Patent ID: 6528345
Filing Date: 2003-03-04
Classification: H01L

Abstract:
A process line comprising:a first dispensing station to dispense a first underfill material onto a substrate being pre-heat at a first temperature; an oven to heat a continuously moving substrate at a second temperature lower than the first temperature while the first underfill material flows between an integrated circuit and the substrate; and a second dispensing station to dispense a second underfill material onto the substrate; the first and second underfill materials being made of different materials with the second underfill material having a lower adhesive property and greater fracture resistance than the first underfill material; the second underfill material forming a fillet that surrounds and seals an edge of the integrated circuit and the first underfill material, the fillet extending beyond the edge of the integrated circuit up a portion of a side of the integrated circuit, and the remaining portion of the side of the integrated circuit and a top surface of the integrated circuit being exposed and uncovered by the second underfill material.