Patent ID: 9163150
Filing Date: 2015-10-20
Classification: C03C,C09D,G02B

Abstract:
1. A method of making a heat treatable coated article comprising an anti-reflection coating, the method comprising: disposing a stress-reducing layer over and contacting a glass substrate, the stress-reducing layer having an index of refraction that substantially matches an index of refraction of the glass substrate; disposing a layer having a medium index of refraction over the stress-reducing layer; disposing a layer having a high index of refraction over the medium index layer; and disposing a layer having a low index of refraction over the high index layer, wherein the index of refraction of the high index layer is greater than those of the medium and low index layers, and the index of refraction of the low index layer is less than that of the medium index layer; and wherein a net residual stress of the anti-reflection coating is compressive.