The IQ application will be unavailable on Sunday, November 24th, starting at 9:00am ET while we make system improvements. Access will be restored as quickly as possible.
Browse Prior Art Database

Electrochromic display device (USH0000264)

IP.com Disclosure Number: IPCOM000000263D
Original Publication Date: 1987-May-05
Included in the Prior Art Database: 2008-Mar-28

Publishing Venue

US Statutory Invention Registration (SIRs)

Related People

Nicholson, Margie M. Weismuller, Thomas P. [+details]
Other Related People:

Related Documents

Patent/Patent Application:


A chemically coupled color-changing matrix display device is disclosed wherein the display material is a surfactant-treated color changing metal-diphthalocyanine complex. For example, lutetium diphthalocyanine may be treated with a mixture of silicone glycol and imidazoline surfactants to provide a deposit having substantially the same color as electrolytically cycled deposits of the same material. Also disclosed is a non-electronic chemical sensing device comprising a surfactant-treated electrochromic metal diphthalocyanine complex. Upon exposure to a hazardous gas such as chlorine, the surfactant-treated material undergoes a change in color.