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:
Jun. 09, 1981
Filed:
Nov. 16, 1979
Applicant:
Inventors:
Assignee:
Citizen Watch Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F / ;
U.S. Cl.
CPC ...
350349 ; 350341 ; 3503 / ;
Abstract
A guest-host liquid crystal display device which employs a pleochroic liquid crystal mixture having helical molecular ordering. To prevent the occurrence of a light-scattering turbid texture the helical molecular ordering is converted into a miss-matching state of an increased strain energy by a proper combination of surface alignment treatments applied to the facing surfaces of a pair of transparent plates that sandwich the liquid crystal layer.