Patent ID: 8368105

Claim:
A method of manufacturing an integrated circuit comprising a light path to a pixilated element, the method comprising: providing a substrate comprising the pixilated element; depositing a first dielectric layer over the substrate; forming an opening in the first dielectric layer over the pixilated element; filling the opening with a first sacrificial material; forming a first metal layer over a part of the first dielectric layer adjacent to the first sacrificial material; depositing a second dielectric layer over the first dielectric layer, the first sacrificial material and the first metal layer; forming a further opening in the second dielectric layer such that the first sacrificial material and the first metal layer are at least partially exposed; filling the further opening with a second sacrificial material; forming an second metal layer over a part of the second dielectric layer and a part of the second sacrificial material such that a part of the first metal layer, a part of the second sacrificial layer and a part of the second metal layer form a stack; and removing the first sacrificial material and the second sacrificial material.