Method for manufacturing an electrochromic display device and de

Details Method for manufacturing an electrochromic display device and de Method for manufacturing an electrochromic display device and de

1982-01-25

1984-12-18

Punter, William H.

Coating processes

Electrical product produced

Integrated circuit, printed circuit, or circuit board

427259, 430319, G02F 101

Patent

active

044887817

ABSTRACT:
An electrochromic display matrix and method for making the same are disclosed wherein relatively small spacing distances between the individual electrochromic elements can be obtained. The method comprises exposing and developing photoresist through a pattern which defines strips and relatively narrow spacing distances. Solvent-permeable ion-conductive material and then solvent-permeable conductive material are applied over the photoresist. Photoresist solvent-remover is then applied, which releases the underlying photoresist and lifts off the ion-conductive material and conductive material to establish isolated regions of ion-conductive material and conductive material. Insulating paint is then applied in order to maintain isolation between the strips. The completed device, when addressed by a multiplexing method, is substantially free of any cross talk effects. High resolution display matrices are obtainable.

REFERENCES:
patent: 3853715 (1974-12-01), Romankiw
patent: 4123841 (1978-11-01), Yano et al.
patent: 4127853 (1978-11-01), Leibowitz
patent: 4174152 (1979-11-01), Giglia et al.
patent: 4257684 (1981-03-01), Nishiyama
patent: 4280754 (1981-07-01), Yano et al.
patent: 4320190 (1982-03-01), Ruedin
patent: 4326929 (1982-04-01), Minezaki et al.
patent: 4375318 (1983-03-01), Giglia
patent: 4375319 (1983-03-01), Wada et al.
Giglia et al., "Performance Improvements in WO.sub.3 -Based Electrochromic Displays", Conf.: 1981 Sid Intern. Sym. Digest of Papers, Vol. XII, New York, U.S.A. 28-30 Aug. 1981, pp. 76-77.

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