Invention Grant
- Patent Title: Bipolar-based SCR for electrostatic discharge protection
- Patent Title (中): 双极型SCR用于静电放电保护
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Application No.: US11065848Application Date: 2005-02-25
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Publication No.: US07309905B2Publication Date: 2007-12-18
- Inventor: Kuo-Feng Yu , Jian-Hsing Lee , Jiaw-Ren Shih , Fu Chin Yang
- Applicant: Kuo-Feng Yu , Jian-Hsing Lee , Jiaw-Ren Shih , Fu Chin Yang
- 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: Duane Morris LLP
- Main IPC: H01L29/00
- IPC: H01L29/00 ; H01L29/74 ; H01L31/111

Abstract:
A system and method is disclosed for implementing a new bipolar-based silicon controlled rectifier (SCR) circuit for an electrostatic discharge (ESD) protection. The SCR circuit comprises a bipolar device to be formed on a semiconductor substrate. The bipolar device comprises at least an N-well for providing a high resistance and a P+ material to be used as a collector thereof for further providing a high resistance. At least an Nmoat guard ring and a Pmoat guard ring surround the bipolar device, wherein when an ESD event occurs, the high resistance provided by the N-well and the P+ material of the bipolar device increases a turn-on speed.
Public/Granted literature
- US20060192251A1 Bipolar-based SCR for electrostatic discharge protection Public/Granted day:2006-08-31
Information query
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