Compositions – Liquid crystal compositions – Containing nonchiral aligning agents
Patent
1995-04-06
1998-12-08
Wu, Shean C.
Compositions
Liquid crystal compositions
Containing nonchiral aligning agents
25229901, 349123, 349128, 349129, 3692752, 428 1, C09K 1956, G02F 11337
Patent
active
058464522
ABSTRACT:
An optical storage medium with gray scale capability comprising: a plurality of facing substrates in series; alignment layers disposed on one or both sides of the substrates to give alignment layer pair(s) wherein at least one of the alignment layers of each of the alignment layer pair(s) is an optical alignment layer, and wherein the optical alignment layer(s) comprise anisotropically absorbing molecules or moieties; liquid crystal layers disposed between the alignment layer pair(s); wherein, each of the liquid crystal layer(s) comprises three or more alignment regions having three or more different alignment states; and, wherein the different alignment states are controlled by exposure of optical alignment layer(s) with polarized light of a wavelength or wavelengths within the absorption band of the anisotropically absorbing molecules or moieties therein, is described. The invention is also directed to compact disc, erasable compact discs, photographic storage devices, and storage displays.
REFERENCES:
patent: 4122027 (1978-10-01), Cole, Jr. et al.
patent: 4401369 (1983-08-01), Jones
patent: 4565424 (1986-01-01), Huffman et al.
patent: 4667020 (1987-05-01), Etzbach et al.
patent: 4780383 (1988-10-01), Garrett et al.
patent: 4886718 (1989-12-01), Eih et al.
patent: 4892392 (1990-01-01), Broer
patent: 4974941 (1990-12-01), Gibbons et al.
patent: 5032009 (1991-07-01), Gibbons et al.
patent: 5073294 (1991-12-01), Shannon et al.
patent: 5097029 (1992-03-01), Shannon
patent: 5202053 (1993-04-01), Shannon
patent: 5254655 (1993-10-01), Gibbons et al.
patent: 5296321 (1994-03-01), Kawanishi et al.
patent: 5298588 (1994-03-01), Gibbons et al.
patent: 5326865 (1994-07-01), Grasso et al.
patent: 5389285 (1995-02-01), Shannon et al.
patent: 5576862 (1996-11-01), Sugiyama et al.
"Novel Side-Chain Liquid Crystalline Polyester Architecture For Reversible Optical Storage" by Soren Hvilstead et al, 1995, American Chemical Society .
Gibbons Wayne M.
Schnelle Scott T.
Shannon Paul J.
Sun Shao-Tang
Alliant Techsystems Inc.
Goldberg Mark
Wu Shean C.
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