Electrochromic display device

Details Electrochromic display device Electrochromic display device

1979-10-29

1981-12-08

Gron, Teddy S.

Compositions

Radioactive compositions

Nuclear reactor fuel

252408, G02F 117, G02F 123

Patent

active

043044654

ABSTRACT:
An electrochromic display device has a polymer film on the display electrode. In the writing step the polymer film on the display electrode is oxidized to a colored, non-transparent form. In the erasing step the polymer film is reduced to a neutral transparent form. A film of polyaniline is used in a preferred embodiment. A film of polypyrrole is used in another embodiment.

REFERENCES:
patent: 3712709 (1973-01-01), Kenworthy
patent: 4142783 (1979-03-01), Engler et al.
Diaz, A. F., et al., IBM Tech. Discl. Bull., vol. 22, No. 4, pp. 1638, 1939 (Sep. 1979) and No. 3, p. 1188 (Aug. 1979).
Kaufman, F. B., et al., IBM Tech Discl. Bull., vol. 20, No. 5, pp. 2001-2004 (1977).
Diaz, A. F., et al., J.C.S. Chem. Comm., No. 14, pp. 635-636 (Jul. 19, 1979).
Mohilner, D. M., et al., J. Am. Chem. Soc., vol. 84, pp. 3618-3622 (1962).
Bacon, J., et al., J. Am. Chem. Soc., vol. 90, No. 24, pp. 6596-6599 (1968).

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