Patent ID: 7850060

Claim:
A method of forming an electrical connection between a first electrical contact on a first chip and a second electrical contact on a second chip, the method comprising: bringing the first and second electrical contacts proximate each other, wherein the first electrical contact includes a first composition having a first melting point, and wherein the second electrical contact includes a second composition having a second melting point; inserting one of the first or second electrical contacts into the other one of the first or second electrical contacts at a temperature below the first and second melting points; and heating the first and second electrical contacts to a first temperature to form an electrical connection between them having a third composition, wherein the third composition has a third melting point that is greater than the first and second melting points, and wherein said heating the first and second electrical contacts to a first temperature is performed after said inserting one of the first or second electrical contacts into the other one of the first or second electrical contacts.