Patent ID: 7070670
Filing Date: 2006-07-04
Classification: C08L,C09J,H01L,H05K,Y10T

Abstract:
1. An adhesive film for bonding a semiconductor chip and a substrate for mounting a semiconductor chip or for bonding semiconductor chips themselves, wherein said adhesive film comprises an adhesive composition including: (a) an epoxy resin containing a solid epoxy resin having a softening point of 50° C. or more as measured by a ring and ball method, included in an amount of 20% by weight or more based on the total weight of the epoxy resin, (b) a curing agent and (c) a polymer compound with a weight average molecular weight of 100,000 or more, wherein a ratio of A/B exceeds 1 and is 10 or less, where A is the total weight of (a) the epoxy resin and (b) the curing agent and B is a weight of (c) the polymer compound, wherein a melt viscosity of the adhesive film at a press-bonding temperature is in a range of 5×10 to 1×10 wherein a tack load measured according to Probe tack test at 25° C. is in a range of 2 to 20 gf and wherein the polymer compound comprises a sea phase and the epoxy resin and the curing agent comprise an island phase in the adhesive composition.