Pixel structure and maintenance method thereof

Abstract

The invention discloses a pixel structure and a maintenance method thereof, which relates to the technical field of liquid crystal display and solves the problems of complex maintenance progress and necessary maintenance device replacement for the traditional pixel structure. The invention embodiment is provided with a light shading part corresponding to data scanning lines on a grid and a grid layer of grid scanning lines. The light shading part is of a sealed structure and is connected to the grid scanning lines. The invention embodiment is mainly applied to the liquid crystal display, in particular to the liquid crystal display adopting TFT manufacture technology.

Description

technical field [0001] The invention relates to the technical field of liquid crystal displays, in particular to a pixel structure of a liquid crystal display and a repair method for defective lines of the pixel structure. Background technique [0002] Such as figure 1 and figure 2 As shown, the TFT array substrate includes a gate scanning line 1 and a data scanning line 2 arranged on the lower substrate to cross each other, and a TFT 7 and a pixel electrode 9 are arranged in each area formed by the intersection of the gate scanning line 1 and the data scanning line 2 and the common electrode line 16. For the specific structure of TFT7, see figure 2 The TFT sectional view shown, the TFT7 includes a gate 3 connected to the gate scanning line 1, a source 4 connected to the data scanning line 2, and a drain 5 connected to the pixel electrode 9, wherein the drain 5 passes through the contact hole 8 is connected to the pixel electrode 9; the TFT 7 also includes a semiconduc...

AI Technical Summary

Problems solved by technology

[0007] In the above-mentioned maintenance process, if the deposited metal line crosses the common electrode line 16, the pixel electrode 9 on the upper part of the common electrode line 16 cannot be cut with a high-energy laser, otherwise the common electrode line 16 will be destroyed, so the pixel is cut at the end here. For electrode 9, it is necessary to use a laser with a lower energy, which makes the whole maintenance process more complicated

[0008] Since the above two cases include welding operation, cutting operation and wiring operation at the same time, for the cutting operation that needs to cross the common electrode line, it is necessary to use a laser with a smaller energy (called decap operation); since the welding operation and the cutting operation are the same maintenance equipment On, while the wiring operation and decap operation need to be in another maintenance equipment It is carried out on the computer, so the maintenance process is more complicated, and the maintenance equipment needs to be replaced

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