Method for producing an electrochromic device and said electrochromic device
US7295361B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 19, 2003 |
| Grant date | Nov 13, 2007 |
| Priority date | — |
| Expiry date | Oct 22, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2001/1518
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention relates to a method for producing electrochromic devices, in particular that having a large working surface area and which does not produce a volumetric shrinkage and can operate during a long maintenance of electrocoloured state of an electrochromic compound, high control voltages and polarity inversion. The inventive electrochromic device comprises at least two electrodes (1, 2), at least one of them being optically transparent. A closed sealed space is formed between said electrodes and filled with the electrochromic compound which is embodied in the form of a solid-like film. The inventive method for producing the electrochromic device consists in prefabricating an initial electrochromic compound in the form of a dispersed electrochromic system which contains at least a suspension and/or colloid. The dispersed medium of said system is embodied in the form of an electrochromic solution containing a liquid solvent, cathode and anode components, a disperse phase being embodied in the form of a finely dispersed polymer. Afterwards, the initial electrochromic compound is deaerated, thereby eliminating dissolved oxygen and air introduced by said finely dispersed polymer…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.