Patent ID: 9735082
Date: 2017-08-15
CPC Classifications: H01L

Claim:
1. A package comprising: a substrate comprising a conductive layer, wherein the conductive layer comprises an exposed portion of a power, ground, or signal layer; a die stack over the substrate and electrically connected to the conductive layer, wherein the die stack comprises one or more top dies bonded to a bottom die; an additional die stack over the substrate and adjacent the die stack, wherein the die stack extends higher than the additional die stack; a high thermal conductivity material over the substrate and contacting an electrically conductive material of the exposed portion of the power, ground, or signal layer; an additional high thermal conductivity material, wherein the additional high thermal conductivity material is adjacent the bottom die, and wherein a line perpendicular to a top surface of the substrate extends through the substrate, the additional high thermal conductivity material, and the one or more top dies; a contour ring over and contacting the high thermal conductivity material; and a heat dissipation feature covering the die stack and the additional die stack, wherein a first bottom surface of the heat dissipation feature over the die stack is higher than a second bottom surface of the heat dissipation feature over the additional die stack.