Patent ID: 8513088
Filing Date: 2013-08-20
Classification: H01L

Abstract:
1. A method for manufacturing a semiconductor device, comprising: preparing a semiconductor wafer having a plurality of chip areas segmented by dicing grooves, a wafer shape of the semiconductor wafer being maintained by a surface protective film attached to a first surface of the semiconductor wafer; forming an adhesive layer by applying a liquid adhesive to a second surface in an opposite side of the first surface of the semiconductor wafer while filling the liquid adhesive into at least part of the dicing grooves; attaching a supporting sheet having a tacky layer whose tack strength can be reduced to the second surface of the semiconductor wafer via the adhesive layer; peeling the surface protective film from the first surface of the semiconductor wafer; cleaving the adhesive layer including the adhesive filled into the dicing grooves by expanding the supporting sheet attached to the semiconductor wafer; and cleaning the first surface of the semiconductor wafer with the inside of the dicing groove while maintaining a state that the supporting sheet is expanded, wherein the tack strength of portions corresponding to the dicing grooves of the tacky layer is selectively reduced before cleaning the first surface of the semiconductor wafer.