Invention Grant
- Patent Title: Semiconductor device
- Patent Title (中): 半导体器件
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Application No.: US12644461Application Date: 2009-12-22
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Publication No.: US08368151B2Publication Date: 2013-02-05
- Inventor: Kenji Miyakoshi , Shinichiro Wada , Junji Noguchi , Koichiro Miyamoto , Masaya Iida , Masafumi Suefuji
- Applicant: Kenji Miyakoshi , Shinichiro Wada , Junji Noguchi , Koichiro Miyamoto , Masaya Iida , Masafumi Suefuji
- Applicant Address: JP Tokyo
- Assignee: Hitachi, Ltd.
- Current Assignee: Hitachi, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Mattingly & Malur, PC
- Priority: JP2008-331862 20081226
- Main IPC: H01L21/8234
- IPC: H01L21/8234 ; H01L27/088

Abstract:
When MOS transistors having a plurality of threshold voltages in which a source and a drain form a symmetrical structure are mounted on the same substrate, electrically-symmetrical characteristics is provided with respect to an exchange of the source and the drain in each MOS transistor. A MOS transistor having a large threshold voltage is provided with a halo diffusion region, and halo implantation is not performed on a MOS transistor having a small threshold voltage.
Public/Granted literature
- US20100164015A1 SEMICONDUCTOR DEVICE Public/Granted day:2010-07-01
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