US Patent:
20130153645, Jun 20, 2013
Inventors:
Princeton Lightwave, Inc. - Cranbury NJ, US
Sabbir Sajjad Rangwala - West Windsor NJ, US
Bora Muammer Onat - Robbinsville NJ, US
Domenick Salvemini - North Plainfield NJ, US
Assignee:
PRINCETON LIGHTWAVE, INC. - Cranbury NJ
International Classification:
H01L 23/00
Abstract:
A method for aligning a first substrate relative to a second substrate by enabling reflow of low-melting-temperature solder bumps is disclosed. Reflow of the solder bumps induces a force that moves one substrate relative to the other to improve alignment accuracy between bond pads located on each substrate. The method further enables reduction of surface oxide on the solder bumps that would otherwise inhibit reliable solder joint formation.