Electrochromic pane arrangement

US5859723A · kind A · utility

Assignee

• Flachglas Aktiengesellschaft · DE

Inventors

• Dirk Jodicke · Gelsenkirchen, DE
• Richard Anders Batchelor · Stockton, GB

Key dates

• Filing date: Jan 17, 1996
• Grant date: Jan 12, 1999
• Expiry date: Jan 17, 2016

Classification

• Technology area (CPC G): Physics
• CPC primary: G02F1/1339
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

An electrochromic pane arrangement is disclosed having a first transparent electrode substrate or glass pane and a second electrode substrate or glass pane arranged parallel to and at a distance from the first glass pane. An ion conducting layer is disposed adjoining the two electrode substrates and consists of a polymer matrix containing at least one salt including difficult to oxidize anions. The conducting layer also includes one dopant suitable for the provision of cations, preferably metal ions. A surface of the first electrode substrate faces toward the ion conducting layer and is a first transparent electrode layer. Adjacent to it is an actively electrochromic layer in surface contact with the ion conducting layer, preferably of tungsten trioxide. This ion conducting layer has a reversibly variable transparency and/or color as a result of absorption or emission of electrons via the first electrode layer and acceptance or emission of ions of the dopant from or to the ion conducting layer. A surface of the second electrode substrate faces toward the ion conducting layer and bears a second transparent electrode layer. Adjacent to it is a transparent layer in surface contact wit…