Optical: systems and elements – Holographic system or element – Using a hologram as an optical element
Patent
1991-07-19
1993-09-14
Sikes, William L.
Optical: systems and elements
Holographic system or element
Using a hologram as an optical element
359 59, 359 79, 359 87, 345 87, G02F 1133, G09G 336
Patent
active
052454509
ABSTRACT:
Each pixel electrode of a liquid crystal display device is divided into a plurality of subpixel electrodes, which are separated by a gap from each other, and a control capacitor electrode is provided opposite at least one of the subpixel electrodes through a first insulating film. The control capacitor electrode has a region extending the entire length of the gap so that a drive voltage can be applied to liquid crystal in the gap. The control capacitor electrode forms a control capacitor connected in series with a liquid crystal capacitor formed by the above-mentioned least one subpixel electrode between it and a common electrode corresponding thereto. An additional capacitor electrode, which is opposite the at least one subpixel electrode through a second insulating film, is formed, by which is formed an additional capacitor equivalently in parallel to the liquid crystal capacitor.
REFERENCES:
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patent: 5124695 (1992-06-01), Green
patent: 5126865 (1992-06-01), Sarma
patent: 5191452 (1993-03-01), Sarma
"Thin Film Transistor For Gray Scale LDC" IBM-Technical Disclosure Bulletin, vol. 33 No. 1A--Jun. 1990--pp. 481-482.
"Liquid Crystal Display Device" F. Makoto, Patent Abstracts of Japan, vol. 13, No. 157 (P 857), Apr. 17, 1989.
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Patent Abstracts of Japan, vol. 13, No. 157 (P857), Apr. 17, 1989 JP-A-63 316025.
"Active Matrix LCDs Using Gray-Scale in Halftone Methods" by K. R. Sarma et al., SID 89 Digest, May 16-18, 1989, pp. 148-150.
Inada Toshiya
Sunata Tomihisa
Ukai Yasuhiro
Duong Tai V.
Hosiden Corporation
Sikes William L.
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