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:
Jul. 09, 1991
Filed:
Dec. 04, 1987
Applicant:
Inventors:
Hiroyuki Sakayori, Machida, JP;
Ippei Kobayashi, Atsugi, JP;
Assignee:
Semiconductor Energy Laboratory Co., Ltd., Kanagawa, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F / ;
U.S. Cl.
CPC ...
350333 ; 3503 / ;
Abstract
A liquid crystal device can be driven by application of a unipolar electric field to a ferroelectric liquid crystal layer. Without application of an electric field, isotropic characteristics are observed because of a spiral arrangement of the liquid crystal molecules. Under the application of an electric field, a birefringence is observed because of liquid crystal molecules being aligned in one direction. The device can be driven by applying an electric field in one direction and removing the electric field.