Method of driving electrochromic display means and electrochromic display means therefor
US4217579A · kind A · utility
34Cited by
3References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 2, 1977 |
| Grant date | Aug 12, 1980 |
| Priority date | — |
| Expiry date | Sep 2, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/163
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of driving an electrochromic display means and the electrochromic display means therefor which includes an electrochromic display cell having a counter electrode and a plurality of display electrodes, and a constant voltage source coupled through switching means to the electrochromic display cell in such a manner that the display electrodes to be colored are maintained at the same potential as that of the counter electrode, while the display electrodes to be erased are impressed with a predetermined positive voltage with respect too the counter electrode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.