Patent ID: 8038050

Claim:
A solder ball printing apparatus configured to print solder balls on a substrate and an electrode on the substrate through a mask, the apparatus comprising: a solder ball reservoir unit configured to reserve the solder balls; a solder ball shaking and discharging unit located under the solder ball reservoir unit, that is configured to receive a predetermined amount of solder balls from the solder ball reservoir unit, and feed the received solder balls onto a surface of the mask located on the substrate, wherein the solder ball shaking and discharging unit includes: a solder ball reception unit in a rectangular funnel shape configured to receive the solder balls from the solder ball reservoir unit, a convex-shaped wire member configured to feed and disperse the received solder balls onto the surface of the mask located on the substrate, the wire member having a plurality of wire sub-members arranged at predetermined intervals, and a plurality of solder ball rotating and collecting mechanisms, each being located either in a front direction or rear directions of the wire member, each including at least one driving brush and a rotational shaft, and each being configured such that solder balls which are not pressed into an opening area of the mask are swept and collected towards the wire member by driving the at least one brush within the rotational shaft; wherein the solder ball shaking and discharging unit is formed in such a manner that the width thereof is substantially the same as or shorter than the width of the mask, in a direction orthogonal to the traveling directions of the solder ball shaking and discharging unit; an oscillation unit configured to apply a predetermined oscillation to the solder ball shaking and discharging unit; and a moving mechanical unit configured to move the solder ball shaking and discharging unit along the substrate; wherein when solder balls are fed to the solder ball reception unit, the moving mechanical unit moves the soldier ball reservoir unit in a longitudinal direction, in order to uniformly feed solder balls in a longitudinal direction of the solder ball reception unit.