Electrochromic device
AssigneeNippom Oil Co., Ltd
InventorsMasanobu Suga, Tsuyoshi Asano, Yoshinori Nishikitani
Life of this patent
Estimating the term…
Abstract
An electrochromic device having a pair of electrically conductive counter plates, an ion conductive material placed between the electrically conductive counter plates, a layer containing an electrochromic material provided in at least one of locations between the ion conductive material and the electrically conductive counter plates, at least one of the electrically conductive counter plates being a transparent electrically conductive plate having a transparent substrate and a transparent electrode disposed inside the transparent substrate, and at least one of the transparent electrically conductive plate having an ultraviolet absorbing layer containing an organic ultraviolet absorber between the transparent substrate and the transparent electrode.
Claims35
An electrochromic device comprising:
- a pair of electrically conductive counter plates;
- an ion conductive material placed between said electrically conductive counter plates;
- a layer containing an electrochromic material provided in at least one of locations between said ion conductive material and the electrically conductive counter plates;
- at least one of said electrically conductive counter plates being a transparent electrically conductive plate comprising a transparent substrate and a transparent electrode disposed inside the transparent substrate;
- and
- at least one of said transparent electrically conductive plates comprising an ultraviolet absorbing layer between said transparent substrate and said transparent electrode, said ultraviolet absorber layer comprising a resin material and an organic ultraviolet absorber chemically bonded to said resin material.
The electrochromic device as claimed in claim wherein said organic ultraviolet absorber is selected from the group consisting of 2-(2'-hydroxy-5'-methylphenyl)benzotriazole, 2-(2'-hydroxy-3',5'-bis(.alpha.,.alpha.-dimethylbenzyl)phenyl)benzotriazol e, 2-(2'-hydroxy-3',5'-di-t-butylphenyl)benzotriazole, 2-(2'-hydroxy-3'-t-butyl-5'-methylphenyl)-5-chlorobenzotriazole, octyl 3-(5-chloro-2H-benzotriazole-2-yl)-5-(1,1-dimethylethyl)-4-hydroxy-benzene propanoate, 2,4-dihydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-methoxybenzophenone-5-sulfonic acid, 2-hydroxy-4-n-octoxybenzophenone, 2,2'-dihydroxy-4,4'-dimethoxybenzophenone, 2,2',4,4'-tetrahydroxybenzophenone, 2-hydroxy-4-methoxy-2'-carboxybenzophenone, and mixtures thereof.
Dependencies are inferred from the claim text.