Method for making oxide based electrochromic display devices

Details Method for making oxide based electrochromic display devices Method for making oxide based electrochromic display devices

1981-10-30

1984-05-29

Hoffman, James R.

Coating processes

Electrical product produced

Integrated circuit, printed circuit, or circuit board

4271263, 4271265, 4271266, 427255, 4272553, 4272557, 350357, G02F 117

Patent

active

044514980

ABSTRACT:
A display device employing an oxide based anodic electrochromic material. By reactive ion plating iridium, rhodium or nickel in an atmosphere including oxygen and water vapor, an anodic electrochromic film exhibiting a good contrast ratio can be obtained. This film can independently be an element of the device. However, a high-performance device is provided by combining the film with a cathodic electrochromic material film. In a complementary device combining the anodic oxide film with the cathodic tungsten oxide film, a contrast ratio of 3.17 and a cyclic life of 10.sup.7 or more have been obtained.

REFERENCES:
patent: 3329601 (1967-06-01), Mattox
patent: 4112137 (1978-09-01), Zega
patent: 4116791 (1978-09-01), Zega
patent: 4170662 (1979-10-01), Weiss et al.
patent: 4193670 (1980-03-01), Giglia et al.
patent: 4258984 (1981-03-01), Beni et al.
patent: 4340278 (1982-07-01), Beni et al.
Mattox, J. Vac. Sci. Technol., vol. 10, No. 1, Jan./Feb. 1973, pp. 47-51, Fundamentals of Ion Plating.
Howson et al., Thin Solid Films, 58 (1979), 379-384, Reactive Ion Plating of Metal Oxides onto Insulating Substrates.
Schiavone et al., Appl. Phys. Lett. 35(10), Nov. 15, 1979, Electrochromic Iridium Oxide Films Prepared by Reactive Sputtering.

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