CN112331115A - Liquid crystal panel and GOA circuit detection method of liquid crystal panel - Google Patents
Liquid crystal panel and GOA circuit detection method of liquid crystal panel Download PDFInfo
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- CN112331115A CN112331115A CN202011226375.1A CN202011226375A CN112331115A CN 112331115 A CN112331115 A CN 112331115A CN 202011226375 A CN202011226375 A CN 202011226375A CN 112331115 A CN112331115 A CN 112331115A
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 89
- 238000001514 detection method Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 claims abstract description 33
- 238000012360 testing method Methods 0.000 claims description 41
- 238000003466 welding Methods 0.000 claims description 12
- 230000000694 effects Effects 0.000 abstract description 8
- 239000010408 film Substances 0.000 description 24
- 239000000758 substrate Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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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
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
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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
Abstract
The application discloses liquid crystal display panel and liquid crystal display panel GOA circuit detection method, liquid crystal display panel GOA circuit detection method is applicable to liquid crystal display panel, and liquid crystal display panel includes: the detection method of the GOA circuit of the liquid crystal panel comprises the following steps of: the method comprises the steps that a scanning line connected with the output end of a GOA circuit to be detected is electrically connected with at least one data line; and detecting the voltage of the data line electrically connected with the scanning line to obtain the output voltage of the output end of the GOA circuit to be detected. This application is through detecting the indirect output voltage who reachs the GOA unit in the GOA circuit of voltage of data line realizes the detection to GOA unit output voltage in the liquid crystal display panel GOA circuit to judge specifically which one-level GOA unit circuit trouble to this detection effect that improves the GOA circuit reduces the prosthetic degree of difficulty of GOA circuit.
Description
Technical Field
The application relates to the field of displays, in particular to a liquid crystal panel and a GOA circuit detection method of the liquid crystal panel.
Background
The existing technology architecture of the liquid crystal panel is divided into two types, namely, SOC (System on chip), driving scan line and GOA (Gate driver on array), by Gate driver design. In view of product requirements, the smaller frame is desirable, so compared with the SOC design, the GOA has smaller boundary width, so that the gate driver chip can be omitted, and the cost can be reduced.
The GOA circuit failure detection designed at present can only detect the output of the GOA unit circuit of the last stage, the whole GOA circuit is formed by cascading N-stage GOA unit circuits, if a GOA unit of a certain stage in the middle of the GOA circuit fails, the output of the GOA unit of the last stage is abnormal, and therefore the GOA unit circuit of the specific stage cannot be judged to be in fault. This increases the difficulty of repair of the GOA circuit.
Disclosure of Invention
The application mainly aims to provide a liquid crystal panel and a liquid crystal panel GOA circuit detection method, and aims to improve the detection effect of the GOA circuit and reduce the difficulty of repairing the GOA circuit.
In order to achieve the above object, the present application provides a method for detecting a GOA circuit of a liquid crystal panel, where the method is applicable to a liquid crystal panel, and the liquid crystal panel includes: the detection method of the GOA circuit of the liquid crystal panel comprises the following steps of:
the method comprises the steps that a scanning line connected with the output end of a GOA circuit to be detected is electrically connected with at least one data line;
and detecting the voltage of the data line electrically connected with the scanning line to obtain the output voltage of the output end of the GOA circuit to be detected.
In some embodiments, the output of the GOA circuit to be detected comprises an output of any one of the GOA units in the GOA circuit.
In some embodiments, electrically connecting the scan line connected to the output terminal of the GOA circuit to be detected with at least one data line includes:
and welding the scanning line connected with the output end of the GOA circuit to be detected with any data line by laser.
In some embodiments, electrically connecting the scan line connected to the output terminal of the GOA circuit to be detected with at least one data line includes:
and welding the scanning line connected with the output end of the GOA circuit to be detected with all the data lines by laser.
In some embodiments, detecting a voltage of the data line electrically connected to the scan line to obtain an output voltage of an output end of the GOA circuit to be detected includes:
and detecting the voltage of the pins, corresponding to the data lines, electrically connected with the scanning lines on the flip chip film, so as to obtain the output voltage of the output end of the GOA circuit to be detected.
In some embodiments, detecting a voltage of the data line electrically connected to the scan line to obtain an output voltage of an output end of the GOA circuit to be detected includes:
and detecting the voltage of a pin which is electrically connected with any data line on the chip on film to obtain the output voltage of the output end of the GOA circuit to be detected.
In some embodiments, detecting a voltage of the data line electrically connected to the scan line to obtain an output voltage of an output end of the GOA circuit to be detected includes:
and electrically connecting one end of the data line electrically connected with the scanning line connected with the output end of the GOA circuit to be detected with the test gasket on the liquid crystal panel, and testing the voltage of the test gasket in a cell test to obtain the output voltage of the output end of the GOA circuit to be detected.
The application also provides a method for detecting the GOA circuit of the liquid crystal panel, which is suitable for the liquid crystal panel, and the liquid crystal panel comprises the following steps: the detection method of the GOA circuit of the liquid crystal panel comprises the following steps of:
the method comprises the steps that a scanning line connected with the output end of a GOA circuit to be detected is electrically connected with at least one data line;
and detecting the voltage of the pins, corresponding to the data lines, electrically connected with the scanning lines on the flip chip film, so as to obtain the output voltage of the output end of the GOA circuit to be detected.
The application also provides a method for detecting the GOA circuit of the liquid crystal panel, which is suitable for the liquid crystal panel, and the liquid crystal panel comprises the following steps: the detection method of the GOA circuit of the liquid crystal panel comprises the following steps of:
the method comprises the steps that a scanning line connected with the output end of a GOA circuit to be detected is electrically connected with at least one data line;
and electrically connecting one end of the data line electrically connected with the scanning line connected with the output end of the GOA circuit to be detected with the test gasket on the liquid crystal panel, and testing the voltage of the test gasket in a cell test to obtain the output voltage of the output end of the GOA circuit to be detected.
The present application further provides a liquid crystal panel, the liquid crystal panel includes:
the display device comprises an effective display area, a GOA circuit and a chip on film, wherein the GOA circuit is used for providing driving signals for a plurality of scanning lines of the effective display area, and the chip on film is used for providing driving signals for a plurality of data lines of the effective display area;
the GOA circuit comprises a plurality of cascaded GOA units, the output end of each GOA unit is connected with at least one data line, the liquid crystal panel further comprises a test gasket, and one end of each data line connected with the output end of each GOA unit is electrically connected with the test gasket.
The method comprises the steps that a scanning line connected with the output end of a GOA circuit to be detected is electrically connected with at least one data line; and detecting the voltage of the data line electrically connected with the scanning line to obtain the output voltage of the output end of the GOA circuit to be detected. Therefore, the output voltage of the GOA unit in the GOA circuit is indirectly obtained by detecting the voltage of the data line, the output voltage of the GOA unit in the GOA circuit of the liquid crystal panel is detected, and the specific grade of GOA unit circuit fault is judged, so that the detection effect of the GOA circuit is improved, and the difficulty of repairing the GOA circuit is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a flowchart illustrating a first embodiment of a method for detecting a GOA circuit of a liquid crystal panel according to the present disclosure;
fig. 2 is a flowchart of a first embodiment of the method for detecting a GOA circuit of a liquid crystal panel according to the present application, when a scan line connected to an output end of the GOA circuit to be detected is electrically connected to any one of data lines in the effective display area;
fig. 3 is a flowchart illustrating a first embodiment of a method for detecting a GOA circuit of a liquid crystal panel according to the present application, when a scan line connected to an output end of the GOA circuit to be detected is electrically connected to all data lines in the effective display area;
FIG. 4 is a flowchart illustrating a second embodiment of a method for detecting a GOA circuit of a liquid crystal panel according to the present application;
FIG. 5 is a schematic diagram of a liquid crystal panel for implementing the process of FIG. 2;
FIG. 6 is a schematic diagram of a liquid crystal panel for implementing the process of FIG. 3;
fig. 7 is a schematic structural diagram of a liquid crystal panel according to the present application.
The implementation, functional features and advantages of the objectives of the present application will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. 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 application.
It should be noted that all the directional indications (such as up, down, left, right, front, and rear … …) in the embodiment of the present application are only used to explain the relative position relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indication is changed accordingly.
In this application, unless expressly stated or limited otherwise, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In addition, descriptions in this application as to "first", "second", etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present application.
The GOA circuit failure detection designed at present can only detect the output of the GOA unit circuit of the last stage, the whole GOA circuit is formed by cascading N-stage GOA unit circuits, if a GOA unit of a certain stage in the middle of the GOA circuit fails, the output of the GOA unit of the last stage is abnormal, and therefore the GOA unit circuit of the specific stage cannot be judged to be in fault. This increases the difficulty of repair of the GOA circuit.
Therefore, a liquid crystal panel GOA circuit detection method and a liquid crystal panel are needed, which can improve the detection effect of the GOA circuit and reduce the difficulty of repairing the GOA circuit. In view of this, the present application is illustrated below by means of several examples.
Example one
The application provides a liquid crystal display panel GOA circuit detection method, and the liquid crystal display panel GOA circuit detection method is suitable for a liquid crystal display panel, and the liquid crystal display panel comprises: the display device comprises an effective display area, a GOA circuit and a chip on film, wherein the GOA circuit is used for providing driving signals for a plurality of scanning lines of the effective display area, and the chip on film is used for providing driving signals for a plurality of data lines of the effective display area.
Referring to fig. 7, specifically, the plurality of scan lines are uniformly arranged along a longitudinal direction of the effective display area, and the plurality of data lines are uniformly arranged along a transverse direction of the effective display area.
The GOA circuit is located at a lateral side of the active display area in a lateral direction. It should be noted that, in this embodiment, the GOA circuit may be disposed on one side of the lateral direction of the effective display area or on both sides of the lateral direction of the effective display area. When the GOA circuits are arranged on two sides of the transverse direction of the effective display area, the left GOA circuit and the right GOA circuit drive the thin film transistors connected with the scanning lines in the effective display area simultaneously. The liquid crystal panel at this time is a liquid crystal panel driven by a double-ended GOA circuit.
The chip on film is arranged on one side of the effective display area in the longitudinal direction and used for providing a driving signal for each data line, and the chip on film is provided with a plurality of pins with the number corresponding to that of the data lines. The number of the flip chip films may be one or more according to the actual requirement, which is not limited herein.
Referring to fig. 1, the method for detecting the GOA circuit of the liquid crystal panel includes:
s10, electrically connecting the scanning line connected with the output end of the GOA circuit to be detected with at least one data line;
since the GOA circuit includes a plurality of cascaded GOA units (not shown), each GOA unit has an output terminal, and each output terminal of the GOA circuit is electrically connected to the scan lines in the effective display area in a one-to-one correspondence manner. Therefore, the output of the GOA circuit to be detected refers to the output of any one of the GOA units in the GOA circuit (as shown, the output of any one of the GOA units g1, g.
Specifically, the electrically connecting the scan line connected to the output end of the GOA circuit to be detected with at least one data line includes:
and welding the scanning line connected with the output end of the GOA circuit to be detected with at least one data line by laser. Of course, other electrical connections may be used, such as argon arc welding, plasma arc welding, and electron beam welding.
Furthermore, the scan line connected to the output end of the GOA circuit to be detected can be electrically connected to any one of the data lines in the effective display area (i.e. laser welding). Or, the scanning line connected to the output end of the GOA circuit to be detected may be electrically connected to all the data lines in the effective display area (i.e., laser welding).
And S20, detecting the voltage of the data line electrically connected with the scanning line to obtain the output voltage of the output end of the GOA circuit to be detected.
Referring to fig. 2, when a scan line connected to an output end of a GOA circuit to be detected is electrically connected to any one of the data lines in the effective display area, detecting a voltage of the data line electrically connected to the scan line to obtain an output voltage of the output end of the GOA circuit to be detected includes:
and S30, detecting the voltage of the pins, corresponding to the data lines, electrically connected with the scanning lines on the flip chip film, and obtaining the output voltage of the output end of the GOA circuit to be detected.
Referring to fig. 5, if the output end of the GOA circuit to be detected is g1, electrically connecting the output end of the GOA circuit g1 with any one of the data lines (e.g., the data line d1) in the active display area, only detecting the voltage of the electrically connected pin corresponding to the data line d1 on the flip chip film, so as to obtain the output voltage of the output end of the GOA circuit to be detected.
Because the output end of the GOA circuit to be detected (i.e. the output end of the GOA unit to be detected) is electrically connected to any one of the data lines in the effective display area, i.e. the output end of the GOA circuit to be detected (i.e. the output end of the GOA unit to be detected) is short-circuited with any one of the data lines in the effective display area, the voltage on the data connected to the output end of the GOA circuit to be detected is consistent with the output end of the GOA circuit to be detected, and because the flip-chip film is used for providing a driving signal for each data line, and the flip-chip film is provided with a plurality of pins corresponding to the number of the data lines. Therefore, the output voltage of the output end of the GOA circuit to be detected can be obtained by detecting the voltage of the pin, corresponding to the electrical connection, of the data line on the flip chip film, wherein the pin is electrically connected with the scanning line. The detection of the output voltage of the GOA unit in the GOA circuit of the liquid crystal panel is achieved, and therefore the specific grade of the GOA unit circuit is judged to have a fault, the detection effect of the GOA circuit is improved, and the difficulty of repairing the GOA circuit is reduced.
Referring to fig. 3, in some other embodiments, when the scan line connected to the output end of the GOA circuit to be detected can be electrically connected (i.e. laser welded) to all the data lines in the effective display area. The voltage of the data line which is electrically connected with the scanning line is detected to obtain the output voltage of the output end of the GOA circuit to be detected, and the method comprises the following steps:
and S40, detecting the voltage of a pin which is electrically connected with any data line on the chip on film to obtain the output voltage of the output end of the GOA circuit to be detected.
Referring to fig. 6, if the output end of the GOA circuit to be detected is g1, the output end of the GOA circuit is g1 and is electrically connected to all data lines (data lines d1, d2, e.g.. gtorener, dn) in the effective display area, and only the voltage of any one of the pins on the flip-chip film, which is electrically connected to the data lines d1, d2, e.g.. gtorener, dn, correspondingly, is detected, so as to obtain the output voltage of the output end of the GOA circuit to be detected.
The scanning lines connected with the output end of the to-be-detected GOA circuit can be electrically connected with all the data lines in the effective display area, namely, the scanning lines connected with the output end of the to-be-detected GOA circuit can be in short circuit with all the data lines in the effective display area, and the voltage of all the data lines in the effective display area is the same as that of the output end of the to-be-detected GOA circuit. And because the chip on film is used for providing a driving signal for each data line, and the chip on film is provided with a plurality of pins with the number corresponding to that of the data lines. Therefore, the output voltage of the output end of the GOA circuit to be detected can be obtained only by detecting the voltage of the pin which is electrically connected with any data line on the chip on film.
Compared with the situation that the output end of a GOA circuit to be detected (namely the output end of a GOA unit to be detected) is electrically connected with any data line in the effective display area, as the scanning line connected with the output end of the GOA circuit to be detected can be electrically connected with all the data lines in the effective display area, when detection is carried out, only the pin of the data line electrically connected with the flip chip film needs to be detected at will, and the voltage of the pin electrically connected with the data line electrically connected with the scanning line on the flip chip film does not need to be detected, so that the detection process is more convenient, the operation is easy, and the detection efficiency is improved.
The method comprises the steps that a scanning line connected with the output end of a GOA circuit to be detected is electrically connected with at least one data line; and detecting the voltage of the data line electrically connected with the scanning line to obtain the output voltage of the output end of the GOA circuit to be detected. Therefore, the output voltage of the GOA unit in the GOA circuit is indirectly obtained by detecting the voltage of the data line, the output voltage of the GOA unit in the GOA circuit of the liquid crystal panel is detected, and the specific grade of GOA unit circuit fault is judged, so that the detection effect of the GOA circuit is improved, and the difficulty of repairing the GOA circuit is reduced.
Example two
The present embodiment is based on the first embodiment, and only the differences between the present embodiment and the first embodiment will be described below, and the same parts as the first embodiment will be omitted or abbreviated.
Referring to fig. 4 and 7, the method for detecting the GOA circuit of the liquid crystal panel of the present embodiment is applicable to a liquid crystal panel, where the liquid crystal panel includes: the detection method of the GOA circuit of the liquid crystal panel comprises the following steps of:
s10, electrically connecting the scanning line connected with the output end of the GOA circuit to be detected with at least one data line; the scanning line connected with the output end of the GOA circuit to be detected can be electrically connected with any one data line. For example, the scan line g1 is electrically connected to the data line d 1.
And S50, electrically connecting one end of the data line electrically connected with the scanning line connected with the output end of the GOA circuit to be detected with the test gasket on the liquid crystal panel, and testing the voltage of the test gasket in a cell test to obtain the output voltage of the output end of the GOA circuit to be detected.
The cell process of the liquid crystal panel comprises the following steps: the array substrate and the color filter substrate are spliced, then cut or split into single cells after splicing, liquid crystal is poured between the array substrate and the color filter substrate, and finally the cell sample plate is tested. And the array substrate of the cell is provided with a test gasket for testing.
One end of the data line electrically connected with the scanning line connected with the output end of the GOA circuit to be detected is electrically connected with the testing gasket on the liquid crystal panel, namely, one end of the data line d1 is electrically connected with the testing gasket, and only the voltage of the testing gasket needs to be tested in a cell test, so that the output voltage of the output end of the GOA circuit to be detected can be obtained. Thereby detecting the output voltage of the to-be-detected GOA unit in the GOA circuit.
Referring to fig. 7, the present application further provides a liquid crystal panel 100, where the liquid crystal panel 100 includes:
an effective display area, a GOA circuit (i.e. a left GOA circuit and a right GOA circuit respectively disposed at two lateral sides of the effective display area) for providing a driving signal to a plurality of scanning lines of the effective display area, and a chip on film for providing a driving signal to a plurality of data lines of the effective display area;
the GOA circuit includes a plurality of cascaded GOA units (not shown), and an output end of any one of the GOA units is connected to at least one of the data lines. Furthermore, any output end of the GOA unit can be electrically connected with any data line in the active display area (i.e. laser welding). Or, the scanning line connected to the output end of the GOA circuit to be detected may be electrically connected to all the data lines in the effective display area (i.e., laser welding).
And detecting the voltage of the pin corresponding to the electrical connection of the data line on the flip chip film and electrically connected with the scanning line to obtain the output voltage of the output end of the GOA circuit to be detected. The detection of the output voltage of the GOA unit in the GOA circuit of the liquid crystal panel is achieved, and therefore the specific grade of the GOA unit circuit is judged to have a fault, the detection effect of the GOA circuit is improved, and the difficulty of repairing the GOA circuit is reduced.
In some embodiments, the liquid crystal panel further includes a test pad, and one end of the data line connected to the output end of any of the GOA units is electrically connected to the test pad.
The array substrate of the cell is provided with a test gasket for testing, one end of the data line electrically connected with the scanning line connected with the output end of the GOA circuit to be detected is electrically connected with the test gasket on the liquid crystal panel, and the output voltage of the output end of the GOA circuit to be detected can be obtained only by testing the voltage of the test gasket in the cell test. Thereby detecting the output voltage of the to-be-detected GOA unit in the GOA circuit. Since the cell test is an indispensable step in the manufacturing process of the liquid crystal panel, no additional test equipment is needed for detecting the output voltage of the output end of the GOA circuit in the cell test, the cost is saved, and the detection efficiency is higher.
In summary, the liquid crystal panel of the present application electrically connects the scanning line connected to the output end of the GOA circuit to be detected to the at least one data line; and detecting the voltage of the data line electrically connected with the scanning line to obtain the output voltage of the output end of the GOA circuit to be detected. Therefore, the output voltage of the GOA unit in the GOA circuit is indirectly obtained by detecting the voltage of the data line, the output voltage of the GOA unit in the GOA circuit of the liquid crystal panel is detected, and the specific grade of GOA unit circuit fault is judged, so that the detection effect of the GOA circuit is improved, and the difficulty of repairing the GOA circuit is reduced.
The above description is only a preferred embodiment of the present application, and not intended to limit the scope of the present application, and all modifications and equivalents of the technical solutions that can be directly or indirectly applied to other related fields without departing from the spirit of the present application are intended to be included in the scope of the present application.
Claims (10)
1. The method for detecting the GOA circuit of the liquid crystal panel is characterized by being applicable to the liquid crystal panel, and the liquid crystal panel comprises the following steps: the detection method of the GOA circuit of the liquid crystal panel comprises the following steps of:
the method comprises the steps that a scanning line connected with the output end of a GOA circuit to be detected is electrically connected with at least one data line;
and detecting the voltage of the data line electrically connected with the scanning line to obtain the output voltage of the output end of the GOA circuit to be detected.
2. The method as claimed in claim 1, wherein the output terminal of the GOA circuit to be detected comprises an output terminal of any one of the GOA units in the GOA circuit.
3. The method for detecting the GOA circuit of the liquid crystal panel according to claim 2, wherein said electrically connecting the scan line connected to the output terminal of the GOA circuit to be detected with at least one data line comprises:
and welding the scanning line connected with the output end of the GOA circuit to be detected with any data line by laser.
4. The method for detecting the GOA circuit of the liquid crystal panel according to claim 2, wherein said electrically connecting the scan line connected to the output terminal of the GOA circuit to be detected with at least one data line comprises:
and welding the scanning line connected with the output end of the GOA circuit to be detected with all the data lines by laser.
5. The method for detecting the gate driver on array (GOA) circuit of the liquid crystal panel according to claim 3, wherein detecting the voltage of the data line electrically connected to the scan line to obtain the output voltage of the output terminal of the GOA circuit to be detected comprises:
and detecting the voltage of the pins, corresponding to the data lines, electrically connected with the scanning lines on the flip chip film, so as to obtain the output voltage of the output end of the GOA circuit to be detected.
6. The method for detecting the gate driver on array (GOA) circuit of the liquid crystal panel according to claim 4, wherein the detecting the voltage of the data line electrically connected to the scan line to obtain the output voltage of the output terminal of the GOA circuit to be detected comprises:
and detecting the voltage of a pin which is electrically connected with any data line on the chip on film to obtain the output voltage of the output end of the GOA circuit to be detected.
7. The method for detecting the gate driver on array (GOA) circuit of the liquid crystal panel according to claim 3, wherein the detecting the voltage of the data line electrically connected to the scan line to obtain the output voltage of the output terminal of the GOA circuit to be detected comprises:
and electrically connecting one end of the data line, which is electrically connected with the scanning line connected with the output end of the GOA circuit to be detected, with the test gasket on the liquid crystal panel, and testing the voltage of the test gasket in a cell test to obtain the output voltage of the output end of the GOA circuit to be detected.
8. The method for detecting the GOA circuit of the liquid crystal panel is characterized by being applicable to the liquid crystal panel, and the liquid crystal panel comprises the following steps: the detection method of the GOA circuit of the liquid crystal panel comprises the following steps of:
the method comprises the steps that a scanning line connected with the output end of a GOA circuit to be detected is electrically connected with at least one data line;
and detecting the voltage of the pins, corresponding to the data lines, electrically connected with the scanning lines on the flip chip film, so as to obtain the output voltage of the output end of the GOA circuit to be detected.
9. The method for detecting the GOA circuit of the liquid crystal panel is characterized by being applicable to the liquid crystal panel, and the liquid crystal panel comprises the following steps: the detection method of the GOA circuit of the liquid crystal panel comprises the following steps of:
the method comprises the steps that a scanning line connected with the output end of a GOA circuit to be detected is electrically connected with at least one data line;
and electrically connecting one end of the data line electrically connected with the scanning line connected with the output end of the GOA circuit to be detected with the test gasket on the liquid crystal panel, and testing the voltage of the test gasket in a cell test to obtain the output voltage of the output end of the GOA circuit to be detected.
10. A liquid crystal panel, comprising:
the display device comprises an effective display area, a GOA circuit and a chip on film, wherein the GOA circuit is used for providing driving signals for a plurality of scanning lines of the effective display area, and the chip on film is used for providing driving signals for a plurality of data lines of the effective display area;
the GOA circuit comprises a plurality of cascaded GOA units, the output end of each GOA unit is connected with at least one data line, the liquid crystal panel further comprises a test gasket, and one end of each data line connected with the output end of each GOA unit is electrically connected with the test gasket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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