Patent ID: 6454153
Filing Date: 2002-09-24
Classification: B23K,H01L

Abstract:
An apparatus for forming wire bonds from circuitry on a substrate to a semiconductor chip joined to the substrate; wherein the substrate has a pair of first and second opposing surfaces; wherein the circuitry is proximate the second opposing surface of the substrate and the semiconductor chip is proximate the first opposing surface of the substrate; wherein a slit extends through the substrate from the second opposing surface to the first opposing surface; wherein the slit has a length and a width, and has a pair of ends spaced from one another by the length; and wherein a plurality of bonding wires are provided to extend at least partially across the slit, the apparatus comprising:a support for supporting the substrate and semiconductor chip, the support being adapted to engage the first surface of the substrate; and a pressing tool movably mounted relative to the substrate, the pressing tool adapted to be positioned proximate the second surface of the substrate and adapted to be simultaneously engageable with the plurality of bonding wires and moveable at least partially into the slit, the pressing tool having a deflecting surface configured to simultaneously press the wires into the slit and into contact with corresponding contact pads on the semiconductor chip when the pressing tool is moved toward the substrate, the deflecting surface being substantially planar and having a sufficient length to extend across a predominate portion of the length of the slit.