Patent ID: 9281457
Filing Date: 2016-03-08
CPC Classification: H01L

Claim Text:
1. A method of manufacturing a semiconductor device comprising: forming a ball portion, by passing a first wire through a jig of a capillary, to ball bond the first wire at a first bonding point on an electrode provided on a semiconductor layer of a semiconductor element; forming a folded portion of the first wire by moving the capillary away from the first bonding point and then returning the capillary directly above the first bonding point and pressing the first wire on the ball portion; bonding a second wire on the ball portion of the first wire by passing the second wire through a jig of the capillary and moving the capillary to a position which is off-set from directly over the center of the ball portion at the first bonding point, wherein, the second wire is bonded to form a space between the folded portion of the first wire and the second wire.