Electrochromic display device with power leads insulated from the electrochromic medium

US6631023B1 · kind B1 · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Horst Berneth · Leverkusen, DE
• Uwe Claussen · Leverkusen, DE
• Ralf Neigl · Leverkusen, DE
• Dietrich Haarer · Bayreuth, DE
• Stephan C. Schmidt · Oberschleißheim, DE
• Wolfgang Jacobsen · Berlin, DE

Key dates

• Filing date: Mar 26, 2001
• Grant date: Oct 7, 2003
• Expiry date: Mar 26, 2021

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S359/90
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Electrochromic display device comprising a pair of glass or plastic plates or plastic films of which at least one plate or film or both plates or films is/are provided on one side each with an electrically conducting coating. At least one plate or film and its conductive coating is transparent. On at least one of the two plates or films, the electrically conductive layer is divided into separate segments which are individually connected to a power source and each has an electric lead from the edge of the device. The plates or films are joined via a sealing ring on the sides on which they are conductively coated. The volume formed by the two plates or films and the sealing ring is filled with an electrochromic medium. The electric leads to the segments are electrically insulated from the electrochromic medium. Methods for producing an electrochromic display device in which the segments and their power leads are first produced by removal of material from a continuous conductive coating or are applied to the plates or films and the electrically insulating layer is subsequently applied to the power leads. Method of operating an electrochromic display device in which the display device …