Semiconductor device manufacturing: process – Chemical etching – Vapor phase etching
Reexamination Certificate
2008-04-29
2008-04-29
Wilczewski, M. (Department: 2822)
Semiconductor device manufacturing: process
Chemical etching
Vapor phase etching
C438S716000
Reexamination Certificate
active
11203524
ABSTRACT:
A system that generates an intense hot gas stream is described to etch a polymer on a substrate used in the manufacture of semiconductor and MEMS devices with no surface damage. The etching process is particularly useful to remove a polymer from relatively high aspect Height-to-Width and Width-to-Height ratio holes that can include trenches, having relatively large aspect ratios for removal of polymers used in connection with the manufacturing of microstructures.
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Bollinger Lynn David
Tokmouline Iskander
Jetek, LLC
St. Onge Steward Johnston & Reens LLC
Wilczewski M.
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