Regeneration of a memory state in electrochromic displays
US4150362A · kind A · utility
6Cited by
3References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 20, 1977 |
| Grant date | Apr 17, 1979 |
| Priority date | — |
| Expiry date | Jul 20, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/163
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A drive system is provided for an electrochromic display which includes an electrochromic material, a display pattern electrode and a counter electrode. The electrochromic phenomenon, or, reversible variations in the light absorption properties are developed when a predetermined voltage is applied between the display pattern electrode and the counter electrode. An erase pulse is applied to a bleached state display pattern electrode when a certain display pattern is held for a period longer than a memory period of the electrochromic display in order to regenerate the memory state and enhance the visibility.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.