Liquid crystal display device having polycrystalline silicon...

Details Liquid crystal display device having polycrystalline silicon... Liquid crystal display device having polycrystalline silicon...

2004-06-14

2008-10-28

Nelms, David C. (Department: 2871)

Liquid crystal cells, elements and systems

Particular excitation of liquid crystal

Electrical excitation of liquid crystal

C349S042000, C349S046000, C349S047000

Reexamination Certificate

active

07443457

ABSTRACT:
A method of fabricating an array substrate for a liquid crystal display device includes forming an alignment key on a substrate having a display region and a non-display region surrounding the display region; forming an amorphous silicon layer on the alignment key; crystallizing a predetermined portion of the amorphous silicon layer using the alignment key as a reference; patterning the amorphous silicon layer using the alignment key as a reference to form a polycrystalline silicon layer, the polycrystalline silicon layer being formed from the predetermined portion of the amorphous silicon layer; forming a gate insulating layer on the semiconductor layer; forming a gate electrode on the gate insulating layer using the alignment key as a reference; forming an interlayer insulating layer on the gate electrode; and forming source and drain electrodes on the interlayer insulating layer.

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