Liquid crystal cells – elements and systems – Particular structure – Particular illumination
Patent
1994-04-28
1997-09-09
Sikes, William L.
Liquid crystal cells, elements and systems
Particular structure
Particular illumination
G02F 11335
Patent
active
056661738
ABSTRACT:
An electro-optical apparatus comprising a pair of first and second devices, which are provided in an optical path extending from a light source and a screen for outputting a picture image thereon, the first and second devices each including a pair of first and second substrates each having electrodes and leads formed thereon, which sandwich therebetween an electro-optical modulating layer (comprising for example a liquid crystal composition) and a means for orienting the liquid crystal composition at least in an initial stage. The light transmission factor of the second device changes with time rotationally in the ratios of approximately 2.sup.0 to 2.sup.1 to 2.sup.2 to . . . to 2.sup.n (n is an arbitrary natural number). Thus, it is possible to realize tonal display, reduce the overall weight of the apparatus and improve the yield.
REFERENCES:
patent: 3645604 (1972-02-01), Ngo
patent: 3989355 (1976-11-01), Wilmer
patent: 4090219 (1978-05-01), Ernstoff et al.
patent: 4671618 (1987-06-01), Wu et al.
patent: 4758818 (1988-07-01), Vatne
patent: 4769713 (1988-09-01), Yasui
patent: 4824216 (1989-04-01), Perbet et al.
patent: 4842379 (1989-06-01), Oishi et al.
patent: 4843381 (1989-06-01), Baron
patent: 4921334 (1990-05-01), Akodes
patent: 5028121 (1991-07-01), Baur et al.
patent: 5103328 (1992-04-01), Numao
patent: 5121235 (1992-06-01), Matino et al.
patent: 5122791 (1992-06-01), Gibbons et al.
patent: 5124695 (1992-06-01), Green
patent: 5126865 (1992-06-01), Sarma
patent: 5128782 (1992-07-01), Wood
patent: 5132826 (1992-07-01), Johnson et al.
patent: 5142387 (1992-08-01), Shikama et al.
patent: 5157524 (1992-10-01), Dijon et al.
patent: 5264952 (1993-11-01), Fukutani et al.
patent: 5347378 (1994-09-01), Handschy et al.
Ross, 1988 International Display Research Conference, "720 .times. 400 Matrix Ferroelectric Display Operating at Video Frame Rate".
Mase Akira
Yamazaki Shunpei
Dudek James A.
Ferguson Jr. Gerald J.
Robinson Eric J.
Semiconductor Energy Laboratory Co,. Ltd.
Sikes William L.
LandOfFree
Electro-optical device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electro-optical device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electro-optical device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-73146