Patent ID: 7207442
Filing Date: 2007-04-24
Classification: H01L,Y10T

Abstract:
1. A die holding tray, comprising: a rigid base support member; a generally planar top surface supported by the base support member, said top surface having a set of machined lateral grooves and a set of machined longitudinal grooves; a plurality of strips sized to fill one set of the grooves and placed in each of the grooves of the one set of grooves, thereby forming a plurality of pockets for receiving dies, said pockets having a bottom and side walls comprising a segment of an unfilled machined groove and end walls comprising segments of the sides of strips, each of said plurality of pockets having the planar dimensions approximately corresponding to a length and a width of a die to be received; and vacuum channels communicating into the bottom of the pockets for enabling a vacuum to be drawn upon dies in the pockets in order to enhance the tray holding capability, wherein pockets for receiving dies are formed on both sides of at least one of the plurality of strips.