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:
May. 29, 1984
Filed:
Oct. 30, 1981
Applicant:
Inventors:
Eigo Hashimoto, Sakado, JP;
Takanori Nanya, Sayama, JP;
Assignee:
Citizen Watch Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F / ;
U.S. Cl.
CPC ...
427 38 ; 4271263 ; 4271265 ; 4271266 ; 427255 ; 4272553 ; 4272557 ; 350357 ;
Abstract
A display device employing an oxide based anodic electrochromic material. By reactive ion plating iridium, rhodium or nickel in an atmosphere including oxygen and water vapor, an anodic electrochromic film exhibiting a good contrast ratio can be obtained. This film can independently be an element of the device. However, a high-performance device is provided by combining the film with a cathodic electrochromic material film. In a complementary device combining the anodic oxide film with the cathodic tungsten oxide film, a contrast ratio of 3.17 and a cyclic life of 10.sup.7 or more have been obtained.