Semiconductor device manufacturing: process – Bonding of plural semiconductor substrates – Thinning of semiconductor substrate
Reexamination Certificate
2011-04-19
2011-04-19
Nhu, David (Department: 2895)
Semiconductor device manufacturing: process
Bonding of plural semiconductor substrates
Thinning of semiconductor substrate
C438S311000, C438S474000, C438S009000, C257SE21170, C257SE21320, C257SE21227, C257SE21267
Reexamination Certificate
active
07927972
ABSTRACT:
Even if an oxygen ion implanted layer in a wafer for active layer is not a completely continuous SiO2layer but a layer mixed partially with Si or SiOx, it is removed by here is provided a method for producing a bonded wafer in which it is possible to remove an oxygen ion implanted layer effectively as it is by repetitive treatment with an oxidizing solution and HF solution at a step of removing the oxygen ion implanted layer in a bonded wafer.
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patent: H05-291543 (1993-11-01), None
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Endo Akihiko
Kusaba Tatsumi
Nhu David
Sughrue & Mion, PLLC
Sumco Corporation
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