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Title:
ELECTROCHROMIC ELEMENT, OPTICAL FILTER, LENS UNIT, IMAGING DEVICE, AND WINDOW MATERIAL
Document Type and Number:
WIPO Patent Application WO/2019/073805
Kind Code:
A1
Abstract:
The present invention provides, as one example of an electrochromic (EC) element in which orthogonal colour separation is inhibited, an EC element provided with a pair of electrodes, a solvent, an anodic EC compound, and a cathodic EC compound. The EC element is characterized in that an anodic EC compound having an oxidized form for which the difference between the solvation free energy in water and the solvation free energy in octanol is 35 kcal/mol or higher, and a cathodic EC compound having a reduced form for which the difference between the solvation free energy in propylene carbonate and the solvation free energy in octanol is -35 kcal/mol or lower, are used therein.

Inventors:
KUBO Wataru (C/O CANON KABUSHIKI KAISHA, 30-2 Shimomaruko 3-chome, Ohta-k, Tokyo 01, 〒1468501, JP)
YAMADA Kenji (C/O CANON KABUSHIKI KAISHA, 30-2 Shimomaruko 3-chome, Ohta-k, Tokyo 01, 〒1468501, JP)
IGAWA Satoshi (C/O CANON KABUSHIKI KAISHA, 30-2 Shimomaruko 3-chome, Ohta-k, Tokyo 01, 〒1468501, JP)
ITO Yuto (C/O CANON KABUSHIKI KAISHA, 30-2 Shimomaruko 3-chome, Ohta-k, Tokyo 01, 〒1468501, JP)
KAWATA Isao (C/O CANON KABUSHIKI KAISHA, 30-2 Shimomaruko 3-chome, Ohta-k, Tokyo 01, 〒1468501, JP)
Application Number:
JP2018/035850
Publication Date:
April 18, 2019
Filing Date:
September 27, 2018
Export Citation:
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Assignee:
CANON KABUSHIKI KAISHA (30-2, Shimomaruko 3-chome Ohta-k, Tokyo 01, 〒1468501, JP)
International Classes:
G02F1/15; E06B3/66; E06B9/24; G03B11/00
Foreign References:
JP2008521031A2008-06-19
JP2017021327A2017-01-26
JP2016536438A2016-11-24
Other References:
HUGO, C. ET AL.: "Deep eutectic solvents (DESs) as low-cost and green electrolytes for electrochromic devices", GREEN CHEMISTRY, vol. 19, no. 7, 7 April 2017 (2017-04-07), pages 1653 - 1658, XP055513311, DOI: doi:10.1039/C7GC00347A
Attorney, Agent or Firm:
ABE Takuma et al. (C/O CANON KABUSHIKI KAISHA, 30-2 Shimomaruko 3-chome, Ohta-k, Tokyo 01, 〒1468501, JP)
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