Patent ID: 7449226
Filing Date: 2008-11-11
Classification: H01L,Y10T

Abstract:
1. A dicing die-bonding film comprising a radiation curable pressure-sensitive adhesive layer on a supporting base material and a die-bonding adhesive layer on the pressure-sensitive adhesive layer, wherein the die-bonding adhesive layer is arranged as a work-attaching region on a part of the pressure-sensitive adhesive layer, the work-attaching region being attached to the whole area of a face of an undiced attached work, wherein the work face is circular, having a diameter m the work-attaching region is designed so as to be held within the inner diameter of a dicing ring stuck on the pressure-sensitive adhesive layer, wherein the dicing ring is circular, having an inner diameter m wherein the region of the pressure-sensitive adhesive layer, to which the work-attaching region is attached, has been selectively irradiated such that the adhesion of the whole area of the region corresponding to the work-attaching region differs from that of the other region of the pressure-sensitive adhesive layer, and wherein the adhesion of said region of the pressure-sensitive adhesive layer corresponding to the work-attaching region is lower than the adhesion of said other region of the pressure-sensitive adhesive layer.