The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 22, 2018
Filed:
Dec. 08, 2014
Canon Kabushiki Kaisha, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
The present invention provides an electrochromic device including a pair of electrodes and an electrochromic layer disposed between the pair of electrodes and containing different electrochromic materials having the same polarity, wherein in the case where two materials are selected from the different electrochromic materials having the same polarity in descending order of maximum absorbance in a color-display mode of the electrochromic layer and where the diffusion coefficients of the molecules of the two materials are compared with each other in the color-display mode, a smaller diffusion coefficient Dmin, a larger diffusion coefficient Dmax, and maximum absorbance Hof the molecules of the electrochromic material having the diffusion coefficient Dmax in the color-display mode satisfy Formula (5).1≤max/min≤(1+0.146/H)  (5)