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Method for repairing defect of liquid crystal display panel lines

A liquid crystal panel, repair method technology, applied in nonlinear optics, instruments, optics, etc.

Active Publication Date: 2014-03-26
NANJING CEC PANDA LCD TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Even if there are repair lines reserved on the PCB at this time, the repair cannot be realized due to the limitation of the connection method, so that the LCD panel can no longer be used.
The existing repair line and COF connection method adopts a fixed connection. When the number of COF is more than the number of repair lines, it will lead to the problem that some repair lines cannot be fully utilized.

Method used

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  • Method for repairing defect of liquid crystal display panel lines
  • Method for repairing defect of liquid crystal display panel lines
  • Method for repairing defect of liquid crystal display panel lines

Examples

Experimental program
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Embodiment 1

[0021] A liquid crystal panel defect repairing method provided by the present invention comprises the following steps:

[0022] Step 1: Set 6 repair lines on the PCB board, such as figure 1 As shown, the 6 repair lines were divided into two groups on average, each group consisted of 3 repair lines, one group on the left and one group on the right. The structures of the two groups were exactly the same. Taking the left group as an example, the three repair lines defining the left group are R1, R2 and R3 respectively. The PCB board is connected to the LCD panel by 12 COFs, and the 12 COFs are equally divided into two groups, 6 COFs in each group, and the two input ports in each COF are respectively connected to any two repair lines through zero-ohm resistors. And reserve a connection port with the COF input port on each repair line.

[0023] In this embodiment, since there are only three repair lines in each group, but there are 6 COFs, there will be two COFs connected to the...

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Abstract

The invention discloses a method for repairing a defect of liquid crystal display panel lines. The method mainly comprises the steps that repairing lines are connected with a COF through a zero-ohm resistor, and the repairing lines are selected to repair broken lines according to the number and the position of broken lines. Improvement is carried out on the connecting mode of the repairing lines and a COF input port on a PCB, and therefore a liquid crystal panel cannot be repaired originally is repaired, not many repairing lines needs to be arranged, the repairing lines is fully utilized, the repairing efficiency of the liquid crystal panel is effectively improved, and meanwhile the rejection rate of the liquid crystal panel is effectively reduced.

Description

technical field [0001] The invention belongs to the field of liquid crystal panel detection, and in particular relates to a method for repairing line defects of a liquid crystal panel. Background technique [0002] Thin-film transistor liquid crystal display (hereinafter referred to as TFT-LCD) is a kind of flat-panel display. Its display quality is closely related to resolution. The luminous point is called a pixel, and the resolution is generally expressed in the form of multiplication, such as the resolution of 1366*768, where 1366 is the number of pixels displayed in the horizontal direction of the effective display area, and 768 is the number of pixels displayed in the vertical direction. Each pixel is divided into three subpixels (Subpixel) of RGB. Generally, the three subpixels of RGB are arranged horizontally. For a 1366*768 resolution liquid crystal display, there will be 1366*3=4098 sub-pixels in the horizontal direction, and each sub-pixel in the horizontal direc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13G02F1/1362
Inventor 李尊懋
Owner NANJING CEC PANDA LCD TECH