Semiconductor device and manufacturing method thereof

The semiconductor device of the present invention includes a silicon substrate having a logic region and a RAM region, an NMOS transistor formed in the logic region, and an NMOS transistor formed in the RAM region. The NMOS transistor has a stack structure obtained by sequentially stacking the gate...

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Bibliographische Detailangaben
1. Verfasser: MORIYA TOMOHIKO
Format: Patent
Sprache:eng
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