Patent ID: 8354739
Filing Date: 2013-01-15
Classification: H01L

Abstract:
1. A method for manufacturing a thin semiconductor package, comprising: providing a lead frame with a removable substrate, the removable substrate having an attaching surface that is attached to a first surface of the lead frame, the lead frame being formed from an electrically conductive sheet, wherein the lead frame has a plurality of leads extending inwardly from a lead frame boundary towards a central region of the lead frame; mounting a semiconductor die on the removable substrate at the central region, the semiconductor die having a connection pad surface with die pads thereon, wherein the connection pad surface is attached to the attaching surface of the removable substrate; encapsulating the lead frame and semiconductor die with a first encapsulant so that the lead frame is sandwiched between the first encapsulant and the removable substrate; removing the removable substrate from the lead frame to expose the first surface of the lead frame; electrically connecting the die pads to respective ones of the plurality of leads; encapsulating the semiconductor die and the lead frame with a second encapsulant so that the semiconductor die and the lead frame are sandwiched between the second encapsulant and first encapsulant; and removing at least part of the first encapsulant to at least partially expose the leads.