Color-stabilized electrochromic devices
AssigneeGentex Corporation
InventorsJeffrey R. Lomprey, Thomas F. Guarr
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Abstract
An electrochromic medium for use in a normally operating electrochromic device comprising an anodic material and a cathodic material wherein both of the anodic and cathodic materials are electroactive and at least one of the anodic and cathodic materials is electrochromic, an additive, and means associated with the additive for maintaining a colorless or nearly colorless electrochromic medium while the electrochromic medium is in a high transmission state relative to an electrochromic medium without the additive
Claims30
An electrochromic medium for use in a normally operating electrochromic device, comprising:
- (a) an anodic material and a cathodic material, wherein both of the anodic and cathodic materials are electroactive and at least one of the anodic and cathodic materials is electrochromic;
- and
- (b) a color-stabilizing additive, wherein the color-stabilizing additive is more easily reduced than the cathodic material.
An electrochromic medium for use in a normally operating electrochromic device, comprising:
- (a) an anodic material and a cathodic material, wherein both of the anodic and cathodic materials are electroactive and at least one of the anodic and cathodic materials is electrochromic;
- and
- (b) a color-stabilizing additive, wherein the color-stabilizing additive is more easily oxidized than the anodic material.
Dependencies are inferred from the claim text.