Patent ID: 8462516

Claim:
A micro device interconnect structure for interconnecting a multiple component stack and a substrate, the interconnect structure comprising: a first base portion formed on a first mounting surface of a first component of the stack; a first pillar portion extending from the first base portion and substantially perpendicularly to the first mounting surface; and a first head portion formed on the first pillar portion and having larger lateral dimensions than the first pillar portion; a second base portion formed on a second mounting surface of a second component of the stack; a second pillar portion extending from the second base portion and substantially perpendicularly to the second mounting surface; and a second head portion formed on the second pillar portion and having larger lateral dimensions than the second pillar portion; a first and a second contact pad formed on a mounting surface of the substrate; and a connection for connecting the first and second head portions to the first and second contact pads respectively; wherein the base portions and the pillar portions are integrally formed of a homogeneous material pillar and the first pillar portion is higher than the second pillar portion.