Solid electrochromic element
US4293194A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 20, 1979 |
| Grant date | Oct 6, 1981 |
| Priority date | — |
| Expiry date | Dec 20, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N99/00
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In a solid electrochromic element which comprises a lamination of a first electrode, a dielectric material layer, an electron blocking layer, a solid electrochromic substance layer and a second electrode and in which a voltage is applied between the first and the second electrode to thereby cause coloration of the solid electrochromic substance layer, the electron blocking layer is formed by two layers, of which the layer adjacent to the electrode to which a positive voltage is applied is formed by an N-type semiconductor and the layer adjacent to the electrode to which a negative voltage is applied formed by a P-type semiconductor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.