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Conductive ball attaching apparatus and method

  • US 6,276,590 B1
  • Filed: 02/28/2000
  • Issued: 08/21/2001
  • Est. Priority Date: 04/22/1997
  • Status: Expired due to Fees
First Claim
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1. 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; and

    a 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.

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