Multipiece apparatus for thermal and electromagnetic interference (EMI) shielding enhancement in die-up array packages and method of making the same

A die-up array integrated circuit (IC) device package, comprising:

• a stiffener having opposing first and second surfaces;
• a frame body having opposing first and second surfaces, said frame body further having a central opening that is open at said first and second surfaces of said frame body, wherein said second surface of said frame body is coupled to said first surface of said stiffener;
• an IC die mounted to said first surface of said stiffener within said central opening;
• a planar lid having opposing first and second surfaces, wherein said second surface of said lid is coupled to said first surface of said frame body;
• and wherein said second surface of said lid overlaps said central opening through said frame body;
• and
• a substrate having a first surface coupled to said second surface of said stiffener, wherein a plurality of contact pads on said first surface are electrically connected through said substrate to an array of electrically conductive terminals on a second surface of said substrate;
• wherein said stiffener, said frame body, and said lid form an enclosure structure that substantially encloses said IC die, wherein said stiffener further comprises:
• a first portion having at least one electrically conductive plated area patterned on said first surface in one or more areas in electrical contact with said frame body;
• and
• a second portion separated from said first portion by a channel through said stiffener, wherein said second portion is electrically isolated from said first portion.