Patent ID: 7780811

Claim:
A method of fixing a chipped work, comprising: providing a dicing die-bonding film comprising a radiation-curable pressure sensitive adhesive layer formed 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, wherein 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 1 and the work-attaching region is circular having a diameter m 2 , wherein m 2 >m 1 , wherein 0.1 mm≦(m 2 −m 1 ), and wherein 1 inch≦m 1 ≦12 inches, 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 3 , wherein m 3 >m 2 , and wherein 5 mm≦(m 3 −m 2 ), 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; pressing a work onto the work-attaching region of the die-bonding adhesive layer in the dicing die-bonding, thereby attaching the whole area of a face of the work to the work-attaching region attached which is larger than the whole area of the work face; pressing a dicing ring onto said other region of the pressure-sensitive adhesive layer, thereby attaching the dicing ring to the pressure-sensitive adhesive layer while fitting the work-attaching region within the inner diameter of the dicing ring; dicing the work into chips; releasing the chipped work together with the die-bonding adhesive layer from the pressure-sensitive adhesive layer; and fixing the chipped work to a semiconductor element via the die-bonding adhesive layer.