Metal insulation structure and liquid crystal display device
CA 1304807 C · Owner: Yoshida, Toshihiko · Inventors: Furuta, Kaoru; Yoshida, Toshihiko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In anodic oxidation, using a conversion voltage as high as 100 volts, the region of anodizable metal layer covered with a vapor-grown insulation layer is not anodized. It is believed that because the vapor-grown insulation layer is dense and has high dielectric strength and small leakage current, the layer functions as a protective mask even when a conversion voltage as high as 100 volts is impressed. A metal insulation structure as taught in this disclosure has vapor-grown insulation layers having apertures, depsoited on an anodizable metal layer, and these vapor-grown insulation layers act as protective masks against anodic oxidation, anodized layers formed by converting at least the …
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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 July 7, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 7, 2009.
- 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.