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United States Patent 3,458,102 July 29, 1969 Semiconductor Wafer Pickup And Bonding Tool Earl A. Zanger Jr. Peter R. Szasz Filed October 15, 1964 |
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Abstract of the DisclosureA semiconductor wafer or die bonding tool adapted to be connected to a workholder of a semiconductor bonding apparatus of the type adapted to locate a semiconductor wafer opposite the bonding tool in an approximately oriented position. The apparatus is adapted to engage the bonding tool upon the wafer and in a camming action to orient and position the wafer in the tip of the tool by engagement of perimetrical edges of the upper surface of the wafer upon a recessed working face in the tip of the tool. The working surface in the tip of the tool is characterized by a plurality of individual facets co-operable with upper edge portions of the wafer to avoid contacting the wafer surface during vibration incurred in bonding the wafer to a substrate. |
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Citations [54]:3,357,090 12/1967 Tittany 3,083,291 03/1963 Soffa 1,037,851 09/1912 Beam 2,915,201 12/1959 Calehuff |