Liquid crystal display device comprises a light-blocking layer a

Details Liquid crystal display device comprises a light-blocking layer a Liquid crystal display device comprises a light-blocking layer a

1996-07-19

1998-12-08

Ngo, Julie

Liquid crystal cells, elements and systems

Particular excitation of liquid crystal

Electrical excitation of liquid crystal

349 43, 349 46, 349111, G02F 1136, G02F 11333

Patent

active

058477810

ABSTRACT:
A liquid crystal display device includes transparent pixel electrodes disposed at intersections of scanning signal lines and data lines, and a plurality of thin film transistors each of which is provided correspondingly to one of the pixel electrodes. Each of the transistors includes an output electrode connected to one of the pixel electrodes, a control electrode connected to one of the scanning signal lines, and an input electrode connected to one of the data lines. A light-blocking member of a metal is disposed between the substrate and the first insulating film in such a manner as to cover spacing between the pixel electrodes and the data lines adjacent thereto, and a semiconductor layer is interposed between the first insulating film and a portion of the data lines overlying the light-blocking member. The method of making the liquid crystal display device includes the steps of etching a transistor semiconductor layer underlying the output electrode, in the thin film transistors using a photoresist mask formed on the transistor semiconductor layer such that an etched end of the transistor semiconductor layer on a side of the output electrode extends beyond an end of the output electrode, and etching an end of the semiconductor layer underlying the data lines, of the semiconductor layer using a metal film making up the data lines as a mask.

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patent: 5317433 (1994-05-01), Miyawaki et al.
patent: 5414547 (1995-05-01), Matsuo et al.
patent: 5610737 (1997-03-01), Akiyama et al.

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