Patent ID: 6765289
Filing Date: 2004-07-20
Classification: H01L

Abstract:
A reinforcing material for a silicon wafer, said reinforcing material being attached, prior to dicing of said silicon wafer on which circuits are formed, to one side of said silicon wafer on which circuits are not formed, comprising:a base material said base material being selected from the group consisting of fiber-reinforced plastics, liquid crystalline polymers, engineering plastics, and plastics; and adhesive attached to the one side of said silicon wafer on which circuits are not formed, said adhesive being selected from the group consisting of thermoplastic resins, polyimides, polyesters, polyacrylates, polydimethyl-siloxanes, thermosetting resins, phenol resins, urea resins, melamine resins, photo-curable resins, (meth)acrylates and epoxy resins as a main polymer, wherein said reinforcing material has M-scale Rockwell hardness of 60 or above.