Patent ID: 8941999
Filing Date: 2015-01-27
Classification: H01L

Abstract:
1. A microelectronic assembly comprising: a dielectric element having oppositely-facing first and second surfaces and first and second apertures extending between the surfaces, the dielectric element further having conductive elements thereon; a first microelectronic element having a rear surface, a front surface facing the first surface of the dielectric element, and opposed edge surfaces extending between the front and rear surfaces; the first microelectronic element having a plurality of contacts exposed at the front surface thereof; a second microelectronic element having a front surface facing the first surface of the dielectric element, an opposed rear surface, and opposed edge surfaces extending between the front and rear surfaces, the second microelectronic element overlying the first microelectronic element such that only one of the opposed edge surfaces of the first microelectronic element extend beyond one of the opposed edge surfaces of the sound microelectronic element, the second microelectronic element having a plurality of contacts at the front surface; first leads extending from contacts of the first microelectronic elements through the first aperture to at least some of the conductive elements and second leads extending from contacts of the second microelectronic element through the second aperture to other of the conductive elements; and a heat spreader thermally coupled to at least one of the first microelectronic element or the second microelectronic element.