Electron beam addressed liquid crystal light valve
CA 1301971 C · Owner: Ledebuhr, Arno G. · Inventors: Bleha, William P. Jr.; Welkowsky, Murray S.; Grinberg, Jan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
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 …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted May 26, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 26, 2009.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.