Multi-colored displays utilizing encapsulated liquid crystals
CA 1261951 A · Owner: Manchester R & D Partnership · Inventors: Fergason, James L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to use of liquid crystal material encapsulated in a containment medium to produce a controlled colored or multi-colored output, for example, in response to the application removal, and variation in an electric field. A non-pleochroic dye may be in the containment medium itself, in the liquid crystal material itself or both the, object of the dye being to color light. Incident light impinging on the encapsulated liquid crystal material, which is mounted on in, or with, respect to a support medium is isotropically scattered in the absence of an electric field, and using the principle of total internal reflection (or opticalinterference or both) a relatively large …
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 September 26, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 26, 2006.
- 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.