Importance

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Abstract

Microelectronic assemblies and methods of making the same are disclosed. In some embodiments, a microelectronic assembly includes a microelectronic element having edge surfaces bounding a front surface and contacts at the front surface; rigid metal posts disposed between at least one edge surface and a corresponding edge of the assembly, each metal post having a sidewall separating first and second end surfaces, the sidewalls have a root mean square (rms) surface roughness of less than about 1 micron; a encapsulation contacting at least the edge surfaces and the sidewalls; an insulation layer overlying the encapsulation; connection elements extending through the insulation layer, wherein at least some connection elements have cross sections smaller than those of the metal posts; a redistribution structure deposited on the insulation layer and electrically connecting first terminals with corresponding metal posts through the first connection elements, some metal posts electrically coupled with contacts of microelectronic element.

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First Claim