发明名称 Apparatus and method for reducing bow and warp in silicon wafers sliced by a wire saw
摘要 A wire saw slicing apparatus capable of slicing a cylindrical workpiece into wafers having a flat shape with reduced bow and warp. The slicing apparatus includes a layer of parallel wires moving with reciprocating or continuous movement while a workpiece is advanced through the wires, while an abrasive containing slurry is supplied. The parallel wires are wound around wire guides, wherein the outer sleeve of the wire guide has a higher thermal coefficient of expansion, and the substructure of the wire guide has a lower thermal coefficient of expansion, with the substructure having flanges at the axial ends that restrict the outer sleeve from expanding axially.
申请公布号 US6352071(B1) 申请公布日期 2002.03.05
申请号 US20000597202 申请日期 2000.06.20
申请人 SEH AMERICA, INC. 发明人 KONONCHUK OLEG V.;PREECE GEORGE
分类号 B23D57/00;(IPC1-7):B28D1/08 主分类号 B23D57/00
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