Patent ID: 8196445
Filing Date: 2012-06-12
Classification: B21F,H01L,Y10T

Abstract:
1. A method of fabricating a semiconductor device having a plurality of leads comprising: descending a lead bending punch, as an upper die, towards a lead bending die, as an lower die, so as to move said leads of said semiconductor device towards said lead bending die, to thereby bend said leads into a gull wing shape, wherein, in descending the lead bending punch, a first stopper specifies the bottom dead center of said lead bending punch so as to ensure distance not smaller than thickness of said leads, between the bottom surface of said lead bending punch and the top surface of a portion, allowing thereon placement of said leads, of said lead bending die, wherein said lead bending die includes: a first lead bending die allowing thereon placement of a main body of said semiconductor device, and having a curved surface facing towards said lead bending punch in bending said leads; and a second lead bending die is movable in the same direction with the direction of movement of said lead bending punch, and having a round portion allowing contact with an end side of said leads bent as being brought into contact with said lead bending punch in bending said leads.