Electrochromic indicating device

US6207292A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Horst Berneth · Leverkusen, DE
• Uwe Claussen · Leverkusen, DE
• Dietrich Haarer · Bayreuth, DE
• Jochen Schaller · Lenggries, DE

Key dates

• Filing date: Mar 31, 1999
• Grant date: Mar 27, 2001
• Expiry date: Mar 31, 2019

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/12271
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

Electrochromic display devices, whose plates having conductive coatings are subdivided into segments which are electrically separated from one another, can be contacted individually and, between the plates, contain a solvent, specific electrochromic substances and optionally conductive salts, are distinguished by excellent edge definition and high contrast.