Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only
Reexamination Certificate
2006-06-19
2008-10-21
Nelms, David C. (Department: 2871)
Liquid crystal cells, elements and systems
Particular structure
Having significant detail of cell structure only
C349S142000
Reexamination Certificate
active
07440063
ABSTRACT:
A method of fabricating an FFS LCD is provided. The fabrication method comprises: forming a common electrode and gate metal on a board and etching them through a first mask process; forming a gate insulating layer, active layer and source/drain metal on the board; forming a channel in a TFT part, removing the gate metal in the pixel area part and opening a gate pad part; forming a passivation layer substantially on the board, and forming a contact hole on the TFT part, removing the active layer remaining from the pixel area part and exposing a gate pad part and a data pad part by a third mask process; and forming a pixel electrode substantially on the board, and forming a pixel electrode on regions contacting the drain electrode in the TFT part, having the opening in pixel area part and opened regions of the gate pad and data pad part through a fourth mask process.
REFERENCES:
patent: 7280176 (2007-10-01), Yuh et al.
patent: 2005/0128401 (2005-06-01), Lee
patent: 2006/0146256 (2006-07-01), Ahn
patent: 2006/0285050 (2006-12-01), Yoo et al.
Choi Seung Chan
Lee Hyun Kyu
LG Display Co. Ltd.
McKenna Long & Aldridge LLP
Nelms David C.
Vu Phu
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