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:
Feb. 21, 1984
Filed:
Sep. 16, 1981
Applicant:
Inventors:
Margie M Nicholson, San Marino, CA (US);
Frank A Pizzarello, Yorba Linda, CA (US);
Assignee:
Rockwell International Corporation, El Segundo, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G02F / ;
U.S. Cl.
CPC ...
350357 ; 2524081 ; 252600 ;
Abstract
An electrochromic display cell including a pair of enclosure plates, at least one of which is transparent, and a counter electrode and a display electrode disposed between the enclosure plates. A layer of electrochromic material is disposed on the display electrode. A liquid electrolyte material is disposed between the counter electrode and display electrode, the electrolyte material being mildly acidic and having a pH between 2 and 5. The layer of electrochromic material is preferably selected from the group consisting of a diphthalocyanine of a rare-earth element, yttrium and scandium.