Multilayer ceramic-based liquid crystal display

Details Multilayer ceramic-based liquid crystal display Multilayer ceramic-based liquid crystal display

1974-05-28

1976-05-04

Corbin, John K.

G02F 113

Patent

active

039543250

ABSTRACT:
The present invention provides an optical display device including a liquid crystal display integrated into a multilayer ceramic substrate assembly. The ceramic substrate may include cavities in which are embedded integrated circuits which activate the display. A three-dimensional electrical conducting network is used to interconnect the integrated circuits with a display pattern etched in a metalized layer on one surface of the ceramic substrate. Electrical connections to the display pattern are made directly from within the substrate, thereby eliminating the need to etch electrical access leads in the metallic surface. A single upper conducting plate is separated from the ceramic substrate by a window-like conducting spacer to form a cell in which a liquid crystal material may be contained. No display pattern nor electrical access leads are etched in the upper plate. Instead, the conducting spacer provides the only electrical connection to the upper plate. In accordance with one embodiment of the invention, a liquid crystal of the dynamic-scattering type is used in the display. In accordance with another embodiment of the invention, a liquid crystal of the field-effect type is used.

REFERENCES:
patent: 3505804 (1970-04-01), Hofstein
patent: 3603984 (1971-09-01), Heilmeier et al.
patent: 3647280 (1972-03-01), Klein et al.
patent: 3694053 (1972-09-01), Kahn
patent: 3716290 (1973-02-01), Borel et al.
patent: 3756694 (1973-09-01), Soref et al.

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