Liquid crystal electro-optical element with adhesive particles
CA 1281114 C · Owner: Oka, Koichiro · Inventors: Harada, Takamasa; Ikeuchi, Hiroyuki; Ito, Kokichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In an electro-optical element comprising a liquid crystal, such as a smectic liquid crystal sealed, between two substrates arranged to confront each other with a space of an order of µm, if spacer particles for regulating the space between the substrates and phenol type curing agent-incorporated epoxy resin adhesive particles for moderating stresses generated by distortions or warps of the substrates are arranged in the space between the substrates, a minute uniform space, especially a uniform space of 1 to 3 µm effective for a ferroelectric liquid crystal, can be maintained between the substrates. In this structure alignmental, films are not disturbed at all. Furthermore even if a, nematic …
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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 March 5, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 5, 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.