Liquid crystal display driver
CA 1278889 C · Owner: Sharp Kabushiki Kaisha · Inventors: Nishimura, Toshio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is disclosed a liquid crystal display driver based on a 1/4-duty binary-voltage driving system. The driver comprises a driver for generating at least four kinds of common signals and a ROM for generating at least eleven kinds of segment signals, wherein the Von/Voff ratio of the effective value is set to be greater than about 1.7.
Read the whole patent
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 8, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 8, 2008.
- 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.