Abstract
A numerical procedure was applied to simulate the pickup process for a die bonder to study the breakage of GaAs dice. Parameters such as needle ejecting speed, vacuum pressure, and radius of needle were investigated by the Taguchi method to obtain the manufacture process working-window in order to shorten the tuning time. It was found that the ejecting speed of the needle and the downward pressing force of the pickup collet are the major factors for die breakage. This procedure could also be applied to inspecting the effects of other factors or analyzing different types of pickup machines.
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