Electrochromic display with one porous separator

Details Electrochromic display with one porous separator Electrochromic display with one porous separator

1979-07-05

1982-01-12

Davie, James W.

G02F 117

Patent

active

043102204

ABSTRACT:
A porous separator is provided with an electrochromic display for containing an electrolyte, whereby a display electrode is continuously, electrically rotated to a counter electrode through the electrolyte. A filter separator is further provided together with the porous separator for urging the porous separator toward the display electrode and itself toward the counter electrode because of the elastic characteristic thereof. The filter separator can also contain the electrolyte. The porous separator provides a white background for the display electrode. The remaining electrolyte, except for the electrolyte in both the porous and the filter separators, is eliminated from the electrochromic display to provide a cavity within the electrolyte for cancelling the cubic expansion of the electrolyte when temperature rises. This cubic expansion cancelling cavity may be formed by injecting a bubble into the electrolyte. The cavity is settled at a fixed position by the provision of an electrolyte-impregnated separator means without any interference with the display and counter electrodes.

REFERENCES:
patent: 4021100 (1977-05-01), Giglia
patent: 4067644 (1978-01-01), Dlouhy et al.

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