CN103676246B - A kind of liquid crystal panel line defect restorative procedure - Google Patents
A kind of liquid crystal panel line defect restorative procedure Download PDFInfo
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- CN103676246B CN103676246B CN201310733186.7A CN201310733186A CN103676246B CN 103676246 B CN103676246 B CN 103676246B CN 201310733186 A CN201310733186 A CN 201310733186A CN 103676246 B CN103676246 B CN 103676246B
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Abstract
The invention discloses a kind of liquid crystal panel line defect restorative procedure, mainly will be connected by zero Europe resistance between repair line with COF, quantity and position according to broken string select repair line to repair.The connected mode of repair line and COF input port is improved on pcb board by the present invention, thus the liquid crystal panel of script unrepairable is repaired, without the need for arranging too much repair line, repair line is enable sufficiently to utilize, the remediation efficiency making liquid crystal panel is effectively improved, and effectively reduces the percent defective of liquid crystal panel simultaneously.
Description
Technical field
The invention belongs to liquid crystal panel detection field, particularly to a kind of liquid crystal panel line defect restorative procedure.
Background technology
Thin Film Transistor-LCD (being hereinafter called for short TFT-LCD) belongs to the one of flat-panel screens, its display quality is closely related with resolution, resolution can be used as the number of the luminous point that picture shows in representing territory, effective display area, each effective luminous point is referred to as pixel (pixel), resolution typically shows with multiplication form, such as the resolution of 1366*768, wherein 1366 is the pixel count that territory, effective display area horizontal direction shows, 768 represent the pixel count that vertical direction shows.Each pixel is divided into again tri-sub-pixels (Subpixel) of RGB, and generally, tri-sub-pixels of RGB are horizontally arranged.For liquid crystal display with 1366*768 resolution, have 1366*3=4098 sub-pixel in the horizontal direction, in horizontal direction, each sub-pixel is charged for it by a data lines, therefore in the case of 1366*768 resolution, have 4098 data lines, and in the case of more high-res, the quantity of data wire can be more, as under 4k2k (resolution 3840*2160), data wire can reach 3840*3=11520 root.If considering further that solution undercharge problem, make Double source(Double Data line), data wire can double, and for the situation of 4k2k, 3840*3*2=23040 root.
Each data lines has the possibility of broken string, if a data lines is the most separated, then shown below abnormal at breakpoint, this situation is referred to as line defect.In order to solve such situation, typically can repair line be set in panel.To repair the panel having line defect.When have that line defect produces when, with radium-shine, the two ends up and down of this data line have been connected reparation with the two ends of repair line respectively.
Repair line uses mode to be mainly at a COF(COF at present is chip on film, is called for short COF in bottom) two repair lines of both sides connection, the when that the region so controlled as this COF having two to break, can be repaired by these two repair lines.The most a plurality of the most recoverable number is 2 times of S-COF number, it is contemplated that the design of array base palte in face, the quantity of the repair line in face can be restricted, and this restriction can make 2 times much smaller than COF quantity of the quantity of the repair line on PCB.
The panel of the most increasing high-res emerges, and required COF quantity is more, and due to the restriction in face, the quantity of repair line can not be too many, and when the quantity of repair line is fewer than COF when, the most current repair line connection there will be the problem that remediation efficiency is the highest.Because repair line quantity is fewer than COF, then will necessarily occur that different COF receives in repair line identical on pcb board, so when two broken strings occur in a region corresponding for COF, after repairing by repair line, with it share repair line COF control region again broken string occurs time, then cannot repair.Even if now also having reserved repair line on pcb board, also cannot realize because of the restriction of connection repairing thus causing liquid crystal panel not re-use.Existing repair line uses fixing connection with the connected mode of COF, when COF quantity is more than the quantity of repair line, can cause the problem that some repair line can not make full use of.
Summary of the invention
Goal of the invention: present invention aims to the deficiencies in the prior art, it is provided that one can effectively be reduced the number of rejects and seconds rate, improves the restorative procedure of the liquid crystal panel of remediation efficiency.
Technical scheme: in order to reach foregoing invention purpose, the invention provides a kind of liquid crystal panel line defect restorative procedure, comprises the following steps:
Step 1: a plurality of repair line is set on pcb board in a liquid crystal display, pcb board is connected with liquid crystal panel by multiple COF, wherein two input ports in each COF are connected with any two repair lines respectively, if having the input port in two or more COF to share one repair repair line, the input port then retained in a COF is directly connected with repair line, and the input port in other COF is connected with repair line by zero Europe resistance；And in every repair line, reserve the connection jaws being connected with COF input port；
Step 2: the data wire in liquid crystal panel is detected, the quantity of detection broken data wire and position；
Step 3: the quantity of the testing result in step 2 with repair line compared, if the quantity of broken data wire is more than the quantity of repair line in liquid crystal panel, then liquid crystal panel can not be repaired；If the quantity of broken data wire is not more than the quantity of repair line in liquid crystal panel, it would be desirable to the input of the data wire of reparation with the output port of corresponding COF by radium-shine electrical connection；
Step 4: if there being the input port of two or more COF to use same repair line, the input port then retaining one of them COF is connected with repairing, after zero Europe resistance between another or the input port of multiple COF and former repair line is disconnected, then it is connected in the repair line of free time by zero Europe resistance；
Step 5: the outfan needing the data wire repaired with the electrical connection of corresponding repair line thus is formed reparation loop.
In described step 1, two input ports in each COF are all connected with repair line by zero Europe resistance, and the input port of COF so can be made to be connected with any one repair line flexibly, so that the reparation of liquid crystal panel is more convenient.
Beneficial effect: compared with prior art, the connected mode of repair line and COF input port is improved on pcb board by the present invention, thus the liquid crystal panel of script unrepairable is repaired, without the need for arranging too much repair line, repair line is enable sufficiently to utilize, the remediation efficiency making liquid crystal panel is effectively improved, and effectively reduces the percent defective of liquid crystal panel simultaneously.
Accompanying drawing explanation
Fig. 1 is the electrical block diagram of embodiments of the invention 1；
Fig. 2 is to repair two inputs and the connection diagram of repair line in front COF4 in embodiment 1；
Fig. 3 be embodiment 1 is repaired after the connection diagram of two inputs and repair line in COF4.
Detailed description of the invention
Below technical solution of the present invention is described in detail, but protection scope of the present invention is not limited to described embodiment.
Embodiment 1:
A kind of liquid crystal panel elder generation defect-restoration method therefor that the present invention provides, comprises the following steps:
Step 1: arrange 6 repair lines on pcb board, as it is shown in figure 1,6 repair lines are equally divided into two groups, often group is 3 repair lines, one group of the left side, one group of the right, and two groups of structures are identical.As a example by a group of the left side, three repair lines on one group of the left side of definition are respectively R1, R2, R3.Pcb board is by being connected with liquid crystal panel with 12 COF, 12 COF are also divided into two groups, left and right, often 6 COF of group, two input ports in each COF are connected with any two repair lines respectively by zero Europe resistance, and the reserved connection jaws with COF input port in every repair line.
In the present embodiment, due to only three repair lines in every group, but there are 6 COF, so it is identical with the connected mode of repair line to have two COF, wherein, two input ports of COF1 and COF4 are connected with repair line R2 and repair line R3 respectively, and two input ports of COF2 and COF5 are connected with repair line R1 and repair line R2 respectively, and two input ports of COF3 and COF6 are connected with repair line R1 and repair line R3 respectively.Meanwhile, repair line R1 leaves the connector with COF1 and COF4, repair line R2 leaves the connector with COF3 and COF6, repair line R3 leaves the connector with COF2 and COF5.
Step 2: the data wire in liquid crystal panel is detected with detector, the quantity of detection broken data wire and position；
Step 3: the quantity of the testing result in step 2 with repair line compared, if the quantity of broken data wire is more than 3 in liquid crystal panel, then liquid crystal panel can not be repaired；If the quantity of broken data wire is not more than 3 in liquid crystal panel, it would be desirable to the input of the data wire of reparation electrically connects with the output port of corresponding COF；
In the present embodiment, it is found to have three data lines broken strings after testing, it is two data lines and a data lines broken string of COF4 control of COF1 control, then by radium-shine method, the input of the data wire of broken string can be electrically connected with the outfan of corresponding COF1 and COF4.
Step 4: check the service condition of repair line, if the input port having two or more COF uses same repair line, the input port then retaining one of them COF is connected with repairing, after the zero Europe resistance being connected with former repair line by the input port of another or multiple COF disconnects, then it is connected in idle repair line by zero Europe resistance；Owing to two input ports of COF1 are connected with repair line R3 and repair line R2 respectively, as shown in Figure 2, according to the repair line of initial preset, the broken string in COF4 control area is also to be repaired by repair line R2, so repair line R2 is recycled, can not repair broken string.As it is shown on figure 3, now the zero Europe resistance being connected with repair line R2 with the corresponding input port controlling broken string in wherein COF4 can be taken out, and by zero Europe resistance, input port corresponding with control broken string in COF4 and repair line R1 are connected.
Step 5: the outfan needing the data wire repaired with the electrical connection of corresponding repair line thus is formed reparation loop.The outfan of two data wires controlled by COF1 in the present embodiment electrically connects with repair line R3 and R2 respectively, and the outfan of that data lines of the broken string controlled by COF4 electrically connects with repair line R1, material is thus formed reparation loop.
Claims (2)
1. a liquid crystal panel line defect restorative procedure, it is characterised in that: comprise the following steps:
Step 1: a plurality of repair line is set on pcb board in a liquid crystal display, pcb board is connected with liquid crystal panel by multiple COF, wherein two input ports in each COF are connected with any two repair lines respectively, if there being the input port in two or more COF to share a repair line, the input port then retained in a COF is directly connected with repair line, and the input port in other COF is connected with repair line by zero Europe resistance；And in every repair line, reserve the connection jaws being connected with COF input port；
Step 2: the data wire in liquid crystal panel is detected, the quantity of detection broken data wire and position；
Step 3: the quantity of the testing result in step 2 with repair line compared, if the quantity of broken data wire is more than the quantity of repair line in liquid crystal panel, then liquid crystal panel can not be repaired；If the quantity of broken data wire is not more than the quantity of repair line in liquid crystal panel, it would be desirable to the input of the data wire of reparation with the output port of corresponding COF by radium-shine electrical connection；
Step 4: if there being the input port of two or more COF to use same repair line, the input port then retaining one of them COF is connected with repair line, after zero Europe resistance between another or the input port of multiple COF and former repair line is disconnected, then it is connected in the repair line of free time by zero Europe resistance；
Step 5: the outfan needing the data wire repaired with the electrical connection of corresponding repair line thus is formed reparation loop.
Liquid crystal panel line defect restorative procedure the most according to claim 1, it is characterised in that: in described step 1, two input ports in each COF are all connected with repair line by zero Europe resistance.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310733186.7A CN103676246B (en) | 2013-12-27 | 2013-12-27 | A kind of liquid crystal panel line defect restorative procedure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310733186.7A CN103676246B (en) | 2013-12-27 | 2013-12-27 | A kind of liquid crystal panel line defect restorative procedure |
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| CN103676246A CN103676246A (en) | 2014-03-26 |
| CN103676246B true CN103676246B (en) | 2016-08-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111679460A (en) * | 2020-06-02 | 2020-09-18 | Tcl华星光电技术有限公司 | Method and device for analyzing defects of display panel |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110706667B (en) * | 2019-09-17 | 2021-06-01 | 深圳市华星光电半导体显示技术有限公司 | GOA circuit and display device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1916700A (en) * | 2005-08-17 | 2007-02-21 | 三星电子株式会社 | Liquid crystal display device repair system and method thereof |
| CN202600319U (en) * | 2012-05-08 | 2012-12-12 | 南京中电熊猫液晶显示科技有限公司 | Thin film transistor array substrate |
| CN103135299A (en) * | 2011-11-30 | 2013-06-05 | 上海中航光电子有限公司 | Liquid-crystal display device and repair method of defects thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| TW201216233A (en) * | 2010-10-15 | 2012-04-16 | Chunghwa Picture Tubes Ltd | Display device and repair method thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1916700A (en) * | 2005-08-17 | 2007-02-21 | 三星电子株式会社 | Liquid crystal display device repair system and method thereof |
| CN103135299A (en) * | 2011-11-30 | 2013-06-05 | 上海中航光电子有限公司 | Liquid-crystal display device and repair method of defects thereof |
| CN202600319U (en) * | 2012-05-08 | 2012-12-12 | 南京中电熊猫液晶显示科技有限公司 | Thin film transistor array substrate |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111679460A (en) * | 2020-06-02 | 2020-09-18 | Tcl华星光电技术有限公司 | Method and device for analyzing defects of display panel |
| CN111679460B (en) * | 2020-06-02 | 2022-02-01 | Tcl华星光电技术有限公司 | Method and device for analyzing defects of display panel |
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| CN103676246A (en) | 2014-03-26 |
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