Patent ID: 8547622
Filing Date: 2013-10-01
Classification: B60R,G02B,G02F,Y10T

Abstract:
1. A transflective electro-optic (EO) mirror element for use in a vehicular rearview assembly, said transflective EO mirror element comprising a first glass substrate having first and second surfaces, the first surface corresponding to a front of said rearview assembly, the second surface carrying a transparent electrically-conductive layer thereon; a second glass substrate having third and fourth surfaces and disposed in a spaced-apart and parallel relationship with respect to the first substrate such as to form a gap between the second and third surfaces opposing one another, the third surface having a thin-film stack thereon that includes a layer of transparent conductive oxide (TCO) carrying a layer of high-reflectance material, wherein a value of sheet resistance of said thin-film stack is less than 6.8 ohms/square, a value of absorbance of said first substrate with the thin-film stack thereon is greater than 12%, a value of reflectance of said first substrate with the thin-film stack thereon is greater than 63%, and a value of transmittance of said first substrate with the thin-film stack thereon is greater than 2.5%; and an EO medium in said gap; wherein values of reflectance, absorbance, transmittance, and color characteristics are measured in light from a D wherein the high-reflectance material includes a material that defines higher reflectance relative to a material, of the thin-film stack, a contribution of which to a sheet resistance of the thin-film stack is the largest.