Auxiliary capacitor for a liquid crystal display device

Details Auxiliary capacitor for a liquid crystal display device Auxiliary capacitor for a liquid crystal display device

1998-02-19

2000-07-11

Parker, Kenneth

Liquid crystal cells, elements and systems

Particular excitation of liquid crystal

Electrical excitation of liquid crystal

349 44, 438 30, G02F 11343

Patent

active

060880716

ABSTRACT:
A liquid crystal display device having an array substrate, a counter substrate and liquid crystal material between these two substrates. The array substrate has a plurality of pixel electrodes and auxiliary capacitors corresponding to each of the pixel electrodes. The auxiliary capacitor has a MOS structure comprising a lower electrode made of semiconductor material, an upper electrode made of metal material, and insulating layer between these two electrodes. The upper electrode has a notch region. Therefore, hydrogen is doped into the semiconductor from the notch region, not only from the edge portion uncovered by the upper electrode. In accordance with this composition, it is possible to reduce the manufacturing cost, to realize high characteristic display, and so on.

REFERENCES:
patent: 5182620 (1993-01-01), Shimada et al.
patent: 5182661 (1993-01-01), Ikeda et al.
patent: 5721601 (1998-02-01), Yamaji et al.
patent: 5767927 (1998-06-01), Jang

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