Electrochromic display device
First Claim
1. An electrochromic display device comprising:
- a substrate;
a conductive electrode formed onto said substrate;
a protective layer formed onto said conductive electrode, said protective layer for preventing said conductive electrode from being corroded by an electrolyte;
a porous layer of an electrochromic material formed on said protective layer;
a counter electrode formed apart from said porous layer; and
an electrolyte disposed between said porous layer and said counter electrode.
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Accused Products
Abstract
An electrochromic display having enlarged surface area of the electrochromic material for rapid coloration and rapid bleaching yet fabricated so as to prevent corrosion of the electrode by the electrolyte. In a first embodiment, the display includes a conductive electrode formed on a substrate; a protective layer formed on the conductive electrode; a porous layer of an electrochromic material formed on the protective layer; a counter electrode formed apart from the porous layer; and an electrolyte disposed between the porous layer and the counter electrode. The protective layer is fabricated from a dense layer of an electrochromic material and the conductive electrode is fabricated from a metal non-reactive with the electrolyte. The porous layer is in direct contact with the conductive electrode. In a second embodiment, the electrode is made from a conductive material that is non-reactive with the electrolyte.
25 Citations
19 Claims
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1. An electrochromic display device comprising:
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a substrate; a conductive electrode formed onto said substrate; a protective layer formed onto said conductive electrode, said protective layer for preventing said conductive electrode from being corroded by an electrolyte; a porous layer of an electrochromic material formed on said protective layer; a counter electrode formed apart from said porous layer; and an electrolyte disposed between said porous layer and said counter electrode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An electrochromic display device, comprising:
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a conductive electrode formed of a metal non-reactive with an electrolyte; a porous layer of an electrochromic material formed on said conductive electrode; a counter electrode formed apart from said porous layer; and an electrolyte disposed between said porous layer and said counter electrode. - View Dependent Claims (10, 11, 12)
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13. An electrochromic display comprising:
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a conductive electrode formed from a metal providing an electrochromic metal oxide; a porous layer of an electrochromic material formed on said conductive electrode; a counter electrode formed apart from said porous layer; and an electrolyte disposed between said porous layer and said counter electrode. - View Dependent Claims (14, 15, 16, 17, 18)
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19. An electrochromic display device comprising:
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a conductive electrode formed from a material selected from the group consisting of gold, platinum, silver and tantlum; a porous layer of an electrochromic material formed on said conductive electrode, said porous layer including the product prepared by forming a film of a metal providing an electrochromic metal oxide on said conductive electrode and thereafter subjecting said metal film to anodic oxidation; a counter electrode formed apart from said porous layer; and an electrolyte disposed between said porous layer and said counter electrode.
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Specification