Liquid crystal cells – elements and systems – Particular structure – Particular illumination
Patent
1996-05-02
1998-04-21
Sikes, William L.
Liquid crystal cells, elements and systems
Particular structure
Particular illumination
349 65, 349 68, 349 74, 349116, G02F 11335, G02F 11347, G02F 1133
Patent
active
057423679
ABSTRACT:
A liquid-crystal display device including a transmission-type liquid-crystal panel for displaying an image, a power source circuit for driving the liquid-crystal panel, a solar-cell panel disposed behind the liquid-crystal panel so as to be excited by external light transmitted through the liquid-crystal panel for generating electromotive force to thereby charge the power source circuit, and a liquid-crystal shutter provided between the liquid-crystal panel and the solar-cell panel for controlling the amount of external light to be transmitted to the solar-cell panel. In the device, the power source circuit can be sufficiently charged by the electromotive force from the solar-cell panel to prolong the operating time of the displayed device without increasing the area for installation of the solar-cell panel.
REFERENCES:
patent: 4139279 (1979-02-01), Laesser et al.
patent: 5153760 (1992-10-01), Ahmed
patent: 5289998 (1994-03-01), Bingley et al.
patent: 5406323 (1995-04-01), Tanigaki et al.
patent: 5523776 (1996-06-01), Hougham et al.
Malinowski Walter J.
Rohm & Co., Ltd.
Sikes William L.
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