Patent ID: 7618844

Claim:
A method for packaging semiconductor chips comprising steps in an order of: providing a first article having a first receiving surface, the first receiving surface comprising a plurality of raised contact pads; providing a second article having a second receiving surface, the second receiving surface comprising a plurality of indented contact pads, each having a recess, the locations of the indented contact pads being matched with the locations of the raised contact pads, and the raised contact pad being able to fit loosely into the indented contact pad; placing a liquid or paste amalgam selectively into the indented contact pads to partially fill the recess of the indented contact pads; laminating and abutting the first article onto the second article so that the raised and the indented contact pads make contact through the amalgam; and curing the amalgam above room temperature for a predetermined time to form solid electrical contacts between the raised and the indented contact pads respectively, leaving a void within the recess between the articles.