Liquid crystal display device having particular source wires...

Details Liquid crystal display device having particular source wires... Liquid crystal display device having particular source wires...

2006-08-09

2010-11-09

Qi, Mike (Department: 2871)

Liquid crystal cells, elements and systems

Particular excitation of liquid crystal

Electrical excitation of liquid crystal

C349S141000, C349S130000

Reexamination Certificate

active

07830463

ABSTRACT:
Development of 3-mask process to reduce the manufacturing cost of LCD-display device successively following 4-mask process. Opening formation process and pixel electrode formation process which is sequentially done following the opening formation process are treated with one photo-mask without using halftone exposure technology by forming source-drain wires comprising a low-resistance metal layer and a heat-resistant metal layer, the latter is capable of being removed with etching gas for etching gate insulating layer (and passivation insulating layer), giving protection means at least for the channel and the data line of the insulating gate transistor, forming openings in the insulating layers including the gate insulating layer with photosensitive resins having counter-taper cross sections, removing the exposed low-resistance metal in the openings, forming pixel electrode with the photosensitive resins as a lift-off material to lift off the conductive thin film for pixel electrode.

REFERENCES:
patent: 6843904 (2005-01-01), Kawasaki
patent: 7292288 (2007-11-01), Kawasaki
patent: 7321404 (2008-01-01), Kawasaki
patent: 7391483 (2008-06-01), Kawasaki
patent: 7417693 (2008-08-01), Kawasaki
patent: 2005/0157236 (2005-07-01), Kawasaki
patent: 2005/0168667 (2005-08-01), Kawasaki et al.
patent: 2005/0250308 (2005-11-01), Yamaguchi et al.
patent: 2006/0289871 (2006-12-01), Yoon

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