Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only
Patent
1996-02-20
1998-02-24
Bayerl, Raymond J.
Liquid crystal cells, elements and systems
Particular structure
Having significant detail of cell structure only
349 10, 349 88, 345 95, G02F 1133
Patent
active
057215979
ABSTRACT:
A method and apparatus in which the liquid crystal material having cross-over frequency is used for displaying an image, the liquid crystal material is dispersed in the transparent polymer in a phase-separated state, a first voltage signal having a first frequency lower than the cross-over frequency is applied to the liquid crystal material to orient reversibly the liquid crystal material to a first direction to display temporary information, then a second voltage signal having a magnitude higher than the first voltage is selectively applied to orient permanently the liquid crystal material to the first direction to display permanent information and a third voltage signal having a second frequency higher than the cross-over frequency is selectively applied to orient the liquid crystal material perpendicularly to the first direction, to erase the permanent information. The dynamic image and the memorized static image is displayed interchangeably by selecting the applied voltage signal having a specific frequency range.
REFERENCES:
patent: 4435047 (1984-03-01), Fergason
patent: 4606611 (1986-08-01), Fergason
patent: 4616903 (1986-10-01), Fergason
patent: 4944576 (1990-07-01), Lacker et al.
patent: 4946263 (1990-08-01), Vaz et al.
patent: 5270843 (1993-12-01), Wang
patent: 5351143 (1994-09-01), Sato et al.
patent: 5530566 (1996-06-01), Kumar
patent: 5530567 (1996-06-01), Takei
patent: 5621552 (1997-04-01), Coates et al.
patent: 5638194 (1997-06-01), Yamada et al.
Rumiko Yamaguchi, "Thermally Addressed Polymer Dispersed Liquid Crystal Displays", (1992), J.Appln. Phys. vol. 31 (1992) pp. L 1093-L 1095, Part 2, No. 84.
Ito Kensuke
Kakinuma Takeo
Koshimizu Minoru
Bayerl Raymond J.
Fuji 'Xerox Co., Ltd.
Vail Seth D.
LandOfFree
Display element using a liquid crystal substance and image displ does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Display element using a liquid crystal substance and image displ, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Display element using a liquid crystal substance and image displ will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1877845