Patent ID: 6312976
Filing Date: 2001-11-06
Classification: H01L

Abstract:
A method for manufacturing a leadless semiconductor chip package comprising the steps of:providing a lead frame including a die pad and a plurality of leads arranged about the periphery of the die pad, each lead of the lead frame having a notch formed at the to-be-punched position thereof;attached a semiconductor die to the die pad of the lead frame, the die having a plurality of bonding pads formed thereon;wire bonding the inner ends of the leads to the bonding pads on the semiconductor die;providing a molding die including an upper part and a lower part, the upper part of the molding die having a cavity;providing a film being sucked against the lower part of the molding die;closing and clamping the molding die in a manner that the semiconductor die is positioned in the cavity and the lead frame is disposed against the film;transferring a hardenable molding compound into the cavity;hardening the molding compound;unclamping and opening the molding die to take out the molded product; andsingulating the molded product by punching along a punching line corresponding to the notches of the leads.