Patent ID: 6643919
Filing Date: 2003-11-11
Classification: B29C,B29L,H01L,Y10T

Abstract:
A method of fabricating a semiconductor device package, comprising the steps or(1) preparing a lead frame having a die-pad portion and a finger portion; (2) preparing an electrically-insulative support pillar leaving a flat top surface, and which is dimensioned to a predetermined width and a predetermined height; (3) preparing a molding tool set including a top inserted mold and a bottom cavity mold wherein the top inserted mold is formed with a sidewall cavity structure, while the bottom cavity mold is formed with a base cavity structure whose depth is substantially equal to the height of the support pillar; (4) dropping the support pillar into the base cavity structure of the bottom cavity mold; and then, placing the lead frame over the support pillar, with the die-pad portion and an inner end of the finger portion of the lead frame being placed directly over the top surface of the support pillar; (5) pressing the top inserted mold down against the lead frame, allowing the entire die-pad portion and the inner end of the finger portion of the lead frame to be substantially airtightly clamped between the support pillar and the top inserted mold; (6) performing a molding process to fill a molding material into the sidewall cavity structure of the top inserted mold and remaining void space of the base cavity structure of the bottom cavity mold that is unoccupied by the support pillar, so as to form an encapsulated body having a top sidewall part defining a core-hollowed portion for die attachment aid wire bonding and a bottom base part encapsulating the support pillar; (7) removing the top inserted mold and the bottom cavity mold; (8) performing a die-attachment process to attach at least one semiconductor chip onto tie die-pad portion of the lead frame within the core-hollowed portion of the encapsulated body; (9) performing a wire-bonding process to connect a set of bonding wires for electrically coupling the semiconductor chip to the inner end of the finger portion of the lead frame; and (10) performing a lidding process to hermetically seal a lid over an opening of the core-hollowed portion of the top sidewall part of the encapsulated body.