Electrochromic device
AssigneeNippon Oil Co., Ltd.
InventorsTsuyoshi Asano, Shinji Ohshima, Yoshinori Nishikitani
Life of this patent
Estimating the term…
Abstract
An electrochromic device comprises an ion conductive layer containing an electrochromic polymer that has a bipyridine ion pair structure and a metallocene structure and/or a dihydroxyphenaizine structure. The device has low leakage current and reduced remnant coloration after a long time use.
Claims3
An electrochromic device having an ion con conductive layer between a pair of electrically conductive substrates at least one of which is transparent wherein said ion conductive layer containing an electrochromic polymer which is a reaction product of a polymer having reactive groups and an organic compound having both a structure exhibiting cathodic electrochromic properties and a structure exhibiting anodic electrochromic properties and functional groups reactive to said reactive groups.
Dependencies are inferred from the claim text.