Electrochromic devices having a gradient of color intensities
First Claim
1. 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.
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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.
92 Citations
16 Claims
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1. 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
- one electrode layer;
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11. 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. - View Dependent Claims (12, 13, 14, 15, 16)
- one electrode layer;
Specification