Patent ID: 9111943
Filing Date: 2015-08-18
Classification: H01L

Abstract:
1. A multi-chip module (MCM), comprising: a first chip substrate having a first surface, wherein the first chip substrate includes a set of first positive features disposed on the first surface, and wherein a given first positive feature in the set of first positive features protrudes above the first surface; and a second chip substrate having a second surface that faces the first surface, wherein the second chip substrate includes a set of second positive features disposed on the second surface, and wherein a gap between the first and the second chip substrate enables proximity communication within the MCM; wherein a given second positive feature in the set of second positive features protrudes above the second surface; and wherein the given second positive feature mates with a given subset of the set of first positive features, which includes two or more of the first positive features, thereby mechanically coupling the first chip substrate and the second chip substrate; wherein the given second positive feature comprises a hemispherical shape and the two or more of the first positive features do not comprise a hemispherical shape, or the two or more of the first positive features comprise a hemispherical shape and the given second positive feature does not comprise a hemispherical shape; and wherein all positive features in the set of first positive features are electrically disconnected from all circuits in the first chip substrate.