Patent ID: 8941232
Filing Date: 2015-01-27
Classification: H01L

Abstract:
1. A packaged substrate with a heat sink, comprising: a packaging substrate; a heat sink; and a semiconductor substrate, wherein the semiconductor substrate has a plurality of first-side metal bumps on a first side of the substrate physically connected to the packaging substrate, and wherein the semiconductor substrate has a plurality of second-side metal bumps on a second side of the semiconductor substrate physically connected to the heat sink, and wherein the first side and the second side of the semiconductor substrate are on opposite sides of the semiconductor substrate, the semiconductor substrate has a first region configured to generate a higher amount of heat than a second region of the semiconductor substrate, and a number of second-side metal bumps of the plurality of second-side metal bumps per unit area in the first region is greater than a number of second-side metal bumps of the plurality of second-side metal bumps per unit area in the second region.