constant voltage signal line that transmits a constant voltage signal.

4. The display panel of claim 2, wherein the first compensation capacitor comprises a first electrode plate and a second electrode plate; in some of the first compensation capacitors, the first electrode plate is floating, and the second electrode plate is coupled with a first constant voltage signal line that transmits a first constant voltage signal.

5. The display panel of claim 2, wherein the first compensation capacitor comprises a first electrode plate and a second electrode plate; in some of the first compensation capacitors, the first electrode plate is coupled with the signal line, and the second electrode plate is floating.

6. The display panel of claim 2, wherein the first compensation capacitor comprises a first electrode plate, a second electrode plate and a third electrode plate; the first electrode plate is located between the second electrode plate and the third electrode plate, and the second electrode plate and the third electrode plate are coupled.

7. The display panel of claim 2, wherein the first compensation structure further comprises at least one dummy pixel circuit, and the dummy pixel circuit is not used for light emitting display; the dummy pixel circuit is located on a side of the first compensation capacitor close to the first pixel circuit.

8. The display panel of claim 1, wherein the first repair line and the signal line are located in different layers. The first repair line and at least one of the signal lines partially overlap in a direction perpendicular to a plane in which the substrate is located.

9. The display panel of claim 1, wherein The light emitting device comprises a first electrode, a light emitting layer and a second electrode arranged in a stack; The second repair member further comprises a second repair pad located in a different layer from the second repair line; One end of the second repair pad overlaps the first electrode, and the other end of the second repair pad overlaps the second repair line.

10. The display panel of claim 1, wherein A plurality of the first pixel circuits are arranged into a pixel circuit row in a second direction, the second direction being transverse to the first direction; In a direction perpendicular to a plane in which the substrate is located, one of the second repair members overlaps at least two of the light emitting devices, the first pixel circuits in the pixels in which the at least two of the light emitting devices are located belonging to the same pixel circuit row.

11. The display panel of claim 10, wherein The output terminal of the second pixel circuit is coupled to at least two second repair lines.

12. The display panel of claim 10, wherein The first input terminal of at least two of the second pixel circuits is connected to one of the first repair lines.

13. The display panel of claim 12, wherein A plurality of the second pixel circuits are arranged into a repair circuit column in the first direction, the repair circuit column being connected to the same one of the first repair lines.

14. The display panel of claim 10, wherein One of the second pixel circuits is connected to one of the first repair lines.

15. The display panel of claim 1, wherein The signal lines comprise first signal lines and second signal lines, the number of the first pixel circuits coupled to the first signal lines being n1, and the number of the first pixel circuits coupled to the second signal lines being n2, n1 being greater than n2; The display panel further comprises a second compensation structure, the second signal lines being electrically connected to the second compensation structure.

16. The display panel of claim 15, wherein The display panel further comprises a third compensation structure, the first signal lines being electrically connected to the third compensation structure, the third compensation structure being capable of compensating for a smaller capacitance than the second compensation structure.

17. The display panel of claim 1, wherein The signal lines that overlap the first repair members comprise repair signal lines, the signal lines other than the repair signal lines being non-repair signal lines; The repair signal lines are not coupled to the first compensation structures corresponding thereto, and the non-repair signal lines are coupled to the first compensation structures corresponding thereto; The first repair lines are coupled to the repair signal lines; The second repair lines are coupled to the light emitting devices, and the first pixel circuits in the pixels in which the light emitting devices coupled to the second repair lines are located are coupled to the repair signal lines.

18. The display panel of claim 1, wherein The signal line and the first compensation structure are coupled one by one; The first repair line and the signal line are not coupled; The second repair line and the light emitting device overlapping with the second repair line are not coupled.

19. The display panel of claim 1, wherein The display panel comprises a display area and a non-display area; the light emitting device and the first pixel circuit are located in the display area, and the second pixel circuit is located in the non-display area; A plurality of the second pixel circuits are arranged into a repair circuit column in the first direction.

20. The display panel of claim 1, wherein The display panel further comprises a protection structure; an input end of the protection structure is connected to a second constant voltage signal line, and the second constant voltage signal line transmits a second constant voltage signal; In a direction perpendicular to a plane in which the substrate is located, the second repair line and a signal output end of the protection structure overlap.

21. The display panel of claim 20, wherein The display panel comprises a first reset control line, a light emitting control line and a first power signal line, the first pixel circuit comprises a first reset control end, a light emitting control end and a power signal end, the first reset control end is coupled to the first reset control line, the light emitting control end is coupled to the light emitting control line, and the power signal end is coupled to the first power signal line; The protection structure comprises a second transistor, a third transistor and a first capacitor; A control pole of the second transistor is coupled to the first reset control line, a first pole of the second transistor is coupled to the second constant voltage signal line, and a second pole of the second transistor is coupled to a first node; A control pole of the third transistor is coupled to the light emitting control line, a first pole of the third transistor is coupled to the first node, and a second pole of the third transistor overlaps with the second repair line; One pole plate of the first capacitor is coupled to the first node, and the other pole plate is coupled to the first power signal line.

22. The display panel of claim 1, wherein, The display panel comprises a non-display area, and the first compensation structure is located in the non-display area.

23. The display panel of claim 1, wherein Arrangement directions of a plurality of the second pixel circuits are the same as extension directions of the signal line, and the signal line is a data line or a scan line.

24. A display device comprising: The display panel comprises the display panel of any one of claims 1 to 23.

25. A method of repairing a display panel, the method comprising: The repair method comprises: The display panel is subjected to defect detection. The display panel comprises a plurality of pixels, a plurality of signal lines and a pixel repair structure. The pixel comprises a first pixel circuit and a light emitting device. The signal line extends along a first direction and is coupled with a plurality of the first pixel circuit. The pixel repair structure comprises a second pixel circuit, a first repair component, a second repair component and a first compensation structure. The first compensation structure is coupled with the signal line one by one. In a direction perpendicular to a plane where a substrate is located, the first repair component and at least one of the signal lines partially overlap, and the second repair component and at least one of the light emitting devices partially overlap. The first repair component comprises a first repair line, and a first input end of the second pixel circuit is coupled with the first repair line. The first repair component further comprises a first transistor and a control line. In the direction perpendicular to the plane where the substrate is located, the signal line and the first transistor partially overlap. The first repair line and the signal line are coupled through the first transistor. One of the control lines is arranged corresponding to each of the first transistors, and a control electrode of the first transistor is coupled with the control line. The second repair component comprises a second repair line, and an output end of the second pixel circuit is coupled with at least one of the second repair lines. According to the defect detection result, the position of a defective pixel is determined. The first pixel circuit in the defective pixel is a defective pixel circuit. According to the position of the defective pixel, the display panel is configured, comprising: The signal line electrically connected with the defective pixel circuit is a repair signal line. The repair signal line and the first compensation structure coupled with each other are disconnected. The first transistor coupled with the repair signal line is controlled to be turned on, so that a path between the repair signal line and the first repair line is turned on. The second repair line is configured to be coupled with the light emitting device in the defective pixel.

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