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A Batch Wafer Scale LIGA Assembly and Packaging Technique vai Diffusion Bonding

Conference ·
OSTI ID:3305

A technique using diffusion bonding (or solid-state welding) has been used to achieve batch fabrication of two- level nickel LIGA structures. Interlayer alignment accuracy of less than 1 micron is achieved using press-fit gauge pins. A mini-scale torsion tester was built to measure the diffusion bond strength of LIGA formed specimens that has shown successful bonding at temperatures of 450"C at 7 ksi pressure with bond strength greater than 100 Mpa. Extensions to this basic process to allow for additional layers and thereby more complex assemblies as well as commensurate packaging are discussed.

Research Organization:
Sandia National Laboratories, Albuquerque, NM, and Livermore, CA
Sponsoring Organization:
USDOE
DOE Contract Number:
AC04-94AL85000
OSTI ID:
3305
Report Number(s):
SAND99-0229C; ON: DE00003305
Country of Publication:
United States
Language:
English

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