Patent ID: 7510958

Claim:
A method of manufacturing a semiconductor device including a bump forming process for forming a bump on a pad, said bump forming process comprising: a bump forming step for feeding a gold wire from a capillary while moving said capillary to form a bump on said pad; a sliding step of slightly moving said capillary in substantially horizontal direction after the formation of said bump to reduce the strength of a said base portion of said gold wire connected to said bump; and a cutting step of cutting said gold wire at said base portion after said sliding step; wherein a moving speed of said capillary in said sliding step is made smaller than that in said bump forming step; wherein said capillary is raised with said gold wire being fed from said capillary by a predetermined length and wire cutting is executed in said cutting step; and wherein, after said cutting step, a ball is formed on an end portion of said gold wire fed from said capillary; the method further including, after forming said ball, a step of bonding the ball on a ball bonding point outside the semiconductor chip and then stitch-bonding the gold wire extending from said ball onto said bump.