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No-lead IC packages having integrated heat spreader for electromagnetic interference (EMI) shielding and thermal enhancement

  • US 8,183,680 B2
  • Filed: 07/05/2006
  • Issued: 05/22/2012
  • Est. Priority Date: 05/16/2006
  • Status: Active Grant
First Claim
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1. An integrated circuit (IC) device package, comprising:

  • an IC die having bond pads;

    an encasing structure that substantially encloses the IC die, comprising;

    a leadframe, including;

    a die attach pad having a substantially planar central portion with opposing first and second surfaces, wherein the first surface of the central portion of the die attach pad has the IC die mounted on,a plurality of tie bars, each tie bar being coupled to the die attach pad, wherein a. tie bar of the plurality of tie bars comprises at least one receptacle, anda plurality of leads emanating outward from the IC die, each lead being coupled to a bond pad of the bond pads, wherein a tie bar of the plurality of tie bars is coupled to at least two leads of the plurality of leads; and

    a cap having a cavity and a planar rim surrounding the cavity, such that the cavity faces the IC die, wherein the cap is coupled to the leadframe, wherein the cap comprises at least one tab protruding from the planar rim, and wherein the at least one tab mates with the at least one receptacle; and

    a molding material that substantially encapsulates the IC die and at least partially fills the cavity.

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