Patent ID: 6150716
Filing Date: 2000-11-21
Classification: H01L,Y10T

Abstract:
A package comprising an integrated circuit chip and a chip carrier suitable for connection by electrical leads to a circuit board, said package comprising:a) a metallic substrate having at least one face and composed of a metal selected from the group consisting of pure copper, copper--Invar--copper, copper plated with chromium, and Invar, said substrate having a thickness between about 0.25 millimeters and about 1 millimeters;b) a dielectric coating on at least one face of the substrate and having a thickness of between about 6 and about 20 microns;c) electrical circuitry on the dielectric coating including chip mounting pads, connector pads, and circuit traces connecting the chip mounting pads to the connector pads; andd) an integrated circuit chip mechanically connected to and spaced from the dielectric coating by flip chip bonding, or by adhesively mounting and wire bond electrical connectors, said substrate providing a floating ground plane for the electrical circuitry.