Electrochromic display element and full-color electrochromic...

Details Electrochromic display element and full-color electrochromic... Electrochromic display element and full-color electrochromic...

2006-04-11

2009-11-17

Lester, Evelyn A. (Department: 2873)

Optical: systems and elements

Optical modulator

Light wave temporal modulation

C359S269000, C359S275000, C252S586000

Reexamination Certificate

active

07619803

ABSTRACT:
An electrochromic display element includes a pair of counter electrodes having therebetween an electrochromic compound represented by Formula (1), wherein the electrochromic compound becomes colored when being oxidized and becomes colorless when being reduced by a driving operation of the electrodes:wherein R1represents a substituted or unsubstituted aryl group; and R2and R3each represent a hydrogen atom or a substituent; X represents >N—R4, an oxygen atom or a sulfur atom; and R4represents a hydrogen atom or a substituent.

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patent: WO 03/001288 (2003-01-01), None

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