Method and dispenser for filling liquid crystal into lcd cell
CA 2108237 C · Owner: Ayumi Industry Co. Ltd. · Inventors: Abe, Taizo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention presents methods and dispensers which are used for a new way of filling liquid crystal into a LCD cell. The invented methods use the invented liquid crystal dispenser able to release liquid crystal with sufficient controllability at an evacuated atmosphere. Liquid crystal is filled through an inlet of an assembled LCD cell, or filled by laminating an upper substrate with a lower substrate on which liquid crystal has been dropped. The invented liquid crystal dispensers have an opening in addition to the opening for a capillary through which interior, air bubbles can be released out so as not to be released from the capillary.
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
- Filed October 12, 1993 and granted September 7, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 12, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 12, 2015.
- 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.