Invention Grant
US08222111B1 Simultaneous formation of a top oxide layer in a silicon-oxide-nitride-oxide-silicon (SONOS) transistor and a gate oxide in a metal oxide semiconductor (MOS)
有权
在氧化硅 - 氧化物 - 氧化物 - 硅(SONOS)晶体管中同时形成顶部氧化物层和金属氧化物半导体(MOS)中的栅极氧化物,
- Patent Title: Simultaneous formation of a top oxide layer in a silicon-oxide-nitride-oxide-silicon (SONOS) transistor and a gate oxide in a metal oxide semiconductor (MOS)
- Patent Title (中): 在氧化硅 - 氧化物 - 氧化物 - 硅(SONOS)晶体管中同时形成顶部氧化物层和金属氧化物半导体(MOS)中的栅极氧化物,
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Application No.: US12782699Application Date: 2010-05-18
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Publication No.: US08222111B1Publication Date: 2012-07-17
- Inventor: Jeong-Mo Hwang
- Applicant: Jeong-Mo Hwang
- Applicant Address: US CA San Jose
- Assignee: Cypress Semiconductor Corporation
- Current Assignee: Cypress Semiconductor Corporation
- Current Assignee Address: US CA San Jose
- Main IPC: H01L21/8234
- IPC: H01L21/8234 ; H01L21/336 ; H01L21/31

Abstract:
A method for semiconductor fabrication. The method includes providing a silicon substrate and forming a tunnel oxide layer over the silicon substrate. Thereafter, a nitride layer is formed over the tunnel oxide layer. The nitride layer and the tunnel oxide layer are etched except where at least one nonvolatile silicon oxide nitride oxide silicon (SONOS) transistor is formed. Additionally, oxide layers are simultaneously formed over the nitride layer corresponding to where at bast one SONOS memory transistor is formed and over the exposed silicon substrate corresponding to where at least one metal oxide semiconductor (MOS) transistor is formed.
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