Electrochromic particles

US7270880B2 · kind B2 · utility

Assignee

• Ntera Limited · IE

Inventors

• Francois Pichot · Moissy-Cramayel, FR
• Udo Bach · Hilzingen, DE
• Nigel Leyland · Dublin, IE
• Donald Lupo · Frankfurt am Main, DE
• David Corr · Dublin, IE
• S. Nagaraja Rao · Dublin, IE

Key dates

• Filing date: Jan 30, 2004
• Grant date: Sep 18, 2007
• Expiry date: Jan 30, 2024

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/2998
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

The invention concerns discrete electrochromic particles comprising conducting, semiconducting or insulating nanoparticles having one or more electrochromic compounds adsorbed on the surface thereof. These particles may be deposited on an electrode in a single process step at a relatively low temperature, thereby allowing the use of heat-sensitive materials such as plastics as flexible substrates for the electrode.