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. 25, 2001
Filed:
Apr. 23, 1997
Masaaki Kabe, Kashiwa, JP;
Takashi Kaneko, Kashiwa, JP;
Mitsuhiro Koden, Kashiwa, JP;
Mitsuhiro Shigeta, Kashiwa, JP;
Nobuyuki Itoh, Noda, JP;
Other;
Abstract
A method of aligning a liquid crystal includes a step of fixing on a hot plate and heating a liquid crystal cell in which a liquid crystal composed of a ferroelectric liquid crystal material sealed between electrode substrates respectively having alignment films having applied thereto a uniaxial alignment by rubbing. According to the described method, a pressure is applied to the liquid crystal cell by a roller, and a portion subjected to an application of pressure is moved by moving the roller. Further, the liquid crystal is heated within a temperature range between a phase transition temperature of SmA phase SmC* phase and a temperature 10° C. below the phase transition temperature, and the portion subjected to an application of pressure is moved in the same direction as the rubbing direction, thereby achieving the C,orientation at higher yield. Within the described temperature range, by moving the portion in an opposite direction to the rubbing direction, a C,orientation can be always achieved at high yield (almost 100%). As a result, the C,orientation can be surely achieved in the liquid crystal display element with ease.