Electron-beam generating apparatus, image display apparatus having the same, and method of driving thereof
CA 2201243 C · Owner: Suzuki, Hidetoshi · Inventors: Suzuki, Hidetoshi; Sakuragi, Takamasa
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A driving circuit and a driving method capable of uniformly outputting electron beam at high speed from a multi-electron-beam source (50) having a plurality of cold cathode devices wired in a matrix to provide a, display apparatus having a characteristic of less unevenness in display luminance, a superior linearity in grayscale, and fast response. The electron-beam generating apparatus includes a multi-electron-beam source (50) where a plurality of cold cathode devices are wired with row wiring and column wiring arranged in a matrix form, a scanning circuit (2) connected to the row wiring, and modulation circuits (10 20, 30), connected to the column wiring. The modulation circuits (10, 20, …
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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
- Filed March 27, 1997 and granted September 10, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 27, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 27, 2019.
- 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
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.