发明申请
- 专利标题: STRUCTURE AND METHOD FOR MANUFACTURING TRENCH CAPACITANCE
- 专利标题(中): 用于制造TRENCH电容的结构和方法
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申请号: US12191430申请日: 2008-08-14
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公开(公告)号: US20100038751A1公开(公告)日: 2010-02-18
- 发明人: HUILONG ZHU , Babar A. Khan , Xi Li , Joyce C. Liu , Thomas A. Wallner
- 申请人: HUILONG ZHU , Babar A. Khan , Xi Li , Joyce C. Liu , Thomas A. Wallner
- 申请人地址: US NY Armonk
- 专利权人: International Business Machines Corporation
- 当前专利权人: International Business Machines Corporation
- 当前专利权人地址: US NY Armonk
- 主分类号: H01L29/00
- IPC分类号: H01L29/00 ; H01L21/20
摘要:
A deep trench (DT) capacitor comprises a trench in a silicon layer, a buried plate surrounding the trench, a dielectric layer lining the trench, and a node conductor in the trench. The top surface of the poly node is higher than the surface of the silicon layer, so that it is high enough to ensure that a nitride liner used as a CMP etch stop for STI oxide surrounding a top portion of the poly node will be higher than the STI oxide, so that the nitride liner can be removed prior to forming a silicide contact on top of the poly node.
公开/授权文献
- US07858485B2 Structure and method for manufacturing trench capacitance 公开/授权日:2010-12-28
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