Patent ID: 6898848
Filing Date: 2005-05-31
Classification: B29C,H01L,Y10T

Abstract:
1. A method of bonding inner leads of a chip lead complex to bonding pads on a lead-by-lead basis, wherein said chip lead complex includes: (i) a semiconductor integrated circuit chip having a plurality of bonding pads, and (ii) a plurality of inner leads disposed over a carrier tape and extending over respective bonding pads in an opening of the carrier tape over the bonding pads, said integrated circuit chip being secured to the carrier tape, said method comprising the steps of: (a) advancing a carrier tape that is wound onto a loading reel; (b) feeding the chip lead complex over the advancing carrier tape to a bonding stage, the chip lead complex having both said semiconductor integrated circuit chip and said inner leads fixed over the carrier tape; (c) deforming one of the inner leads by pushing downward a free end portion thereof to the integrated circuit chip with a bonding tool; (d) after step (c), moving the bonding tool upward, then deforming said one of the inner leads by displacing the bonding tool from the free end portion of said one of the inner leads along said one of the inner leads by keeping the bonding tool away from the integrated circuit chip; (e) after step (d), moving the bonding tool to the free end portion, then bonding said one of the inner leads to one of the bonding pads; and (f) repeating steps (c) to (e) for each remaining inner lead other than said one of the inner leads.