Electrochromic display device

Details Electrochromic display device Electrochromic display device

1984-07-19

1987-05-05

Buczinski, Stephen C.

Chemical apparatus and process disinfecting, deodorizing, preser

Analyzer, structured indicator, or manipulative laboratory...

Means for analyzing liquid or solid sample

422 57, G02F 101

Patent

active

H00002640

ABSTRACT:
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.

REFERENCES:
patent: 3847468 (1974-11-01), Clasen et al.
patent: 4184751 (1980-01-01), Nicholson
patent: 4306774 (1981-12-01), Nicholson
patent: 4371236 (1983-02-01), Nicholson
patent: 4427267 (1984-01-01), Collins et al.
patent: 4456337 (1984-06-01), Nicholson
patent: 4474433 (1984-10-01), Nicholson et al.
U.S. Patent Application Ser. No. 06/530,041, filed 12/11/81, for Chemical Color Conversion of Electrochromic Display Material, now abandoned.

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