Invention Grant
US09391085B2 Self-aligned split gate flash memory having liner-separated spacers above the memory gate
有权
自对准分离栅极闪存,其在存储器栅极上方具有衬垫分离的间隔物
- Patent Title: Self-aligned split gate flash memory having liner-separated spacers above the memory gate
- Patent Title (中): 自对准分离栅极闪存,其在存储器栅极上方具有衬垫分离的间隔物
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Application No.: US14454872Application Date: 2014-08-08
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Publication No.: US09391085B2Publication Date: 2016-07-12
- Inventor: Wei-Hang Huang , Chang-Ming Wu , Shih-Chang Liu
- Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.
- Applicant Address: TW Hsin-Chu
- Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
- Current Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
- Current Assignee Address: TW Hsin-Chu
- Agency: Eschweiler & Associates, LLC
- Main IPC: H01L29/66
- IPC: H01L29/66 ; H01L27/115 ; H01L29/792 ; H01L29/423 ; H01L29/51 ; H01L21/28 ; H01L29/45 ; H01L21/02

Abstract:
Some embodiments of the present disclosure relate to a split gate memory cell which includes a select gate and a memory gate. The select gate has a planar upper surface disposed over a semiconductor substrate and is separated from the substrate by a gate dielectric layer. The memory gate has a planar upper surface arranged at one side of the select gate and is separated from the substrate by a charge trapping layer. The charge trapping layer extends under the memory gate. A first spacer is disposed above the memory gate and is separated from the memory gate by a first dielectric liner. The first dielectric liner extends upwardly along an upper sidewall of the charge trapping layer; and source/drain regions are disposed in the semiconductor substrate at opposite sides of the select gate and the memory gate.
Public/Granted literature
- US20160043097A1 SELF-ALIGNED SPLIT GATE FLASH MEMORY Public/Granted day:2016-02-11
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