Self-supporting pigment layers for electrochromic display
First Claim
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1. A varaible light transmission device which comprises light transmitting substrate having a persistent electrochromic material as a light modulating material, a counter-electrode, and a .[.self-supporting.]. .Iadd.porous separator .Iaddend.layer comprising a pigment and an ion-conducting material .Iadd.in a binding medium .Iaddend.in contact with said .Iadd.light modulating .Iaddend.material and counter-electrode.
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Abstract
An electrochromic data display and imaging device which may be formed by sandwich arrangement of the imaging area and the counter-electrode area, with a suitable self-supporting ion-conductive layer between.
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8 Claims
- 1. A varaible light transmission device which comprises light transmitting substrate having a persistent electrochromic material as a light modulating material, a counter-electrode, and a .[.self-supporting.]. .Iadd.porous separator .Iaddend.layer comprising a pigment and an ion-conducting material .Iadd.in a binding medium .Iaddend.in contact with said .Iadd.light modulating .Iaddend.material and counter-electrode.
Specification