Optical: systems and elements – Optical computing without diffraction
Patent
1994-12-21
1996-08-27
Fahmy, Wael M.
Optical: systems and elements
Optical computing without diffraction
359103, 359106, 359 76, 359 78, G02F 113, G02F 1133
Patent
active
055506640
ABSTRACT:
A liquid crystal display device comprising: a pair of substrates disposed in an opposed relation each having an electrode formed in a selected pattern on the opposed surface thereof, and an orientation film formed over the entire opposed surface including the electrode; a liquid crystal layer sandwiched between the substrates; and a driver means for shifting longitudinal molecular axes of the liquid crystal in the liquid crystal layer; said liquid crystal layer comprising a composition of a nematic liquid crystal having a splay elastic constant K.sub.11 and a twist elastic constant K.sub.22, and the ratio K.sub.11 /K.sub.22 being between which is not greater than 1; in which said nematic liquid crystal has a bistability such that the longitudinal molecular axes thereof are shifted from a first orientation state to a second orientation state within a plane generally parallel with respect to said substrates when a voltage is applied across said electrodes from said driver means, and are kept in the second orientation state when the application of the voltage is stopped.
REFERENCES:
patent: 4367924 (1983-01-01), Clark et al.
patent: 4697884 (1987-10-01), Amstutz et al.
patent: 4974940 (1990-09-01), Asano et al.
patent: 5188758 (1993-02-01), Baur et al.
Shinomiya Tokihiko
Tsuda Kazuhiko
Yamagishi Shinji
Abraham Fetsum
Conlin David G.
Fahmy Wael M.
Oliver Milton
Sharp Kabushiki Kaisha
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