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:
Oct. 22, 1996
Filed:
Oct. 05, 1994
Katsutoshi Nakamura, Hiratsuka, JP;
Shuzo Kaneko, Chigasaki, JP;
Etsuro Kishi, Sagamihara, JP;
Hirokatsu Miyata, Yokohama, JP;
Masaaki Shibata, Ninomiyamachi, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A liquid crystal device is constituted by a pair of substrates, and a chiral smectic liquid crystal assuming at least two stable states disposed between the two substrates. At least one of the substrates is subjected to a uniaxial aligning treatment in two directions including a normal direction and a reverse direction substantially opposite to the normal direction. The liquid crystal is placed in an alignment state such that the liquid crystal provides an apparent tilt angle .theta.a which is a half of an angle between said two stable states, a tilt angle H and a pretilt angle .alpha. with respect to a substrate surface, and forms smectic layers forming an inclination angle .delta. from a normal to the substrate surfaces satisfying: H/2<.theta.a.ltoreq.H and H>.alpha.+.delta.. According to the liquid crystal device, an undesirable liquid crystal molecular movement along the substrates is effectively suppressed.