Electrochromic devices
First Claim
1. An electrochromic device comprising:
- a first substantially transparent substrate;
second substantially transparent substrate substantially parallel to the first substantially transparent substrate and spaced apart therefrom; and
an electrochromic medium disposed between the first substantially transparent substrate and the second substantially transparent substrate;
wherein;
the electrochromic device is configured to exhibit a contrast ratio of at least 20,000;
1, a darkening time less than about 30 seconds, and a clearing time of less than about 150 seconds; and
the electrochromic medium comprises;
an anodic electroactive material; and
a cathodic electroactive material comprising a N,N′
-dialkyldipyridinium compound.
1 Assignment
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Accused Products
Abstract
An electrochromic device includes a first substantially transparent substrate having an electrically conductive material associated therewith, a second substantially transparent substrate having an electrically conductive material associated therewith, an electrochromic composition contained within a chamber positioned between the first and second substrates that includes at least one anodic electroactive material, at least one cathodic electroactive material, and at least one solvent, wherein at least one of the anodic electroactive and cathodic electroactive materials is electrochromic, and wherein the electrochromic device exhibits a contrast ratio of at least 20,000:1, a darkening time less than about 30 seconds, and a clearing time of less than about 150 seconds.
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Citations
19 Claims
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1. An electrochromic device comprising:
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a first substantially transparent substrate; second substantially transparent substrate substantially parallel to the first substantially transparent substrate and spaced apart therefrom; and an electrochromic medium disposed between the first substantially transparent substrate and the second substantially transparent substrate; wherein; the electrochromic device is configured to exhibit a contrast ratio of at least 20,000;
1, a darkening time less than about 30 seconds, and a clearing time of less than about 150 seconds; andthe electrochromic medium comprises; an anodic electroactive material; and a cathodic electroactive material comprising a N,N′
-dialkyldipyridinium compound. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An aircraft window system comprising:
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a housing for containing a first substantially transparent interior substrate, a second substantially transparent exterior substrate, and a variable transmission electrochromic window positioned between the interior and exterior substrates, the variable transmission electrochromic window comprising; a third substantially transparent substrate having an electrically conductive material associated therewith; a fourth substantially transparent substrate having an electrically conductive material associated therewith, the fourth substantially transparent substrate positioned parallel to and spaced apart from the third substantially transparent substrate; and an electrochromic medium disposed between the third and fourth substantially transparent substrates and contacting the electrically conductive material associated with third substrate and the electrically conductive material associate with the fourth substrate wherein; the electrochromic medium comprises; an anodic electroactive material; a cathodic electroactive material comprising a N,N′
-dialkyldipyridinium compound; anda solvent; at least one of the anodic electroactive and cathodic electroactive materials is electrochromic; the variable transmission electrochromic window exhibits a contrast ratio of at least 20,000;
1;the variable transmission electrochromic window exhibits a darkening time less than about 30 seconds; and the variable transmission electrochromic window exhibits a clearing time of less than about 150 seconds. - View Dependent Claims (18, 19)
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Specification