Electrochromic device having a current-reducing additive
US7031044B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 2, 2004 |
| Grant date | Apr 18, 2006 |
| Priority date | — |
| Expiry date | Jul 2, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/1503
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electrochromic medium for use in an electrochromic device comprising: at least one solvent; an anodic electroactive material; a cathodic electroactive material, wherein at least one of the anodic and cathodic electroactive materials is electrochromic; and a current-reducing additive, wherein the current-reducing additive comprises a polymer present in an effective concentration to materially reduce the current of the electrochromic medium upon application of an electrical potential, relative to an electrochromic medium without the current-reducing additive, while maintaining an electrochromic medium viscosity which facilitates acceptable production rates without a problematic degree of seal or other device component failure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.