Communications: electrical – Digital comparator systems
Patent
1974-10-29
1976-06-29
Fears, Terrell W.
Communications: electrical
Digital comparator systems
178 73D, 315169R, 3401732, G11C 1142
Patent
active
039672530
ABSTRACT:
A display device having a first substrate bearing a first electrode and a second substrate bearing a second electrode, and a layer of a display material such as liquid crystal and PLZT (lead-lanthanum-zirconate-titanate ceramics) disposed between the substrates. The second substrate also bears a display cell driving circuit including at least one shift register stage and a radiation-detecting element. The display cell driving circuit is positioned in the region of said second electrode and electrically coupled thereto so that radiation directed at the radiation detecting element from outside of said display device may selectively store data in the display-cell driving circuit and energize the electrodes to render the region of the display material in registration with the second electrode visually distinguishable from the surrounding display material. A plurality of at least the second electrode and associated display cell driving circuit may be provided.
REFERENCES:
patent: 3132325 (1964-05-01), Broy
patent: 3293441 (1966-12-01), Kazan
patent: 3341826 (1967-09-01), Lee
patent: 3393346 (1968-07-01), Lechner
patent: 3540011 (1970-11-01), Stupp
patent: 3801820 (1974-04-01), Eichelberger
Fears Terrell W.
Kabushiki Kaisha Suwa Seikosha
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