Electrochromic device by oblique evaporation to improve the response of coloration and bleaching
US4390246A · kind A · utility
9Cited by
1References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 23, 1978 |
| Grant date | Jun 28, 1983 |
| Priority date | — |
| Expiry date | Oct 23, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/1524
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electrochromic device includes a layer of electrochromic material, such as tungsten oxide, which is deposited by oblique evaporation at an acute angle of incidence in the range of from 10.degree. to 90.degree. between the normal to the substrate and the direction of the evaporation. Due to the anisotropic topography achieved by the oblique evaporation, the layer of electrochromic material exhibits improved fast response and long life time of cycling of coloration and bleaching.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.