Patent ID: 8541860
Filing Date: 2013-09-24
Classification: G02B

Abstract:
1. A method for forming an antireflective coating on a semiconductor device, the method comprising: forming a first high refractive index layer on a reflective surface; forming a first low refractive index layer on the first high refractive index layer; forming a second high refractive index layer on the first low refractive index layer; and forming a second low refractive index layer on the second high refractive index layer; wherein the forming of at least one of the low refractive index layers comprises forming a first combination layer from a first low refractive index material; and forming a second combination layer from a second low refractive index material; wherein the first combination layer has a first thickness and the second combination layer has a second thickness; and wherein the first thickness and the second thickness are dependent upon a desired color point or desired reflectivity.