CN114442390A - 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
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- CN114442390A CN114442390A CN202210276932.3A CN202210276932A CN114442390A CN 114442390 A CN114442390 A CN 114442390A CN 202210276932 A CN202210276932 A CN 202210276932A CN 114442390 A CN114442390 A CN 114442390A
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- 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
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- 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
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- 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
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- 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
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- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Computer Hardware Design (AREA)
- Theoretical Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Mathematical Physics (AREA)
- Optics & Photonics (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The utility model discloses a maintenance method, drive circuit and display device of array substrate drive circuit, drive circuit includes: the array substrate comprises a plurality of array substrate row driving units which are connected in a cascade mode, wherein an output signal end of each row driving unit is connected with an input signal end of the corresponding row driving unit through a first connecting line, and an output signal end of each row driving unit is connected with a reset signal end of the corresponding other row driving unit through a second connecting line; the first connecting line and the at least one second connecting line are arranged in a crossed mode to form a cross point; the method comprises the following steps: detecting that the end of the first connecting line connected with the output signal end is disconnected with the cross point, and conducting the disconnected first connecting line and one second connecting line at the cross point; and/or the second connecting line and at least one first connecting line are arranged in a crossed manner; and detecting that the end part of the second connecting line connected with the output signal end is disconnected with the cross point, and conducting the disconnected second connecting line and one first connecting line at the cross point. The method does not need to additionally repair the auxiliary line, and is convenient and fast 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, the driving mode of the Array substrate in the liquid crystal panel manufacturing industry generally adopts a Gate Driver on Array (GOA for short), and compared with the IC function of the original Gate Driver, the driving mode has the advantages of high productivity, low cost, and better suitability for the market demand of the current narrow-frame or frameless display products. The GOA technology is that grid line scanning driving signal circuits are formed on a GOA unit through a cascade mode and are manufactured on an array substrate of a liquid crystal panel, in the display driving process, the GOA unit sends scanning driving signals to grid electrodes of all lines, a TFT structure of a pixel display area of the liquid crystal panel is opened, data line signals can be normally transmitted to pixel electrodes, and the display panel is bright. When the GOA unit cascade circuit has a problem, the signal output signal cannot be transmitted to the next unit input signal, and the whole liquid crystal panel will have full-screen display abnormality or partial display abnormality, resulting in a reduction in yield. In the maintenance process, an additional repair auxiliary line needs to be added, so that the maintenance is inconvenient and new defects are easily caused.
Disclosure of Invention
An embodiment of the invention provides a method for maintaining a driving circuit of an array substrate, the driving circuit and a display device, which are used for solving the problem that the driving circuit of a GOA unit cascade circuit is inconvenient to maintain in the maintaining process.
In a first aspect, an embodiment of the present invention provides a method for maintaining a driving circuit of an array substrate, where the driving circuit includes:
the array substrate line driving device comprises a plurality of cascaded array substrate line driving units, wherein each line driving unit is provided with an input signal end, an output signal end and a reset signal end, the output signal end of each line driving unit is connected with the input signal end of the corresponding line driving unit through a first connecting line, and the output signal end of each line driving unit is also connected with the reset signal end of the corresponding other line driving unit through a second connecting line;
the first connecting line and at least one second connecting line are arranged in a crossed mode to form a cross point;
the method comprises the following steps:
if the disconnection between the end part of the first connecting line connected with the output signal end and the cross point is detected, conducting the disconnected first connecting line and one second connecting line at the position of the cross point;
and/or
The second connecting line and at least one first connecting line are arranged in a crossed mode to form a cross point;
the method comprises the following steps:
and if the disconnection between the end part of the second connecting line connected with the output signal end and the cross point is detected, conducting the disconnected second connecting line and one first connecting line at the cross point.
Wherein the step of conducting the disconnected first connection line with one of the second connection lines at the position of the intersection comprises:
and conducting the disconnected first connecting line and the second connecting line on the row driving unit adjacent to the row driving unit at the position of the cross point.
Wherein the step of conducting the disconnected second connection line with one of the first connection lines at the position of the intersection comprises:
and conducting 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 at the position of the cross point.
Wherein the step of conducting the disconnected first connection line with one of the second connection lines at the position of the intersection comprises:
connecting the disconnected first connecting line and one second connecting line at the position of the cross point through welding; and/or
The step of conducting the disconnected second connection line with one of the first connection lines at the position of the intersection includes:
and conducting the disconnected second connecting wire and one first connecting wire at the position of the cross point through welding connection.
In a second aspect, an embodiment of the present invention provides an array substrate driving circuit, including:
the array substrate line driving device comprises a plurality of cascaded array substrate line driving units, wherein each line driving unit is provided with an input signal end, an output signal end and a reset signal end, the output signal end of each line driving unit is connected with the input signal end of the corresponding line driving unit through a first connecting line, and the output signal end of each line driving unit is connected with the reset signal end of the corresponding other line driving unit through a second connecting line;
the first connecting line and at least one second connecting line are arranged in a crossed mode, the end portion, connected with the output signal end, of the first connecting line is disconnected from a cross point, and the disconnected first connecting line and one second connecting line are conducted at the cross point; and/or
The second connecting line and at least one first connecting line are arranged in a crossed mode, the end portion, connected with the output signal end, of the second connecting line is disconnected with the cross point, and the disconnected second connecting line and one first connecting line are conducted at the cross point.
The disconnected first connecting line and a second connecting line on the row driving unit adjacent to the row driving unit where the first connecting line is located are conducted at the position of the cross point; and/or
The disconnected second connecting line is conducted with the first connecting line on the row driving unit adjacent to the row driving unit where the second connecting line is located at the position of the cross point.
At least one row driving unit is arranged between two row driving units connected by the same first connecting line; and/or
At least one row driving unit is arranged between the two row driving units connected by 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, 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 on one side of the row driving unit through a first connecting line, and the output signal end of the row driving unit is connected with the reset signal end of the corresponding row driving unit positioned on the other side of the row driving unit through a second connecting line.
The disconnected first connecting line and one second connecting line are connected and conducted at the position of the cross point through welding; and/or
The disconnected second connection line is electrically connected to one of the first connection lines at the position of the intersection by a solder 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 in the foregoing embodiments.
In a fifth aspect, an embodiment of the present invention provides a display device, including the display panel described in the above embodiments.
The maintenance method of 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 cascaded array substrate row driving units and a plurality of cascaded array substrate column 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 line, 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 line; the first connecting line and at least one second connecting line are arranged in a crossed mode to form a cross point; the method comprises the following steps: if the disconnection between the end part of the first connecting line connected with the output signal end and the cross point is detected, conducting the disconnected first connecting line and one second connecting line at the position of the cross point; and/or the second connecting line is arranged to intersect with at least one first connecting line to form an intersection point; the method comprises the following steps: and if the disconnection between the end part of the second connecting line connected with the output signal end and the cross point is detected, conducting the disconnected second connecting line and one first connecting line at the cross point position. The disconnected first connecting line and one second connecting line are conducted at the position of a cross point through maintenance, so that the disconnected first connecting line can transmit an output signal through the second connecting line, a signal output by an output signal end connected with the second connecting line can be transmitted to the disconnected first connecting line through the second connecting line, and then the signal is transmitted to an input signal end of a corresponding row of driving units through the disconnected first connecting line. Or the disconnected second connecting line and one first connecting line are conducted at the position of the cross point through maintenance, the signal 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 signal is 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 extra repair auxiliary lines, is convenient to maintain when the whole liquid crystal panel is abnormal in display, cannot 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 cells;
FIG. 4 is a schematic maintenance diagram of an Output signal right anomaly in the array substrate driving circuit;
FIG. 5 is a schematic maintenance diagram of an Output signal left side anomaly in the array substrate driving circuit;
FIG. 6 is another schematic diagram illustrating maintenance of an Output signal on the right side of an 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 illustration of the cascade disconnect position being out of service.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms first, second and the like in the description and in the claims of the present invention 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 is interchangeable under appropriate circumstances such that embodiments of the invention may be practiced otherwise than as specifically illustrated and described herein. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.
An embodiment of the present invention will be described below with reference to fig. 1 to 8.
The maintenance method of the array substrate driving circuit provided by the embodiment of the invention comprises the following steps: the array substrate line driving device comprises a plurality of cascaded array substrate line driving units, wherein each line driving unit is provided with an input signal end, an output signal end and a reset signal end, the output signal end of each line driving unit is connected with the input signal end of the corresponding line driving unit through a first connecting line, the output signal end of each line driving unit is also connected with the reset signal end of the corresponding other line driving unit through a second connecting line, and the first connecting line and the second connecting line can be used as signal lines for transmitting signals; the first connecting line and at least one second connecting line are arranged in a crossed mode to form a cross point; the method comprises the following steps: if the disconnection between the end part of the first connecting line connected with the output signal end and the cross point is detected, conducting the disconnected first connecting line and one second connecting line at the cross point position, for example, conducting the disconnected first connecting line and the second connecting line through laser welding; and/or the second connecting line is arranged to intersect with at least one first connecting line to form an intersection point; the method comprises the following steps: if it is detected that the end of the second connection line connected to the output signal terminal is disconnected from the intersection, the disconnected second connection line is conducted with one of the first connection lines at the intersection, for example, the connection can be achieved by laser welding.
According to the maintenance method of the embodiment of the invention, the disconnected first connecting line and one second connecting line are conducted at the position of the cross point, so that the disconnected first connecting line can transmit the output signal through the second connecting line, the signal output by the output signal end connected with the second connecting line can be transmitted to the disconnected first connecting line through the second connecting line, and then the signal is transmitted to the input signal end of the corresponding row of driving units through the disconnected first connecting line. Or the disconnected second connecting line and one first connecting line are conducted at the position of the cross point through maintenance, the signal 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 signal is 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 extra repair auxiliary lines, is convenient to maintain when the whole liquid crystal panel is abnormal in display, cannot 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 by the same first connection line. At least one row driving unit may be disposed between two row driving units connected by the same second connection line. The step of conducting the disconnected first connection line with one of the second connection lines at the position of the intersection may comprise:
and the disconnected first connecting line and the second connecting line on the row driving unit adjacent to the row driving unit where the first connecting line is positioned are conducted at the position of the cross point, so that the first connecting line and the second connecting line are conveniently and quickly connected and conducted, 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 one of the first connection lines at the position of the intersection may include:
and 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 position of the cross point, so that the second connecting line and the first connecting line are conveniently and quickly connected and conducted, 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 second connection line at the position of the intersection may comprise:
the disconnected first connecting line and one second connecting line are connected and conducted at the position of the cross point through welding, for example, the first connecting line and the second connecting line can be connected through laser welding. The length of the first connecting line and the second connecting line at the position of the cross point can be 5um, and the width can be 5um, so that the laser melting connection is facilitated.
Alternatively, the step of conducting the disconnected second connection line with one of the first connection lines at the position of the intersection may include:
the broken second connection line is connected to one of the first connection lines at the position of the intersection by a soldered connection, for example by laser soldering. The length of the second connecting line and the first connecting line of disconnection in the crosspoint position can be 5um, and the width can be 5um, the laser melting of being convenient for is connected.
The array substrate driving circuit of the embodiment of the invention comprises:
the array substrate line driving device comprises a plurality of cascaded array substrate line driving units, wherein each line driving unit is provided with an input signal end, an output signal end and a reset signal end, the output signal end of each line driving unit is connected with the input signal end of the corresponding line driving unit through a first connecting line, and the output signal end of each line driving unit is connected with the reset signal end of the corresponding other line driving unit through a second connecting line;
the first connecting line and at least one second connecting line are arranged in a crossed mode, the end portion, connected with the output signal end, of the first connecting line is disconnected from a cross point, and the disconnected first connecting line and one second connecting line are conducted at the cross point; and/or
The second connecting line and at least one first connecting line are arranged in a crossed mode, the end portion, connected with the output signal end, of the second connecting line is disconnected with the cross point, and the disconnected second connecting line and one first connecting line are conducted at the cross point.
The disconnected first connecting line and one second connecting line are conducted at the position of the cross point, so that the disconnected first connecting line can transmit an output signal through the second connecting line, a signal output by an output signal end connected with the second connecting line can be transmitted to the disconnected first connecting line through the second connecting line, and then the signal is transmitted to the input signal end of the corresponding row of driving units through the disconnected first connecting line. And conducting the disconnected second connecting line and one first connecting line at the position of the cross point, transmitting a signal output by an output signal end connected with the first connecting line to the disconnected second connecting line through the first connecting line, and transmitting the signal to the reset signal end of the corresponding other row of driving units through the disconnected second connecting line. When the first connecting line or the second connecting line is disconnected, an additional repair auxiliary line is not needed to be added, and new defects can not be 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 position of the cross point. The 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.
In other embodiments, the disconnected second connection line and the first connection line on the row driving unit adjacent to the row driving unit where the second connection line is located are conducted at the position of the cross point. The 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.
Optionally, at least one row driving unit is arranged between two row driving units connected by the same first connection line. When the first connecting line is disconnected and needs to be maintained, a connection intersection point can be conveniently found from the row driving unit arranged between the two row driving units connected with the same first connecting line.
Optionally, at least one row driving unit is disposed between two row driving units connected by the same second connection line. When maintenance is needed, the row driving units arranged between the two row driving units connected by the same second connecting line can be conveniently searched for the connectable intersection points.
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 on one side of the row driving unit through a first connecting line, and the output signal end of the row driving unit is connected with the reset signal end of the corresponding row driving unit on the other side of the row driving unit through a second connecting line, so that the arrangement of the connecting lines is convenient, the processing and the manufacturing are convenient, the crossing point between the first connecting line and the second connecting line is convenient to find, and the maintenance and the conduction are convenient through the crossing point position when the first connecting line or the second connecting line is disconnected.
Optionally, the disconnected first connection line and one second connection line are connected and conducted at the intersection position through welding. The length of the first connecting line and the second connecting line at the position of the cross point can be 5um, and the width can be 5um, so that the laser melting connection is facilitated.
Optionally, the disconnected second connection line is electrically connected to one of the first connection lines at the position of the intersection by a soldered connection. The length of the second connecting line and the first connecting line of disconnection in the crosspoint position can be 5um, and the width can be 5um, the laser melting of being convenient for is connected.
Fig. 1 is a schematic diagram of a row driving unit (GOA) of an array substrate, wherein input signals of the row driving unit may include: an Input signal, an STV signal, a Reset signal, a VGL signal, a VDD signal and a CLK signal; the output signal may include: output signal, G-Out signal; the control circuit may include: the circuit comprises 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. The pull-down control circuit and the pull-down circuit can reduce noise and control the mutual conversion between the input signal and the reset signal. When the Input signal or Reset signal of the GOA unit is abnormal, the G-Out signal is abnormal, and the product is poor. In the array substrate row driving unit (GOA), a CLK signal may be input through a CLK1 signal line and a CLK2 signal line, an STV signal may be input through an STV signal line, a VDD signal may be input through a VDD1 signal line and a VDD2 signal line, and a VGL signal may be input through a VGL signal line.
For example, as shown in fig. 3, the Output signal of the GOA4 unit is the Reset signal of the GOA1 unit, and is simultaneously the Input signal of the GOA6 unit, and similarly, the Input signal of the GOA4 unit is the Output signal of the GOA2 unit. When the Input front end provides a plurality of Input signals through the STV, all GOA unit signals can be conducted. The GOAs are cascaded with each other, and signals between the connection 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 has full-screen display abnormality or partial display abnormality. To facilitate understanding of the cascaded circuit, the circuit schematic will show the G-Out output signal not shown.
As shown in fig. 4, the method for repairing an abnormal condition on the right side of an Output signal line in a GOA unit: when the right side of the Output signal line of GOA4 is open (position a in fig. 4), the signal on the left side of Output of GOA4 is normal, and the right side cannot normally transmit the signal to the Input signal of GOA6, which is equivalent to the open signal line of GOA6, and the Input of GOA6 has no signal, and thus G-Out and Output signals cannot be Output, and the corresponding Gate line is abnormal. Output of GOA6 has no Output signal, Reset of GOA3 on the left side has no input signal, G-Out is abnormal, and corresponding Gate line is abnormal; similarly, the Input of the right-side GOA8 has no Input signal, G-Out is abnormal, the corresponding Gate line is abnormal, by analogy 3+2N GOA units can generate a Reset signal line with no Input signal, N is larger than or equal to 1, G-Out is abnormal, the Gate line is abnormal, 6+2N GOA units can generate an Input signal with no Input signal, G-Out and Output signals are not Output, the Gate line is abnormal, and the display of the product is abnormal when the product is lighted. The defects are generated in different positions of the GOA unit cascade region, and the whole liquid crystal panel has full-screen display abnormality or partial display abnormality. When the right side of the Output signal line (i.e. the first connection line) of the GOA4 is open, Reset of the GOA5 has no Input signal, and Input and Output have no influence, the maintenance method is to use laser welding at the intersection (position b in fig. 4) of the Output signal line (the second connection line) of the GOA5 and the open Output signal line on the right side of the GOA4, at this time, the Output signal line (the second connection line) of the GOA5 is provided to the Output signal line (the first connection line) of the GOA4 for normal signal, the GOA4 is normally turned on, and the product returns to normal picture. When the defects occur in other GOA units, the signal lines of the adjacent GOA units can be used for maintenance.
As shown in fig. 5, the method for repairing an abnormal condition on the left side of an Output signal line in a GOA unit: when the left side of the Output signal line of GOA4 is open (as shown in position a in fig. 5), the Output right side signal of GOA4 is normal, and cannot be normally transmitted to the Reset signal of GOA1, at this time, it is equivalent to no input signal of GOA1, the G-Out signal is abnormal, the GOA1 Gate line is abnormal, at this time, the liquid crystal panel lights up to display a Y-direction line defect, the position of the intersection of the Output signal line (first connection line) of GOA2 and the Output of GOA4 (position b in fig. 5) is laser welded, at this time, the Output signal line of GOA2 provides the Output signal line of GOA4 with a normal signal, GOA4 is normally on, the Reset signal of GOA1 is restored, and the product returns 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 the cascades is increased and used, the maintenance requirement can be completed through the signal lines between the GOA units, and more maintenance spaces exist, as shown in fig. 6, the Output signal of the GOA6 is the Reset signal Input of the GOA1, and simultaneously the Input signal Input of the GOA10, which can be regarded as 10 GOA unit cascades. When an abnormal open circuit occurs in the right signal line (position a in fig. 6) of Output of GOA5, the left signal is normal, at this time, Input of GOA9 has no Input signal, at this time, G-Out and Output signals cannot be Output, Output of GOA9 is abnormal, Reset Input signal of GOA4 and Input signal of GOA13 are affected at the same time, by analogy, Reset signal abnormality of 4+4N GOA units and Input signal abnormality of 9+4N GOA units, corresponding Gate line is also abnormal, and product display is abnormal. Similarly, according to the previous maintenance method, it can be found that the intersection of the Input or Output signal line of the units from GOA6 to GOA8 and the Output signal line of the intersection of GOA5 can meet the signal conduction maintenance requirement on the right side of the shutdown of GOA5, and the problem on the left side can be maintained according to the method.
In the application process, the situation that the cascade circuit is short-circuited with circuits at other positions can also be maintained after the cascade signal line is cut to form an open circuit. The open circuit position is deviated to the direction of an Input signal line or a 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 need to be greater than or equal to 3, otherwise, when the cascade line is abnormal, there is no available short-circuit signal line, as shown in fig. 7, which is a schematic diagram of GOA units with cascade number of 2. In the open position, there is a signal line available, as shown in fig. 8, and open position C cannot be serviced.
An embodiment of the present invention provides an array substrate, including the array substrate driving circuit described in the above embodiment. The array substrate with the array substrate driving circuit in the embodiment is convenient to maintain and cannot cause new defects.
An embodiment of the present invention provides a display panel, including the array substrate described in the above embodiment. The maintenance is convenient, no new defect is caused, and the display effect is improved.
An embodiment of the present invention provides a display device, including the display panel described in the above embodiment.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (13)
1. A method for maintaining a driving circuit of an array substrate is characterized in that the driving circuit comprises:
the array substrate line driving device comprises a plurality of cascaded array substrate line driving units, wherein each line driving unit is provided with an input signal end, an output signal end and a reset signal end, the output signal end of each line driving unit is connected with the input signal end of the corresponding line driving unit through a first connecting line, and the output signal end of each line driving unit is also connected with the reset signal end of the corresponding other line driving unit through a second connecting line;
the first connecting line and at least one second connecting line are arranged in a crossed mode to form a cross point;
the method comprises the following steps:
if the disconnection between the end part of the first connecting line connected with the output signal end and the cross point is detected, conducting the disconnected first connecting line and one second connecting line at the position of the cross point;
and/or
The second connecting line and at least one first connecting line are arranged in a crossed mode to form a cross point;
the method comprises the following steps:
and if the disconnection between the end part of the second connecting line connected with the output signal end and the cross point is detected, conducting the disconnected second connecting line and one first connecting line at the cross point position.
2. The method of claim 1, wherein the step of conducting the disconnected first connection line with a second connection line at the intersection location comprises:
and conducting the disconnected first connecting line and a second connecting line on a row driving unit adjacent to the row driving unit at the position of the cross point.
3. The method of maintenance according to claim 1, wherein the step of conducting the disconnected second connection line with one of the first connection lines at the position of the intersection comprises:
and conducting 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 at the position of the cross point.
4. The method of maintenance according to claim 1, wherein the step of conducting the disconnected first connection line with a second connection line at the location of the intersection comprises:
connecting the disconnected first connecting line and one second connecting line at the position of the cross point through welding; and/or
The step of conducting the disconnected second connection line with one of the first connection lines at the position of the intersection includes:
and conducting the disconnected second connecting wire and one first connecting wire at the position of the cross point through welding connection.
5. An array substrate driving circuit, comprising:
the array substrate line driving device comprises a plurality of cascaded array substrate line driving units, wherein each line driving unit is provided with an input signal end, an output signal end and a reset signal end, the output signal end of each line driving unit is connected with the input signal end of the corresponding line driving unit through a first connecting line, and the output signal end of each line driving unit is connected with the reset signal end of the corresponding other line driving unit through a second connecting line;
the first connecting line and at least one second connecting line are arranged in a crossed mode, the end portion, connected with the output signal end, of the first connecting line is disconnected from a cross point, and the disconnected first connecting line and one second connecting line are conducted at the cross point; and/or
The second connecting line and at least one first connecting line are arranged in a crossed mode, the end portion, connected with the output signal end, of the second connecting line is disconnected with the cross point, and the disconnected second connecting line and one first connecting line are conducted at the cross point.
6. The driving circuit according to claim 5, wherein the disconnected first connection line and the second connection line on the row driving unit adjacent to the row driving unit where the disconnected first connection line is located are conducted at the position of the intersection point; and/or
The disconnected second connecting line is conducted with the first connecting line on the row driving unit adjacent to the row driving unit where the second connecting line is located at the position of the cross point.
7. The driving circuit according to claim 5, wherein at least one row driving unit is disposed between two row driving units connected by the same first connection line; and/or
At least one row driving unit is arranged between the two row driving units connected by the same second connecting line.
8. The driving circuit according to claim 5, 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 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.
9. The driving circuit according to claim 5, wherein the output signal terminal of the row driving unit is connected to the input signal terminal of the corresponding row driving unit on one side thereof through a first connection line, and the output signal terminal of the row driving unit is connected to the reset signal terminal of the corresponding row driving unit on the other side thereof through a second connection line.
10. The drive circuit according to claim 5, wherein the disconnected first connection line and one of the second connection lines are conducted by a solder connection at a crossing point position; and/or
The disconnected second connection line is electrically connected to one of the first connection lines at the position of the intersection by a solder connection.
11. An array substrate comprising the array substrate driving circuit of any one of claims 5 to 10.
12. A display panel comprising the array substrate as claimed in claim 11.
13. A display device characterized by comprising the display panel described in claim 12.
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| CN114442390B (en) | 2023-10-20 |
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