Active matrix substrate, for use in a liquid crystal display and

Details Active matrix substrate, for use in a liquid crystal display and Active matrix substrate, for use in a liquid crystal display and

1997-03-12

1999-03-02

Sikes, William L.

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

349 43, 349143, G02F 11333, G02F 1136, G02F 11343

Patent

active

058778322

ABSTRACT:
An active matrix substrate includes a switching device; a scanning line electrically connected to the switching device; a signal line electrically connected to the switching device and arranged so as to cross the scanning line; an interlayer insulation layer formed over the switching device, the scanning line and the signal line, the interlayer insulation layer having a contact hole; and a picture element electrode provided on the interlayer insulation layer and electrically connected to the switching device through the contact hole. The picture element electrode has a recessed portion in the contact hole, and a buried portion formed of an insulation material is provided in the recessed portion so that a top surface of the buried portion and a top surface of the picture element electrode are at an identical level.

REFERENCES:
patent: 4833519 (1989-05-01), Kawano et al.
patent: 5003356 (1991-03-01), Wakai et al.
patent: 5056895 (1991-10-01), Kahn
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patent: 5466971 (1995-11-01), Higuchi
patent: 5500750 (1996-03-01), Kanbe et al.
patent: 5585951 (1996-12-01), Noda et al.
patent: 5592318 (1997-01-01), Majima et al.
patent: 5641974 (1997-06-01), den Boer et al.

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