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High Strength Thermocompression Bonds

IP.com Disclosure Number: IPCOM000040656D
Original Publication Date: 1987-Dec-01
Included in the Prior Art Database: 2005-Feb-02

Publishing Venue

IBM

Related People

Authors:
Bickford, HR Kang, SK Mok, LS Palmer, MJ [+details]

Abstract

A high strength thermocompression bond between metal surfaces is achieved using low compression by forming the bond between roughened metal surfaces. Metal surfaces are thermocompression bonded by simultaneously heating and pressing them together. Bonding mechanisms are plastic deformation to create an intimate contact between the surfaces and solid state diffusion in the region of the intimate contact. The pressed surfaces plastically deform until their shapes substantially conform to each other thereby increasing the area of intimate contact which results in enhanced solid state diffusion and enhanced thermal conduction across the metal joint resulting in a faster rise of the joint to the bonding temperature.