Electrochromic display device
OwnerFrancois Pichot, Colm McAtamney +1inventors
InventorsFrancois Pichot, Colm McAtamney, Udo Bach
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Abstract
The invention concerns an electrochromic device comprising a single supporting substrate (1) on which are disposed a working electrode (6) which is electrochromic per se and/or bears an electrochromic material on at least a portion thereof; a counter electrode (3); and a layer of an electrically insulating material (4) separating the electrodes; wherein said electrochromic material has a major surface at least a portion of which forms at least a portion of an external surface of the device. The new device allows deposition of electrochromic coatings on a variety of substrates which need not be transparent.
Claims26
An electrochromic device comprising a single supporting substrate on which are disposed:
- (a) a working electrode comprising a porous layer of an electrically conducting or semiconducting material, the working electrode comprising material which is electrochromic per se and/or at least a portion of said working electrode bearing electrochromic material;
- (b) a counter electrode comprising a porous layer of an electrically conducting or semiconducting material, wherein said counter electrode does not have physical contact with said working electrode;
- (c) a layer of an electrically insulating material which is ion-permeable and which separates the working electrode and the counter electrode layers;
- and
- (d) an ion porous electrical current supporting layer interposed between the working electrode and the electrically insulating layers;
- wherein said electrochromic material has a major surface at least a portion of which forms at least a portion of an external surface of the device.
Dependencies are inferred from the claim text.