Optical: systems and elements – Holographic system or element – Using a hologram as an optical element
Patent
1991-04-01
1993-09-21
Howell, Janice A.
Optical: systems and elements
Holographic system or element
Using a hologram as an optical element
359 43, 359 53, 359 86, G02F 113, G02F 1133
Patent
active
052473740
ABSTRACT:
A double-layered type while/black super-twisted liquid crystal display device including a driving cell and a compensating cell in a layered structure wherein a substrate having no optical anisotropy is interposed between the driving cell and the compensating cell and a heater is arranged on the substrate is disclosed. The heater is composed of two electric conductive films, one of them being deposited on one surface of the substrate and the other one being deposited on the opposite surface of the same. In addition, a liquid crystal display device of the foregoing type wherein a heater comprising a single electric conductive thin film is interposed between the driving cell and the compensating cell is disclosed. Each thin film constituting the heater is deposited by employing a vaporizing process. Alternatively, each thin film constituting the heater may be deposited by employing a spattering process.
REFERENCES:
patent: 4119842 (1978-10-01), Hayden et al.
patent: 4643525 (1987-02-01), Haim
patent: 5044732 (1991-09-01), Kimura et al.
Gross Anita Pellman
Howell Janice A.
Stanley Electric Co. Ltd.
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