CN114442390B - Maintenance method of array substrate driving circuit, driving circuit and display device - Google Patents
Maintenance method of array substrate driving circuit, driving circuit and display device Download PDFInfo
- Publication number
- CN114442390B CN114442390B CN202210276932.3A CN202210276932A CN114442390B CN 114442390 B CN114442390 B CN 114442390B CN 202210276932 A CN202210276932 A CN 202210276932A CN 114442390 B CN114442390 B CN 114442390B
- Authority
- CN
- China
- Prior art keywords
- connecting wire
- disconnected
- row driving
- driving unit
- signal end
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/136259—Repairing; Defects
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3674—Details of drivers for scan electrodes
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0264—Details of driving circuits
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
- G09G2330/08—Fault-tolerant or redundant circuits, or circuits in which repair of defects is prepared
Abstract
Disclosed are a method for maintaining a driving circuit of an array substrate, the driving circuit and a display device, wherein the driving circuit comprises: the output signal end of each row of driving units is connected with the input signal end of the corresponding row of driving units through a first connecting wire, and the output signal end of each row of driving units is connected with the reset signal end of the corresponding other row of driving units through a second connecting wire; the first connecting wire and at least one second connecting wire are arranged in a crossing way and form a crossing point; the method comprises the following steps: detecting that the end part of the first connecting wire, which is connected with the output signal end, is disconnected from the crossing point, and the disconnected first connecting wire is connected with a second connecting wire at the crossing point; and/or the second connecting line is arranged in a crossing way with at least one first connecting line; and detecting that the end part of the second connecting wire connected with the output signal end is disconnected from the crossing point, and connecting the disconnected second connecting wire with one first connecting wire at the crossing point. The method does not need an additional repair auxiliary line, and is convenient to maintain.
Description
Technical Field
The invention belongs to the technical field of display, and particularly relates to a maintenance method of an array substrate driving circuit, the driving circuit and a display device.
Background
At present, an array substrate driving mode (Gate Driver on Array, abbreviated as GOA) in the liquid crystal panel manufacturing industry is generally adopted, and compared with the original gate driver IC function, the driving mode has the advantages of high productivity and low cost, and is more suitable for the market demand of the current narrow-frame or borderless display products. In the GOA technology, GOA units are formed into a grid line scanning driving signal circuit in a cascading mode and are manufactured on a liquid crystal panel array substrate, in the display driving process, the GOA units send scanning driving signals to each row of grid, a TFT structure of a pixel display area of the liquid crystal panel is opened, and data line signals can be normally transmitted to pixel electrodes to display that the panel shines. Under the condition that a GOA unit cascade circuit has a problem, a signal output signal cannot be transmitted to a next unit input signal, and the whole liquid crystal panel is abnormal in full screen display or partial display, so that the yield is reduced. In the maintenance process, an additional repair auxiliary line is required to be added, so that the maintenance is inconvenient, and new defects are easily caused.
Disclosure of Invention
The embodiment of the invention aims to provide a maintenance method of an array substrate driving circuit, the driving circuit and a display device, which are used for solving the problem that the GOA unit cascade circuit is inconvenient to maintain in the maintenance process.
In a first aspect, an embodiment of the present invention provides a method for repairing a driving circuit of an array substrate, where the driving circuit includes:
the array substrate comprises a plurality of cascaded array substrate row driving units, a plurality of array substrate driving units and a plurality of driving units, wherein each row driving unit is provided with an input signal end, an output signal end and a reset signal end, the output signal end of each row driving unit is connected with the input signal end of the corresponding row driving unit through a first connecting wire, and the output signal end of each row driving unit is also connected with the reset signal end of the corresponding other row driving unit through a second connecting wire;
the first connecting wire and at least one second connecting wire are arranged in a crossing way and form a crossing point;
the method comprises the following steps:
if the disconnection between the end part of the first connecting wire, which is connected with the output signal end, and the intersection point is detected, the disconnected first connecting wire is conducted with a second connecting wire at the intersection point position;
and/or
The second connecting wire is crossed with at least one first connecting wire and forms a crossing point;
the method comprises the following steps:
and if the disconnection between the end part of the second connecting wire connected with the output signal end and the intersection point is detected, conducting the disconnected second connecting wire with one first connecting wire at the intersection point position.
Wherein the step of conducting the disconnected first connection line with a second connection line at the intersection point position comprises:
the disconnected first connection line and the second connection line on the row driving unit adjacent to the row driving unit where it is located are conducted at the intersection point position.
Wherein the step of conducting the disconnected second connection line with one of the first connection lines at the intersection point position comprises:
the disconnected second connection line is conducted with the first connection line on the row driving unit adjacent to the row driving unit where it is located at the intersection point position.
Wherein the step of conducting the disconnected first connection line with a second connection line at the intersection point position comprises:
the disconnected first connecting wire and a second connecting wire are connected and conducted at the position of the crossing point through welding; and/or
The step of conducting the disconnected second connection line with a first connection line at the intersection point position comprises:
the disconnected second connecting wire is connected with one first connecting wire at the crossing point position through welding connection.
In a second aspect, an embodiment of the present invention provides an array substrate driving circuit, including:
the array substrate comprises a plurality of cascaded array substrate row driving units, wherein each row driving unit is provided with an input signal end, an output signal end and a reset signal end, the output signal end of each row driving unit is connected with the input signal end of the corresponding row driving unit through a first connecting wire, and the output signal end of each row driving unit is connected with the reset signal end of the corresponding other row driving unit through a second connecting wire;
the first connecting wire is crossed with at least one second connecting wire, the end part of the first connecting wire, which is connected with the output signal end, is disconnected from the crossing point, and the disconnected first connecting wire is communicated with one second connecting wire at the crossing point position; and/or
The second connecting wire is arranged in a crossing way with at least one first connecting wire, the end part of the second connecting wire, which is connected with the output signal end, is disconnected from the crossing point, and the disconnected second connecting wire is conducted with one first connecting wire at the crossing point position.
Wherein the disconnected first connecting line is conducted with a second connecting line on a row driving unit adjacent to the row driving unit where the disconnected first connecting line is located at the crossing point position; and/or
The disconnected second connection line is conducted at the intersection point with the first connection line on the row driving unit adjacent to the row driving unit where it is located.
Wherein at least one row driving unit is arranged between two row driving units connected with the same first connecting line; and/or
At least one row driving unit is arranged between two row driving units connected with the same second connecting line.
The row driving unit is provided with an input circuit connected with the input signal end, an output circuit connected with the output signal end and a reset circuit connected with the reset signal end, wherein the output end of the input circuit is connected with the input end of the output circuit, and the output end of the reset circuit is connected with the input end of the output circuit.
The output signal end of the row driving unit is connected with the input signal end of the corresponding row driving unit positioned at one side of the row driving unit through a first connecting wire, and the output signal end of the row driving unit is connected with the reset signal end of the corresponding row driving unit positioned at the other side of the row driving unit through a second connecting wire.
The disconnected first connecting wire and one second connecting wire are connected and conducted at the position of the crossing point through welding; and/or
The disconnected second connecting wire is connected with one first connecting wire at the crossing point position through welding connection.
In a third aspect, an embodiment of the present invention provides an array substrate, including the array substrate driving circuit described in the foregoing embodiment.
In a fourth aspect, an embodiment of the present invention provides a display panel, including the array substrate described in the foregoing embodiment.
In a fifth aspect, an embodiment of the present invention provides a display device including the display panel described in the above embodiment.
The method for maintaining the array substrate driving circuit provided by the embodiment of the invention comprises the following steps: the array substrate comprises a plurality of cascaded array substrate row driving units, a plurality of array substrate driving units and a plurality of driving units, wherein each row driving unit is provided with an input signal end, an output signal end and a reset signal end, the output signal end of each row driving unit is connected with the input signal end of the corresponding row driving unit through a first connecting wire, and the output signal end of each row driving unit is also connected with the reset signal end of the corresponding other row driving unit through a second connecting wire; the first connecting wire and at least one second connecting wire are arranged in a crossing way and form a crossing point; the method comprises the following steps: if the disconnection between the end part of the first connecting wire, which is connected with the output signal end, and the intersection point is detected, the disconnected first connecting wire is conducted with a second connecting wire at the intersection point position; and/or the second connecting line is arranged to intersect with at least one first connecting line and form an intersection point; the method comprises the following steps: and if the disconnection between the end part of the second connecting wire connected with the output signal end and the intersection point is detected, conducting the disconnected second connecting wire with one first connecting wire at the intersection point position. The broken first connecting wire is connected with one second connecting wire at the crossing point position through maintenance, so that the broken first connecting wire can transmit output signals through the second connecting wire, signals output by the output signal ends connected with the second connecting wire can be transmitted to the broken first connecting wire through the second connecting wire, and then the signals are transmitted to the input signal ends of the corresponding row of driving units through the broken first connecting wire. Or the disconnected second connecting line is conducted with one first connecting line at the position of the crossing point through maintenance, signals output by the output signal end connected with the first connecting line can be transmitted to the disconnected second connecting line through the first connecting line, and then the signals are transmitted to the reset signal end of the corresponding other row of driving units through the disconnected second connecting line. The maintenance method does not need to add an additional repair auxiliary line, is convenient to maintain when the whole liquid crystal panel has abnormal display, does not cause new defects, and improves the product quality.
Drawings
FIG. 1 is a schematic diagram of a GOA unit;
FIG. 2 is a schematic diagram of a signal output of the GOA unit;
FIG. 3 is a schematic diagram of a cascade circuit of GOA units;
FIG. 4 is a schematic diagram illustrating a repair of right side anomalies of Output signals in an array substrate driving circuit;
FIG. 5 is a schematic diagram illustrating a repair of left anomalies in Output signals in an array substrate driving circuit;
FIG. 6 is another schematic diagram illustrating the right side of the Output signal in the array substrate driving circuit;
FIG. 7 is a schematic diagram of a GOA unit with a cascade number of 2;
fig. 8 is a schematic diagram of a cascade open position in which maintenance is not possible.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the invention may be practiced otherwise than as specifically illustrated or described herein. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.
Embodiments of the present invention will be described below with reference to fig. 1 to 8.
The method for maintaining the array substrate driving circuit provided by the embodiment of the invention comprises the following steps: the array substrate comprises a plurality of cascaded array substrate row driving units, wherein each row driving unit is provided with an input signal end, an output signal end and a reset signal end, the output signal end of each row driving unit is connected with the input signal end of the corresponding row driving unit through a first connecting wire, the output signal end of each row driving unit is also connected with the reset signal end of the corresponding other row driving unit through a second connecting wire, and the first connecting wire and the second connecting wire can be used as signal wires for transmitting signals; the first connecting wire and at least one second connecting wire are arranged in a crossing way and form a crossing point; the method comprises the following steps: if the disconnection between the end part of the first connecting wire, which is connected with the output signal end, and the intersection point is detected, the disconnected first connecting wire and a second connecting wire are conducted at the intersection point, for example, the connection can be realized through laser welding connection; and/or the second connecting line is arranged to intersect with at least one first connecting line and form an intersection point; the method comprises the following steps: if the disconnection between the end part of the second connecting wire connected with the output signal end and the intersection point is detected, the disconnected second connecting wire is conducted with one first connecting wire at the intersection point, for example, the connection can be realized through laser welding connection.
According to the maintenance method of the embodiment of the invention, the disconnected first connecting wire is conducted with one second connecting wire at the intersection point, so that the disconnected first connecting wire can transmit output signals through the second connecting wire, signals output by the output signal ends connected with the second connecting wire can be transmitted to the disconnected first connecting wire through the second connecting wire, and then the signals are transmitted to the input signal ends of the corresponding row of driving units through the disconnected first connecting wire. Or the disconnected second connecting line is conducted with one first connecting line at the position of the crossing point through maintenance, signals output by the output signal end connected with the first connecting line can be transmitted to the disconnected second connecting line through the first connecting line, and then the signals are transmitted to the reset signal end of the corresponding other row of driving units through the disconnected second connecting line. The maintenance method does not need to add an additional repair auxiliary line, is convenient to maintain when the whole liquid crystal panel has abnormal display, does not cause new defects, and improves the product quality.
In some embodiments, at least one row driving unit may be disposed between two row driving units connected to the same first connection line. At least one row driving unit may be disposed between two row driving units connected to the same second connection line. The step of conducting the disconnected first connection line with a second connection line at the intersection point position may include:
the disconnected first connecting line and the second connecting line on the row driving unit adjacent to the row driving unit where the disconnected first connecting line is connected at the cross point position, so that the quick connection and the connection are convenient, the output signals of the two row driving units are almost the same, and the signal difference is small.
In other embodiments, the step of conducting the disconnected second connection line with a first connection line at the intersection point may include:
the disconnected second connecting line and the first connecting line on the row driving unit adjacent to the row driving unit where the second connecting line is positioned are conducted at the cross point position, so that quick connection and conduction are facilitated, the output signals of the two row driving units are almost the same, and the signal difference is small.
Alternatively, the step of conducting the disconnected first connection line with one of the second connection lines at the intersection point position may include:
the disconnected first connecting line is connected to a second connecting line at the crossing point by means of a welded connection, for example by means of a laser welded connection. The length of the disconnected first connecting wire and one second connecting wire at the position of the crossing point can be 5um, and the width can be 5um, so that laser melting connection is facilitated.
Alternatively, the step of conducting the disconnected second connection line with one of the first connection lines at the intersection point position may include:
the disconnected second connection line is connected to a first connection line at the intersection point by means of a welded connection, for example by means of a laser welded connection. The length of the disconnected second connecting wire and the first connecting wire at the position of the crossing point can be 5um, and the width can be 5um, so that laser melting connection is facilitated.
The array substrate driving circuit of the embodiment of the invention comprises:
the array substrate comprises a plurality of cascaded array substrate row driving units, wherein each row driving unit is provided with an input signal end, an output signal end and a reset signal end, the output signal end of each row driving unit is connected with the input signal end of the corresponding row driving unit through a first connecting wire, and the output signal end of each row driving unit is connected with the reset signal end of the corresponding other row driving unit through a second connecting wire;
the first connecting wire is crossed with at least one second connecting wire, the end part of the first connecting wire, which is connected with the output signal end, is disconnected from the crossing point, and the disconnected first connecting wire is communicated with one second connecting wire at the crossing point position; and/or
The second connecting wire is arranged in a crossing way with at least one first connecting wire, the end part of the second connecting wire, which is connected with the output signal end, is disconnected from the crossing point, and the disconnected second connecting wire is conducted with one first connecting wire at the crossing point position.
The disconnected first connecting wire is conducted with one second connecting wire at the intersection point, so that the disconnected first connecting wire can transmit output signals through the second connecting wire, signals output by the output signal ends connected with the second connecting wire can be transmitted to the disconnected first connecting wire through the second connecting wire, and then the signals are transmitted to the input signal ends of the corresponding row of driving units through the disconnected first connecting wire. The disconnected second connecting wire is conducted with one first connecting wire at the position of the cross point, signals output by the output signal ends connected with the first connecting wire can be transmitted to the disconnected second connecting wire through the first connecting wire, and then the signals are transmitted to the reset signal ends of the corresponding driving units of the other row through the disconnected second connecting wire. When the first connecting wire or the second connecting wire is disconnected, no additional repair auxiliary wire is needed to be added, and no new defect is caused.
In some embodiments, the disconnected first connection line and the second connection line on the row driving unit adjacent to the row driving unit where it is located are conducted at the intersection point position. The quick connection and conduction are convenient, the output signals of the two row driving units are almost the same, and the signal difference is small.
In other embodiments, the disconnected second connection line is conducted at the intersection point with the first connection line on the row driving unit adjacent to the row driving unit where it is located. The quick connection and conduction are convenient, the output signals of the two row driving units are almost the same, and the signal difference is small.
Optionally, at least one row driving unit is provided between two row driving units connected to the same first connection line. When the first connecting line is disconnected and maintenance is needed, the connection crossing point is conveniently searched from the row driving units arranged between the two row driving units connected by the same first connecting line.
Optionally, at least one row driving unit is arranged between two row driving units connected by the same second connecting line. When maintenance is needed, the connection crossing points are conveniently searched from the row driving units arranged between the two row driving units connected by the same second connecting line.
In some embodiments, the row driving unit may have an input circuit connected to the input signal terminal, an output circuit connected to the output signal terminal, and a reset circuit connected to the reset signal terminal, wherein an output terminal of the input circuit is connected to an input terminal of the output circuit, and an output terminal of the reset circuit is connected to an input terminal of the output circuit.
In the embodiment of the invention, the output signal end of the row driving unit is connected with the input signal end of the corresponding row driving unit positioned at one side of the row driving unit through a first connecting wire, and the output signal end of the row driving unit is connected with the reset signal end of the corresponding row driving unit positioned at the other side of the row driving unit through a second connecting wire, so that the setting of the connecting wire is facilitated, the processing and the manufacturing are facilitated, the crossing point between the first connecting wire and the second connecting wire is facilitated to be found, and the maintenance and the conduction are facilitated through the position of the crossing point when the first connecting wire or the second connecting wire is disconnected.
Alternatively, the disconnected first connection line is conducted with one of the second connection lines by a soldered connection at the intersection point. The length of the disconnected first connecting wire and one second connecting wire at the position of the crossing point can be 5um, and the width can be 5um, so that laser melting connection is facilitated.
Alternatively, the disconnected second connection line is conducted with one of the first connection lines by a soldered connection at the intersection point. The length of the disconnected second connecting wire and the first connecting wire at the position of the crossing point can be 5um, and the width can be 5um, so that laser melting connection is facilitated.
Fig. 1 is a schematic diagram of a row driving unit (GOA) of an array substrate, where input signals of the row driving unit may include: input signal, STV signal, reset signal, VGL signal, VDD signal and CLK signal; the output signal may include: output signal, G-Out signal; the control circuit may include: an input circuit, a starting circuit, a reset circuit, a pull-down control circuit, a pull-down circuit, an output circuit 1 and an output circuit 2. The row driving unit is provided with an input circuit connected with an input signal end, an output circuit connected with an output signal end and a reset circuit connected with a reset signal end, wherein the output end of the input circuit is connected with the input end of the output circuit, and the output end of the reset circuit is connected with the input end of the output circuit. One end of the starting circuit can be connected with the input circuit, and the other end of the starting circuit can be connected with the reset circuit, the pull-down control circuit, the pull-down circuit and the output circuit. Noise reduction can be performed through the pull-down control circuit and the pull-down circuit, and the interconversion between the input signal and the reset signal can be controlled. When the Input signal or the Reset signal of the GOA unit is abnormal, the G-Out signal is abnormal, and the product is bad. In the array substrate row driving unit (GOA), a CLK signal may be inputted through a CLK1 signal line and a CLK2 signal line, an STV signal may be inputted through an STV signal line, a VDD signal may be inputted through a VDD1 signal line and a VDD2 signal line, and a VGL signal may be inputted through a VGL signal line.
The GOA unit cascade is that the Output signal of the GOA unit is the Input signal and the Reset signal of the adjacent other GOA units, for example, as shown in fig. 3, the Output signal of the GOA4 unit is the Reset signal of the GOA1 unit, and is also the Input signal of the GOA6 unit, and the Input signal of the GOA4 unit is the Output signal of the GOA2 unit. When the Input front end supplies a plurality of Input signals through STV, the signal conduction of all GOA units can be realized. The GOAs are cascaded, signals of the connecting lines are close to each other, and specific signal waveforms are shown in fig. 2. When the cascade signal line is abnormal, the signal cannot be transmitted continuously, and the whole liquid crystal panel is abnormal in full screen display or partial display. To facilitate understanding of the cascode circuit, the schematic circuit diagram will not show the G-Out output signal.
As shown in fig. 4, the method for repairing the right side abnormality of the Output signal line in the GOA unit comprises: when the Output signal line of GOA4 is opened at the right side (position a in fig. 4), the Output left signal of GOA4 is normal, the right side cannot normally transmit the signal to the Input signal of GOA6, which is equivalent to the opening of the Input signal line of GOA6, and the Input of GOA6 has no signal, which cannot Output the G-Out and Output signals, and the corresponding Gate line is abnormal. Output of GOA6 has no Output signal, reset of left GOA3 has no input signal, G-Out is abnormal, and the corresponding Gate line is abnormal; similarly, input of the right GOA8 has no Input signal, G-Out is abnormal, corresponding Gate line is abnormal, and 3+2N GOA units are analogically abnormal, wherein the Reset signal line has no Input signal, N is greater than or equal to 1, so that G-Out is abnormal, gate line is abnormal, 6+2N GOA units have Input no Input signal, so that G-Out and Output signals have no Output, gate line is abnormal, and products are abnormal when being lightened. The defects occur in different positions of the cascade region of the GOA unit, and the whole liquid crystal panel can display abnormal full screen or display abnormal part. When the Output signal line (i.e., the first connection line) of the GOA4 is open on the right side, the Reset of the GOA5 has no Input signal, the Input and Output signals have no influence, the maintenance method is to use laser welding to the intersection point (position b in fig. 4) of the Output signal line (the second connection line) of the GOA5 and the open Output signal line (the position b in fig. 4) on the right side of the GOA4, at this time, the Output signal line (the second connection line) of the GOA5 provides the Output signal line (the first connection line) of the GOA4 with a normal signal, the GOA4 is normally conducted, and the product resumes the normal picture. When a failure occurs in other GOA units, adjacent GOA unit signal lines may be used for repair as well.
As shown in fig. 5, the method for repairing left abnormality of Output signal line in GOA unit comprises: when the Output signal line of the GOA4 is left open (as in position a in fig. 5), the Output signal of the GOA4 is normal, the signal cannot be normally transmitted to the Reset signal of the GOA1, the Reset equivalent to GOA1 has no input signal, the G-Out signal is abnormal, the GOA1 Gate line is abnormal, the liquid crystal panel is lighted to display a poor Y-line, the Output signal line (first connecting line) of the GOA2 and the Output intersection point position (position b in fig. 5) of the GOA4 are welded by laser, the Output signal line of the GOA2 provides the Output signal line of the GOA4 with normal signal, the GOA4 is normally turned on, the Reset signal of the GOA1 is recovered, and the product is recovered to a normal picture.
The maintenance method in the embodiment of the invention can be adopted for maintenance when the following conditions occur: when the number of cascade connections is increased, the maintenance requirement can be completed through the signal lines among the GOA units, and more maintenance space exists, as shown in fig. 6, the Output signal of GOA6 is Reset signal Input of GOA1, and is Input signal Input of GOA10, so that 10 GOA units can be considered to be cascaded. When the right signal line (position a in fig. 6) of GOA5 is abnormally opened, the left signal is normal, at this time, the Input of GOA9 has no Input signal, at this time, G-Out and Output signals cannot be Output, the Output of GOA9 is abnormal, the Reset Input signal of GOA4 and the Input signal of GOA13 are affected, the Reset signals of 4+4n GOA units and the Input signals of 9+4n GOA units are abnormal, the corresponding Gate line is also abnormal, and the product display is abnormal. The intersection points of Input signal lines or Output signal lines of GOA 6-GOA 8 units and Output signal lines crossing GOA5 can be found to meet the requirement of GOA5 on the right side of open circuit signal conduction maintenance according to the previous maintenance method, and the problem on the left side can be maintained according to the method.
In the application process, the short circuit condition of the cascade circuit and other position circuits can be also realized by cutting the cascade signal line to form an open circuit and then maintaining. The open circuit position is biased towards the Input signal line or the Reset signal line, and the junction is also searched for welding maintenance. The number of Output and Input connected GOA units and the number of Output and Reset connected GOA units are all required to be greater than or equal to 3, otherwise, when the cascade line is abnormal, there is no usable short circuit signal line, as shown in fig. 7, the cascade number is 2. The open circuit position C cannot be maintained as shown in fig. 8, in which there is a signal line that can be used.
The embodiment of the invention provides an array substrate, which comprises the array substrate driving circuit. The array substrate with the array substrate driving circuit in the embodiment is convenient to maintain and does not cause new defects.
The embodiment of the invention provides a display panel, which comprises the array substrate. Is convenient to maintain, does not cause new defects, and improves the display effect.
An embodiment of the present invention provides a display device including the display panel described in the above embodiment.
The embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the claims, which are to be protected by the present invention.
Claims (10)
1. The maintenance method of the array substrate driving circuit is characterized in that the driving circuit comprises the following steps:
the array substrate comprises a plurality of cascaded array substrate row driving units, a plurality of array substrate driving units and a plurality of driving units, wherein each row driving unit is provided with an input signal end, an output signal end and a reset signal end, the output signal end of each row driving unit is connected with the input signal end of the corresponding row driving unit through a first connecting wire, and the output signal end of each row driving unit is also connected with the reset signal end of the corresponding other row driving unit through a second connecting wire;
the first connecting wire and at least one second connecting wire are arranged in a crossing way and form a crossing point;
the method comprises the following steps:
if the disconnection between the end part of the first connecting wire, which is connected with the output signal end, and the intersection point is detected, the disconnected first connecting wire is conducted with a second connecting wire at the intersection point position;
and/or
The second connecting wire is crossed with at least one first connecting wire and forms a crossing point;
the method comprises the following steps:
if the disconnection between the end part of the second connecting wire, which is connected with the output signal end, and the intersection point is detected, the disconnected second connecting wire is conducted with one first connecting wire at the intersection point position;
the step of conducting the disconnected first connection line with a second connection line at the intersection point position comprises:
conducting the disconnected first connecting line and the second connecting line on the row driving unit adjacent to the row driving unit where the disconnected first connecting line is located at the cross point position;
the step of conducting the disconnected second connection line with a first connection line at the intersection point position comprises:
the disconnected second connection line is conducted with the first connection line on the row driving unit adjacent to the row driving unit where it is located at the intersection point position.
2. The method of repairing of claim 1, wherein the step of conducting the disconnected first connection line with a second connection line at the junction location comprises:
the disconnected first connecting wire and a second connecting wire are connected and conducted at the position of the crossing point through welding; and/or
The step of conducting the disconnected second connection line with a first connection line at the intersection point position comprises:
the disconnected second connecting wire is connected with one first connecting wire at the crossing point position through welding connection.
3. An array substrate driving circuit is characterized by comprising:
the array substrate comprises a plurality of cascaded array substrate row driving units, wherein each row driving unit is provided with an input signal end, an output signal end and a reset signal end, the output signal end of each row driving unit is connected with the input signal end of the corresponding row driving unit through a first connecting wire, and the output signal end of each row driving unit is connected with the reset signal end of the corresponding other row driving unit through a second connecting wire;
the first connecting wire is crossed with at least one second connecting wire, the end part of the first connecting wire, which is connected with the output signal end, is disconnected from the crossing point, and the disconnected first connecting wire is communicated with one second connecting wire at the crossing point position; and/or
The second connecting wire is arranged in a crossing way with at least one first connecting wire, the end part of the second connecting wire, which is connected with the output signal end, is disconnected from the crossing point, and the disconnected second connecting wire is conducted with one first connecting wire at the crossing point position;
the disconnected first connecting line is conducted with a second connecting line on a row driving unit adjacent to the row driving unit where the disconnected first connecting line is located at the position of the cross point; and/or
The disconnected second connection line is conducted at the intersection point with the first connection line on the row driving unit adjacent to the row driving unit where it is located.
4. A driving circuit according to claim 3, wherein at least one row driving unit is provided between two row driving units connected to the same first connection line; and/or
At least one row driving unit is arranged between two row driving units connected with the same second connecting line.
5. A driving circuit according to claim 3, wherein the row driving unit has an input circuit connected to the input signal terminal, an output circuit connected to the output signal terminal, and a reset circuit connected to the reset signal terminal, an output terminal of the input circuit being connected to an input terminal of the output circuit, and an output terminal of the reset circuit being connected to an input terminal of the output circuit.
6. A driving circuit according to claim 3, wherein the output signal terminals of the row driving units are connected to the input signal terminals of the corresponding row driving units located at one side thereof through a first connection line, and the output signal terminals of the row driving units are connected to the reset signal terminals of the corresponding row driving units located at the other side thereof through a second connection line.
7. A driving circuit according to claim 3, wherein the disconnected first connection line is conducted with a second connection line by a soldered connection at the crossing point position; and/or
The disconnected second connecting wire is connected with one first connecting wire at the crossing point position through welding connection.
8. An array substrate comprising the array substrate driving circuit of any one of claims 3 to 7.
9. A display panel comprising the array substrate of claim 8.
10. A display device comprising the display panel of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210276932.3A CN114442390B (en) | 2022-03-21 | 2022-03-21 | Maintenance method of array substrate driving circuit, driving circuit and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210276932.3A CN114442390B (en) | 2022-03-21 | 2022-03-21 | Maintenance method of array substrate driving circuit, driving circuit and display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114442390A CN114442390A (en) | 2022-05-06 |
| CN114442390B true CN114442390B (en) | 2023-10-20 |
Family
ID=81360119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210276932.3A Active CN114442390B (en) | 2022-03-21 | 2022-03-21 | Maintenance method of array substrate driving circuit, driving circuit and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114442390B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060028522A (en) * | 2004-09-24 | 2006-03-30 | 삼성전자주식회사 | Thin film transistor array panel and display apparatus including the same |
| CN101216643A (en) * | 2007-12-26 | 2008-07-09 | 昆山龙腾光电有限公司 | LCD device array substrate, its mending method and LCD device |
| CN102598105A (en) * | 2009-11-04 | 2012-07-18 | 夏普株式会社 | Liquid crystal display device and driving method therefor |
| CN105551423A (en) * | 2016-03-04 | 2016-05-04 | 京东方科技集团股份有限公司 | Grid integrated driving circuit, array substrate and repair method of grid integrated driving circuit |
| CN106652942A (en) * | 2016-12-21 | 2017-05-10 | 深圳市华星光电技术有限公司 | GOA array substrate and display device |
| CN108877683A (en) * | 2018-07-25 | 2018-11-23 | 京东方科技集团股份有限公司 | Gate driving circuit and driving method, display device, manufacturing method of array base plate |
| CN113568232A (en) * | 2021-09-27 | 2021-10-29 | 南京初芯集成电路有限公司 | Pixel unit, array substrate, driving method, liquid crystal panel and liquid crystal display screen |
| CN113625495A (en) * | 2021-07-29 | 2021-11-09 | 深圳市华星光电半导体显示技术有限公司 | Array substrate and display panel |
-
2022
- 2022-03-21 CN CN202210276932.3A patent/CN114442390B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060028522A (en) * | 2004-09-24 | 2006-03-30 | 삼성전자주식회사 | Thin film transistor array panel and display apparatus including the same |
| CN101216643A (en) * | 2007-12-26 | 2008-07-09 | 昆山龙腾光电有限公司 | LCD device array substrate, its mending method and LCD device |
| CN102598105A (en) * | 2009-11-04 | 2012-07-18 | 夏普株式会社 | Liquid crystal display device and driving method therefor |
| CN105551423A (en) * | 2016-03-04 | 2016-05-04 | 京东方科技集团股份有限公司 | Grid integrated driving circuit, array substrate and repair method of grid integrated driving circuit |
| CN106652942A (en) * | 2016-12-21 | 2017-05-10 | 深圳市华星光电技术有限公司 | GOA array substrate and display device |
| CN108877683A (en) * | 2018-07-25 | 2018-11-23 | 京东方科技集团股份有限公司 | Gate driving circuit and driving method, display device, manufacturing method of array base plate |
| CN113625495A (en) * | 2021-07-29 | 2021-11-09 | 深圳市华星光电半导体显示技术有限公司 | Array substrate and display panel |
| CN113568232A (en) * | 2021-09-27 | 2021-10-29 | 南京初芯集成电路有限公司 | Pixel unit, array substrate, driving method, liquid crystal panel and liquid crystal display screen |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114442390A (en) | 2022-05-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8411221B2 (en) | Display device and repairing method for the same | |
| US20070085809A1 (en) | Backup shift register module for a gateline driving circuit | |
| US9759970B2 (en) | Method for repairing broken line | |
| US11145231B2 (en) | Test circuit and display device | |
| US8471800B2 (en) | Display device, liquid crystal display device, and method for manufacturing display device | |
| US7439947B2 (en) | Liquid crystal display driving circuit and display utilizing the same | |
| TW437095B (en) | Substrate for photoelectric device, active matrix substrate and the inspection method of substrate for photoelectric device | |
| KR20070076293A (en) | Liquid crystal display and method of repairing the same | |
| JPH0850465A (en) | Shift register and driving circuit of display device | |
| JPH08320466A (en) | Active matrix substrate and method for correcting its defect | |
| US20010028336A1 (en) | Semiconductor integrated circuit for driving liquid crystal panel | |
| CN105654886A (en) | Grid drive circuit, repairing method thereof and display device | |
| CN113625495B (en) | Array substrate and display panel | |
| CN101510411B (en) | Display device and renovation method thereof | |
| CN107463041B (en) | Peripheral circuit structure of array substrate | |
| CN114442390B (en) | Maintenance method of array substrate driving circuit, driving circuit and display device | |
| JPH0876723A (en) | Driving circuit of active matrix type display device and its operation method | |
| KR20070077680A (en) | Gate driver and liquid crystal display having the same | |
| CN109036325B (en) | Scanning drive circuit and display device | |
| US11200819B2 (en) | Display substrate and manufacturing method thereof, display panel, display motherboard and testing method thereof, and display device | |
| CN110706667B (en) | GOA circuit and display device | |
| CN115171615B (en) | Panel repair circuit, display panel and display device | |
| CN107768387B (en) | A kind of array substrate and its restorative procedure | |
| CN112599062A (en) | Display panel | |
| CN114333580B (en) | Display panel and display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |