| CPC H01L 28/90 (2013.01) [H01L 23/481 (2013.01); H01L 23/49816 (2013.01); H01L 24/08 (2013.01); H01L 24/32 (2013.01); H01L 24/33 (2013.01); H01L 25/0657 (2013.01); H01L 2224/08146 (2013.01); H01L 2224/09181 (2013.01); H01L 2224/32145 (2013.01); H01L 2224/33181 (2013.01); H01L 2225/06541 (2013.01)] | 20 Claims |

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1. A three-dimensional device structure comprising a first die, wherein the first die comprises:
a first semiconductor substrate having a front side and an opposing back side;
a first interconnect structure disposed on the front side of the first semiconductor substrate;
a first through silicon via (TSV) structure that extends through the first semiconductor substrate and electrically contacts a metal feature of the first interconnect structure; and
an integrated passive device (IPD) embedded in the back side of the first semiconductor substrate and electrically connected to the first TSV structure.
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