Patent ID: 6302313
Filing Date: 2001-10-16
Classification: H01L

Abstract:
A flip-chip bonding method in which a chip held by a suction to a tool is disposed over a substrate positioned at a bonding station, an optical probe having upper and lower detection components is inserted between said substrate and said chip so as to detect an image of said substrate and an image of said chip, said substrate and said chip are moved and positioned relative to each others said optical probe is reacted from between said substrate and said chip, and then said chip is bonded to said substrate, whereinsaid method uses a precision confirmation substrate consisting of a transparent sheet member and a precision confirmation chip consisting of a transparent sheet member and comprises the steps of:positioning said precision confirmation substrate at said bonding station,holding said precision confirmation chip by suction to a tool and disposing said cup over said precision confirmation substrate,insert said optical probe between said precision confirmation substrate and said precision confirmation chip so as to detect an image of said precision confirmation substrate and an image of said precision confirmation chip,moving and positioning said precision confirmation substrate and said precision confirmation chip relative to each other,retracting said optical probe from between said precision confirmation substrate and said precision confirmation chip,placing said precision confirmation chip on said precision confirmation substrate, anddetecting said superimposed precision confirmation substrate and precision confirmation chip by said optical probe,thereby confirming a precision of bonding positions of a flip-chip bonding apparatus, andthe precision confirmation substrate and the precision confirmation chip are both made from glass.