Patent ID: 9478454
Filing Date: 2016-10-25
CPC Classification: C09J,H01L,Y10T

Claim Text:
1. A dicing tape-integrated film for semiconductor back surface, comprising a film for flip chip type semiconductor back surface for protecting a back surface of a semiconductor element flip chip-connected onto an adherend, and a dicing tape, the dicing tape comprising a base material and a pressure-sensitive adhesive layer provided on the base material, the film for flip chip type semiconductor back surface being formed on the pressure-sensitive adhesive layer, wherein the pressure-sensitive adhesive layer is a radiation-curable pressure-sensitive adhesive layer whose pressure-sensitive adhesive force toward the film for flip chip type semiconductor back surface is to be decreased by irradiation with a radiation ray, wherein the radiation-curable pressure-sensitive adhesive is an internal-type UV curable pressure-sensitive adhesive in which a polymer having a radically reactive carbon-carbon double bond in an acrylic polymer side chain or main chain is used as the base polymer, or an addition-type radiation-curable pressure-sensitive adhesive in which a UV curable monomer component or oligomer component is blended into an acrylic pressure-sensitive adhesive, wherein the film for flip chip type semiconductor back surface contains a coloring agent, wherein the dicing tape-integrated film for semiconductor back surface satisfies a relation: r1<r2<r3, where r1 is a diameter of a semiconductor wafer; r2 is a diameter of a part in the pressure-sensitive adhesive layer, which corresponds to the film for flip chip type semiconductor back surface or a semiconductor wafer-attaching part in the film for flip chip type semiconductor back surface, and r3 is a diameter of the film for flip chip type semiconductor back surface or the semiconductor wafer-attaching part in the film for flip chip type semiconductor back surface, and the part in the pressure-sensitive adhesive layer is to be cured.