Patent ID: 6518509
Filing Date: 2003-02-11
Classification: H05K,Y10T

Abstract:
An electronic structure that includes a copper-Invar-copper (CIC) laminate, said CIC laminate comprising:a block of Invar; a first layer of copper; a second layer of copper, wherein the block of Invar is sandwiched between the first layer of copper and the second layer of copper; a first intermetallic layer interfaced between the block of Invar and the first layer of copper, said first intermetallic layer having a thickness not exceeding about 0.50 microns, said first intermetallic layer including constituents of the block of Invar and the first layer of copper such that said constituents of the block of Invar and the first layer of copper include copper, iron, and nickel; and a second intermetallic layer interfaced between the block of Invar and the second layer of copper, said second intermetallic layer having a thickness not exceeding about 0.50 microns, said second intermetallic layer including constituents of the block of Invar and the second layer of copper such that said constituents of the block of Invar and the second layer of copper include copper, iron, and nickel.