Electrochromic device comprising tandem layers of cathodic/anodic materials
AssigneeForkarpatent 1 Uppsala AB
InventorsAndris Azens, Guntars Vaivars, Monica Veszelei, Lisen Kullman, Claes-Goran Granqvist
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Abstract
An electrochromic device (10) for windows, displays, rear view mirrors, eye wear and other applications includes three layers (2), (4) and (5) of electrochromic materials and an electrolyte, with the transmittance of the layers (2) and (5) being variable by an applied electrical field, and protective layer (4) being transparent and not contributing to the coloration/bleaching of device. The protective layer (4) is made of the same electrochromic material as the electrochromic layer on the opposing side of the electrolyte.
Claims9
An electrochromic device comprising:
- a first electron conducting layer;
- a cathodic electrochromic layer on said first electron conducting layer;
- an acidic electrolyte layer on said cathodic electrochromic layer;
- a protective layer of the same cathodic electrochromic material as said cathodic electrochromic layer on said acidic electrolyte layer;
- an anodic counterelectrode on said protective layer;
- and
- a second electron conducting layer on said anodic counterelectrode.
An electrochromic device comprising:
- a first electron conducting layer;
- an anodic electrochromic layer on said first electron conducting layer;
- a basic electrolyte layer on said anodic electrochromic layer;
- a protective layer of the same anodic electrochromic material as said anodic electrochromic layer on said basic electrolyte layer;
- a cathodic counterelectrode on said protective layer;
- and
- a second electron conducting layer on said cathodic counterelectrode.
Dependencies are inferred from the claim text.