Patent ID: 7129110

Claim:
A method for manufacturing a semiconductor device, comprising: a step of forming projection electrodes on a surface at a front side of a semiconductor substrate, after said step of forming projection electrodes, a step of forming a surface resin layer on the surface of the semiconductor substrate, a step of forming a back side resin layer on a back side of the semiconductor substrate so that the surface resin layer and the back side resin layer have substantially the same thickness respectively, a surface grinding step of exposing the projection electrodes from the surface resin layer by polishing or grinding the surface resin layer, bracing the substrate with the back side resin layer until after the surface grinding step, and after said surface grinding step, a back side grinding step of thinning the semiconductor substrate by removing the back side resin layer, through polishing or grinding, from the semiconductor substrate provided with the surface resin layer and the back side resin layer, and by further polishing or grinding the back side of the semiconductor substrate from which the back side resin layer has been removed.