Phthalocyanine electrochromic display with improved cycle life

Details Phthalocyanine electrochromic display with improved cycle life Phthalocyanine electrochromic display with improved cycle life

1981-09-16

1984-02-21

Gron, Teddy S.

Compositions

Radioactive compositions

Nuclear reactor fuel

2524081, 252600, G02F 117

Patent

active

044326122

ABSTRACT:
An electrochromic display cell including a pair of enclosure plates, at least one of which is transparent, and a counter electrode and a display electrode disposed between the enclosure plates. A layer of electrochromic material is disposed on the display electrode. A liquid electrolyte material is disposed between the counter electrode and display electrode, the electrolyte material being mildly acidic and having a pH between 2 and 5. The layer of electrochromic material is preferably selected from the group consisting of a diphthalocyanine of a rare-earth element, yttrium and scandium.

REFERENCES:
patent: 3704057 (1972-11-01), Beegle
patent: 4117659 (1978-10-01), Takeshita
patent: 4184751 (1980-01-01), Nicholson
patent: 4306774 (1981-12-01), Nicholson
patent: 4371236 (1983-02-01), Nicholson
Kasuga, K. et al., JACS, vol. 102, pp. 4835-4836 (1980).
C.A., vol. 96, 208290j (1982).
C.A., vol. 94, 38588b (1981).

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