Liquid-crystal display device

Details Liquid-crystal display device Liquid-crystal display device

1987-04-28

1989-08-15

Brigance, Gerald L.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340717, 340718, 350336, G09G 336

Patent

active

048579076

ABSTRACT:
A liquid-crystal display device comprising thin-film transistors arrayed in a matrix, wherein each of said thin-film transistors comprises an insulating substrate, a gate electrode disposed on said insulating substrate, a first insulating film covering said gate electrode, an a-Si semiconductor film disposed on said first insulating film, a second insulating film disposed on said a-Si semiconductor film, a p-doped n+-amorphous Si film forming both a source and a drain on said a-Si semiconductor film and said second insulating film, a third insulating film covering said p-doped n+-amorphous Si film, except for a part of said p-doped n+-amorphous Si film, and said a-Si semiconductor film, a source electrode and a drain electrode forming junctions with said part of the p-doped n+-amorphous Si film and covering said third insulating film, and a picture-element electrode, a part of which is superposed on said drain electrode.

REFERENCES:
patent: 4569574 (1986-02-01), Masaki et al.
patent: 4687298 (1987-08-01), Aoki et al.
patent: 4697331 (1987-10-01), Boulitrop et al.
patent: 4698627 (1987-10-01), den Boer et al.
patent: 4704002 (1987-11-01), Kibuchi et al.
patent: 4705358 (1987-11-01), Yamazaki et al.
patent: 4723838 (1988-02-01), Aoki et al.

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