Patent ID: 6911387

Claim:
A bump forming method of forming bumps at specific positions on a main surface of a semiconductor substrate, comprising the steps of: setting a positioning member above a heating device, where the positioning member has a plate body in which positioning holes for positioning bump materials are provided at predetermined positions which correspond to the specific positions on the main surface of the semiconductor substrate, and at least a portion of a top face of the heating device is provided as a heating surface for heating the bump materials; inserting the bump materials into the positioning holes and making the bump materials partially protrude from the holes toward a side opposite to the heating device; positioning the semiconductor substrate onto the positioning member so that the semiconductor substrate faces the protruding side of the bump materials; heating the bump materials by using the heating device and simultaneously pressing the bump materials from the protruding side of the materials via the semiconductor substrate by a pressing device; and bonding the bump materials at the specific positions on the main surface of the semiconductor substrate.