Invention Grant
- Patent Title: E-flash cell band engineering for erasing speed enhancement
- Patent Title (中): 用于擦除速度增强的电子闪存单元工程
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Application No.: US14489902Application Date: 2014-09-18
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Publication No.: US09401434B2Publication Date: 2016-07-26
- Inventor: Chih-Ming Chen , Tsu-Hui Su , Szu-Yu Wang , Chung-Yi Yu
- 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: H01L29/788
- IPC: H01L29/788 ; H01L29/792 ; H01L29/423 ; H01L29/66 ; H01L29/40

Abstract:
The present disclosure relates to a structure and method for forming a flash memory cell with an improved erase speed and erase current. Si dots are used for charge trapping and an ONO sandwich structure is formed over the Si dots. Erase operation includes direct tunneling as well as FN tunneling which helps increase erase speed without compensating data retention.
Public/Granted literature
- US20160087106A1 E-FLASH CELL BAND ENGINEERING FOR ERASING SPEED ENHANCEMENT Public/Granted day:2016-03-24
Information query
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