摘要:
Methods for assembling thermally enhanced semiconductor device packages are disclosed in which a chip assembly has a chip affixed to a leadframe. A thermal pad is affixed to a surface of the chip, and the chip assembly is encapsulated whereby a surface of the thermal pad remains exposed to form at least a portion of a surface of the package favorable for the egress of heat from the chip. Also disclosed are thermally enhanced semiconductor device packages made using the methods of the invention.
摘要:
A low-CTE packaging material for assembling a semiconductor die into a package and a method for assembling a semiconductor die into a package, in which the packaging material comprises a negative-CTE material. The low-CTE packaging material in accordance with the embodiments of the invention may be a die attach material, a lid attach material, or an encapsulant, such as a mold compound or glob-top material. Preferably, the negative-CTE material is a tungstate compound, such as zirconium tungstate, halfnium tungstate or a solution of zirconium and halfnium tungstate.