Invention Grant
- Patent Title: Deep trench capacitor with conformally-deposited conductive layers having compressive stress
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Application No.: US13029317Application Date: 2011-02-17
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Publication No.: US08487405B2Publication Date: 2013-07-16
- Inventor: Lei Tian , Scott Wilson Barry , Xuejun Ying
- Applicant: Lei Tian , Scott Wilson Barry , Xuejun Ying
- Applicant Address: US CA San Jose
- Assignee: Maxim Integrated Products, Inc.
- Current Assignee: Maxim Integrated Products, Inc.
- Current Assignee Address: US CA San Jose
- Agency: Advent, LLP
- Main IPC: H01L21/02
- IPC: H01L21/02

Abstract:
A high density deep trench MIM capacitor structure is provided wherein conductive-compressive-conformally applied layers of a semiconductor material, such as a Poly-SixGe1-x, are interleaved within MIM capacitor layers to counterbalance the tensile stresses created by such MIM capacitor layers. The interleaving of conductive-compressive-conformally applied material layers are adapted to counterbalance convex (upward) bowing of silicon wafers during the manufacturing process of high density deep trench MIM capacitor silicon devices to thereby help maximize production yields of such devices per wafer.
Public/Granted literature
- US20120211865A1 DEEP TRENCH CAPACITOR WITH CONFORMALLY-DEPOSITED CONDUCTIVE LAYERS HAVING COMPRESSIVE STRESS Public/Granted day:2012-08-23
Information query
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