Title:
ELECTROCHROMIC DISPLAY DEVICE
Document Type and Number:
Japanese Patent JPS569792
Kind Code:
A
Abstract:
An electrochromic display device comprises; an electrolyte held between two substrates at least one of which is transparent. A display electrode is formed on a surface of one substrate and has an electrochromic substance film formed thereon, the surface being in contact with the electrolyte. A first counter electrode is formed on a counter surface of the other substrate in opposed spaced-apart relationship with respect to the display electrode, and a second counter electrode is formed on a face of either one of the substrates, the face being in contact with the electrolyte. Circuitry applies a first voltage between the display electrode and the first counter electrode to effect coloration of the display electrode, and applies a second voltage between the first and second counter electrodes to establish an electric field therebetween effective to remove a negative ion region which forms in the vicinity of the first counter electrode during coloration of the display electrode.
Inventors:
KANEKO NOBORU
TABATA JIYUNICHI
TABATA JIYUNICHI
Application Number:
JP8486079A
Publication Date:
January 31, 1981
Filing Date:
July 04, 1979
Export Citation:
Assignee:
SEIKO INSTR & ELECTRONICS
International Classes:
G02F1/163; G09G3/19; G09F9/30; (IPC1-7): G09F9/30; G09G3/16
Domestic Patent References:
| JPS5168200A | 1976-06-12 |
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