Ronald R Dunham

US Patent:

20060211247, Sep 21, 2006

Filed:

Mar 18, 2005

Appl. No.:

11/083808

Inventors:

Ronald Dunham - San Jose CA, US
Wolfgang Goubau - Santa Cruz CA, US
Bhargav Patel - Newark CA, US
Marvin Wong - Danville CA, US
John Yang - Newark CA, US

International Classification:

H01L 23/02

US Classification:

438686000

Abstract:

A method for work hardening gold contact pads is disclosed. The method includes providing gold contact pads, providing lapping pads, and placing the lapping pads in contact with the gold contact pads to create a contact interface. A liquid medium is then applied to the contact interface while moving the lapping pads relative to the gold contact pads. The liquid medium is preferably a particulate-free pH neutral liquid, which makes water a good choice. Also disclosed is a gold pad having a work hardened surface.