The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 14, 1999
Filed:
Mar. 27, 1998
Nobuhiko Ohashi, Kariya, JP;
Takeshi Kohama, Okazaki, JP;
Denso Corporation, Kariya, JP;
Abstract
When a liquid crystal cell is filled with smectic liquid crystal, first, smectic liquid crystal having an isotropic phase is supplied into the liquid crystal cell under a first pressure. Then, smectic liquid crystal having a smectic phase is further supplied into the liquid crystal cell under a second pressure higher than the first pressure. Accordingly, even if smectic liquid crystal having the isotropic phase and held in the liquid crystal cell is changed into the smectic phase to cause volumetric shrinkage thereof, an amount of smectic liquid crystal reduced by the volumetric shrinkage can be compensated by supplying smectic liquid crystal into the liquid crystal cell under the second pressure. As a result, the liquid crystal cell can be securely prevented from having vacancies therein.