Optical: systems and elements – Holographic system or element – Using a hologram as an optical element
Patent
1994-03-02
1995-07-18
Sikes, William L.
Optical: systems and elements
Holographic system or element
Using a hologram as an optical element
359 48, 359 51, 359 68, G02F 11333, G02F 1137
Patent
active
054346886
ABSTRACT:
The object of this invention is to provide a light scattering liquid crystal display applicable to direct view type displays which realizes a structure with uniform-brightness and high-contrast. A liquid crystal display of this invention including a light scattering liquid crystal cell 10 comprising: polymer dispersed liquid crystal; a first surface and a second surface defining the liquid crystal cell 10; a background having black patterns 17, each occupying an area covering at least display pixel, and first openings 19 existing between the black patterns on the first surface; and opaque mask 21 having second openings 23 and shading the locations opposite to the first openings 19.
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patent: 4021945 (1977-05-01), Sussman
patent: 4626074 (1986-12-01), Crossland et al.
patent: 4707080 (1987-11-01), Fergason
patent: 4726662 (1988-02-01), Cromack
patent: 4732456 (1988-03-01), Fergason et al.
patent: 5099343 (1992-03-01), Margerum et al.
patent: 5103326 (1992-04-01), Fergason
patent: 5285298 (1994-02-01), Kaneko et al.
Saitoh Yukito
Teruya Mayumi
Drumheller Ronald L.
Duong Tai V.
International Business Machines - Corporation
Sikes William L.
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