Patent ID: 8847412

Claim:
A microelectronic assembly comprising: a microelectronic element having a surface and a plurality of contacts at the surface; a first element consisting essentially of at least one of semiconductor or dielectric material, the first element having a surface facing the surface of the microelectronic element and a plurality of first element contacts at the surface of the first element; electrically conductive masses each joining a contact of the plurality of contacts of the microelectronic element with a respective first element contact of the plurality of first element contacts; a thermally and electrically conductive material layer external to and facing the conductive masses between the surface of the microelectronic element and the surface of the first element and adjacent conductive masses of the conductive masses; and an electrically insulating coating provided to the conductive masses and the surfaces of the microelectronic element and the first element and facing the thermally and electrically conductive material layer to electrically insulate the conductive masses and the surfaces of the microelectronic element and the first element from the thermally and electrically conductive material layer.