Multi-chip package with interconnects extending through logic chip

摘要

A microelectronic package includes a first microelectronic element comprising logic circuitry which is flip-chip mounted to a substrate, the substrate having terminals for connection with a circuit panel or other external component. A second microelectronic element overlies a rear surface of the first microelectronic element and has contacts electrically coupled with the substrate through electrically conductive interconnects extending through a region of the first microelectronic element. A heat spreader is thermally coupled with the rear surface of the substrate, either directly or through an additional element overlying the rear surface. Additional contacts of the second microelectronic element may be coupled with contacts of the substrate through electrically conductive structure disposed beyond an edge surface of the first microelectronic element.

主权项

1. A microelectronic package, comprising:
a substrate having first and second oppositely-facing surfaces, a plurality of substrate contacts at the first surface and a plurality of terminals at the second surface; a first microelectronic element having a front surface and first contacts at its front surface, a rear surface opposite the front surface, a semiconductor region between the front and rear surfaces, and electrically conductive interconnects extending through the semiconductor region in a direction from the rear surface to the front surface, the first contacts facing and joined with the substrate contacts; a second microelectronic element having a front surface and second contacts at its front surface, the front surface and the second contacts of the second microelectronic element partially overlying the rear surface of the first microelectronic element, wherein the second contacts are electrically coupled with the substrate contacts through the interconnects, and at least a portion of the rear surface of the first microelectronic element is uncovered by the second microelectronic element.