Patent ID: 7146718

Claim:
An apparatus for mounting bare semiconductor chips, comprising a substrate table with a supporting surface for a substrate, a wafer table, the wafer table aligned diagonally to the supporting surface of the substrate table at a predetermined angle, φ, part of the wafer table located underneath the substrate table and the wafer table movable in two directions for presenting a bare semiconductor chip at a first location, and a pick and place system for picking the semiconductor chip presented at the first location and placing the semiconductor chip onto the substrate, the pick and place system comprising a shuttle movable in a predetermined direction and carrying a swivel arm and a bondhead with a chip gripper, the pick and place system further comprising a position measuring and control system for measuring and controlling the position of the shuttle along the predetermined direction, wherein the bondhead is located at an end of the swivel arm and the chip gripper is deflectable with respect to the bondhead, wherein a direction of deflection of the chip gripper is different from said predetermined direction in which the shuttle is movable, the apparatus adapted to move the shuttle along said predetermined direction to a first position and to swivel the swivel arm into a first swivel position for picking the semiconductor chip presented at the first location, wherein in said first swivel position a longitudinal axis of the swivel arm embraces the angle φ with the perpendicular to the supporting surface of the substrate table, and the apparatus adapted to move the shuttle along said predetermined direction to another position and to swivel the swivel arm into a second swivel position for placing the semiconductor chip on the substrate, wherein in said second swivel position the longitudinal axis of the swivel arm runs orthogonally to the supporting surface of the substrate table.