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:
Aug. 05, 2025
Filed:
Mar. 14, 2022
Naoki Ura, Kanagawa, JP;
Hiroyuki Takahashi, Kanagawa, JP;
Naoki Ura, Kanagawa, JP;
Hiroyuki Takahashi, Kanagawa, JP;
Ricoh Company. Ltd., Tokyo, JP;
Abstract
Provided is an electrochromic display element including a first substrate, a first electrode over the first substrate, a first electrochromic layer over the first electrode, an electrolyte layer over the first electrochromic layer, a second electrode over the electrolyte layer, and a second substrate over the second electrode. The first electrochromic layer contains tin oxide having an average primary particle diameter of less than 30 nm and an electrochromic compound containing a functional group bindable to the tin oxide. The amount by mole of the electrochromic compound per area of the first electrochromic layer is from 2.0×10mol/cmthrough 2.0×10mol/cm.