LASER ABLATION SYSTEM INCLUDING VARIABLE ENERGY BEAM TO MINIMIZE ETCH-STOP MATERIAL DAMAGE
摘要
An ablation system includes an ablation tool configured to generate an energy beam to ablate an energy-sensitive material formed on at least one embedded feature of a workpiece. The ablation tool selects an initial fluence and an initial pulse rate of the energy beam to ablate a first portion of the energy-sensitive layer. The ablation tool further reduces at least one of the initial fluence and the initial pulse rate of the energy beam to ablate a second remaining portion of the energy-sensitive layer such that the embedded feature is exposed without being damaged or deformed.
申请公布号
WO2016109272(A3)
申请公布日期
2016.08.25
申请号
WO2015US66978
申请日期
2015.12.21
申请人
SUSS MICROTECH PHOTONIC SYSTEMS, INC.;INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人
ERWIN, Brian M.;LEENSTRA, Bouwe W.;POLOMOFF, Nicholas A.;SHEETS, Courtney T.;SOUTER, Matthew E.;TESSLER, Christopher L.