Electronic watch and display device for such watch

Details Electronic watch and display device for such watch Electronic watch and display device for such watch

1977-05-13

1980-01-15

Bauer, Edward S.

58 50R, 350334, 350339, 350345, G02F 113

Patent

active

041836286

ABSTRACT:
An electro-optic display device having a partially transparent display cell and a semi-transparent mirror located behind said cell and arranged to transmit light waves within a first wave length band and to reflect light waves within a second wave length band. An electro-optic component is located behind the semi-transparent mirror and operates in a third wave length band which overlaps at least partially the first wave length band. The electro-optical component may be a plurality of photo cells used for recharging an accumulator for the display device and/or a light source transmitted across a light plate of frosted or clear glass to illuminate the display cell. The display cell is illuminated by either the reflected light waves or the light waves emitted from the light source.

REFERENCES:
patent: 3630015 (1971-12-01), Lehovec
patent: 3823551 (1974-07-01), Riehl
patent: 3869195 (1975-03-01), Aldrich et al.
patent: 4042294 (1977-08-01), Billings et al.
patent: 4095217 (1978-06-01), Toni et al.
Young: "Combination Reflective/Transmissive Liquid Crystal Display", IBM Technical Disclosure Bulletin, vol. 15, pp. 2435-2436, Jan. 1973. _

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