Method for positioning dicing line of wafer

摘要

A method for positioning a dicing line includes the steps of: bonding an adhesive tape on a semiconductor layer of a wafer; detecting an image of the wafer by an imaging device on the basis of a light transmitted through the wafer; and determining the dicing line of the wafer on the basis of a position of an image of a marker, which is disposed on the semiconductor layer of the wafer. The image of the marker is obtained by image recognition from the detected image of the wafer.