Chemically coupled color-changing display

Details Chemically coupled color-changing display Chemically coupled color-changing display

1981-12-07

1984-06-26

Arnold, Bruce Y.

350353, G02F 123

Patent

active

044563370

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.

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