Patent ID: 7546941
Filing Date: 2009-06-16
Classification: H01L,H01R,H05K,Y10T

Abstract:
1. A ball attaching apparatus for attaching solder balls to a plurality of ball lands on a material, the apparatus comprising: an indexer having the material placed thereon, the material having the ball lands and mold caps positioned at intervals between the ball lands; a holder located above the indexer, wherein the holder is movable toward or away from the material on the indexer; an attachment plate installed on a lower surface of the holder, the attachment plate comprising: projections formed at the positions corresponding to the placement of the mold caps on the material; and grooves formed with openings at the lower surface of the attachment plate at positions corresponding to the ball lands of the material, wherein each groove is capable of accommodating therein all or a part of a solder ball, and wherein each groove is formed with one or more holes with openings at the upper surface of the attachment plate; and eject pins, each of which is arranged through the hole of a groove toward the inside of the groove of the attachment plate for conveying and dropping solder balls on the ball lands.