Microelectronic devices and methods for manufacturing and operating packaged microelectronic device assemblies

Abstract

Packaged microelectronic devices, methods for packaging microelectronic devices, and methods of operating microelectronic devices. In one embodiment, a packaged microelectronic device comprises a die including integrated circuitry, a first casing coating at least a portion of the die, a heat sink proximate to the die, and a second casing on at least a portion of the heat sink and coating at least a portion of the first casing. The first casing has a plurality of first interconnect elements, and the second casing engages the first interconnect elements to the first casing. The interconnect elements can be surface striations or other features that project into or away from the first casing. For example, the interconnect elements can be ridges extending across a surface of the first casing. In other embodiments, the first interconnect elements can be bumps and/or dimples across the surface of the first casing. The second casing can be molded around the first casing such that the material of the second casing conforms to or otherwise engages the first interconnect elements.