G - Physics – 09 – G
Patent
G - Physics
09
G
375/39, 345/8
G09G 3/00 (2006.01) G02F 1/133 (2006.01)
Patent
CA 1301971
ELECTRON BEAM ADDRESSED LIQUID CRYSTAL LIGHT VALVE ABSTRACT OF THE DISCLOSURE An electron beam addressed crystal light valve (LCLV) produces an AC voltage across a liquid crystal layer from a single polarity electron beam, and exhibits very high resolution. A mirror (20) and a thin layer of partially conductive material (24) are deposited on a support membrane (22) on the electron beam side of the liquid crystal (8). The partially conductive layer (24) is divided into a series of pixel elements by a conductive matrix (26) which faces the electron beam. Electrons from the beam are absorbed by the partially conductive layer (24) to establish a negative voltage across the liquid crystal, and then flow out to the conductive matrix (26) to produce an AC voltage (30) prior to the next electron beam scan. The conductive matrix (26) is connected in circuit with a transparent electrode (18) which provides a voltage reference on the readout side of the liquid crystal. The elements of the device are designed with electrical parameters that produce a discharge rate from the partially conductive layer (24) fast enough to complete an AC cycle between successive electron beam scans, but slow enough for the liquid crystal to respond and produce an image.
549111
Bleha William P. Jr.
Grinberg Jan
Koda Nobuo J.
Ledebuhr Arno G.
Reif Phillip G.
Bleha William P. Jr.
Grinberg Jan
Hughes Aircraft Company
Koda Nobuo J.
Ledebuhr Arno G.
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