Patent ID: 8106497
Filing Date: 2012-01-31
Classification: H01L

Abstract:
1. A stacked semiconductor module comprising: a first semiconductor chip with an active side mounted to a wiring substrate and having a rear side; second semiconductor chip stacked above the first semiconductor chip and having an active side and a read side facing the rear side of the first semiconductor chip; a thermally conductive layer arranged between the rear sides of the first and second semiconductor chips, the thermally conductive layer including anisotropically thermally conductive particles having a lower thermal conductivity in directions orthogonal to the layer than in lateral directions of the layer; a first heat ring disposed about a perimeter of the first semiconductor chip and positioned between the wiring substrate and the thermally conductive layer; a second heat ring disposed about a perimeter of the second semiconductor chip and positioned on the thermally conductive layer; and a heat conductive lid including cooling fins disposed above the second semiconductor chip and which mergers into the second heat ring.