Electro-optic device having a self-cleaning hydrophilic coating
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Abstract
An electro-optic device is disclosed having a self-cleaning, hydrophilic optical coating. The electro-optic device preferably forms an external rearview mirror for a vehicle. The optical coating preferably includes photocatalytic layer(s), a hydrophilic layer, and a color suppression coating. The electro-optic device is preferably an electrochromic mirror. The disclosed optical coating exhibits a reflectance at the front surface of the reflective element that is less than about 20 percent, and has sufficient hydrophilic properties such that water droplets on a front surface of the optical coating exhibit a contact angle of less than about 20°. The mirror exhibits a C* value of less than 25.
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Citations
55 Claims
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1-47. -47. (canceled)
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48. :
- An electrochromic device, comprising;
a first substantially transparent element having a front surface and a rear surface, wherein a self-cleaning, hydrophilic, optical coating is applied to at least a portion of the front surface, and further wherein an electrically conductive material is applied to at least a portion of the rear surface; a second element having a front surface and a rear surface, wherein an electrically conductive material is applied to at least a portion of the front surface; an electrochromic medium contained within a chamber positioned between the first and second elements which comprises at least one solvent, an anodic material, and a cathodic material; and wherein the electrochromic device is not strongly colored in a low reflectance state. - View Dependent Claims (49, 50, 51, 52, 53, 54, 55)
- An electrochromic device, comprising;
Specification