Electrochromic devices having a gradient of color intensities
AssigneeFord Motor Company
InventorHulya Demiryont
Life of this patent
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Abstract
This invention is directed to electrochromic devices having a color intensity gradient. Specifically the electrochromic device comprises two substrates and therebetween: one electrode layer; an electrochromic layer; an ion conductive material; and another electrode layer in that order. At least one of the electrode layers is transparent and each electrode layer is in contact with a respective one of the substrates. The ion conductive layer is adapted to communicate ions to and from the electrochromic material upon the application of a voltage across the electrode layers. The electrochromic material has a continuously decreasing thickness gradient in at least one region when measured normal to the plane of an electrode layer.
Claims16
A method for forming regions of an electrochromic device adapted to provide a color intensity gradient during operation of said electrochromic device which comprises two substrates and therebetween:
- one electrode layer;
- an electrochromic material;
- an ion conductive material;
- and another electrode layer in that order, at least one of said one electrode layer and said other electrode layer being transparent and each electrode layer being in contact with a respective one of said substrates, said ion conductive layer being adapted to communicate ions to and from said electrochromic material upon application of a voltage across said electrode layers, which method comprises:
- providing said electrochromic material in a continuously decreasing thickness gradient in at least one region when measured normal to the plane of an electrode layer.
An electrochromic device which comprises two substrates and therebetween:
- one electrode layer;
- an electrochromic material;
- an ion conductive material;
- and another electrode layer in that order, at least one of said one electrode layer and said other electrode layer being transparent and each electrode layer being in contact with a respective one of said substrates, said ion conductive layer being adapted to communicate ions to and from said electrochromic material upon application of a voltage across said electrode layers, said electrochromic material being a continuously decreasing thickness gradient in at least one region when measured normal to the plane of an electrode layer.
Dependencies are inferred from the claim text.