Electrochromic device
US4447133A · kind A · utility
11Cited by
2References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 27, 1981 |
| Grant date | May 8, 1984 |
| Priority date | — |
| Expiry date | Apr 27, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/1524
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
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 30.degree. to 70.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 time and long life time of cycling of coloration and bleaching.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.