Method for cooling a lamp backlighting module of a liquid crystal display
CA 2320932 A1 · Owner: Universal Avionics Systems Corporation - Instrument Division · Inventors: Dunn, William R.; Brannen, James M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is a method for cooling a lamp backlighting module (14) of a liquid crystal display (10). A preferred method of the present invention begins by providing a predetermined power input to a lamp (14). As power is provided to the lamp (14), the temperature of the lamp (14) is monitored. When the temperature of the lamp (14) rises to a first predetermined temperature one or more fans (26, 28) are turned on which are adapted to dissipate the heat generated by the lamp (14). After the fan(s) (26 28) cool the lamp (14) , to a second, lower predetermined temperature the fan(s) (26, 28) are turned , off. By using a fan (26 28) to dissipate heat generated by a lamp …
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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 February 19, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 19, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 19, 2021.
- 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.