Patent ID: 6276590
Filing Date: 2001-08-21
Classification: B23K,H01L,H05K

Abstract:
A conductive ball attaching apparatus for picking up and conveying a plurality of conductive balls and attaching the conductive balls onto electrodes of a substrate, said conductive ball attaching apparatus comprising:a first positional recognition mark on said substrate;a second positional recognition mark on said substrate, wherein said first and second positional recognition marks are spaced distant from each other;a conductive ball attaching section where the substrate is to be placed;a conductive ball supply section where the conductive balls are provided;a suction head movable between the conductive ball attachment section and the conductive ball supply section along an imaginary horizontal plane;a first camera associated with the suction head and movable, along the imaginary horizontal plane, to a position above the first positional recognition mark of the substrate placed at the conductive ball attaching section; anda second camera associated with the suction head and movable, along the imaginary horizontal plane, to a position above the second positional recognition mark of the substrate placed at the conductive ball attaching section.