Reflective liquid crystal display with gate covering semiconduct

Details Reflective liquid crystal display with gate covering semiconduct Reflective liquid crystal display with gate covering semiconduct

1997-07-22

2000-11-28

Parker, Kenneth

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

349 43, G02F 11335, G02F 1136

Patent

active

061542644

ABSTRACT:
In a reflective liquid crystal display, source/drain electrodes are formed on an insulation substrate and separated from each other. A pixel electrode is provided which has an end portion unitary formed with the source electrode and the pixel electrode extending over the insulation substrate. A semiconductor layer extends over the insulation substrate in contact directly with a gap between the source/drain electrodes and also extends on at least respective parts of the source/drain electrodes for connecting the source/drain electrodes. A gate insulation film extends over entire parts of the semiconductor layer. A gate electrode extends on at least a part of the gate insulation film so that the gate electrode is positioned to cover the semiconductor layer and to be separated by the gate insulation film from the semiconductor layer for shielding the semiconductor layer from incident light. A reflective plate is formed over the pixel electrode so as to be separated from the gate electrode and from the semiconductor layer. An opposite electrode is supported on a surface of an opposite substrate so that the opposite electrode is separated by a space filled with a liquid crystal from the gate electrode and from the reflective plate and also that the opposite electrode faces to the gate electrode and the reflective plate.

REFERENCES:
patent: 4648691 (1987-03-01), Oguchi
patent: 5042918 (1991-08-01), Suzuki
patent: 5671031 (1997-09-01), Nakamura et al.
patent: 5724111 (1998-03-01), Mizobata et al.

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