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. 08, 1991
Filed:
Apr. 14, 1989
Casio Computer Co., Ltd., Tokyo, JP;
Abstract
A liquid crystal shutter comprising a light source, a liquid crystal element including a pair of substrates and liquid crystal interposed between the substrates, a pair of polarizing plates formed on the outer surfaces of the substrates, and a heater for heating the liquid crystal element. At least one electrode is formed on the inner surface of either substrate, and an aligning orientating layer is formed on the electrode and the inner surface of the substrate. The polarizing axis of at least one of the polarizing plates extends either parallel or at right angles to the direction of the optical axis of a substrate having an optical anisotropy caused by a temperature gradient created over the liquid crystal element in a direction toward a periphery from a center of the liquid crystal element heated by the heater, and crossing at a certain degree with an arrangement direction of liquid crystal molecules oriented by the aligning orienting layer.