Patent ID: 6524891
Filing Date: 2003-02-25
Classification: H01L

Abstract:
A method for curing an adhesive die attach material in a board-on-chip (BOC) and lead-on-chip (LOC) semiconductor device package assembly having a semiconductor die adhered to a substrate by the adhesive die attach material, the method comprising:applying a bonding pressure to the semiconductor package assembly within a chamber, the bonding pressure of the chamber being greater than an exterior pressure; and simultaneous to the application of the bonding pressure to the semiconductor package assembly, applying heat having a temperature between 100Â° C. and 200Â° C. to the semiconductor package assembly for a period ranging from 30 minutes to 4 hours in order to cure the adhesive die attach material, wherein during the process of applying pressure and heat to the semiconductor package assembly, volatile diffuses through the adhesive die attach material.