Invention Grant
- Patent Title: P-channel DEMOS device
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Application No.: US15135154Application Date: 2016-04-21
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Publication No.: US09947783B2Publication Date: 2018-04-17
- Inventor: Chin-Yu Tsai , Imran Khan , Xiaoju Wu
- Applicant: Texas Instruments Incorporated
- Applicant Address: US TX Dallas
- Assignee: TEXAS INSTRUMENTS INCORPORATED
- Current Assignee: TEXAS INSTRUMENTS INCORPORATED
- Current Assignee Address: US TX Dallas
- Agent Jacqueline J. Garner; Charles A. Brill; Frank D. Cimino
- Main IPC: H01L21/762
- IPC: H01L21/762 ; H01L29/78 ; H01L29/66 ; H01L29/06

Abstract:
A p-channel drain extended metal oxide semiconductor (DEPMOS) device includes a doped surface layer at least one nwell finger defining an nwell length and width direction within the doped surface layer. A first pwell is on one side of the nwell finger including a p+ source and a second pwell is on an opposite side of the nwell finger including a p+ drain. A gate stack defines a channel region of the nwell finger between the source and drain. A field dielectric layer is on a portion of the doped surface layer defining active area boundaries including a first active area having a first active area boundary including a first active area boundary along the width direction (WD boundary). The nwell finger includes a reduced doping finger edge region over a portion of the WD boundary.
Public/Granted literature
- US20170309744A1 P-CHANNEL DEMOS DEVICE Public/Granted day:2017-10-26
Information query
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