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US 2019/0294015 A1Published application
Electrochromic display element, optical filter, lens unit, and imaging device
AssigneeRicoh Company, Ltd.
InventorsNaoki Ura, Fuminari Kaneko
Life of this patent
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Abstract
An electrochromic display element is provided. The electrochromic display element includes a pair of electrodes and an electrochromic layer disposed between the electrodes. The electrochromic layer contains a solvent, a supporting electrolyte, an anodic electrochromic molecule comprising a triarylamine derivative, and a cathodic electrochromic molecule comprising a viologen derivative. Concentrations of the triarylamine derivative and the viologen derivative in the electrochromic layer are each 4 mM or more.
Claims13
An electrochromic display element comprising:
- a pair of electrodes;
- and
- an electrochromic layer disposed between the electrodes, the electrochromic layer containing:
- a solvent;
- a supporting electrolyte;
- an anodic electrochromic molecule comprising a triarylamine derivative;
- and
- a cathodic electrochromic molecule comprising a viologen derivative,
- wherein concentrations of the triarylamine derivative and the viologen derivative in the electrochromic layer are each 4 mM or more.
6 more elements
Dependencies are inferred from the claim text.