Electrochromic elements using antioxidants to suppress self-discharging
US7916379B2 · kind B2 · utility
1Cited by
9References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 18, 2009 |
| Grant date | Mar 29, 2011 |
| Priority date | — |
| Expiry date | Feb 18, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/1525
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention relates to the use of antioxidants of different kinds and concentrations in electrochromic elements having an ion conducting component to suppress self-discharging. In comparison to electrochromic elements known from prior art, electrochromic elements according to the invention show a significantly smaller increase in transmissivity for a period of time after the electric current necessary to decrease transmissivity is switched off. The use of sterically hindered amines and/or 1,3,5-trisubstituted phenols has proven particularly effective for this purpose.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.