Colour display device
CA 1293571 C · Owner: Stroomer, Martinus V.C. · Inventors: Stroomer, Martinus V.C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
PHN.11.740 13 14.7.1986, ABSTRACT, Colour display device. In a colour display device colour elements (17 18, 19, 21, 22, 23) are built up with the aid of picture cells (2) from juxtaposed rows of picture cells which are driven by line electrodes (3). The resolving power in the horizontal sense is increased by building up the colour elements from picture cells of different rows of picture cells. The period t1 which is required for driving a colour element is split up into sub-periods 1/2t1 during which period samples of the signal to be displayed (length t0) are presented to the column electrodes (4). Since notably for LCD-TV there applies that t1 > t0, these samples can be presented during …
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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 December 24, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 24, 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.