Patent ID: 7413927
Filing Date: 2008-08-19
Classification: H01L

Abstract:
1. A method comprising: fabricating a plurality of integrated circuit dice on a first surface of a semiconductor wafer, the dice separated from one another on the first surface by scribe lines; forming grooves along the scribe lines on the first surface of the semiconductor wafer, the grooves being sufficiently wide to form recess regions on the first surface in the dice; and providing a re-flowable underfill material within the grooves and recess regions substantially across the first surface of the semiconductor wafer, the re-flowable underfill material substantially filling the recess regions; and singulating the dice by cutting along the scribe lines, wherein the width of the cut is less than the width of the grooves such that some of the re-flowable underfill material covers side portions of the singlated dice, and wherein sufficient underfill material remains on side portions of the singulated dice after the singulation to enhance the formation of fillets between the individual die and a substrate after the dice are singulated from the wafer and mounted onto the substrate.