Display panel and repairing method and repairing device thereof

Abstract

The invention discloses a display panel and a repairing method and device thereof. The display panel comprises a plurality of pixels arranged in an array; each pixel comprises a pixel driving circuit and a light-emitting element; the pixel driving circuit comprises a driving transistor; the driving transistor is used for providing driving signals for the light-emitting element. The restoration method comprises the following steps: acquiring an abnormal pixel with poor display; and providing a breakdown voltage for the grid electrode of the driving transistor of the abnormal pixel. By adopting the technical scheme, simple, accurate and low-cost display panel repair can be realized.

Description

Technical Field

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

[0002] During the screen manufacturing process, due to process defects or external factors during use, some pixels may be brighter or darker. For example, foreign matter such as dust, organic matter, and metal may be adsorbed into the screen during the manufacturing process. When these foreign matter are close to the color filter, the corresponding pixels will emit abnormally bright light, forming bright spots.

[0003] Traditional repair technology generally uses lasers for repair, which is generally divided into black matrix (BM) repair and direct method (DM) repair. BM repair uses laser to form a gap between the color film and the glass substrate of the pixel that needs to be repaired, and then granulates the black matrix around the pixel, and pushes the generated black particles into the above gap. Repeat this process until the black particles completely cover the bright pixel to achieve repair. DM repair is to use high-energy ultrafast lasers to directly act on the color filter (CF) or transparent electrode (ITO) of the bright pixel to carbonize it, thereby achieving the purpose of darkening the bright spot. However, laser repair requires a laser repair machine, a microscope and safety protection equipment, and the repair cost is relatively high.

[0004] In addition, some minor bright spot problems can be repaired by using special software or programs. These programs repair bright spots by displaying pixels of different colors near the bright spots and repeatedly changing the colors. However, the effect of software repair is often limited, and not all bright spots can be repaired by software.

[0005] Therefore, how to achieve simple, accurate and low-cost display panel repair has become a technical problem that needs to be solved urgently. Summary of the invention

[0006] The present invention provides a display panel and a repair method and a repair device thereof, so as to realize simple, accurate and low-cost repair of the display panel.

[0007] According to one aspect of the present invention, a method for repairing a display panel is provided, wherein the display panel comprises a plurality of pixels arranged in an array; the pixels comprise a pixel driving circuit and a light-emitting element; the pixel driving circuit comprises a driving transistor; the driving transistor is used to provide a driving signal to the light-emitting element;

[0008] The repair method comprises:

[0009] Get abnormal pixels with poor display;

[0010] A breakdown voltage is supplied to the gate of the driving transistor of the abnormal pixel.

[0011] Optionally, before obtaining the abnormal pixel with poor display, the method further includes:

[0012] Gamma calibration is performed on the display panel.

[0013] Optionally, the display panel includes pixels of multiple colors;

[0014] Get abnormal pixels with bad bright spots, including:

[0015] Get the display image when each color pixel emits light individually;

[0016] According to the display picture, abnormal pixels with poor display are determined.

[0017] Optionally, each color pixel includes a plurality of test grayscales;

[0018] Get the display image when each color pixel emits light separately, including:

[0019] Get the display image at each test grayscale when each color pixel emits light separately.

[0020] Optionally, before determining abnormal pixels with bad bright spots according to the display picture, the method further includes:

[0021] Get the display image when all color pixels emit light at the same time.

[0022] Optionally, determining abnormal pixels with bad bright spots according to the display picture includes:

[0023] Acquire a standard image picture corresponding to the display picture, and compare the display picture with the corresponding standard image picture;

[0024] A pixel at a position in the display picture that is different from the corresponding standard image picture is determined as the abnormal pixel.

[0025] Optionally, comparing the display image with the corresponding standard image image includes:

[0026] Automatic optical detection equipment is used to compare the displayed image with the corresponding standard image image.

[0027] Optionally, the pixel driving circuit further includes a data writing transistor; the data writing transistor is used to receive a scanning signal and a data signal, and under the control of the scanning signal, selectively transmit the data signal to the gate of the driving transistor, so that the driving transistor provides a corresponding driving signal to the light-emitting element;

[0028] Providing a breakdown voltage to the gate of the driving transistor of the abnormal pixel, comprising:

[0029] Acquiring row coordinate information and column coordinate information of the abnormal pixel;

[0030] According to the row coordinate information and the column coordinate information, the scanning signal of the row where the abnormal pixel is located is controlled to be at an effective level, and the potential of the data signal of the column where the abnormal pixel is located is controlled to be the breakdown voltage.

[0031] According to another aspect of the present invention, a display panel repair device is provided, wherein the display panel comprises a plurality of pixels; the pixels comprise a pixel driving circuit and a light emitting element; the pixel driving circuit comprises a driving transistor; the driving transistor is used to provide a driving signal to the light emitting element;

[0032] The repair device comprises:

[0033] An abnormal pixel acquisition module is used to acquire abnormal pixels with poor display;

[0034] The repair module is used to provide a breakdown voltage to the gate of the driving transistor of the abnormal pixel.

[0035] According to another aspect of the present invention, there is provided a display panel, which is a display panel repaired by using the display panel repair method described in any embodiment of the present invention.

[0036] The technical solution of the present invention can damage the pixel driving circuit of the abnormal pixel by providing a breakdown voltage to the gate of the driving transistor of the abnormal pixel, so that the abnormal pixel no longer emits light, thereby avoiding poor display of the abnormal pixel and affecting the display effect of the display panel; compared with traditional repair technology, the repair method provided by the embodiment of the present invention can carbonize the driving transistor of the abnormal pixel more simply, accurately and quickly, and does not require the setting of a laser repair machine, a microscope and safety protection equipment, nor does it require the change of the pixel driving circuit, which is conducive to reducing the repair cost and realizing large-scale production application.

[0037] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0039] Figure 1 is a schematic diagram of a top view structure of a display panel provided by an embodiment of the present invention;

[0040] Figure 2 is a schematic diagram of a circuit structure of a pixel provided by an embodiment of the present invention;

[0041] Figure 3 is a schematic diagram of a top view structure of another display panel provided by an embodiment of the present invention;

[0042] Figure 4 is a flow chart of a display panel repair method provided by an embodiment of the present invention;

[0043] Figure 5 is a flow chart of another display panel repair method provided by an embodiment of the present invention;

[0044] Figure 6 It is a structural schematic diagram of a display panel repair device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0045] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0046] It should be noted that the terms "including" and "having" and any variations thereof in the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or apparatus.

[0047] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0048] Figure 1 is a schematic diagram of a top view structure of a display panel provided by an embodiment of the present invention, Figure 2 is a schematic diagram of a circuit structure of a pixel provided by an embodiment of the present invention, with reference to Figure 1 and Figure 2 The display panel 001 includes a plurality of pixels P arranged in an array; the pixel P includes a pixel driving circuit PDC and a light emitting element LED; the pixel driving circuit PDC includes a driving transistor M0; the driving transistor M0 is used to provide a driving signal to the light emitting element LED.

[0049] Among them, the light-emitting element LED includes but is not limited to OLED, Mini LED and Micro LED.

[0050] Exemplarily, the first electrode of the driving transistor M0 receives the first power signal PVDD, the second electrode of the driving transistor is electrically connected to the anode of the light-emitting element LED, and the cathode of the light-emitting element LED receives the second power signal PVEE. The gate of the driving transistor M0 of the pixel driving circuit PDC can receive the data signal Data, and provide a corresponding current to the light-emitting element LED according to the data signal Data, so that the light-emitting element LED displays a corresponding gray scale. In an optional embodiment, each pixel P can include 255 display gray scales, that is, 255 brightness levels.

[0051] Optionally, the display panel 001 includes pixels of multiple colors.

[0052] Each color pixel can emit light of one color, and different color pixels can emit light of different colors.

[0053] Exemplarily, the display panel 001 may include three color pixels, red pixels, green pixels, and blue pixels.

[0054] Optionally, the pixel driving circuit PDC also includes a data writing transistor M1; the data writing transistor M1 is used to receive a scan signal Scan and a data signal Data, and under the control of the scan signal Scan, selectively transmits the data signal Data to the gate of the driving transistor M0, so that the driving transistor Data provides a corresponding driving signal to the light-emitting element LED.

[0055] Exemplarily, the first electrode of the data write transistor M1 receives the data signal Data, the second electrode of the data write transistor M1 is electrically connected to the gate of the driving transistor M0, and the gate of the data write transistor M1 receives the scan signal Scan. When the scan signal Scan is at an effective level, the data write transistor M1 is turned on, and the data signal Data can be transmitted to the gate of the driving transistor M0 via the data write transistor M1.

[0056] Optionally, the pixel driving circuit PDC further includes a storage capacitor Cst; the storage capacitor Cst is used to store the data signal Data in the gate of the driving transistor M0.

[0057] Optional, Figure 3 is a schematic diagram of a top view structure of another display panel provided by an embodiment of the present invention, referring to Figure 2 and Figure 3 The display panel 001 also includes a plurality of scan lines SL and a plurality of data lines DL; the scan lines SL are used to transmit scan signals Scan; the data lines DL are used to transmit data signals Data; pixels P located in the same row can be electrically connected to the same scan line SL, and pixels P located in the same column can be electrically connected to the same data line DL.

[0058] Exemplarily, the pixels P in the same row can receive the same scan signal Scan, and the pixels P in the same column can receive the same data signal Data. The scan signal Scan of each row can jump to the effective level row by row, so that the data write transistors M1 of the pixels P in each row can be turned on row by row; when the data write transistors M1 of the pixels P in a row are all in the on state, the data write transistors M1 of the pixels P in the row can respectively transmit the data signals Data on each data line DL, so that the gates of the driving transistors M0 of the pixels P in the row respectively receive the data signals Data on each data line DL, so that the light-emitting elements LED of the pixels P in the row can display the corresponding gray scale according to the corresponding data signals Data, and the pixels P in the same row can display different gray scales. When the data write transistors M1 of the pixels P in a row are all in the on state, the data write transistors M1 of the pixels P in other rows are all in the off state, and the gates of the driving transistors M0 of the pixels P in other rows will not receive the current data signals Data on each data line DL, so as to ensure that the pixels P in the same column can display different gray scales.

[0059] Figure 4 is a flow chart of a display panel repair method provided by an embodiment of the present invention, with reference to Figure 4 , the repair methods include:

[0060] S1001. Acquire abnormal pixels with poor display.

[0061] S1002 : providing a breakdown voltage to the gate of the driving transistor of the abnormal pixel.

[0062] Among them, abnormal pixels with poor display include bright spots, dark spots, uneven colors, etc. The breakdown voltage refers to the voltage value that can permanently make the driving transistor lose its working ability in a strong electric field environment. In an optional implementation, the breakdown voltage can be twice the maximum working voltage of the driving transistor.

[0063] Exemplary, reference Figure 1 and Figure 2 , abnormal pixels P' with poor display can be detected through abnormal detection, and then the position information of the abnormal pixels P' can be written into the code engineering file, so that the code instructions can accurately act on the abnormal pixels. When the code instructions are executed, the breakdown voltage of the driving transistor M0 of the abnormal pixel P' can be burned, so that the potential of the gate of the driving transistor M0 is the breakdown voltage, the driving transistor M0 is broken down and carbonized, and permanently loses its working ability, and no longer provides a driving signal to the light-emitting element LED. The light-emitting element LED electrically connected to the driving transistor M0 also no longer emits light, and because there are many pixels P in the display panel 001, the abnormal pixel P' will not affect the overall display effect of the display panel 001 after it does not emit light. The burning action is usually completed in a short time, and other error detection instructions are sent and received at the same time to monitor whether the various parameters in the burning process are correct and meet expectations.

[0064] The embodiment of the present invention provides a breakdown voltage to the gate of the driving transistor of the abnormal pixel, thereby damaging the pixel driving circuit of the abnormal pixel, so that the abnormal pixel no longer emits light, thereby avoiding poor display of the abnormal pixel and affecting the display effect of the display panel; compared with traditional repair technology, the repair method provided by the embodiment of the present invention can carbonize the driving transistor of the abnormal pixel more simply, accurately and quickly, and does not require the setting of a laser repair machine, a microscope and safety protection equipment, nor does it require the change of the pixel driving circuit, which is conducive to reducing the repair cost and realizing large-scale production application.

[0065] Optionally, providing a breakdown voltage to the gate of the driving transistor of the abnormal pixel includes: acquiring row coordinate information and column coordinate information of the abnormal pixel; and controlling the scanning signal of the row where the abnormal pixel is located to be at a valid level, and controlling the potential of the data signal of the column where the abnormal pixel is located to be at a breakdown voltage according to the row coordinate information and the column coordinate information.

[0066] The row coordinate information includes the row number where the abnormal pixel is located, and the column coordinate information includes the column number where the abnormal pixel is located.

[0067] Exemplary, reference Figure 2 and Figure 3After acquiring the abnormal pixel P', the row coordinate code and column coordinate code of the abnormal pixel P' can be output, and the row coordinate code and column coordinate code of the abnormal pixel P' can be written into the code engineering file. Through the row coordinate code and column coordinate code, the repair device can control the scan signal Scan of the row where the abnormal pixel P' is located to be at an effective level, so that the data writing transistors M1 of the pixels P in this row are all turned on, and the gates of the driving transistors M0 of the pixels P in this row can receive the current data signal Data on each data line DL; the repair device can also control the potential of the data signal Data of the column where the abnormal pixel P' is located to be the breakdown voltage, while the potential of the data signal Data of other columns is 0V or a voltage within the working voltage range (including the shutdown voltage), so that in the pixels P in this row, only the gate of the driving transistor M0 of the abnormal pixel P' can receive the data signal Data with a potential of the breakdown voltage, thereby realizing the accurate provision of the breakdown voltage to the gate of the driving transistor M0 of the abnormal pixel P', avoiding damage to the surrounding normal pixels.

[0068] Optionally, before obtaining the abnormal pixel with poor display, the method further includes: performing gamma calibration on the display panel.

[0069] Specifically, gamma calibration of a display panel refers to adjusting the brightness and contrast of a display device to ensure that the displayed image maintains consistent color and brightness performance at different brightness levels. The gamma value is a parameter that describes the response curve of a display panel to input brightness, and is usually used to adjust the brightness and contrast of a display panel to make the image more realistic and accurate when displayed. If the display panel is not gamma calibrated, it may cause problems such as color distortion, uneven brightness, or insufficient contrast when the image is displayed, affecting the user's perception and experience of the image. By performing gamma calibration before acquiring abnormal pixels with poor display, it is possible to avoid the brightness of the pixel output not being consistent with expectations, affecting the display, and to eliminate brightness anomalies caused by inaccurate gamma values, thus avoiding the impact of inaccurate gamma values ​​on the acquisition of abnormal pixels.

[0070] Figure 5 is a flowchart of another display panel repair method provided by an embodiment of the present invention, referring to Figure 5 , the repair methods include:

[0071] S2001, obtaining a display image when each color pixel emits light individually.

[0072] Among them, the display picture when each color pixel emits light alone is a single color picture corresponding to the color pixel. For example, the display picture when a red pixel alone can be a red picture, the display picture when a green pixel alone can be a green picture, and the display picture when a blue pixel alone can be a blue picture.

[0073] S2002, obtaining a display image when all color pixels emit light simultaneously.

[0074] Specifically, all color pixels emit light simultaneously so that multiple color pixels of the same pixel unit (minimum repeating unit) can be combined into a certain composite color picture, thereby detecting whether the pixel arrangement in each pixel unit is abnormal.

[0075] For example, all color pixels emitting light simultaneously can make multiple color pixels of the same pixel unit synthesize to display a white picture. If white is not displayed at a certain position, it means that the color of the pixel unit at that position is uneven, the pixel arrangement in the pixel unit at that position is abnormal, and the pixels in the pixel unit at that position are all abnormal pixels.

[0076] S2003. Determine abnormal pixels with poor display according to the displayed image.

[0077] For example, when each color pixel emits light individually, the display panel may present a single color picture. If a bright spot or a dark spot appears at a certain position, it means that the pixel at that position displays poorly, indicating that the pixel at that position is an abnormal pixel.

[0078] For example, all color pixels emitting light simultaneously can make multiple color pixels of the same pixel unit synthesize to display a white picture. If white is not displayed at a certain position, it means that the color of the pixel unit at that position is uneven, that is, the pixel arrangement in the pixel unit at that position is abnormal, and the pixels in the pixel unit at that position are all abnormal pixels.

[0079] S2004 , providing a breakdown voltage to the gate of the driving transistor of the abnormal pixel.

[0080] Exemplarily, the display panel includes red pixels, green pixels, and blue pixels, and the red pixels, green pixels, and blue pixels can be controlled to emit light separately, respectively, so that the display panel presents a red picture, a green picture, and a blue picture, so as to detect whether the red pixels, the green pixels, and the blue pixels are abnormal pixels with poor display. In addition, the red pixels, the green pixels, and the blue pixels can be controlled to emit light simultaneously, so that the display panel presents a picture of a color other than red, green, and blue, such as white, so as to detect whether the red pixels, the green pixels, and the blue pixels have abnormal pixels with abnormal arrangement.

[0081] The embodiments of the present invention can accurately detect poor display and abnormal pixels with abnormal arrangement by controlling each color pixel of the display panel to emit light separately and controlling all colors in the display panel to emit light simultaneously. The abnormal pixels can also be controlled not to emit light by providing a breakdown voltage to the gate of the driving transistor of the abnormal pixels, thereby improving the display effect and avoiding the problems of bright spots, dark spots, and uneven colors on the display screen of the display panel.

[0082] Optionally, obtaining a display picture when each color pixel emits light individually includes: obtaining a display picture at each test grayscale when each color pixel emits light individually.

[0083] Exemplarily, the display panel includes red pixels, green pixels and blue pixels, and each color pixel includes eight test grayscales, and eight display grayscales can be selected from all display grayscales of the pixels as eight test grayscales. First, the red pixels can be controlled to emit light alone, and all red pixels are of the same grayscale, and the display picture under each test grayscale is obtained, and eight red display pictures with different brightness can be obtained. Then, the green pixels are controlled to emit light alone, and all green pixels are of the same grayscale, and the display picture under each test grayscale is obtained, and eight green display pictures with different brightness can be obtained. Finally, the blue pixels are controlled to emit light alone, and all blue pixels are of the same grayscale, and the display picture under each test grayscale is obtained, and eight blue display pictures with different brightness can be obtained. In this way, abnormal pixels can be effectively detected, and it can be detected whether each color pixel displays poorly at different brightnesses, so as to avoid the abnormal response curve of the input brightness of the pixel being not detected, which affects the display effect of the display panel.

[0084] In addition, all color pixels can be controlled to emit light at the same time, and all color pixels display the same test grayscale, and eight test grayscales are displayed in sequence. During this period, eight white display images with different brightness can be recorded to further improve the accuracy of abnormal pixel detection results.

[0085] Optionally, determining abnormal pixels with poor bright spots based on a display screen includes: obtaining a standard image screen corresponding to the display screen, and comparing the display screen with the corresponding standard image screen; and determining that pixels at positions in the display screen that are different from the corresponding standard image screen are abnormal pixels.

[0086] The standard image screen refers to the display screen that should be obtained theoretically when the display panel has no abnormal pixels, and the number of pixels in the standard image screen is the same as the number of pixels in the display panel and corresponds one to one. For example, the standard image screen corresponding to the red legal person display screen is a red display screen with the same brightness (display grayscale) and uniform display, the standard image screen corresponding to the green legal person display screen is a green display screen with the same brightness (display grayscale) and uniform display, and the standard image screen corresponding to the blue legal person display screen is a blue display screen with the same brightness (display grayscale) and uniform display.

[0087] Exemplarily, the brightness (display grayscale) of each pixel in the acquired display image can be compared with the brightness (display grayscale) of each pixel in the standard image image one by one. If there is a difference, the pixel can be considered to be an abnormal pixel.

[0088] On the basis of the above embodiment, the display image is compared with the corresponding standard image image, including: using an automatic optical inspection (AOI) device to compare the display image with the corresponding standard image image.

[0089] Specifically, the high-precision image detection algorithm of the AOI equipment can be used to accurately locate abnormal pixels of the display panel.

[0090] Based on the same inventive concept, an embodiment of the present invention further provides a display panel repair device. Figure 6 is a schematic diagram of the structure of a display panel repair device provided by an embodiment of the present invention, with reference to Figure 6 , the repair device includes:

[0091] The abnormal pixel acquisition module 610 is used to acquire abnormal pixels with poor display;

[0092] The repair module 620 is used to provide a breakdown voltage to the gate of the driving transistor of the abnormal pixel.

[0093] In an optional embodiment, the repair device of the display panel may be disposed in the display driver chip.

[0094] Optionally, the repair device further comprises:

[0095] The calibration module is used to perform gamma calibration on the display panel.

[0096] Optionally, the abnormal pixel acquisition module 610 includes:

[0097] A first acquisition unit, used to acquire a display image when each color pixel emits light individually;

[0098] The first determining unit is used to determine abnormal pixels with poor display according to the display picture.

[0099] Optionally, the first acquisition unit is further used to acquire a display image at each test gray scale when each color pixel emits light independently.

[0100] Optionally, the abnormal pixel acquisition module 610 further includes:

[0101] The second acquisition unit is used to acquire a display picture when all color pixels emit light simultaneously.

[0102] Optionally, the first determining unit includes:

[0103] A comparison subunit, used to obtain a standard image picture corresponding to the display picture, and compare the display picture with the corresponding standard image picture;

[0104] The determination subunit is used to determine that pixels at positions different from the corresponding standard image in the display picture are abnormal pixels.

[0105] Optionally, the sub-comparison unit is also used to compare the displayed image with the corresponding standard image using an automatic optical detection device.

[0106] Optionally, the repair module 620 includes

[0107] A row and column acquisition unit, used to acquire row coordinate information and column coordinate information of abnormal pixels;

[0108] The repair unit is used to control the scanning signal of the row where the abnormal pixel is located to be an effective level and control the potential of the data signal of the column where the abnormal pixel is located to be a breakdown voltage according to the row coordinate information and the column coordinate information.

[0109] The display panel repair device provided in the embodiment of the present invention can execute the display panel repair method provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method.

[0110] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A method for repairing a display panel, characterized in that: The display panel includes a plurality of pixels arranged in an array; the pixels include a pixel driving circuit and a light emitting element; The pixel driving circuit comprises a driving transistor; the driving transistor is used to provide a driving signal to the light emitting element; The repair method comprises: Get abnormal pixels with poor display; A breakdown voltage is supplied to the gate of the driving transistor of the abnormal pixel.

2. The method for repairing a display panel according to claim 1, characterized in that: Before obtaining the abnormal pixels with poor display, it also includes: Gamma calibration is performed on the display panel.

3. The method for repairing a display panel according to claim 1, characterized in that: The display panel includes pixels of multiple colors; Get abnormal pixels with bad bright spots, including: Get the display image when each color pixel emits light individually; According to the display picture, abnormal pixels with poor display are determined.

4. The method for repairing a display panel according to claim 3, characterized in that: Each color pixel includes a plurality of test grayscales; Get the display image when each color pixel emits light separately, including: Get the display image at each test grayscale when each color pixel emits light separately.

5. The method for repairing a display panel according to claim 3, characterized in that: Before determining abnormal pixels with bad bright spots according to the display picture, the method further includes: Get the display image when all color pixels emit light at the same time.

6. The method for repairing a display panel according to any one of claims 3 to 5, characterized in that: According to the display image, determining abnormal pixels with bad bright spots includes: Acquire a standard image picture corresponding to the display picture, and compare the display picture with the corresponding standard image picture; A pixel at a position in the display picture that is different from the corresponding standard image picture is determined as the abnormal pixel.

7. The method for repairing a display panel according to claim 6, characterized in that: Comparing the display image with the corresponding standard image image includes: Automatic optical detection equipment is used to compare the displayed image with the corresponding standard image image.

8. The method for repairing a display panel according to claim 1, characterized in that: The pixel driving circuit further includes a data writing transistor; the data writing transistor is used to receive a scanning signal and a data signal, and under the control of the scanning signal, selectively transmit the data signal to the gate of the driving transistor, so that the driving transistor provides a corresponding driving signal to the light emitting element; Providing a breakdown voltage to the gate of the driving transistor of the abnormal pixel, comprising: Acquiring row coordinate information and column coordinate information of the abnormal pixel; According to the row coordinate information and the column coordinate information, the scanning signal of the row where the abnormal pixel is located is controlled to be at an effective level, and the potential of the data signal of the column where the abnormal pixel is located is controlled to be the breakdown voltage.

9. A display panel repair device, characterized in that: The display panel includes a plurality of pixels; the pixels include a pixel driving circuit and a light emitting element; The pixel driving circuit comprises a driving transistor; the driving transistor is used to provide a driving signal to the light emitting element; The repair device comprises: An abnormal pixel acquisition module is used to acquire abnormal pixels with poor display; The repair module is used to provide a breakdown voltage to the gate of the driving transistor of the abnormal pixel.

10. A display panel, characterized in that: A display panel repaired by using the display panel repair method according to any one of claims 1 to 9.

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