Patent ID: 7896049
Filing Date: 2011-03-01
Classification: B24B,C09J,H01L,Y10T

Abstract:
1. An apparatus for joining a semiconductor wafer to a ring frame through a supporting adhesive tape such that the ring frame holds the semiconductor wafer, the apparatus comprising: a wafer support bench supporting a flat back face of a semiconductor wafer on which an annular convex portion is formed along an outer periphery so as to surround a back-ground area and a flat concave portion is formed at an inner-diameter side of the annular convex portion; a ring frame support bench holding a ring frame having an adhesive tape joined thereto; and a joining mechanism joining the adhesive tape to the flat concave portion of the semiconductor wafer while pressing the adhesive tape against the flat concave portion of the semiconductor wafer wherein the joining mechanism includes: a rotation frame rotating about a vertical axis center concentric with a center of the wafer support bench; a guide shaft horizontally provided on a lower side of the rotation frame; and a pair of joining members each guided and supported by the guide shaft so as to move horizontally, and wherein the joining member moves spirally while revolving in synchronization with the rotation of the rotation frame.