Patent ID: 7845543

Claim:
Apparatus for bonding dice onto one or more substrates placed on a base, the apparatus comprising: a first bond head and a second bond head, each incorporating a bonding tool configured for holding a die; at least one linear motion actuator for driving both the first and second bond heads towards the substrate; and a stand on which the first and second bond heads are mounted; wherein each bond head further comprises a locking mechanism operative to lock the bond head to the stand, and a compliant mechanism that is aligned along an actuation direction of the linear motion actuator to generate the bonding force on the bonding tool, and is actuable to exert a bonding force on the bonding tool to bond each die to the substrate after the bond head has been locked to the stand; and wherein the compliant mechanism comprises a plurality of flexures aligned in the actuation direction and a piezoelectric element that is configured to expand when it is electrically excited.