Dual active film electrochromic display device
US8284473B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 24, 2009 |
| Grant date | Oct 9, 2012 |
| Priority date | — |
| Expiry date | Jul 23, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2001/1555
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A dual active electrochromic device is a combination of at least two working electrodes that contain electrochromic materials and at least one counter electrode where the potentials between each working electrode and a counter electrode are independently supplied. No more than one electrode is reflective. The color of the device results from the additive color of the electrochromic materials and varies according to the potentials applied independently. The electrochromic materials can be electrochromic polymers that are deposited as film on substrates to form the working electrodes. The electrochromic device can be used for display or window applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.