Tristate electrochromic device
First Claim
1. An electrochromic medium, comprising:
- at least one solvent;
at least one anodic material;
at least one cathodic material;
wherein, in a first state, the electrochromic medium exhibits a transmission in the visible radiation spectral region and the near-infrared radiation spectral region;
wherein, in a second state, the electrochromic medium exhibits a lower transmission than the transmission in the first state in one of the visible radiation spectral region or the near-infrared radiation spectral region without material attenuation in the other spectral region, andwherein, in a third state, the electrochromic medium exhibits a lower transmission than the transmission in the first state in the other spectral region where the material attenuation did not occur in the second state.
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Abstract
An electrochromic medium for use in a tristate electrochromic device, comprising: (a) at least one solvent; (b) at least one anodic material; (c) at least one cathodic material, wherein both of the anodic and cathodic materials are electroactive and at least one of the anodic and cathodic materials is electrochromic; (d) wherein, in a first state, the electrochromic medium exhibits a maximum light transmission; (e) wherein, in a second state, variable attenuation occurs to a significant extent in one of visible radiation or near-infrared radiation without significant attenuation in the other; and (f) wherein, in a third state, variable attenuation occurs to a significant extent in the other spectral region.
37 Citations
18 Claims
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1. An electrochromic medium, comprising:
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at least one solvent; at least one anodic material; at least one cathodic material; wherein, in a first state, the electrochromic medium exhibits a transmission in the visible radiation spectral region and the near-infrared radiation spectral region; wherein, in a second state, the electrochromic medium exhibits a lower transmission than the transmission in the first state in one of the visible radiation spectral region or the near-infrared radiation spectral region without material attenuation in the other spectral region, and wherein, in a third state, the electrochromic medium exhibits a lower transmission than the transmission in the first state in the other spectral region where the material attenuation did not occur in the second state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An electrochromic device, comprising:
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at least one substantially transparent substrate having an electrically conductive material associated therewith; an electrochromic medium which comprises; at least one solvent; at least one anodic material; at least one cathodic material; wherein, in a first state, the electrochromic medium exhibits a transmission in the visible radiation spectral region and the near-infrared radiation spectral region; wherein, in a second state, the electrochromic medium exhibits a lower transmission than the transmission in the first state in one of the visible radiation spectral region or the near-infrared radiation spectral region without material attenuation in the other spectral region, and wherein, in a third state, the electrochromic medium exhibits a lower transmission than the transmission in the first state in the other spectral region where the material attenuation did not occur in the second state.
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Specification