Push-button switch with liquid-crystal display

Details Push-button switch with liquid-crystal display Push-button switch with liquid-crystal display

1991-01-22

1992-07-28

Miller, Stanley D.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 83, G02F 113

Patent

active

051345056

ABSTRACT:
The present invention provides a switch in which a liquid-crystal panel is arranged on the top side of a push-button so that such information as characters, symbols and figures is capable of being displayed, wherein a plurality of light-emitting bodies which emit light in a number of colors are arranged below the light-emitting panel so that the color of the liquid-crystal panel is capable of being changed. The liquid-crystal panel on the top surface of the push-button is white in color, a diffusing plate is disposed below the liquid-crystal panel, and the light-emitting bodies are arranged to oppose the periphery of the diffusing plate. As a result, the color of the overall display portion on the top surface of the push-button can be changed.

REFERENCES:
patent: 4196581 (1980-04-01), Nemoto
patent: 4294517 (1981-10-01), Jakubek
patent: 4357061 (1982-11-01), Crosby
patent: 4422728 (1983-12-01), Andreaggi
patent: 4514920 (1985-05-01), Shajrir et al.
patent: 4573766 (1986-03-01), Bournay, Jr. et al.
patent: 4755035 (1988-07-01), Kopish et al.
patent: 4989956 (1991-02-01), Wu et al.

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