Method for fabrication liquid crystal display device and...

Details Method for fabrication liquid crystal display device and... Method for fabrication liquid crystal display device and...

2008-07-29

2008-07-29

Dudek, James A (Department: 2871)

Liquid crystal cells, elements and systems

Particular excitation of liquid crystal

Electrical excitation of liquid crystal

C349S114000

Reexamination Certificate

active

07405776

ABSTRACT:
An LCD is fabricated using a diffraction mask with transmissive, semi-transmissive, and opaque regions. The semi-transmissive region permits formation of a transmission, reflection, or pixel electrode, depending on the type of LCD being fabricated, using the same masking process as that to produce contact holes in an insulating film and a conductive layer. Photoresist exposed through the semi-transmissive region is partially removed during developing that completely removes photoresist in the transmissive or opaque region. The contact holes are formed in the region in which the photoresist is completely removed, the photoresist and underlying conductive layer in the semi-transmissive region are then removed, and the remaining photoresist is stripped.

REFERENCES:
patent: 6650380 (2003-11-01), Song
patent: 6833882 (2004-12-01), Lee
patent: 6847413 (2005-01-01), Park et al.
patent: 2004/0233361 (2004-11-01), Ha et al.

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