Patent ID: 7134311
Filing Date: 2006-11-14
Classification: H01L,Y10T

Abstract:
1. A device for fabricating a lead frame by press forming, comprising: a die having a flat face, on which a lead frame to be fabricated by press forming is to be placed, and a first concavity, which is dented relative to the flat face, the die possessing a fabricating face extending from the bottom of the first concavity to the flat face through a slant, which is interposed between the bottom of the first concavity and the flat face, the fabricating face contributing to the fabrication of a lead frame by press forming; and a punch having punching faces formed so as to be opposite to the fabricating faces of the die for the fabrication of the lead frame by press forming; wherein at least one of the die and the punch are movable so as to hold the lead frame between the fabricating face of the die and the punching face of the punch for the fabrication of the lead frame by press forming; and wherein the bottom of the first concavity of the die has a second concavity, which is dented relative to the bottom, so as not to come into contact with the lead frame during the press forming thereof, and the punch has a front end opposite to the bottom of the first concavity of the die, the front end being formed so as to have a portion partially spreading over the second concavity.