Liquid crystal display device
CA 1046618 A · Owner: Ncr Corporation · Inventors: Janning, John L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Title of the Invention, LIQUID CRYSTAL DISPLAY DEVICE Abstract of the Disclosure:, A liquid crystal display device having a series of transparent panels, the inner surface of each panel successively supporting a transparent electrode film and an alignment film which sympathetically aligns crystals of liquid crystal material into the direction of film growth. The alignment films have their directions of alignment alternately pointing in the horizontal or vertical direction. Liquid crystal material is placed between adjacent alignment films to form a series of liquid crystal display cells. A character may be formed by certain transparent electrodes in the device. To read out a selected …
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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 January 16, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 16, 1996.
- 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.