Electrochromic system with less than 30 seconds switching time
US5124833A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 11, 1990 |
| Grant date | Jun 23, 1992 |
| Priority date | — |
| Expiry date | Jul 11, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/163
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The invention relates to an electrochromic glazing consisting of two glass sheets (1, 4) coated with first and second transparent electroconductive layers (2, 5), separated by a layer of an electrochromic material (9), an electrolyte (8) and a counterelectrode (7), said transparent electroconductive layers (2, 5) each being provided with an electroconductive strip (3, 6) parallel to the length of the glazing, made of a material whose electric conductivity is high relative to that of transparent electroconductive layers (2, 5). The electroconductive strips (3, 6) are placed along the opposite edges of the glazing and are connected to a voltage generator which applies in coloring phase (or in fading phase), between two points A and B on the electroconductive strips (3, 6) a potential difference U.sub.1 =(V.sub.A -V.sub.B) (t) so that between point A on the electroconductive strip on the first electroconductive layer and a point R on the second electroconductive layers, directly facing point A, there is a potential difference U.sub.2 =(V.sub.A -V.sub.R) (t)=U.sub.o , where U.sub.o is constant and chosen from the stability range of the coloring (or fading) reaction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.