Patent ID: 7112457
Filing Date: 2006-09-26
Classification: H01L

Abstract:
1. A method of manufacturing an opto-coupler comprising: providing a printed circuit board having conductors and vias, and providing a wafer having a plurality of first optically active dies thereon, each die having an active face and a second opposing face; disposing a light transmissive insulating layer on each of the plurality of first optically active dies; singulating the plurality of disposed first optically active dies from the wafer to provide a plurality of individual dies; disposing, on the individual dies, a first light transmissive securing layer on the insulating layer; disposing, on the individual dies, a light transmissive isolation layer on the first light transmissive securing layer; disposing, on the individual dies, a second light transmissive securing layer on the light transmissive isolation layer, wherein the area of said isolation layer is greater than the area of an active face of said first optically active dies; disposing, on the individual dies, a second optically active die having an active face, such that the active face is in direct contact with the second light transmissive securing layer, to form a stack; and mechanically connecting the stack to the printed circuit board and electrically connecting the first and second dies to the conductors.