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. 30, 1978
Filed:
May. 05, 1976
Donald John Barclay, Winchester, EN;
Colin Leonard Bird, Fair Oak, Eastleigh, EN;
Michael Henry Hallett, Chandlers Ford, EN;
David Horrobin Kirkman, West Moors, EN;
John Francis Minshull, Winchester, EN;
Charles Edward Owen, Chandlers Ford, EN;
International Business Machines Corporation, Armonk, NY (US);
Abstract
An electrochromic display device having first and second electrodes, and a plurality of display electrodes, all immersed in a liquid electrolyte. Drive means act to first generate a potential difference between said first and second electrodes to cause a color species to be deposited on said first electrode and, thereafter, act to generate a potential difference between said first electrode and selected ones of said plurality of display electrodes to cause the color species to be transferred to the selected ones of said plurality of display electrodes. Heptyl viologen dibromide is suggested as one possible electrolyte.