Patent ID: 7135780
Filing Date: 2006-11-14
Classification: H01L

Abstract:
1. A multichip module comprising: a substrate including one or more chip placement areas, wherein the substrate has an upper surface, wherein the one or more chip placement areas are disposed on the upper surface; first and second cavities disposed in each of the chip placement areas, wherein the second cavity is disposed above the first cavity and below the upper surface of the substrate, wherein the second cavity is larger than the first cavity; die-attach material disposed in each first cavity; and an IC chip is disposed over each chip placement are, inside the second cavity and over the die-attach material, wherein the IC chip has an upper surface and lower surface, wherein the upper surface of the IC chip is disposed across from the lower surface of the IC chip, wherein the lower surface of each IC chip is disposed over an associated chip placement area such that the upper surface of each IC chip is coplanar with the upper surface of the substrate.