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 display, and in particular, to a pixel structure of a liquid crystal display and a repair method for defective pixel structure lines. Background technique [0002] As shown in FIG. 1 and FIG. 2 , the TFT array substrate includes gate scan lines 1 and data scan lines 2 which are arranged on the lower substrate and intersect with each other, and are arranged in each area formed by the intersection of the gate scan lines 1 and the data scan lines 2 There are TFTs 7 , pixel electrodes 9 and common electrode lines 16 . The specific structure of the TFT7 is shown in the cross-sectional view of the TFT shown in FIG. 2 . The TFT7 includes a gate electrode 3 connected to the gate scan line 1, a source electrode 4 connected to the data scan line 2, and a drain electrode 5 connected to the pixel electrode 9. The drain electrode 5 is connected with the pixel electrode 9 through the contact hole 8 ; th...

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 One kind of maintenance equipment (cut repair), while the wiring operation and decap operation need to be performed on another kind of maintenance equipment (CVD repair), so the maintenance process is more complicated, and the maintenance equipment needs to be replaced

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