Optical: systems and elements – Holographic system or element – Using a hologram as an optical element
Patent
1994-04-04
1996-04-02
Gross, Anita Pellman
Optical: systems and elements
Holographic system or element
Using a hologram as an optical element
G02F 11335
Patent
active
055046037
ABSTRACT:
A liquid crystal display for viewing at various angles with respect to a normal axis perpendicular to the display includes a polarizer layer having an absorbing axis, an analyzer layer having an absorbing axis substantially perpendicular to the absorbing axis of the polarizer layer, a liquid crystal layer disposed between the polarizer layer and the analyzer layer and having a director exhibiting an azimuthal twist through the layer with respect to the normal axis, a first electrode proximate to a first major surface of the liquid crystal layer, a second electrode proximate to a second major surface of the liquid crystal layer, the first and second electrodes being adapted to apply a voltage across the liquid crystal layer when the electrodes are connected to a source of electrical potential, and a compensator, including a positively birefringent O-plate compensator layer disposed between the polarizer layer and the analyzer layer with its principal symmetry axis oriented at a substantially oblique angle with respect to the normal axis.
REFERENCES:
patent: 4701028 (1987-10-01), Clerc
patent: 4889412 (1989-12-01), Clerc
patent: 5124824 (1992-06-01), Kozaki
patent: 5194975 (1993-03-01), Akatsuka
patent: 5196953 (1993-03-01), Yeh et al.
Clerc, et al., Highly Multiplexed Super Homeotropic LCD, Japan Display '89, p. 188 (1989).
Clerc, Vertically Aligned Liquid-Crystal Displays, SID 91 Digest, p. 758 (Society for Information Display 1991).
Motohiro, et al., Thin film retardation plate by oblique deposition, Applied Optics, vol. 28, p. 2466 (Jul. 1, 1989).
Yamamoto, et al., Full-cone Wide-Viewing-Angle Multicolor CSH-LCD, SID 91 Digest, p. 762 (Society for Information Display 1991).
Gunning, III William J.
Hale Leonard G.
Taber Donald B.
Winker Bruce K.
Deinken John J.
Dudek James A.
Gross Anita Pellman
Rockwell International Corporation
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