Tinted solution-phase electrochromic devices
First Claim
1. In a solution-phase electrochromic device, wherein a solution, which is a medium of reversibly variable transmittance, comprises a solvent, an anodic electrochromic compound, and a cathodic electrochromic compound, the improvement which comprises having in said solution a tint-providing compound, which is selected from the group consisting of an azulene and quinoline yellow.
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Abstract
The invention provides improved solution-phase electrochromic devices, wherein the solution of reversibly variable transmittance is tinted with a tint-providing compound, and solutions of reversibly variable transmittance for use in the improved devices of the invention. An electrochromic device of the invention can be used, for example, as the component of reversibly variable transmittance in a variable-reflectance motor vehicle mirror. Among such mirrors provided by the invention are blue-tinted mirrors.
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Citations
30 Claims
- 1. In a solution-phase electrochromic device, wherein a solution, which is a medium of reversibly variable transmittance, comprises a solvent, an anodic electrochromic compound, and a cathodic electrochromic compound, the improvement which comprises having in said solution a tint-providing compound, which is selected from the group consisting of an azulene and quinoline yellow.
- 21. A solution, which is a medium of reversibly variable transmittance in a solution-phase electrochromic device and comprises a solvent, an anodic electrochromic compound, a cathodic electrochromic compound, and a tint-providing compound, which is selected from the group consisting of an azulene and quinoline yellow.
- 26. A tinted, variable reflectance rearview motor vehicle mirror wherein variable reflectance is provided by a reversibly variable transmittance, single-compartment, solution-phase, self-erasing electrochromic device, wherein the medium of reversibly variable transmittance is a solution which comprises a solvent, an anodic electrochromic compound, a cathodic electrochromic compound and a tint-providing compound, which is selected from the group consisting of an azulene and quinoline yellow.
Specification