Invention Grant
- Patent Title: eDRAM memory cell structure and method of fabricating
- Patent Title (中): eDRAM存储单元结构及其制造方法
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Application No.: US12390739Application Date: 2009-02-23
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Publication No.: US07879672B2Publication Date: 2011-02-01
- Inventor: Kangguo Cheng , Byeong Yeol Kim , James Patrick Norum
- Applicant: Kangguo Cheng , Byeong Yeol Kim , James Patrick Norum
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agent Ian D. MacKinnon
- Main IPC: H01L21/8242
- IPC: H01L21/8242

Abstract:
A deep trench structure process for forming a deep trench in a silicon on insulator (SOI) substrate. The SOI substrate has a bulk silicon layer, a buried oxide (BOX) layer and an SOI layer. In the process, the trench fill is recessed only to a level within the SOI layer so as to avoid lateral etching of the BOX layer. The buried strap is then formed followed by the STI oxide.
Public/Granted literature
- US20100213523A1 eDRAM MEMORY CELL STRUCTURE AND METHOD OF FABRICATING Public/Granted day:2010-08-26
Information query
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