Electrochromic display device

Details Electrochromic display device Electrochromic display device

1979-06-04

1981-12-01

Davie, James W.

G02F 117

Patent

active

043033105

ABSTRACT:
An electrochromic display device comprises a display electrode, a counter electrode spaced from the display electrode, an electrolyte filled in the space between the display electrode and the counter electrode, and an electrochromic coloring layer formed on the display electrode to constitute a display section. That surface of the coloring layer which contacts the electrolyte has a higher density than that of the remaining portion. Preferably, both surface portions of the coloring layer which contact the electrolyte and the display electrode, respectively are more dense than the remaining portion.

REFERENCES:
patent: 3708220 (1973-01-01), Meyers et al.
patent: 4123841 (1978-11-01), Yano et al.
patent: 4170406 (1979-10-01), Giglia et al.
patent: 4233339 (1980-11-01), Leibowitz et al.
Sichel et al., "Electrochromism in the Composite Material Au-WO.sub.3 ", Applied Physics Letters, vol. 31, No. 2, Jul. 15, 1977, pp. 109-111.
Schirmer et al., "Dependence of WO.sub.3 Electrochromic Absorption on Crystallinity", J. Electrochem. Soc. of Solid-State Science and Technology, May 1977, pp. 749-753.
Randin, "Chemical and Electrochemical Stability of WO.sub.3 Electrochromic Films in Liquid Electrolytes", J. of Electronic Materials, vol. 7, No. 1, pp. 47-63, 1978.
Journal of Electronic Materials, vol. 7, No. 1, pp. 47-63; J. Randin; 1978.

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