Solid state complementary electrochromic display devices
First Claim
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1. A solid state complimentary electrochromic display device comprising:
- a substrate made of an optically transparent material;
a first electrode which is contact with said substrate and made of an optically transparent material;
a fist solid state electrochromic material which is in contact with said first electrode, permits an oxidation-reduction reaction, and is one of a reduction coloration type electrochromic material and an oxidation coloration type electrochromic material;
a solid state ion permeable insulating layer which is in contact with said first electrochromic material layer and is made of halogenide;
a second solid state electrochromic material layer which is in contact with said ion permeable insulating layer, permits the oxidation-reduction reaction, and is the other of a reduction coloration type electrochromic material and an oxidation coloration type electrochromic material; and
a second electrode which is in contact with said second electrochromic material layer;
whereby on applying a voltage in which the electrode in contact with the reduction coloration type electrochromic material layer is negative and the electrode in contact with the oxidation coloration type electrochromic material layer is positive, the first and second solid state electrochromic material layers are simultaneously colored, and on applying a voltage in which the electrode in contact with the reduction coloration type electrochromic material layer is positive and the electrode in contact with the oxidation coloration type electrochromic material layer is negative, the first and second solid state electrochromic material layers are simultaneously bleached.
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Abstract
A solid state complementary electrochromic display device in which a first electrochromic material layer which permits an oxidation-reduction reaction and is colored in a reduction state, an ion permeable insulating layer, a second electrochromic material layer which permits an oxidation-reduction reaction and is colored in an oxidation state are prepared between two electrodes and the first electrochromic material layer and the second electrochromic material layer are colored or bleached simultaneously. The ion permeable insulating layer comprises a halogenide. As a result, high coloration concentration can be obtained at a low potential.
57 Citations
12 Claims
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1. A solid state complimentary electrochromic display device comprising:
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a substrate made of an optically transparent material; a first electrode which is contact with said substrate and made of an optically transparent material; a fist solid state electrochromic material which is in contact with said first electrode, permits an oxidation-reduction reaction, and is one of a reduction coloration type electrochromic material and an oxidation coloration type electrochromic material; a solid state ion permeable insulating layer which is in contact with said first electrochromic material layer and is made of halogenide; a second solid state electrochromic material layer which is in contact with said ion permeable insulating layer, permits the oxidation-reduction reaction, and is the other of a reduction coloration type electrochromic material and an oxidation coloration type electrochromic material; and a second electrode which is in contact with said second electrochromic material layer; whereby on applying a voltage in which the electrode in contact with the reduction coloration type electrochromic material layer is negative and the electrode in contact with the oxidation coloration type electrochromic material layer is positive, the first and second solid state electrochromic material layers are simultaneously colored, and on applying a voltage in which the electrode in contact with the reduction coloration type electrochromic material layer is positive and the electrode in contact with the oxidation coloration type electrochromic material layer is negative, the first and second solid state electrochromic material layers are simultaneously bleached. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification