CN112415431A - Method for detecting short circuit failure of data line - Google Patents
Method for detecting short circuit failure of data line Download PDFInfo
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- CN112415431A CN112415431A CN201910779497.4A CN201910779497A CN112415431A CN 112415431 A CN112415431 A CN 112415431A CN 201910779497 A CN201910779497 A CN 201910779497A CN 112415431 A CN112415431 A CN 112415431A
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000001514 detection method Methods 0.000 claims abstract description 33
- 239000003086 colorant Substances 0.000 claims description 14
- 230000007547 defect Effects 0.000 description 3
- 125000004122 cyclic group Chemical group 0.000 description 2
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- 239000010409 thin film Substances 0.000 description 1
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Abstract
The invention discloses a method for detecting poor short circuit of a data line, which comprises a display module, the data line, a signal supply module and a color detection module, wherein the signal supply module consists of 2A signal lines, A is set to be an integer larger than 1, the data line is set to be 2B, B is set to be an integer larger than 1, the data line is respectively connected with the signal lines 1, 2, 3, 4, 2A-1, 2A-1 and 2A, when the data line is connected to the signal line 2A, the data line is connected in a circulating connection mode, each signal line represents a different color, the color superposition between adjacent signal lines can be obviously changed, and after the data lines are connected, whether the color is changed or not is observed. According to the invention, when the color changes, the wrong connection between the adjacent data lines which change is proved to occur, and when the color does not change, the wrong connection between the adjacent data lines is proved to not occur; by observing the change of the color, the user can visually understand the change of the color.
Description
Technical Field
The invention relates to the technical field of data line detection, in particular to a method for detecting poor short circuit of a data line.
Background
The display panel is manufactured through an Array (Array) process, a Cell (Cell) process, and a module (module) process. The Array process generally includes the preparation of gate lines and data lines, the preparation of thin film transistors, the preparation of pixel electrodes, and the like. Fig. 1 is a schematic diagram of a conventional display panel. As shown in fig. 1, the display panel includes a plurality of rows of gate lines and a plurality of columns of data lines defining a plurality of pixels. In the Array process, when gate lines are prepared, two "gate lines" (the gate lines are not connected to the gate driving circuit) are reserved in a frame (Fanout) area of the display panel as connection lines between the data lines and the source driving circuit, as shown in fig. 1, odd-numbered column data lines are connected to one of the connection lines DO, even-numbered column data lines are connected to the other connection line DE, the connection lines DO are connected to DO terminals of the source driving circuit for supplying data signals to the odd-numbered column data lines, and the connection lines DE are connected to DE terminals of the source driving circuit for supplying data signals to the even-numbered column data lines, so that the source driving circuit can independently input data signals to the odd-numbered column and even-numbered column data lines.
In the Array process, due to process defects, misoperation, process precision and the like, adjacent data lines may be shorted together (i.e., DDS is bad, which may cause display defects), such as the third and fourth columns of data lines from the left in fig. 1; therefore, after the Array process is completed, it is necessary to perform a detection (Array Test), and repair the data lines to improve the yield of the display panel when the DDS defect is detected.
The existing detection method is not visual and is not easy to observe, so that a method for detecting the short circuit failure of the data line is provided, and the purpose of judging whether the data line is short-circuited or not is achieved by observing the change of the color.
Disclosure of Invention
The invention aims to provide a method for detecting poor short circuit of a data line, and the method is used for solving the problems that a detection method in the prior art is not intuitive and is not easy to observe.
In order to achieve the purpose, the invention provides the following technical scheme: a method for detecting poor short circuit of a data line comprises a display module, the data line, a signal supply module and a color detection module, wherein the signal supply module is composed of 2A signal lines, A is set to be an integer larger than 1, the data line is set to be 2B, B is set to be an integer larger than 1, the data line is respectively connected with the signal lines 1, 2, 3, 4, 2A-1, 2A-1 and 2A, when the data line is connected to the signal line 2A, the data line is connected in a circulating connection mode, each signal line represents a different color, color superposition between adjacent signal lines can be obviously changed, and whether the color is changed or not is observed after the data lines are connected.
Preferably, the odd-numbered data lines are connected to odd-numbered signal lines, and the even-numbered data lines are connected to even-numbered signal lines.
Preferably, the colors on the signal lines are set to be red, yellow, green, blue and purple circularly.
Preferably, the color on the signal line can be increased or selected according to the requirement, but the color after the color superposition of two adjacent data lines is ensured to have a sharp contrast compared with the original color.
Preferably, the luminance of the pixels connected to the odd-numbered column data lines is determined by data signals in the odd-numbered column data lines, and the luminance of the pixels connected to the even-numbered column data lines is determined by data signals in the even-numbered column data lines.
Preferably, the signal supply module is configured to provide a data signal to the data line.
Preferably, the color detection module is used for detecting the color change of the product, and when the color changes, the color detection module proves that misconnection occurs between the adjacent changed data lines, and when the color does not change, the color detection module proves that misconnection does not occur between the adjacent data lines.
Preferably, the change in colour is arranged to be recognised by the human eye of a test person.
Preferably, the color change can be detected through a chromaticity detection device, when the color change is detected through the detection device, a compensation circuit needs to be arranged on the display module, the signal line and the data line are electrically connected with the detection module, the detection signal line is electrically connected with the compensation circuit, and the compensation circuit is used for generating a compensation signal after receiving a signal output by the signal line and sending the compensation signal to the source electrode driving circuit.
Compared with the prior art, the invention has the beneficial effects that: when the color changes, the wrong connection between the adjacent data lines which change is proved to occur, and when the color does not change, the wrong connection between the adjacent data lines is proved to not occur; by observing the change of the color, the user can visually understand the change of the color.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural diagram of the present invention.
In the figure: 1. a display module; 2. a data line; 3. and a signal supply module.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Example one
Referring to fig. 1, in an embodiment of the present invention, a method for detecting a short circuit failure of a data line includes a display module, a data line, a signal supply module, and a color detection module, where the signal supply module includes 2A signal lines, a is set to an integer greater than 1, the data line is set to 2B, and B is set to an integer greater than 1, the data line is respectively connected to the signal lines 1, 2, 3, 4, 1., 2A-1, 2A-1, and 2A, and when the data line is connected to the signal line 2A, the data line is connected in a cyclic connection manner, each signal line represents a different color, color superposition between adjacent signal lines may significantly change, and after the data lines are connected, whether the color changes is observed. The odd-numbered data lines are connected to the odd-numbered signal lines, and the even-numbered data lines are connected to the even-numbered signal lines. The colors on the signal lines are circularly arranged in a red, yellow, green, blue and purple mode, the colors on the signal lines can be increased or selected according to needs, and the colors obtained by overlapping the colors of two adjacent data lines are required to have bright contrast compared with the original colors. The brightness of the pixels connected with the odd-numbered column data lines is judged through the data signals in the odd-numbered column data lines, and the brightness of the pixels connected with the even-numbered column data lines is judged through the data signals in the even-numbered column data lines. The signal supply module is used for providing data signals for the data lines. The color detection module is used for detecting the color change of the product, and when the color changes, the color detection module proves that the changed adjacent data lines are in misconnection, and when the color does not change, the color detection module proves that the adjacent data lines are not in misconnection. The change in color is arranged to be recognized by the human eye of the tester.
Example two
Referring to fig. 1, in an embodiment of the present invention, a method for detecting a short circuit failure of a data line includes a display module, a data line, a signal supply module, and a color detection module, where the signal supply module includes 2A signal lines, a is set to an integer greater than 1, the data line is set to 2B, and B is set to an integer greater than 1, the data line is respectively connected to the signal lines 1, 2, 3, 4, 1., 2A-1, 2A-1, and 2A, and when the data line is connected to the signal line 2A, the data line is connected in a cyclic connection manner, each signal line represents a different color, color superposition between adjacent signal lines may significantly change, and after the data lines are connected, whether the color changes is observed. The odd-numbered data lines are connected to the odd-numbered signal lines, and the even-numbered data lines are connected to the even-numbered signal lines. The colors on the signal lines are circularly arranged in a red, yellow, green, blue and purple mode, the colors on the signal lines can be increased or selected according to needs, and the colors obtained by overlapping the colors of two adjacent data lines are required to have bright contrast compared with the original colors. The brightness of the pixels connected with the odd-numbered column data lines is judged through the data signals in the odd-numbered column data lines, and the brightness of the pixels connected with the even-numbered column data lines is judged through the data signals in the even-numbered column data lines. The signal supply module is used for providing data signals for the data lines. The color detection module is used for detecting the color change of the product, and when the color changes, the color detection module proves that the changed adjacent data lines are in misconnection, and when the color does not change, the color detection module proves that the adjacent data lines are not in misconnection. The color change can be detected by chromaticity detection equipment, when the color change is detected by the chromaticity detection equipment, a compensation circuit is required to be arranged on the display module, the signal line and the data line are electrically connected with the detection module, the detection signal line is electrically connected with the compensation circuit, and the compensation circuit is used for generating a compensation signal after receiving a signal output by the signal line and sending the compensation signal to the source electrode driving circuit.
The working principle of the invention is as follows: when the color changes, the wrong connection between the adjacent data lines which change is proved to occur, and when the color does not change, the wrong connection between the adjacent data lines is proved to not occur; by observing the change of the color, the user can visually understand the change of the color.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (9)
1. A method for detecting short circuit failure of a data line is characterized by comprising the following steps: the color display device comprises a display module, a data line, a signal supply module and a color detection module, wherein the signal supply module consists of 2A signal lines, A is set to be an integer larger than 1, the data line is set to be 2B, B is set to be an integer larger than 1, the data line is respectively connected with the signal lines 1, 2, 3, 4, 2A-1, 2A-1 and 2A, when the data line is connected to the signal line 2A, the data line is connected in a circulating connection mode, each signal line represents different colors, color superposition between adjacent signal lines can be obviously changed, and whether the colors are changed or not is observed after the data lines are connected.
2. The method for detecting the data line short circuit failure according to claim 1, wherein the method comprises the following steps: the odd-numbered data lines are connected to the odd-numbered signal lines, and the even-numbered data lines are connected to the even-numbered signal lines.
3. The method for detecting the data line short circuit failure according to claim 1, wherein the method comprises the following steps: the colors of the signal lines are set to be red, yellow, green, blue and purple circularly.
4. A method for detecting a data line short circuit failure as claimed in claim 3, wherein: the color on the signal line can be increased or selected according to the requirement, but the color after the color superposition of two adjacent data lines is required to be ensured to have a sharp contrast compared with the original color.
5. The method for detecting the data line short circuit failure according to claim 1, wherein the method comprises the following steps: the brightness of the pixels connected with the odd-numbered column data lines is judged through the data signals in the odd-numbered column data lines, and the brightness of the pixels connected with the even-numbered column data lines is judged through the data signals in the even-numbered column data lines.
6. The method for detecting the data line short circuit failure according to claim 1, wherein the method comprises the following steps: the signal supply module is used for providing data signals for the data lines.
7. The method for detecting the data line short circuit failure according to claim 1, wherein the method comprises the following steps: the color detection module is used for detecting the color change of the product, and when the color changes, the color detection module proves that the changed adjacent data lines are in misconnection, and when the color does not change, the color detection module proves that the adjacent data lines are not in misconnection.
8. The method for detecting the data line short circuit failure according to claim 7, wherein: the change in color is arranged to be recognized by the human eye of the tester.
9. The method for detecting the data line short circuit failure according to claim 7, wherein: the color change can be detected through chromaticity detection equipment, when the color change is detected through the detection equipment, a compensation circuit is required to be arranged on the display module, the signal line and the data line are electrically connected with the detection module, the detection signal line is electrically connected with the compensation circuit, and the compensation circuit is used for generating a compensation signal after receiving a signal output by the signal line and sending the compensation signal to the source electrode driving circuit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910779497.4A CN112415431A (en) | 2019-08-22 | 2019-08-22 | Method for detecting short circuit failure of data line |
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| CN201910779497.4A CN112415431A (en) | 2019-08-22 | 2019-08-22 | Method for detecting short circuit failure of data line |
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| CN112415431A true CN112415431A (en) | 2021-02-26 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH075481A (en) * | 1993-06-18 | 1995-01-10 | Fujitsu Ltd | Liquid crystal display panel and its inspecting method |
| KR20110071813A (en) * | 2009-12-21 | 2011-06-29 | 엘지디스플레이 주식회사 | Inspection device of liquid crystal display device |
| CN102116950A (en) * | 2009-12-30 | 2011-07-06 | 上海天马微电子有限公司 | Display panel with touch function and detection method thereof |
| CN105261317A (en) * | 2015-09-17 | 2016-01-20 | 京东方科技集团股份有限公司 | Detection method and detection device for short-circuited defect of data wires |
| CN105788500A (en) * | 2016-05-20 | 2016-07-20 | 京东方科技集团股份有限公司 | Positioning method and device of bad sub-pixels |
| CN106531039A (en) * | 2016-12-23 | 2017-03-22 | 深圳市华星光电技术有限公司 | Display device and pure-color picture detection method thereof |
| CN106935166A (en) * | 2015-12-31 | 2017-07-07 | 乐金显示有限公司 | Display panel and its inspection method |
-
2019
- 2019-08-22 CN CN201910779497.4A patent/CN112415431A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH075481A (en) * | 1993-06-18 | 1995-01-10 | Fujitsu Ltd | Liquid crystal display panel and its inspecting method |
| KR20110071813A (en) * | 2009-12-21 | 2011-06-29 | 엘지디스플레이 주식회사 | Inspection device of liquid crystal display device |
| CN102116950A (en) * | 2009-12-30 | 2011-07-06 | 上海天马微电子有限公司 | Display panel with touch function and detection method thereof |
| CN105261317A (en) * | 2015-09-17 | 2016-01-20 | 京东方科技集团股份有限公司 | Detection method and detection device for short-circuited defect of data wires |
| CN106935166A (en) * | 2015-12-31 | 2017-07-07 | 乐金显示有限公司 | Display panel and its inspection method |
| CN105788500A (en) * | 2016-05-20 | 2016-07-20 | 京东方科技集团股份有限公司 | Positioning method and device of bad sub-pixels |
| CN106531039A (en) * | 2016-12-23 | 2017-03-22 | 深圳市华星光电技术有限公司 | Display device and pure-color picture detection method thereof |
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