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. 26, 1984
Filed:
Dec. 07, 1981
Margie M Nicholson, San Marino, CA (US);
Rockwell International Corporation, El Segundo, CA (US);
Abstract
A display device is disclosed having a display matrix composed of electronically isolated display elements of a solid, insoluble display material which is capable of reversibly changing color by reaction with soluble reactants. The display matrix is driven by a drive matrix which electrochemically generates the soluble reactants which consist of oxidizing and reducing agents. A selective separator, which is permeable to electrolyte but impermeable to the generated soluble reactants, divides the interior of the device into two compartments; it confines the electrochemically generated soluble reactants and certain soluble chemical species to the compartment containing the generator electrodes and the display matrix and thereby prevents contamination of the other compartment having counter electrodes therein.