UV-stabilized electrochromic assembly based on poly(3,4-ethylenedioxythiophene) derivatives

US6403741B1 · kind B1 · 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: Jun 11, 2002
• Expiry date: May 27, 2019

Classification

• Technology area (CPC G): Physics
• CPC primary: G02F1/157
• 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 contains a mixed-in UV absorber.