Line defect repairing method of display panel, display panel and display device

Abstract

This invention discloses a method for repairing line defects in a display panel, a display panel, and a display device, relating to the field of display technology. The method includes: when a broken gate line exists among multiple gate lines, identifying the adjacent common electrode line corresponding to the broken gate line, and selecting signal lines on both sides of the break point of the broken gate line as bridging signal lines; fusing the broken gate line and the adjacent common electrode line with the bridging signal lines respectively to form a through-line bypassing the break point; disconnecting the bridging signal lines to avoid crosstalk to the through-line and restore normal driving of the broken gate line; and repairing the disconnected bridging signal lines to restore normal driving of the bridging signal lines. Through this method, bridging is performed using signal lines and the broken gate line with the common electrode. Disconnecting the bridging signal lines can transform a Class G line defect into a Class S line defect, thereby restoring normal display of the display panel by repairing the disconnected signal lines.

Description

Technical Field

[0001] This invention relates to the field of display technology, and in particular to a method for repairing line defects in a display panel, a display panel, and a display device. Background Technology

[0002] In the TFT-LCD (Thin Film Transistor Liquid Crystal Display) industry, the main approach to addressing S-type line defects caused by circuit opening is peripheral repair. This involves reserving spare lines on the outer perimeter of the LCD panel. When a source line (signal line) within the panel breaks, the spare line can be used to replace it, restoring the connection and enabling normal voltage conduction. This allows the signal to be driven normally, restoring the display panel to normal operation and significantly improving production yield. However, this repair method cannot be applied to G-type line defects caused by circuit opening. Once a gate line (gate line) breaks, the display panel is unlikely to return to normal operation. Summary of the Invention

[0003] The main objective of this invention is to provide a method for repairing line defects in a display panel, as well as a display panel and a display device, aiming to solve the technical problem that traditional peripheral repair methods cannot be applied to G-type line defects in the prior art.

[0004] To achieve the above objectives, the present invention proposes a method for repairing line defects in a display panel. The display area includes pixels arranged in an array. Multiple common electrode lines and multiple gate lines extending in the row direction are provided between the pixels. Multiple signal lines extending in the column direction are also provided between the pixels. The method for repairing line defects in the display panel includes:

[0005] When a broken gate line exists among the multiple gate lines, the adjacent common electrode line corresponding to the broken gate line is determined, and the signal lines on both sides of the break point of the broken gate line are selected as bridging signal lines. The adjacent common electrode line is connected to the broken gate line in the same row of pixels.

[0006] The broken grid line and the adjacent common electrode line are respectively fused to the bridging signal line to form a through line that bypasses the break point;

[0007] Disconnect the bridging signal line to avoid crosstalk between the bridging signal line and the through line, and restore normal drive to the broken gate line.

[0008] Repair the disconnected bridging signal line to restore normal drive to the bridging signal line.

[0009] Optionally, the step of fusing the bridging signal line with the broken gate line and the adjacent common electrode line respectively to form a through line bypassing the break point includes:

[0010] Based on the bridging signal line and the broken grid line, a first intersection position and a second intersection position are determined, and the first intersection position and the second intersection position are respectively located on both sides of the break point;

[0011] The third intersection position and the fourth intersection position are determined based on the bridging signal line and the adjacent common electrode line;

[0012] The broken grid line and the bridging signal line are fused together at the first intersection position and the second intersection position, and the adjacent common electrode line and the bridging signal line are fused together at the third intersection position and the fourth intersection position to form the through line.

[0013] Optionally, disconnecting the bridging signal line includes:

[0014] Based on the first intersection position, the second intersection position, the third intersection position, and the fourth intersection position, the corresponding first disconnect position, second disconnect position, third disconnect position, and fourth disconnect position are determined on the bridging signal line, respectively.

[0015] Disconnect the first disconnect position, the second disconnect position, the third disconnect position, and the fourth disconnect position on the bridging signal line.

[0016] Optionally, repairing the disconnected bridging signal line to restore normal drive of the bridging signal line includes:

[0017] Based on the disconnected bridging signal line, determine the target signal line corresponding to the disconnected bridging signal line, wherein the target signal line and the pixel connected to the disconnected bridging signal line have the same display color type;

[0018] Select a bridging common electrode line from among the multiple common electrode lines;

[0019] Based on the bridging common electrode line, the disconnected bridging signal line is fused with the corresponding target signal line to form a new signal path;

[0020] Based on the new signal path, normal drive of the bridging signal line is restored.

[0021] Optionally, the step of fusing the disconnected bridging signal line with the corresponding target signal line based on the bridging common electrode line to form a new signal path includes:

[0022] The fifth intersection position is determined based on the target signal line and the bridging common electrode line;

[0023] The sixth intersection position is determined based on the disconnected bridging signal line and the bridging common electrode line;

[0024] The new signal path is formed by fusion at the fifth and sixth intersection positions.

[0025] Optionally, restoring normal drive of the disconnected bridging signal line based on the new signal path includes:

[0026] Based on the fifth intersection position and the sixth intersection position, the fifth disconnection position and the sixth disconnection position are determined on the bridging common electrode line respectively;

[0027] Disconnect the fifth disconnect position from the sixth disconnect position on the bridging common electrode line to form a closed circuit for the new signal path, thereby restoring normal drive to the bridging signal line.

[0028] Optionally, when the number of target signal lines is equal to a preset number, the signal path is a series signal path; when the number of target signal lines is greater than the preset number, the new signal path is a parallel signal path.

[0029] Optionally, the bridging common electrode line is the common electrode line closest to the edge of the display area among the plurality of common electrode lines.

[0030] To achieve the above objectives, the present invention also proposes a display panel, the display panel including a display area, the display area including an array of pixels, the pixels having multiple common electrode lines and multiple gate lines extending in the row direction between the pixels, the pixels having multiple signal lines extending in the column direction between the pixels, when there is a broken gate line among the multiple gate lines, the broken gate line is fused with a bridging signal line and an adjacent common electrode line to form a through line bypassing the break point of the broken gate line, so as to restore normal driving of the broken gate line after the bridging signal line is broken, the bridging signal line being the signal line on both sides of the break point, and the adjacent common electrode line and the broken gate line connecting to the same row of pixels.

[0031] To achieve the above objectives, the present invention also proposes a display device, the display device comprising a backlight module and a display panel as described above, wherein the backlight module is disposed correspondingly to the display panel, and the backlight module is used to provide a backlight source to the display panel.

[0032] In this invention, when a broken gate line exists among multiple gate lines, the adjacent common electrode line corresponding to the broken gate line is determined, and the signal lines on both sides of the break point of the broken gate line are selected as bridging signal lines. The adjacent common electrode line and the broken gate line are connected to the same row of pixels. The broken gate line and the adjacent common electrode line are respectively fused with the bridging signal line to form a through line bypassing the break point. The bridging signal line is then disconnected to avoid crosstalk of the bridging signal line to the through line, restoring normal driving of the broken gate line. The disconnected bridging signal line is then repaired to restore normal driving of the bridging signal line. Since traditional peripheral repair methods cannot be applied to Class G line defects, once a gate line is broken, the display panel is difficult to restore normal display. This invention utilizes the signal lines and common electrodes within the display panel to bridge the broken gate line, forming a through-path bypassing the break point. Then, the signal lines used for bridging are disconnected, allowing the broken gate line to resume normal operation. At this point, the Class G line defect is transformed into a Class S line defect. After repairing the broken signal line, the display panel can restore normal display, thus achieving the repair of Class G line defects. Furthermore, it is simple to implement and has operability and flexibility. Attached Figure Description

[0033] 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 only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0034] Figure 1 This is a flowchart illustrating the first embodiment of the line defect repair method of the present invention;

[0035] Figure 2 This is a schematic diagram of the structure of a display panel according to one embodiment of the line defect repair method of the present invention;

[0036] Figure 3 This is a schematic diagram of a broken grid wire repair method according to one embodiment of the wire defect repair method of the present invention;

[0037] Figure 4 This is a flowchart illustrating the second embodiment of the line defect repair method of the present invention;

[0038] Figure 5 This is a schematic diagram of a series repair method according to one embodiment of the line defect repair method of the present invention;

[0039] Figure 6 This is a schematic diagram of parallel repair in one embodiment of the line defect repair method of the present invention;

[0040] Figure 7 This is a schematic diagram of the structure of one embodiment of the display device of the present invention.

[0041] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0042] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0043] 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 a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0044] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0045] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0046] Example 1

[0047] Reference Figure 1 , Figure 1 This is a flowchart illustrating the first embodiment of the line defect repair method for a display panel according to the present invention. The present invention proposes a first embodiment of the line defect repair method.

[0048] In this embodiment, the method for repairing line defects in the display panel includes:

[0049] Step S10: When there is a broken gate line among the multiple gate lines, determine the adjacent common electrode line corresponding to the broken gate line, and select the signal lines on both sides of the break point of the broken gate line as bridging signal lines. The adjacent common electrode line and the broken gate line are connected to the same row of pixels.

[0050] It should be noted that the implementing entity in this embodiment can be a line defect repair device for a display panel, and the line defect repair program running on the display panel line defect repair device can repair Class G line defects in the display panel. It can also be other terminal devices capable of implementing line defect repair methods. This embodiment does not limit this; the description will use a line defect repair device for a display panel as an example.

[0051] It is understood that this embodiment is applied to a display panel. In this embodiment, the display area includes pixels distributed in an array. Multiple common electrode lines and multiple gate lines extending in the row direction are provided between the pixels, and multiple signal lines extending in the column direction are provided between the pixels.

[0052] It should be understood that a display panel typically includes a display area (Active Area, AA) and a non-display area. The display area usually has multiple Source lines (signal lines), multiple Com lines (common electrode lines), and multiple Gate lines. Each row of pixels is connected to one Gate line and one Common electrode line. The Gate and Common electrode lines connecting each row of pixels are usually positioned above / below the pixels in that row. Each column of pixels is connected to one Signal line. The Signal lines connecting each column of pixels are usually positioned to the left / right of the pixels in that column. Pixels are typically arranged in an array, including red, green, and blue pixels. Red pixels can be abbreviated as R or R-pixel, green pixels as G or G-pixel, and blue pixels as B or B-pixel. Figure 2 As shown, between the R, G, and B pixels distributed in the array, all gate lines (Gate 1 to Gaten) and all common electrode lines (Com 1 to Com n) extend in the row direction, and all signal lines (Source 1 to Source m) extend in the column direction. Each row of pixels is connected to the gate lines and common electrode lines above it, and each column of pixels is connected to the signal lines on the left. The gate lines are perpendicular to the signal lines, the common electrode lines are perpendicular to the signal lines, the gate lines are parallel to the common electrode lines, the gate lines intersect the signal lines insulated from each other, and the common electrode lines intersect the signal lines insulated from each other.

[0053] It should be noted that one end of the signal line is usually connected to the source driver to obtain the corresponding voltage input, and the other end of the gate line is usually connected to the gate driver to obtain the corresponding voltage input.

[0054] It is understood that a Class G line defect refers to a break in the Gate line after a breakpoint / abnormal point, and a Class S line defect refers to a break in the Source line after a breakpoint / abnormal point. The line defect being repaired in this embodiment is a Class G line defect. A broken gate line refers to a gate line that has broken after a breakpoint / abnormal point, i.e., a gate line that needs to be repaired. The steps for determining a broken gate line include: detecting multiple gate lines to determine if a breakpoint exists; if a breakpoint exists, determining that a broken gate line exists, and identifying the broken gate line based on the location of the breakpoint.

[0055] It should be understood that when a break / abnormal point is detected in a certain grid line, the location of the line where the break / abnormal point occurred is determined based on the location of the break / abnormal point, thereby identifying the current broken grid line.

[0056] It should be noted that adjacent common electrode lines refer to common electrode lines adjacent to broken gate lines. Adjacent common electrode lines are usually connected to the same row of pixels as broken gate lines. (Refer to...) Figure 2 If Gate 3 is a broken gate line, then the adjacent common electrode line is Com 3.

[0057] It is understandable that signal lines are needed to bridge the broken grid line with the adjacent common electrode line. The bridging signal line is the signal line used to bridge the broken grid line with the adjacent common electrode line. In this embodiment, the signal lines on both sides of the break point of the broken grid line are selected as bridging signal lines. That is, signal lines are selected on both sides of the break point of the broken grid line. Usually, the signal line closest to the break point is selected on both sides of the break point.

[0058] Step S20: The broken grid line and the adjacent common electrode line are respectively fused with the bridging signal line to form a through line that bypasses the break point.

[0059] It should be understood that the broken wire needs to be fused with the bridging signal line, usually at the intersection of the broken wire and the bridging signal line. Similarly, adjacent common electrode lines need to be fused with the bridging signal line, also usually at the intersection of adjacent common electrode lines and the bridging signal line. Since the bridging signal line is on both sides of the break point, after the broken wire and the bridging signal line are fused, their connection points are located on both sides of the break point. Similarly, after adjacent common electrode lines are fused with the bridging signal line, they can be connected to both sides of the break point through the bridging signal line, thus bypassing the break point in the broken wire and forming a continuous circuit.

[0060] Further, step S20 includes: determining a first intersection position and a second intersection position based on the bridging signal line and the broken grid line, wherein the first intersection position and the second intersection position are respectively located on both sides of the break point; determining a third intersection position and a fourth intersection position based on the bridging signal line and the adjacent common electrode line; fusing the broken grid line and the bridging signal line at the first intersection position and the second intersection position, and fusing the adjacent common electrode line and the bridging signal line at the third intersection position and the fourth intersection position to form the through line.

[0061] It should be noted that, since a signal line is selected on each side of the break point, there are two intersection points between the bridging signal line and the broken grid line, namely the first intersection point and the second intersection point, located on both sides of the break point. It can be considered that the first intersection point and the second intersection point are the positions where the bridging signal line and the broken grid line need to be fused together. There are two intersection points between the bridging signal line and the adjacent common electrode line, namely the third intersection point and the fourth intersection point. It can be considered that the third intersection point and the fourth intersection point are the positions where the bridging signal line and the adjacent common electrode line need to be fused together.

[0062] Understandably, after determining the first, second, third, and fourth intersection positions, the broken grid wire and the bridging signal line are fused together at the first and second intersection positions, and adjacent common electrode wires and bridging signal lines are fused together at the third and fourth intersection positions to form a through line that can bypass the break point.

[0063] Step S30: Disconnect the bridging signal line to avoid crosstalk between the bridging signal line and the through line, and restore normal drive to the disconnected gate line.

[0064] It should be understood that, since this embodiment fuses the broken grid line, adjacent common electrode line, and bridging signal line, after forming a through-circuit, the signal in the broken grid line will be subject to crosstalk from the signal in the bridging signal line. Therefore, the bridging signal line needs to be disconnected. The specific steps for disconnecting the bridging signal line include: determining corresponding first disconnection positions, second disconnection positions, third disconnection positions, and fourth disconnection positions on the bridging signal line according to the first intersection position, the second intersection position, the third intersection position, and the fourth intersection position; and disconnecting the first disconnection position, the second disconnection position, the third disconnection position, and the fourth disconnection position on the bridging signal line.

[0065] It should be noted that the first disconnect position, the second disconnect position, the third disconnect position, and the fourth disconnect position are the positions on the bridging signal line that need to be disconnected. After disconnecting the first disconnect position, the second disconnect position, the third disconnect position, and the fourth disconnect position on the bridging signal line, the through line can be separated from the bridging signal line. The through line is no longer affected by the crosstalk of the bridging signal line, so that the normal drive of the broken grid line can be restored through the through line.

[0066] It is understandable that the first disconnect position, the second disconnect position, the third disconnect position, and the fourth disconnect position are usually determined based on the position where the bridging signal line is fused. That is, the first disconnect position, the second disconnect position, the third disconnect position, and the fourth disconnect position are determined based on the first intersection position, the second intersection position, the third intersection position, and the fourth intersection position, respectively. The first disconnect position is usually located in the direction away from the adjacent common electrode line from the first intersection position. The second disconnect position is usually located in the direction away from the adjacent common electrode line from the second intersection position. The third disconnect position is usually located in the direction away from the broken grid line from the third intersection position. The fourth disconnect position is usually located in the direction away from the broken grid line from the fourth intersection position. If adjacent common electrode lines are located above the broken grid line, the first break position is located below the first intersection position, the second break position is located below the second intersection position, the third break position is located above the third intersection position, and the fourth break position is located above the fourth intersection position; if adjacent common electrode lines are located below the broken grid line, the first break position is located above the first intersection position, the second break position is located above the second intersection position, the third break position is located below the third intersection position, and the fourth break position is located below the fourth intersection position.

[0067] It should be understood that, in addition to disconnecting the two bridging signal lines, it is also necessary to disconnect the adjacent common electrode lines to avoid the influence of the adjacent common electrode lines on the through line. At this time, the through line is not only separated from the bridging signal lines, but also from the adjacent common electrode lines. The through line is no longer affected by the crosstalk of the bridging signal lines and the adjacent common electrode lines. The normal drive of the broken gate line can be restored through the through line to repair the G-class line defect.

[0068] It should be noted that the positions that need to be disconnected on adjacent common electrode lines are located on both sides of the fusion position. Since the adjacent common electrode lines and the bridging signal lines are fused at the third and fourth intersection positions, the disconnection positions should be located to the left of the third intersection position and to the right of the fourth intersection position. Disconnecting the corresponding positions will disconnect the adjacent common electrode lines.

[0069] like Figure 3The diagram shows a repair schematic for a broken gate wire. In the diagram, Com x represents adjacent common electrode lines, point A is the break point, and Gate x, where point A is located, is the broken gate wire. Source y1 and Source y2 are the signal lines on both sides of break point A, i.e., bridging signal lines. The intersection of Gate x and Source y1 is W1, the intersection of Gate x and Source y2 is W2, the intersection of Com x and Source y1 is W3, and the intersection of Com x and Source y2 is W4. Welding is performed at W1, W2, W3, and W4 respectively to form a continuous line bypassing break point A (W1-W3-W4-W2). Then, a break point C1 is determined below W1, a break point C2 is determined below W2, a break point C3 is determined above W3, and a break point C4 is determined above W4. The breaks at C1, C2, C3, and C4 are then made. The continuous line is not affected by the intersection of Source y1 and Source y2. The crosstalk of y2 is resolved by determining a disconnection point C5 to the left of W3 and a disconnection point C6 to the right of W4. The through line can be free from the crosstalk of Com x, and Gate x can resume normal drive.

[0070] Step S40: Repair the disconnected bridging signal line to restore normal drive to the bridging signal line.

[0071] It should be understood that after the broken grid line is repaired, all grid lines in the display panel can be driven normally, but the bridging signal line is broken. At this time, the G-type line defect is transformed into an S-type line defect. In other words, after the broken bridging signal line is repaired, the signal lines in the display panel can also be driven normally, and the display panel can restore normal display.

[0072] It should be noted that the disconnected bridging signal line can be repaired using any suitable repair method, and this embodiment does not impose any restrictions on this.

[0073] In this embodiment, when a broken gate line exists among multiple gate lines, the adjacent common electrode line corresponding to the broken gate line is determined, and the signal lines on both sides of the break point of the broken gate line are selected as bridging signal lines. The adjacent common electrode line and the broken gate line are connected to the same row of pixels. The broken gate line and the adjacent common electrode line are respectively fused with the bridging signal line to form a through line bypassing the break point. The bridging signal line is then disconnected to avoid crosstalk between the bridging signal line and the through line, restoring normal driving of the broken gate line. The disconnected bridging signal line is then repaired to restore normal driving of the bridging signal line. Since traditional peripheral repair methods cannot be applied to Class G line defects, once a grid line is broken, the display panel is difficult to restore normal display. This embodiment uses the signal lines and common electrodes inside the display panel to bridge the broken grid lines, forming a through-path that bypasses the break point. Then, the signal lines used for bridging are disconnected, allowing the broken grid lines to resume normal operation. At this point, the Class G line defect can be transformed into a Class S line defect. After repairing the broken signal lines, the display panel can restore normal display, ensuring display quality and achieving the repair of Class G line defects. Moreover, it is simple to implement and has operability and flexibility.

[0074] Example 2

[0075] Reference Figure 4 , Figure 4 This is a flowchart illustrating a second embodiment of the line defect repair method of the present invention. The present invention proposes a second embodiment of the line defect repair method.

[0076] In this embodiment, step S40 includes:

[0077] Step S401: Based on the disconnected bridging signal line, determine the target signal line corresponding to the disconnected bridging signal line, wherein the target signal line and the pixel connected to the disconnected bridging signal line have the same display color type.

[0078] It should be noted that for a disconnected bridge signal line, the part from the disconnection point to the voltage input can be driven normally, while the remaining part lacks a signal source, forming a broken line.

[0079] Understandably, the target signal line refers to a signal line that has the same display color type and source voltage input as the disconnected bridging signal line. Display color type refers to the display color of a pixel. Since there are three types of pixels, there are also three corresponding display color types: red pixels correspond to red, green pixels to green, and blue pixels to blue. Typically, the target signal line and the pixel connected to the disconnected bridging signal line are of the same type; that is, their display colors must be consistent. For example, if the disconnected bridging signal line connects to a red pixel, then the pixel connected to the target signal line must also be a red pixel. The target signal line and the disconnected bridging signal line must have the same voltage input; that is, they must have source voltage input. Among all the signal lines, it is necessary to find a signal line that has the same display color type and the same source voltage input as the disconnected bridging signal line. Among all the signal lines that meet the requirements, the signal line that is closest to the disconnected bridging signal line can be selected as the target signal line, or other suitable signal lines can be selected. This embodiment does not limit this.

[0080] It should be understood that the number of target signal lines selected can be 1 or a value greater than 1. This embodiment does not limit this. Different numbers of target signal lines selected will result in different specific repair methods for disconnected bridging signal lines.

[0081] In the specific implementation, a signal line with the same display color type and the same source voltage input as the disconnected bridging signal line is found and used as the target signal line for subsequent fusion splicing.

[0082] Step S402: Select a bridging common electrode line from the multiple common electrode lines.

[0083] It should be noted that the bridging common electrode line is the common electrode line selected for splicing the target signal line and the disconnected bridging signal line.

[0084] In this embodiment, the bridging common electrode line is the common electrode line closest to the edge of the display area among multiple common electrode lines. In other words, the selected bridging common electrode line is the one closest to the edge of the display area (i.e., the dummy line). See reference [reference needed]. Figure 2 Com n in.

[0085] Step S403: Based on the bridging common electrode line, the disconnected bridging signal line is fused with the corresponding target signal line to form a new signal path.

[0086] Understandably, the bridging signal line to be disconnected is fused to the corresponding target signal line on the bridging common electrode line to form a new signal path. Each disconnected bridging signal line requires a separate target signal line for fusion.

[0087] Further, step S403 includes: determining a fifth intersection position based on the target signal line and the bridging common electrode line; determining a sixth intersection position based on the disconnected bridging signal line and the bridging common electrode line; and performing fusion welding at the fifth intersection position and the sixth intersection position to form the new signal path.

[0088] It should be understood that the fifth intersection position is the intersection position between the target signal line and the bridging common electrode line, and the sixth intersection position is the intersection position between the bridging signal line and the bridging common electrode line.

[0089] It should be noted that when the number of target signal lines is equal to the preset number, the signal path is a series signal path; when the number of target signal lines is greater than the preset number, the new signal path is a parallel signal path.

[0090] It is understood that the preset quantity is a pre-set quantity threshold. In this embodiment, the preset quantity is 1, the number of target signal lines is equal to the preset quantity, that is, one target signal line is selected for each bridging signal line, and the number of target signal lines is greater than the preset quantity, that is, at least two target signal lines are selected for each bridging signal line.

[0091] It should be understood that if only one target signal line is selected for splicing, a series repair method can be used to repair the broken bridging signal line. In this case, the number of the fifth and sixth intersection positions is 1 each. Splicing at the fifth and sixth intersection positions can form a new signal path, which is a series signal path.

[0092] It should be noted that if two or more target signal lines are selected for splicing, a parallel repair method can be used to repair the broken bridging signal lines. All selected target signal lines can be located on one side of the corresponding bridging signal line, or they can be located on opposite sides of the corresponding bridging signal line. This embodiment does not impose any restrictions on this. In this case, there are at least two fifth intersection positions and one sixth intersection position. Splicing at the fifth and sixth intersection positions can form a new signal path, which is a parallel signal path.

[0093] In practice, the target signal line and the broken signal line are fused together at the corresponding positions of the bridging common electrode line to form a new signal path, which is used to provide normal voltage to the broken bridging signal line.

[0094] Step S404: Based on the new signal path, restore normal drive to the bridging signal line.

[0095] It should be understood that the part of the bridging signal line that is missing a signal source and forms a break is the broken part. The new signal path needs to form a closed circuit in order to use the same source voltage input between the target signal line and the bridging signal line to provide normal voltage to the broken part, so that the broken part can be restored to normal and can be driven normally, so that the display panel can display normally.

[0096] Further, step S404 includes: determining a fifth disconnection position and a sixth disconnection position on the bridging common electrode line according to the fifth intersection position and the sixth intersection position; disconnecting the fifth disconnection position and the sixth disconnection position on the bridging common electrode line so that the new signal path forms a closed circuit and restoring normal driving of the bridging signal line.

[0097] It should be noted that the fifth and sixth disconnect positions are the positions where the bridging common electrode line needs to be disconnected / cut off. After the fifth and sixth disconnect positions are set, the series signal path / parallel signal path can be made into a closed circuit, thereby using the same source voltage input between the target signal line and the bridging signal line to provide normal voltage to the disconnected part.

[0098] Understandably, if only one target signal line is selected for splicing, the series repair method is used to repair the broken bridge signal line. Since the splicing is performed at two points (the fifth intersection position and the sixth intersection position), the fifth break position is usually determined near the fifth intersection position, and the sixth break position is determined near the sixth intersection position. For example, assuming the fifth intersection position is on the left and the sixth intersection position is on the right, the fifth break position can be set to the left of the fifth intersection position and the sixth break position can be set to the right of the sixth intersection position to ensure that the series signal path can form a closed circuit. In order to obtain better results, the fifth break position is usually as close as possible to the fifth intersection position, and the sixth break position is usually as close as possible to the sixth intersection position.

[0099] In the specific implementation, a target signal line is selected, and fusion is performed at the intersection of the disconnected bridging signal line and the bridging common electrode line, as well as at the intersection of the target signal line and the bridging common electrode line, to form a series signal path. The same source voltage input between the target signal line and the bridging signal line is used to provide normal voltage to the disconnected part, so that the display panel can resume normal display.

[0100] like Figure 5The diagram shows a series repair process. In the diagram, the Dummy line is the bridging common electrode line, and R1, G1, B1, R2, G2, B2, R1', G1', and B1' are all signal lines. R1, R2, and R3 connect to the red pixels, G1, G2, and G3 connect to the green pixels, and B1, B2, and B3 connect to the blue pixels. Point A' is the break point, and the R1 signal line at point A' is one of the broken bridging signal lines. If R1' and R1 have the same source voltage input, then the R1' signal line is selected as the target signal line. The intersection of the R1 signal line and the Dummy line is W5, and the intersection of the R1' signal line and the Dummy line is W6. Welding is performed at W5 and W6 respectively to obtain a series signal path. A break point K1 is determined on the left side of W5, and a break point K2 is determined on the right side of W6. Breaking K1 and K2 makes the series signal path a closed circuit. At this time, R1' and R1 form a series loop, and the display panel returns to normal display.

[0101] It should be understood that if two or more target signal lines are selected for fusion splicing, and a parallel repair method is used to repair the broken bridging signal lines, since fusion is performed at least at three points (at least two fifth and sixth intersection points), it is necessary to determine the points on both sides of all the fifth and sixth break points, i.e., the two edge intersection points. The fifth and sixth break points are then determined near the two edge intersection points respectively. Usually, the fifth break point is determined to the left of the edge intersection point on the left, and the sixth break point is determined to the right of the edge intersection point on the right, to ensure that the parallel signal path can form a closed circuit. In order to obtain better results, the fifth and sixth break points are usually selected as close as possible to the edge intersection points when determining them.

[0102] In the specific implementation, at least two target signal lines are selected and fused together at the intersection of the disconnected bridging signal line and the bridging common electrode line, as well as at at least two intersections of the target signal line and the bridging common electrode line, to form a parallel signal path. The same source voltage input between the target signal line and the bridging signal line is used to provide normal voltage to the disconnected part, so that the display panel can resume normal display.

[0103] like Figure 6The diagram shows a parallel repair schematic. In the diagram, the Dummy line is the bridging common electrode line. R1, G1, B1, R2, G2, B2, R1', G1', B1', R1”, G1”, and B1” are all signal lines. R1, R2, and R3 connect to the red pixels; G1, G2, and G3 connect to the green pixels; and B1, B2, and B3 connect to the blue pixels. Point A' is the break point, and the R1 signal line at point A' is one of the broken bridging signal lines. If R1”, R1', and R1 have the same source voltage input, select R1' and R1”. "The signal lines are the target signal lines. The intersection of the R1 signal line and the Dummy line is W5, the intersection of the R1' signal line and the Dummy line is W6, and the intersection of the R1" signal line and the Dummy line is W7. Welding is performed at W6 and W7 respectively to obtain a parallel signal path. A disconnection position K1 is determined on the left side of W6, and a disconnection position K2 is determined on the right side of W7. Disconnecting K1 and K2 makes the parallel signal path form a closed circuit. At this time, R1", R1' and R1 form a parallel loop, and the display panel returns to normal display.

[0104] In this embodiment, based on the broken bridging signal line, the target signal line corresponding to the broken bridging signal line is determined. The pixels connected to the target signal line and the broken bridging signal line have the same display color type. A bridging common electrode line is selected from multiple common electrode lines. Based on the bridging common electrode line, the broken bridging signal line and the corresponding target signal line are fused together to form a new signal path. Based on the new signal path, normal driving of the bridging signal line is restored. This embodiment utilizes the common electrode lines of the display area of ​​the display panel for splicing to repair broken lines. At the same time, by using the same source voltage input, normal voltage can be provided to the broken part, enabling the panel to restore normal display and ensuring display effect. Using the original circuit of the panel for line defect repair can be applied to narrow bezel display panels, and it is simple to implement, operable, and flat.

[0105] To achieve the above objectives, the present invention also proposes a display panel, the display panel including a display area, the display area including an array of pixels, the pixels having multiple common electrode lines and multiple gate lines extending in the row direction between the pixels, the pixels having multiple signal lines extending in the column direction between the pixels, when there is a broken gate line among the multiple gate lines, the broken gate line is fused with a bridging signal line and an adjacent common electrode line to form a through line bypassing the break point of the broken gate line, so as to restore normal driving of the broken gate line after the bridging signal line is broken, the bridging signal line being the signal line on both sides of the break point, and the adjacent common electrode line and the broken gate line connecting to the same row of pixels.

[0106] The display panel can apply the technical solutions of all the above embodiments, and the display panel has at least the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0107] Reference Figure 7 , Figure 7 This is a schematic diagram of one embodiment of the display device of the present invention. To achieve the above objectives, the present invention also proposes a display device, which includes a backlight module 20 and a display panel 10 as described above. The backlight module 20 is correspondingly disposed with the display panel 10, and the backlight module 20 is used to provide a backlight source to the display panel 10. The specific structure of the display panel 10 is as described in the above embodiments. Since this display device can adopt the technical solutions of all the above embodiments, it at least has the beneficial effects brought by the technical solutions of the above embodiments, and will not be described in detail here.

[0108] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A method for repairing line defects in a display panel, the display panel comprising a display area, the display area comprising pixels arranged in an array, wherein multiple common electrode lines and multiple gate lines extending in a row direction are provided between the pixels, and multiple signal lines extending in a column direction are provided between the pixels, characterized in that, The method for repairing line defects in the display panel includes: When a broken gate line exists among the multiple gate lines, the adjacent common electrode line corresponding to the broken gate line is determined, and the signal lines on both sides of the break point of the broken gate line are selected as bridging signal lines. The adjacent common electrode line is connected to the broken gate line in the same row of pixels. The broken grid line and the adjacent common electrode line are respectively fused to the bridging signal line to form a through line that bypasses the break point; Disconnect the bridging signal line to avoid crosstalk between the bridging signal line and the through line, and restore normal drive to the broken gate line. Repairing the disconnected bridging signal line to restore normal drive to the bridging signal line specifically includes: Based on the disconnected bridging signal line, determine the target signal line corresponding to the disconnected bridging signal line. The target signal line and the pixel connected to the disconnected bridging signal line have the same display color type. One end of both the bridging signal line and the target signal line are connected to the source driver. Select a bridging common electrode line from among the multiple common electrode lines; Based on the bridging common electrode line, the disconnected bridging signal line is fused with the corresponding target signal line to form a new signal path; Based on the new signal path, normal drive of the bridging signal line is restored.

2. The line defect repair method as described in claim 1, characterized in that, The step of fusing the bridging signal line with the broken grid line and the adjacent common electrode line respectively to form a through line bypassing the break point includes: Based on the bridging signal line and the broken grid line, a first intersection position and a second intersection position are determined, and the first intersection position and the second intersection position are respectively located on both sides of the break point; The third intersection position and the fourth intersection position are determined based on the bridging signal line and the adjacent common electrode line; The broken grid line and the bridging signal line are fused together at the first intersection position and the second intersection position, and the adjacent common electrode line and the bridging signal line are fused together at the third intersection position and the fourth intersection position to form the through line.

3. The line defect repair method as described in claim 2, characterized in that, Disconnecting the bridging signal line includes: Based on the first intersection position, the second intersection position, the third intersection position, and the fourth intersection position, the corresponding first disconnect position, second disconnect position, third disconnect position, and fourth disconnect position are determined on the bridging signal line, respectively. Disconnect the first disconnect position, the second disconnect position, the third disconnect position, and the fourth disconnect position on the bridging signal line.

4. The line defect repair method as described in claim 1, characterized in that, The step of fusing the disconnected bridging signal line with the corresponding target signal line based on the bridging common electrode line to form a new signal path includes: The fifth intersection position is determined based on the target signal line and the bridging common electrode line; The sixth intersection position is determined based on the disconnected bridging signal line and the bridging common electrode line; The new signal path is formed by fusion at the fifth and sixth intersection positions.

5. The line defect repair method as described in claim 4, characterized in that, The restoration of normal drive to the disconnected bridging signal line based on the new signal path includes: Based on the fifth intersection position and the sixth intersection position, the fifth disconnection position and the sixth disconnection position are determined on the bridging common electrode line respectively; Disconnect the fifth disconnect position from the sixth disconnect position on the bridging common electrode line to form a closed circuit for the new signal path, thereby restoring normal drive to the bridging signal line.

6. The line defect repair method as described in claim 1, characterized in that, When the number of target signal lines is equal to the preset number, the signal path is a series signal path; when the number of target signal lines is greater than the preset number, the new signal path is a parallel signal path.

7. The line defect repair method as described in claim 1, characterized in that, The bridging common electrode line is the common electrode line closest to the edge of the display area among the multiple common electrode lines.

8. A display panel, the display panel comprising a display area, the display area comprising pixels arranged in an array, wherein multiple common electrode lines and multiple gate lines extending in a row direction are provided between the pixels, and multiple signal lines extending in a column direction are provided between the pixels, characterized in that, When a broken gate line exists among the multiple gate lines, the broken gate line is fused with a bridging signal line and an adjacent common electrode line to form a through line that bypasses the break point of the broken gate line. This is to restore normal driving of the broken gate line after the bridging signal line is broken, and to restore normal driving of the bridging signal line after the broken bridging signal line is repaired. The bridging signal line is the signal line on both sides of the break point, and the adjacent common electrode line is connected to the same row of pixels as the broken gate line. Specifically, by determining the target signal line corresponding to the disconnected bridging signal line, a bridging common electrode line is selected from the plurality of common electrode lines. Based on the bridging common electrode line, the disconnected bridging signal line is fused with the corresponding target signal line to form a new signal path. Based on the new signal path, normal driving of the bridging signal line is restored. The pixels connected to the target signal line and the disconnected bridging signal line have the same display color type. One end of both the bridging signal line and the target signal line is connected to the source driver.

9. A display device, characterized in that, The display device includes a backlight module and a display panel as described in claim 8, wherein the backlight module is disposed correspondingly to the display panel, and the backlight module is used to provide a backlight source to the display panel.

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