Laser repair structure and method for TFT-LCD

Details Laser repair structure and method for TFT-LCD Laser repair structure and method for TFT-LCD

2008-07-15

2010-06-08

Font, Frank G (Department: 2883)

Liquid crystal cells, elements and systems

Particular excitation of liquid crystal

Electrical excitation of liquid crystal

C349S039000, C349S054000, C349S055000, C349S192000

Reexamination Certificate

active

07733431

ABSTRACT:
A laser repair structure and method for TFT panel. A first metal conductor is located in the source-drain layer and having a contact hole to the pixel electrode, and the region of the first metal conductor is within the region of the storage capacitance line. To repair a white defect of a pixel, make extending portions of the first metal conductor to overlap with the gate line of the previous pixel so as to electrically connect them by the laser irradiation. Another choice is setting two second metal conductors located in the gate-electrode layer and partially overlapped with the data line and the first conductor separately, then using laser irradiation to electrically connect one second metal conductor to repair the white defect of a pixel or electrically connect two second metal conductors to repair an open-circuited data line.

REFERENCES:
patent: 2006/0092342 (2006-05-01), Lee
patent: 2004-061689 (2004-02-01), None
“Office Action of Taiwan counterpart application”, issued on Oct. 21, 2009, p. 1-p. 6.

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