Electric lamp or space discharge component or device manufacturi – Apparatus
Patent
1989-03-03
1990-09-25
Miller, Stanley D.
Electric lamp or space discharge component or device manufacturi
Apparatus
350334, 350347E, 445 38, 445 39, 445 54, G02F 113
Patent
active
049589164
ABSTRACT:
A liquid crystal device including a ferroelectric liquid crystal disposed between plates treated to enforce a particular ferroelectric molecular orientation to the plates. The devices employ alone or in combination non-planar boundary conditions, polar boundary conditions, boundaries with multiple physical states, intrinsic spontaneous splay distortion of the polarization orientation field, combined ferroelectric and dielectric torques, layers tilted with respect to the plates. The plates are spaced by a distance sufficiently small to ensure unwinding of the helix typical in a bulk of the material to form either monostable, bistable or multistable states which exhibit novel electro-optic properties. The liquid crystal is responsive to an externally applied electric field, temperature or the like to make a light valve or other electro-optical device.
REFERENCES:
patent: 3701368 (1972-10-01), Stern
patent: 3704512 (1972-12-01), Siegel
patent: 4367924 (1983-01-01), Clark et al.
patent: 4550039 (1985-10-01), Glaser et al.
patent: 4563059 (1986-01-01), Clark et al.
patent: 4810931 (1989-03-01), McKenna et al.
patent: 4813767 (1989-03-01), Clark et al.
Clark Noel A.
Lagerwall Sven T.
Gallivan Richard F.
Miller Stanley D.
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