Display panel and repairing method of display panel

Abstract

The application relates to a display panel and a repairing method thereof, and relates to the technical field of display screens. When scanning the gate lines one by one, the application can acquire the current value of the data driving circuit based on the preset data signal for simultaneously driving multiple data lines, and determine whether a fault occurs through the current value, further lock the gate line and / or the circuit related to the gate line where the fault occurs, and then automatically detect the gate line and / or the circuit related to the gate line where the fault occurs, and determine whether a fault occurs through the current value, so that the fault troubleshooting efficiency can be improved, and the repairing efficiency of the weak line or the dark line can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display screen, in particular to a display panel and a repairing method of the display panel. BACKGROUND

[0002] TFT-LCD (Thin Film Transistor Liquid Crystal Display) as a kind of flat panel display device, when TFT-LCD displays, gate line can open pixel unit connected with the gate line when being scanned, data line outputs data signal to the opened pixel unit, to charge. The deflection angle of liquid crystal corresponding to the pixel unit charged with different electric quantity is also different, so that different gray scale pictures can be displayed.

[0003] TFT-LCD will have a certain proportion of weak line or dark line in the production process. SUMMARY

[0004] The present application provides a repairing method of a display panel, the display panel comprising a gate drive circuit, a data drive circuit and a display part, the display part being electrically connected with the gate drive circuit and the data drive circuit, the display part comprising a plurality of gate lines and a plurality of data lines, one end of the gate line being electrically connected with the gate drive circuit, the data line being electrically connected with the data drive circuit, the method comprising: scanning the gate line according to a preset scanning strategy; obtaining a current value corresponding to each gate line, the current value being a current value of the data drive circuit driving the plurality of data lines based on a preset data signal; generating a fault information in response to a result that the current value is less than a first current threshold.

[0005] The present application provides a display panel, characterized in that comprising a gate drive circuit, a data drive circuit and a display part, the display part being electrically connected with the gate drive circuit and the data drive circuit, the display part comprising a plurality of gate lines and a plurality of data lines, one end or both ends of the gate line being electrically connected with the gate drive circuit, the data line being electrically connected with the data drive circuit; wherein the display panel further comprises a repair line and a master control module, the repair line being electrically connected with the master control module and being electrically connected to the gate line corresponding to the fault information, the master control module being used for generating a gate compensation signal of the gate line corresponding to the fault information, and being used for delivering the gate compensation signal to the gate line corresponding to the fault information through the repair line.

[0006] The application can obtain the current value of the data driving circuit based on the preset data signal for driving multiple data lines at the same time when scanning the gate lines one by one, and determine whether a fault occurs through the current value, further lock the gate line and / or the circuit related to the gate line where the fault occurs, and then automatically detect the gate line and / or the circuit related to the gate line where the fault occurs, and determine whether a fault occurs through the current value, which can improve the troubleshooting efficiency and provide a basis for repairing the weak line or the dark line and improve the repair efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0007] In order to more clearly illustrate the technical solutions in the embodiments of the application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0008] Figure 1 Structure diagram of a display panel in some embodiments of the application;

[0009] Figure 2 Flowchart of a repair method in some embodiments of the application;

[0010] Figure 3 Flowchart of a repair method in some embodiments of the application;

[0011] Figure 4 Flowchart of a repair method in some embodiments of the application;

[0012] Figure 5 Structure diagram of a display panel in some embodiments of the application;

[0013] Figure 6 Structure diagram of a repair method in some embodiments of the application;

[0014] Figure 7 Structure diagram of a display panel in some embodiments of the application;

[0015] Figure 8 Partial structure diagram of a display panel in some embodiments of the application;

[0016] Figure 9 Structure diagram of a display panel in some embodiments of the application; Figure 8 Structure diagram of a subtracter in some embodiments of the illustrated embodiments;

[0017] Figure 10 Structure diagram of a display panel in some embodiments of the application;

[0018] Figure 11Figure 1 is a structural schematic diagram of a display panel in some embodiments of the present application;

[0019] Figure 12 Figure 1 is a structural schematic diagram of a display panel in some embodiments of the present application.

[0020] Figure 13 Figure 2 is a structural schematic diagram of a detection device in some embodiments of the present application;

[0021] Figure 14 Figure 3 is a structural schematic diagram of a detection device or a repair device in some embodiments of the present application;

[0022] Figure 15 Figure 4 is a structural schematic diagram of a computer readable storage medium in some embodiments of the present application.

[0023] 10, display part; 11, gate line; 12, data line; 20, data driving circuit; 30, gate driving circuit; 40, master control module; 50, power module; 60, data acquisition circuit; 61, detection resistor; 62, subtractor; 70, repair line; 100, display panel; 200, detection device; 201, power module; 202, data acquisition circuit; 203, master control module; 300, detection device or repair device; 301, processor; 302, memory; 400, computer readable storage medium; 401, program instruction. DETAILED DESCRIPTION

[0024] The present application will be further described below in conjunction with the drawings and embodiments. It is particularly pointed out that the following embodiments are only for illustrating the present application, but not for limiting the scope of the present application. Similarly, the following embodiments are only some embodiments of the present application, but not all embodiments of the present application, and all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of the present application.

[0025] In the present application, the term "embodiment" means that the specific features, structures or characteristics described in conjunction with the embodiment can be included in at least one embodiment of the present application. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in the present application can be combined with other embodiments.

[0026] In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that those skilled in the art can realize it, and when the combination of technical solutions appears contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist, nor is it within the scope of protection required by the present application.

[0027] Please refer to Figure 1 , Figure 1FIG. 1 is a schematic diagram of a display panel according to some embodiments of the present application. The display panel 100 can include a display portion 10, a data driving circuit 20, a gate driving circuit 30, and a master control module 40. The display portion 10 can be electrically connected to the data driving circuit 20 and the gate driving circuit 30. The master control module 40 can be electrically connected to the data driving circuit 20 and the gate driving circuit 30. The display portion 10 can be a display area of the display panel 100, and can display an image corresponding to image data received by the master control module 40 under the cooperation of the data driving circuit 20 and the gate driving circuit 30. In some embodiments, the master control module 40 can be omitted.

[0028] The display panel 100 can be a liquid crystal display (LCD), an organic light-emitting diode display (OLED), a Micro LED display, an active matrix organic light-emitting diode display (AMOLED), or a quantum dot light-emitting diode display (QLED), etc., which has gate lines 11 and data lines 12.

[0029] The display portion 10 can be configured according to a solution known in the art, and will not be described in detail. Herein, the display portion 10 will be briefly described for the purpose of illustrating the scope of protection sought by the present application.

[0030] The display portion 10 can include a plurality of gate lines 11 and a plurality of data lines 12. The plurality of gate lines 11 and the plurality of data lines 12 can cooperate to realize the display of an image by the display portion 10, such as a pixel unit (not shown in the figure). One end of the gate line 11 is electrically connected to the gate driving circuit 30. The data line 12 is electrically connected to the data driving circuit 20.

[0031] Specifically, the data line 12 can realize the lighting of the display portion 10, such as a pixel unit. The gate line 11 can turn on the circuit path between the data line 12 and the pixel unit, so that the pixel unit is lit by the data line 12. The gate line 11 can turn off the circuit path between the data line 12 and the pixel unit, so that the pixel unit is not lit. It can be understood that the turning on and turning off of the circuit path between the data line 12 and the pixel unit can be realized by a switching device (not shown in the figure) in the display portion 10, and the gate line 11 can control the turning on and turning off of the switching device. The switching device can be configured according to a solution known in the art, and will not be described in detail.

[0032] It can be understood that the display portion 10 can further include a pixel unit and a switching device, and the pixel unit can be electrically connected to the plurality of gate lines 11 and the plurality of data lines 12 through the switching device. Of course, the display portion 10 can further include other components, which will not be described herein.

[0033] In addition, in the display portion 10, the structures of the pixel unit, the plurality of gate lines 11, and the plurality of data lines 12 can also be configured according to a solution known in the art, and will not be described in detail.

[0034] The host module 40 can receive image data transmitted to the display panel 100 by other devices, and process the image data, and then provide a scanning signal based on the image data to the gate driving circuit 30, and provide a data signal to the data driving circuit 20. The gate driving circuit 30 can scan the plurality of gate lines 11 one by one based on the scanning signal (since the plurality of gate lines 11 are arranged vertically, the pixel units connected to one gate line 11 on the display part 10 are arranged horizontally, i.e. one row of pixel units, so the "scanning one by one" can also be referred to as "scanning row by row"). The data driving circuit 20 can generate a gray scale voltage or current suitable for the display part 10 based on the data signal, so that the pixel units on the display part 10 are lit under the action of the gray scale voltage or current, and display an image corresponding to the image data received by the host module 40.

[0035] In some embodiments, the host module 40 can include a TCON board (Timing Controller) and a source driver. The TCON board and the source driver can be arranged according to the technical solutions well known in the art.

[0036] It can be understood that the host module 40 can also be arranged according to other technical solutions well known in the art, which will not be described herein again, and is only briefly described herein to clarify the scope of protection claimed in the present application.

[0037] In some embodiments, when the display panel 100 is a liquid crystal display (LCD), the gate lines 11 of the display part 10 are scanned row by row so that the pixel units connected to the gate lines 11 can be lit by the plurality of data lines 12, and the data lines 12 charge the pixel units with gray scale voltages. The deflection angles of the liquid crystals corresponding to the pixel units charged with different amounts of electricity are also different, so that different gray scale pictures can be displayed.

[0038] Next, a display panel repair method is described, which can be used to detect and repair the faulty gate lines 11 on the display panel 100 in the above embodiments, so as to determine the position of the faulty gate lines 11, and then repair them, to automatically detect faults, improve fault troubleshooting efficiency, and provide a basis for the repair process, and improve repair efficiency. Of course, the repair method can also be used to preliminarily detect, determine faults and repair the circuit related to the gate lines 11, such as the gate driving circuit 30.

[0039] In some embodiments, the repair method can be used to detect weak line problems caused by insufficient charging of the pixel units, and can also be used to detect dark line problems caused by the inability of the pixel units to charge, thereby providing a basis for the process of repairing weak lines or dark lines, and improving repair efficiency.

[0040] The display panel 100 may have a certain proportion of circuit breakage or poor contact during production, such as the gate line 11 and the gate drive circuit 30, resulting in dark line or weak line problems, causing the display part 10 to display abnormally at least in part. Further, the display panel 100 needs to be detected for failure, the location of the failure is determined, and then repaired, so as to realize automatic detection of failure, improve failure troubleshooting efficiency, and provide a basis for the repair process and improve repair efficiency.

[0041] Please refer to Figure 2 , Figure 2 is a flowchart of a repair method in some embodiments of the present application. The method can include:

[0042] Step S201: scan the gate lines one by one according to a preset scanning strategy.

[0043] For the gate lines and / or the circuits related to the gate lines, the gate lines can be scanned one by one, so as to collect a large amount of related data in the subsequent steps, and then determine the failure occurred based on the collected related data.

[0044] In some embodiments, the scanning of the gate lines 11 one by one can be realized by the cooperation of the gate drive circuit 30 and the main control module 40 in the above-mentioned embodiments. In some embodiments, the scanning of the gate lines 11 one by one can be realized by the control of the gate drive circuit 30 by the main control module 40 in the above-mentioned embodiments.

[0045] In some embodiments, the preset scanning strategy can be stored in the display panel 100.

[0046] Step S202: obtain the current value corresponding to each gate line.

[0047] In some embodiments, the current value is the current value of the data drive circuit driving a plurality of data lines simultaneously based on a preset data signal. In some embodiments, the preset data signal can be generated by the main control module 40 in the above-mentioned embodiments, and the data drive circuit 20 in the above-mentioned embodiments can generate a gray scale voltage or current based on the preset data signal. The pixel units (specifically, a whole row of pixel units) related to each gate line 11 can be charged by a plurality of data lines 12. In some embodiments, the preset data signal or the preset data signal can be stored in the display panel 100.

[0048] In some embodiments, the main control module 40 can provide a scanning signal to the gate drive circuit 30 and a preset data signal to the data drive circuit 20 based on preset image data. The scanning signal can include the preset scanning strategy in step S201. In some embodiments, the preset image data can be stored in the display panel 100. In some embodiments, the preset scanning strategy can be defined by the circuit setting in the data drive circuit 20.

[0049] Please refer to Figure 1 , one channel of the data driving circuit 20 corresponds to one data line 12, which is used to control the data voltage of a column of sub-pixel units, and when a gate line 11 is scanned, multiple data lines 12 will be output due to the gate line 11, at this time, the voltage and current for charging the pixel units corresponding to the gate line 11 are provided. Under the preset image data, each gate line 11 is scanned, and the current value of the data driving circuit 20 for simultaneously driving multiple data lines 12 based on the preset data signal should be constant.

[0050] If a gate line 11 and / or the circuit related to the gate line 11 fails, it will cause at least part of the pixel units corresponding to the gate line 11 to be unable to be charged by the data driving circuit 20 based on the preset data signal, and further, the current value of the data driving circuit 20 for simultaneously driving multiple data lines 12 based on the preset data signal will change.

[0051] If a gate line 11 and / or the circuit related to the gate line 11 fails, it will cause the pixel units corresponding to the gate line 11 to be unable to be charged by the data driving circuit 20 based on the preset data signal, and further, cause the dark line problem, and further, cause the current value of the data driving circuit 20 for simultaneously driving multiple data lines 12 based on the preset data signal to change.

[0052] If a gate line 11 and / or the circuit related to the gate line 11 fails, it will cause the pixel units corresponding to the gate line 11 to be charged by the data driving circuit 20 based on the preset data signal, but the charging is insufficient, and further, cause the weak line problem, and further, cause the current value of the data driving circuit 20 for simultaneously driving multiple data lines 12 based on the preset data signal to change.

[0053] In some embodiments, the current value can be an average current value, or a maximum instantaneous current value, and of course, can be a current value determined according to other rules.

[0054] In some embodiments, the current value can be measured by a current and / or voltage measuring device. The current and / or voltage measuring device can be a technical solution known in the art, or a device or circuit disclosed before this application. In some embodiments, it can be performed by the master module 40 and realized by the current and / or voltage setting under the control of the master module 40.

[0055] Based on this, it can be determined whether a failure occurs based on the current value, and further, the gate line and / or the circuit related to the gate line where the failure occurs can be locked, and further, the troubleshooting efficiency can be improved, and the basis for subsequent repair can be provided.

[0056] Step S203: generating fault information in response to the result that the current value is less than the first current threshold.

[0057] The first current threshold is a current value of the data driving circuit driving the plurality of data lines when a row of pixel units corresponding to a gate line is all lightened. The first current threshold can be adjusted based on preset data signals or based on preset image data. In addition, when the image corresponding to the preset image data is not a pure color image, the first current threshold can form a corresponding relationship with each row of pixel units, that is, each row of pixel units corresponds to a first current threshold, and the first current threshold corresponding to different rows of pixel units can be different, of course, it can also be the same. Furthermore, when the image corresponding to the preset image data is a pure color image, the first current threshold corresponding to different rows of pixel units is the same. In some embodiments, the first current threshold can be stored in the display panel 100.

[0058] When the current value is less than the first current threshold, it indicates that at least part of the row of pixel units corresponding to the currently scanned gate line is not lightened by the data line, resulting in a decrease in the current value of the data driving circuit 20 driving the plurality of data lines 12 based on the preset data signals, and thus it can be determined that the currently scanned gate line and / or the circuit related to the gate line has a fault.

[0059] In some embodiments, the fault information can be used to remind the user that the currently scanned gate line has a fault. The fault information can be displayed through sound, warning light or display screen, etc., to facilitate the user to find it.

[0060] In some embodiments, the fault information can also be displayed based on the lightening of the row of pixel units corresponding to the currently scanned gate line, or the row of pixel units adjacent to the row of pixel units, or the specific row of pixel units, or the display screen displays a specific image containing the fault information.

[0061] The fault information can be used to display the location of the fault, thereby facilitating the user to locate, to provide a basis for subsequent repair. In some embodiments, the fault information can include location information of the fault, such as the gate line row number, and can also include circuit information of the fault, such as gate line disconnection, gate driving circuit fault or gate driving circuit and gate line connection fixation, etc., and can also include repair method prompt, so that the user can repair the fault based on the repair method prompt, and even can include other, not described here.

[0062] In some embodiments, step S203 can be performed by the master control module 40 and / or the gate driving circuit 30, and can also be performed by other electronic devices in the display panel 100. In some embodiments, the fault information can be generated by the master control module 40 and / or the gate driving circuit 30, and can also be generated by other electronic devices in the display panel 100.

[0063] Step S204: repairing based on the fault information.

[0064] With the prompt of the fault information, the location of the fault can be located in time, and then the repairing is completed. With the cooperation of step S203, the automatic detection of the fault can be realized, the troubleshooting efficiency is improved, and the repairing efficiency is improved.

[0065] When repairing and eliminating the fault corresponding to the fault information, the technical solution known in the art can be used for repairing, or the repairing method known before the filing date of the present application can be used for repairing, which is not described in detail.

[0066] In some embodiments, the repairing process can be realized by the user, for example, the user sets and connects the circuit based on the fault type, and further controls the repaired display panel 100 by the host module 40 to realize the display.

[0067] In some embodiments, the repairing process can be realized by the host module 40, for example, the host module 40 selects and turns on the circuit preset in the display panel 100 based on the fault type, and further controls the repaired display panel 100 by the host module 40 to realize the display.

[0068] It can be understood that the preset scanning strategy in the above repairing method can be determined and / or controlled by the user, and the host module 40 performs line-by-line scanning or scanning of a specific line under the determination and / or control of the user, so that the user can determine the fault information according to his own needs.

[0069] In addition, when scanning the gate lines one by one, the above repairing method can obtain the current value of the data driving circuit based on the preset data signal for simultaneously driving multiple data lines, and determine whether a fault occurs through the current value, and further lock the gate line and / or the circuit related to the gate line where the fault occurs, thereby improving the troubleshooting efficiency and providing a basis for subsequent repair.

[0070] Furthermore, after repairing and eliminating the fault corresponding to the fault information, the above repairing method can be used again for detection, so as to further troubleshoot the fault.

[0071] Step S202 is the related current value obtained during the execution of step S201, and step S203 is also executed during the execution of step S201, and then, when the fault information is generated, the execution of step S201 is stopped at the same time, that is, before and after step S203, the step of stopping scanning the gate lines one by one according to the preset scanning strategy in response to the result that the current value is less than the first current threshold can also be included.

[0072] Please refer to Figure 3 ,Figure 3 This is a flowchart of a repair method in some embodiments of the present application. Before step S203, the method may include:

[0073] Step S301: In response to scanning a gate line, the count variable, which was initially set to 0, is incremented by 1.

[0074] Step S301 can be executed during the execution of step S201, after step S202, or before step S202.

[0075] Step S203 may include:

[0076] Step S302: Output a count variable in response to the result that the current value is less than the first current threshold.

[0077] By counting, faulty gate lines can be located, facilitating subsequent troubleshooting and repair by the user, thus improving troubleshooting and repair efficiency. Furthermore, in some embodiments, the fault information may include the number of rows (also referred to as "number of lines") of the currently scanned gate line in a preset scanning strategy. Of course, the fault information may also include other information or information displayed in other forms, and is not limited to these.

[0078] In some embodiments, steps S301 and / or S203 may be performed by the main control module 40. In some embodiments, the main control module 40 may include a counter, which may then be used for counting. In some embodiments, the counter may not be part of the main control module 40, but rather part of the display panel 100, which may then be used for counting, for example, by a counter on the display panel 100.

[0079] Step S204 may include:

[0080] Step S303: Locate and repair the gate line based on the count variable.

[0081] Other methods can also be used for counting. For example, see [link to relevant documentation]. Figure 4 , Figure 4 This is a flowchart of a repair method in some embodiments of the present application. Before step S203, the method may include:

[0082] Step S401: Increment the count variable, which was initially set to 0, by 1 in response to the result that the current value is greater than or equal to the first current threshold.

[0083] Step S203 may include:

[0084] Step S402: Output a count variable in response to the result that the current value is less than the first current threshold.

[0085] Step S204 may include:

[0086] Step S403: positioning and repairing the gate line based on the counting variable.

[0087] In some embodiments, step S401 can be performed by the master module 40.

[0088] In some embodiments, as shown in FIG. 1, one end of the gate line 11 is electrically connected to the gate drive circuit 30, and thus step S203 can further include: Figure 1

[0089] Step S404: generating fault information that the gate drive circuit is disconnected from the gate line and / or fault information that the gate drive circuit is faulty in response to the result that the current value is equal to 0.

[0090] When the current value is equal to 0, it indicates that none of the pixel units in the row corresponding to the currently scanned gate line is lit by the plurality of data lines, and it can be determined that the fault information that the gate drive circuit is disconnected from the gate line and / or the fault information that the gate drive circuit is faulty, resulting in that the gate line does not flow the current and / or voltage that controls the conduction of the circuit path between the data line 12 and the pixel unit.

[0091] In some embodiments, the current value equal to 0 also means that there is a dark line fault.

[0092] In some embodiments, referring to Figure 5 , Figure 5 FIG. 2 is a structural schematic diagram of a display panel 100 in some embodiments of the present application. Both ends of the plurality of gate lines 11 are electrically connected to the gate drive circuit 30.

[0093] Thus, step S203 can include:

[0094] Step S406: generating fault information that the gate drive circuit is disconnected from both ends of the gate line and / or fault information that the gate drive circuit is faulty in response to the result that the current value is equal to 0.

[0095] When the current value is equal to 0, it indicates that none of the pixel units in the row corresponding to the currently scanned gate line is lit by the plurality of data lines, and it can be determined that the fault information that the gate drive circuit is disconnected from both ends of the gate line and / or the fault information that the gate drive circuit is faulty, resulting in that the gate line does not flow the current and / or voltage that controls the conduction of the circuit path between the data line 12 and the pixel unit.

[0096] In some embodiments, the current value equal to 0 also means that there is a dark line fault.

[0097] ​Step S407: in response to the result that the current value is less than or equal to the second current threshold value and greater than 0, generating the fault information of the fault of the gate drive circuit on one side of the gate drive circuit (for example Figure 5 the fault information of the fault of the gate drive circuit 30 on the left side or the fault information of the fault of the gate drive circuit 30 on the right side) and / or the fault information of the disconnection of the gate drive circuit and one end of the gate line (for example Figure 5 the fault information of the disconnection of the gate drive circuit 30 on the left side and one end of the gate line 11 or the fault information of the disconnection of the gate drive circuit 30 on the right side and the other end of the gate line 11).

[0098] The first current threshold value can include the second current threshold value.

[0099] When the current value is less than or equal to the second current threshold value and greater than 0, it indicates that a weak line fault occurs in a row of pixel units corresponding to the currently scanned gate line, and then the fault information of the disconnection of the gate drive circuit on one side and one end of the gate line can be determined, and only the gate drive circuit on the other side provides the current at the other end of the gate line. Since the gate drive signal on one side is faulty, the current in this row of pixels can only rely on the normal gate drive signal on the other side for driving. The end of the row of pixels far away from the normal gate drive signal on one side will cause weak light due to weak driving current, and compared with the surrounding rows, the row presents weak brightness, that is, a weak line. In addition, the fault information of the fault of the gate drive circuit on one side can also be determined, and only the gate drive circuit on the other side provides the current at the other end of the gate line, resulting in a weak line in the row. The specific reason for the formation of the weak line will not be described here.

[0100] Next, a repairing method of a display panel is described. The method can include the repairing method in the above embodiments, that is, after the fault information is generated, the fault corresponding to the fault information in the display panel is repaired based on the fault information.

[0101] Please refer to Figure 6 , Figure 6 which is a structural schematic diagram of the repairing method in some embodiments of the present application. Step S204 (for example, steps S303, S403, etc.) can include:

[0102] Step S601: generating a gate compensation signal of the gate line corresponding to the fault information;

[0103] When repairing the fault corresponding to the fault information, the repair line can be directly led to the gate line corresponding to the fault information, and can not pass through the gate drive circuit 30 to lead the repair line. Further, the gate compensation signal can also be directly generated and transmitted to the gate line corresponding to the fault information through the repair line to repair the fault. Among them, the gate compensation signal can be generated without passing through the gate drive circuit 30, and the signal flowing through the gate line corresponding to the fault information when the aforementioned fault does not occur can be consistent with the gate compensation signal. Further, the display panel can be made to display normally after repair.

[0104] In some embodiments, the repair line can be pre-installed in the display panel 100. When repairing, the repair line is connected so that the repair line is electrically connected to the gate line corresponding to the fault information.

[0105] In some embodiments, when the gate drive circuit and the gate line are disconnected and / or the gate drive circuit fails, as shown in Figure 10 The repair line 70 can be pre-installed on the side of the display part 10 close to the gate drive circuit 30. When repairing, the repair line 70 is connected so that the repair line 70 is electrically connected to the gate line 11 corresponding to the fault information. Of course, the position of the pre-installed repair line 70 in the display panel 100 can be adjusted based on the structural design of the display panel 100 by those skilled in the art, and is not limited to the embodiments listed here.

[0106] In some embodiments, when one side of the gate drive circuit fails and / or the gate drive circuit and the gate line are disconnected at one end, as shown in Figure 11 The repair line 70 can be pre-installed on the side of the display part 10 close to the left side of the gate drive circuit 30 and on the side of the display part 10 close to the right side of the gate drive circuit 30. When repairing, the repair line 70 is connected so that the repair line 70 is electrically connected to the gate line 11 corresponding to the fault information. Of course, the position of the pre-installed repair line 70 in the display panel 100 can be adjusted based on the structural design of the display panel 100 by those skilled in the art, and is not limited to the embodiments listed here.

[0107] It can be understood that the repair method can not be limited to the method listed here, but can also include other methods as long as the display panel can display normally, which will not be described in detail.

[0108] In some embodiments, the repair line can be led from the master control module 40 in the above-mentioned embodiments, and the gate compensation signal can be generated by the master control module 40.

[0109] In some embodiments, step S601 can include generating a gate compensation signal corresponding to the gate line of the count variable.

[0110] Step S602: Deliver the gate compensation signal to the gate line corresponding to the fault information through the repair line.

[0111] In some embodiments, step S602 can include: delivering the gate compensation signal to the gate line corresponding to the count variable through the repair line.

[0112] In some embodiments, when the gate line 11 is abnormal, such as broken, it causes display abnormality, resulting in dark lines or broken lines. The abnormal gate line 11 is automatically found, and the corresponding gate compensation signal is determined. The gate compensation signal is delivered to the faulty gate line 11 through the repair line, thereby reducing the delay of compensation.

[0113] Referring to Figure 7 , Figure 7 is a structural schematic diagram of a display panel 100 in some embodiments of the present application. The display panel 100 can include the display part 10, the data driving circuit 20, the gate driving circuit 30, and the master control module 40 in the above-mentioned embodiments. The display part 10 can be electrically connected with the data driving circuit 20 and the gate driving circuit 30. The master control module 40 can be electrically connected with the data driving circuit 20 and the gate driving circuit 30. The display part 10 can serve as a display area of the display panel 100, and can display an image corresponding to image data received by the master control module 40 under the cooperation control of the data driving circuit 20 and the gate driving circuit 30.

[0114] In some embodiments, the display panel 100 can further include a power supply module 50 and a data measurement circuit 60. The data measurement circuit 60 is electrically connected between the power supply module 50 and the data driving circuit 20, and is electrically connected with the master control module 40. The master control module 40 is configured to acquire a current value corresponding to each gate line 11 based on the data measurement circuit 60, and is configured to generate a fault information in response to a result that the current value is less than a first current threshold. The current value is a current value of the data driving circuit 20 for simultaneously driving a plurality of data lines 12 based on a preset data signal. The data measurement circuit 60 can be the current and / or voltage measurement device in the above-mentioned embodiments.

[0115] Referring to Figure 8 , Figure 8 is a partial structural schematic diagram of the display panel 100 in some embodiments of the present application. The data measurement circuit 60 can include a detection resistor 61 and a subtractor 62. The detection resistor 61 is electrically connected between the power supply module 50 and the data driving circuit 20. The input end of the subtractor 62 is electrically connected between the two ends of the detection resistor 61, and the output end is electrically connected with the master control module 40.

[0116] Referring to Figure 8 and Figure 9 , Figure 9 is Figure 8The subtracter 62 in the shown embodiment is in the structure diagram of some embodiments. In which, a detection resistor 61 is placed in the path of the power supply module 50 to the data driving circuit 20 power supply, one end voltage of the detection resistor 61 is recorded as Vin1, the other end is recorded as Vin2, the positive polarity input end of the operational amplifier OP is the voltage Vin2 obtained by voltage division through two resistors R1 and R2, and the negative polarity input end of the operational amplifier OP is the difference between the actual output voltage Vin1 and the output Vout of the operational amplifier OP.

[0117] In some embodiments, the resistors R1, R2, R3 and R4 can be the same, of course, in other embodiments, they can also be different, and can also be the same, and can be set according to the needs, in this embodiment, only for simplifying the process of measuring the current value.

[0118] The voltage V0+ of the positive polarity input end of the operational amplifier OP is (Vin2) / 2. The voltage V0- of the negative polarity input end of the operational amplifier OP is (Vin1+Vout) / 2, and according to the characteristics of OP, V0+ = V0-, so (Vin2) / 2 = (Vin1+Vout) / 2.

[0119] That is, Vin2 = Vin1+Vout, and finally Vout = Vin2-Vin1, so Vout is the voltage difference between Vin1 and Vin2, and the current value I = (Vin1-Vin2) / RA, RA is the detection resistor 61.

[0120] Here, because the current cannot be directly detected, the current value is obtained by detecting the voltage. The voltage difference Vout is finally given to the main control module 40. The corresponding steps in the above repair method are performed by the main control module 40.

[0121] In some embodiments, the main control module 40 is used to repair based on fault information. For example, the main control module 40 performs circuit selection and conduction including repair lines, and provides signals through the repair lines. For example, after the user completes the repair line setting, the main control module 40 provides signals through the repair lines.

[0122] In some embodiments, the counter in the main control module 40 can count, when a first current threshold is given to the counter, when it is greater than the first current threshold, the counter counts 1, when an abnormal voltage difference is detected (less than or equal to the first current threshold), the counting is stopped, and the counting result is fed back, at this time, the counting result is the number of abnormal row pixel units (the number of gate lines 11), which can be directly seen through the read-back.

[0123] In some embodiments, the master module 40 is configured to, in response to the operation of scanning one of the gate lines 11, increment a count variable with an initial value of 0; and output the count variable in response to a result that the current value is less than the first current threshold.

[0124] In some embodiments, the master module 40 is configured to, in response to a result that the current value is greater than or equal to the first current threshold, increment a count variable with an initial value of 0; and output the count variable in response to a result that the current value is less than the first current threshold.

[0125] In some embodiments, the master module 40 is configured to locate and repair the gate line based on the count variable.

[0126] In some embodiments, the master module 40 is configured to, in response to a result that the current value is equal to 0, generate fault information that the gate driving circuit 30 is disconnected from the gate line 11 and / or fault information that the gate driving circuit 30 is faulty.

[0127] In some embodiments, as shown in Figure 5 , both ends of the plurality of gate lines 11 are electrically connected to the gate driving circuit 30. Please refer to Figure 5 and Figure 7 , the master module 40 is configured to, in response to a result that the current value is equal to 0, generate fault information that the gate driving circuit 30 is disconnected from the gate line 11 and / or fault information that the gate driving circuit 30 is faulty; and in response to a result that the current value is less than or equal to the second current threshold and greater than 0, generate fault information that the gate driving circuit 30 on one side is faulty and / or fault information that the gate driving circuit 30 is disconnected from one end of the gate line 11.

[0128] Please refer to Figure 10 , Figure 10Fig. 1 is a structural schematic diagram of a display panel 100 in some embodiments of the present application. The display panel 100 can also include a repair line 70, which is electrically connected to the main control module 40 and to the gate line 11 corresponding to the fault information. Specifically, the repair line 70 is connected to a part of the gate line 11 that is not driven by the gate drive circuit 30 (this part of the gate line 11 does not conduct current and / or voltage between the control data line 12 and the pixel unit, or has a higher delay in conducting the current or voltage or a larger voltage drop). The main control module 40 is configured to generate a gate compensation signal for the gate line 11 corresponding to the fault information, and transmit the gate compensation signal to the gate line 11 corresponding to the fault information through the repair line 70 to achieve repair, so that the part of the gate line 11 that is not driven by the gate drive circuit 30 can be driven by the main control module 40, or the part of the gate line 11 that does not conduct current and / or voltage between the control data line 12 and the pixel unit can conduct the gate compensation signal, or the part of the gate line 11 that has a higher delay in conducting the current or voltage or a larger voltage drop can reduce the delay and voltage drop when conducting the gate compensation signal.

[0129] In some embodiments, the repair line 70 can be located on the side of the display part 10 close to the gate drive circuit 30. In some embodiments, the repair line 70 can be pre-installed in the display panel 100. During repair, the repair line 70 is electrically connected to the gate line 11 corresponding to the fault information.

[0130] In some embodiments, taking the above-mentioned fault in the G3 gate line in the gate line 11 as an example, the G3 gate line can be short-circuited with the repair line 70 by laser (a mature solution at present), so that the repair line 70 is connected to the display part 10 at this time. After the main control module 40 learns the counting result, it directly outputs a gate compensation signal corresponding to the timing of the G3 gate line through the repair line 70. Because the internal circuit of the display panel is designed such that the data measurement circuit 60 is adjacent to the main control module 40, the main control module 40 can respond quickly and can sufficiently solve the problem of time delay, and is more consistent with the waveform of the original output signal of the G3 gate line, and can also maintain consistency with the charging of other rows as much as possible.

[0131] Please refer to Figure 11 , Figure 11Figure 1 is a structural schematic diagram of a display panel 100 in some embodiments of the present application. There can be two repair lines 70, and two gate drive circuits 30. One repair line 70 can be located on one side of the display portion 10 close to one gate drive circuit 30 (for example, the gate drive circuit 30 on the left side of the display portion 10), and the other repair line 70 can be located on the other side of the display portion 10 close to the other gate drive circuit 30 (for example, the gate drive circuit 30 on the right side of the display portion 10). In some embodiments, the two repair lines 70 can be pre-installed in the display panel 100. During repair, the repair lines 70 are connected to the gate lines corresponding to the fault information.

[0132] In some embodiments, taking the weak line problem of the G2 gate line in the gate lines 11 as an example, specifically, Figure 11 the gate drive circuit 30 on the right side of the display portion 10 fails, or the gate drive circuit 30 on the right side of the display portion 10 is disconnected from the G2 gate line in the gate lines 11, the G2 gate line can be short-circuited with the repair line 70 on the right side of the display portion 10 by laser. Figure 11 At this time, the repair line 70 is connected to the display portion 10. After the master control module 40 learns the counting result, it directly outputs a gate compensation signal corresponding to the timing of the G2 gate line through the repair line 70. Due to the design of the internal circuit of the display panel, for example, the data measurement circuit 60 is adjacent to the master control module 40, so that the master control module 40 can quickly respond, and the problem of time delay can be fully solved, which is more consistent with the waveform of the original output signal of the G2 gate line, and the charging of other rows can also be as consistent as possible.

[0133] Please refer to Figure 12 , Figure 12 Figure 1 is a structural schematic diagram of a display panel 100 in some embodiments of the present application. There can be two repair lines 70, and two gate drive circuits 30. One repair line 70 can be located on one side of the display portion 10 close to one gate drive circuit 30 (for example, the gate drive circuit 30 on the left side of the display portion 10), and the other repair line 70 can be located on the other side of the display portion 10 close to the other gate drive circuit 30 (for example, the gate drive circuit 30 on the right side of the display portion 10). In some embodiments, the two repair lines 70 can be pre-installed in the display panel 100. During repair, the repair lines 70 are connected to the gate lines corresponding to the fault information.

[0134] In some embodiments, taking the dark line of the G4 gate line in the gate lines 11 as an example, specifically, Figure 11 the gate drive circuits 30 on both sides of the display portion 10 fail, or the gate drive circuits 30 on both sides of the display portion 10 are disconnected from both ends of the G4 gate line in the gate lines 11, the G4 gate line can be short-circuited with the repair lines 70 on both sides of the display portion 10 by laser. Figure 11When the repair line 70 on both sides of the display part 10 is short-circuited, the repair line 70 is connected to the display part 10 at this time. After the main control module 40 learns the counting result, it directly outputs a gate compensation signal corresponding to the timing of the G4 gate line through the repair line 70. Because the design of the internal circuit of the display panel, for example, the data detection circuit 60 is adjacent to the main control module 40, the main control module 40 can quickly respond, and the problem of time delay can be solved sufficiently, which is more consistent with the waveform of the originally output signal of the G4 gate line, and the charging of other rows can also be kept consistent as much as possible.

[0135] In some embodiments, the main control module 40 is configured to generate a gate compensation signal corresponding to the gate line 11 of the counting variable; and transmit the gate compensation signal to the gate line 11 corresponding to the counting variable through the repair line 70.

[0136] In some embodiments, the repair line 70 can also refer to the above-mentioned repair method for the repair line, which will not be repeated here.

[0137] The display panel 100 integrates fault detection and signal compensation, detects the condition of the gate line 11, confirms the position of the abnormal gate line 11, and then repairs and compensates the broken line and dark line of the gate line 11, which solves the problems of difficult positioning and time delay, and has simple circuit, easy realization, low cost, normal use after repair, improved product utilization, and solved positioning and repair problems in the industry.

[0138] Next, a detection device is described, which can be used to detect the above-mentioned faults in the display panel 100 in the above-mentioned embodiments.

[0139] Please refer to Figure 13 , Figure 13Fig. 1 is a structural schematic diagram of a display panel in some embodiments of the present application. The display panel 100 can include a power supply module 50, a data acquisition circuit 60, and a master control module 40. The data acquisition circuit 60 can be electrically connected between the power supply module 50 and a data driving circuit 20 of the display panel 100, and can be electrically connected to the master control module 40. The master control module 40 can be electrically connected to the data driving circuit 20 and a gate driving circuit 30 of the display panel 100 to realize the functions of the master control module 40 in the display panel 100. For details, refer to the structure and arrangement of the master control module 40 in the above embodiments, which will not be described here. The power supply module 50 can realize the functions of the power supply module 50 in the display panel 100. For details, refer to the structure and arrangement of the power supply module 50 in the above embodiments, which will not be described here. The data acquisition circuit 60 can realize the functions of the data acquisition circuit 60 in the display panel 100. For details, refer to the structure and arrangement of the data acquisition circuit 60 in the above embodiments, which will not be described here.

[0140] In some embodiments, the display panel based on the detection device 200 after repair can not include the detection device, i.e., the display panel can not include the data acquisition circuit, and can include the repair line. Further, the display panel can include the gate driving circuit, the data driving circuit, and the display part, the display part being electrically connected to the gate driving circuit and the data driving circuit, the display part including a plurality of gate lines and a plurality of data lines, one end or both ends of the gate line being electrically connected to the gate driving circuit, the data line being electrically connected to the data driving circuit; wherein the display panel further includes the repair line and the master control module, the repair line being electrically connected to the master control module and being electrically connected to the gate line corresponding to the fault information, the master control module being used to generate the gate compensation signal of the gate line corresponding to the fault information, and being used to transmit the gate compensation signal to the gate line corresponding to the fault information through the repair line.

[0141] Next, a detection device or a repair device is described, which can be used to perform at least part of the steps corresponding to the repair method in the above embodiments.

[0142] Please refer to Figure 14 , Figure 14This is a schematic diagram of the structure of a detection or repair device according to some embodiments of this application. The detection or repair device 300 may include a processor 301 and a memory 302 connected to the processor 301. The processor 301 may also be referred to as a CPU (Central Processing Unit). The processor 301 may be an integrated circuit chip with signal processing capabilities. The processor 301 may also be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. The general-purpose processor may be a microprocessor or any conventional processor, etc.

[0143] In some embodiments, the processor 301 may be the main control module 40 or the main control module 203 in the above embodiments.

[0144] The memory 302 is used to store the program data required for the processor 301 to run.

[0145] The processor 301 is also used to execute the program data stored in the memory 302 to implement the steps corresponding to the above-mentioned repair method.

[0146] In some embodiments, the detection device or repair device 300 may be the display panel 100 in the above embodiments or the detection device 200 in the above embodiments.

[0147] In some embodiments, the display panel repaired based on the detection device or repair device 300 may not include the detection device or repair device 300, that is, the display panel may not include a data acquisition circuit, but may include repair lines. Furthermore, the display panel may include a gate driving circuit, a data driving circuit, and a display section. The display section is electrically connected to the gate driving circuit and the data driving circuit. The display section includes multiple gate lines and multiple data lines. One or both ends of the gate lines are electrically connected to the gate driving circuit, and the data lines are electrically connected to the data driving circuit. The display panel also includes repair lines and a main control module. The repair lines are electrically connected to the main control module and to the gate lines corresponding to the fault information. The main control module generates gate compensation signals corresponding to the gate lines of the fault information and transmits these gate compensation signals to the gate lines corresponding to the fault information via the repair lines.

[0148] The following describes a computer-readable storage medium; please refer to [link / reference]. Figure 15 , Figure 15 This is a schematic diagram of the structure of a computer-readable storage medium in some embodiments of this application. The computer-readable storage medium 400 internally stores program instructions 401, which are executed to implement the steps corresponding to the above-described repair method.

[0149] The computer readable storage medium 400 in the embodiment can be, but is not limited to, a U disk, an SD card, a PD optical drive, a mobile hard disk, a large-capacity floppy disk drive, a flash memory, a multimedia memory card, a server, etc.

[0150] In some embodiments, the computer readable storage medium 400 can be used in the display panel in the above embodiments, can be used in the detection device 200 in the above embodiments, and can be used in the detection device or the repair device 300 in the above embodiments.

[0151] In addition, when the above functions are realized in the form of software functions and sold or used as independent products, the functions can be stored in a mobile terminal readable storage medium, that is, the application also provides a storage device storing program data, the program data can be executed to realize the method of the above embodiments, and the storage device can be, for example, a U disk, an optical disk, a server, etc. That is, the application can be embodied in the form of a software product, which includes a plurality of instructions for causing an intelligent terminal to execute all or part of the steps of the method described in each embodiment.

[0152] In some embodiments, the computer readable storage medium 400 can be the memory 302 in the above embodiments, and the program instructions 401 can also be the program data in the above embodiments.

[0153] In the several embodiments provided in the present application, it should be understood that the disclosed methods and devices can be implemented in other ways. For example, the device embodiments described above are merely illustrative, and the division of the modules or units is merely a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed.

[0154] The units described as separate components can or can not be physically separate, and the components displayed as units can or can not be physical units, that is, they can be located in one place, or can be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the present embodiment.

[0155] In addition, each functional unit in each embodiment of the present application can be integrated into a processing unit, or each unit can exist physically independently, or two or more units can be integrated into one unit. The integrated unit can be realized in the form of hardware or in the form of a software functional unit.

[0156] The above merely describes the embodiments of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, which is made according to the content of the present application specification and drawings, is also included in the patent protection scope of the present application.

Claims

1. A method for repairing a display panel, the display panel comprising a gate driving circuit, a data driving circuit, and a display portion, the display portion being electrically connected to the gate driving circuit and the data driving circuit, the display portion comprising a plurality of gate lines and a plurality of data lines, one end of the gate line being electrically connected to the gate driving circuit, the data line being electrically connected to the data driving circuit, the method comprising: sequentially scanning the gate lines according to a preset scanning strategy; obtaining a current value corresponding to each of the gate lines, the current value being a current value of the data driving circuit simultaneously driving the plurality of data lines based on a preset data signal; and generating fault information in response to a result that the current value is less than a first current threshold. The method further comprises: repairing based on the fault information. Before the generating fault information in response to the result that the current value is less than the first current threshold, the method further comprises: in response to an operation of scanning one of the gate lines, incrementing a count variable with an initial value of 0 by 1; or, in response to a result that the current value is greater than or equal to the first current threshold, incrementing the count variable with the initial value of 0 by 1. The generating fault information in response to the result that the current value is less than the first current threshold comprises: outputting the count variable in response to the result that the current value is less than the first current threshold. The generating fault information in response to the result that the current value is less than the first current threshold comprises: generating fault information that the gate driving circuit is disconnected from both ends of the gate line and / or fault information that the gate driving circuit is faulty in response to a result that the current value is equal to 0. The other end of the gate line is electrically connected to the gate driving circuit.

2. The repair method of claim 1, wherein The generating fault information in response to the result that the current value is less than the first current threshold comprises: generating fault information that the gate driving circuit is disconnected from both ends of the gate line and / or fault information that the gate driving circuit is faulty in response to a result that the current value is equal to 0. The generating fault information in response to the result that the current value is less than the first current threshold comprises: generating fault information that the gate driving circuit is disconnected from one end of the gate line and / or fault information that the gate driving circuit is faulty in response to a result that the current value is less than or equal to a second current threshold and greater than 0.

3. The repair method of claim 1, wherein The repairing based on the fault information comprises: generating a gate compensation signal corresponding to the gate line of the fault information; and delivering the gate compensation signal to the gate line corresponding to the fault information through a repair line. The display panel comprises a gate driving circuit, a data driving circuit, and a display portion, the display portion being electrically connected to the gate driving circuit and the data driving circuit, the display portion comprising a plurality of gate lines and a plurality of data lines, one end or both ends of the gate line being electrically connected to the gate driving circuit, the data line being electrically connected to the data driving circuit. ​ ​ ​ 4. The repair method according to any one of claims 1 to 3, characterized in that, ​ ​ 5. The repair method according to any one of claims 1 to 3, characterized in that, ​ ​ ​ ​ 6. The method of repair of claim 2, wherein, ​ ​ ​ 7. A display panel, characterized by, ​ The display panel further comprises a repair line and a master control module, the repair line is electrically connected with the master control module and the gate line corresponding to the fault information, the master control module is used for generating a gate compensation signal of the gate line corresponding to the fault information, and is used for transmitting the gate compensation signal to the gate line corresponding to the fault information through the repair line. The display panel further comprises a power supply module and a data measurement circuit, the data measurement circuit is electrically connected between the power supply module and the data driving circuit, and is electrically connected with the master control module, the master control module is used for scanning the gate lines one by one according to a preset scanning strategy, is used for acquiring a current value corresponding to each of the gate lines based on the data measurement circuit, and is used for generating the fault information in response to a result that the current value is less than a first current threshold, the current value being a current value of the data driving circuit for simultaneously driving the plurality of data lines based on a preset data signal.

8. The display panel of claim 7, wherein, The data measurement circuit comprises a detection resistor and a subtractor, the detection resistor is electrically connected between the power supply module and the data driving circuit, and input ends of the subtractor are electrically connected between the detection resistor, and an output end of the subtractor is electrically connected with the master control module.

9. The display panel of any of claims 7-8, wherein, The master control module is used for increasing a count variable with an initial value of 0 by 1 in response to an operation of scanning one of the gate lines or a result that the current value is greater than or equal to the first current threshold, and is used for outputting the count variable in response to a result that the current value is less than the first current threshold. The repair line is electrically connected to the gate line corresponding to the count variable.

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