Electrochromic assembly based on poly(3,4-ethylenedioxythiophene) derivatives and a UV-stabilized gel electrolyte

US6157479A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Helmut-Werner Heuer · Krefeld, DE
• Rolf Wehrmann · Krefeld, DE

Key dates

• Filing date: May 27, 1999
• Grant date: Dec 5, 2000
• Expiry date: May 27, 2019

Classification

• Technology area (CPC G): Physics
• CPC primary: G02F2001/1555
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

UV-stabilized electrochromic assemblies having a layer structure, characterized in that one layer contains an electrically conductive, electrochromic polydioxythiophene and a further layer contains an inorganic ion-storage compound based on metal oxides or a mixture of such ion-storage compounds, where the gel electrolyte is chemically crosslinked and contains chemically bound UV absorbers which cannot migrate as UV protection.