Invention Grant
- Patent Title: Metal-insulator-metal back end of line capacitor structures
- Patent Title (中): 金属绝缘体金属后端的线路电容器结构
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Application No.: US14271515Application Date: 2014-05-07
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Publication No.: US09252203B2Publication Date: 2016-02-02
- Inventor: Hui Zang , Bingwu Liu
- Applicant: GLOBALFOUNDRIES Inc.
- Applicant Address: KY Grand Cayman
- Assignee: GLOBALFOUNDRIES INC.
- Current Assignee: GLOBALFOUNDRIES INC.
- Current Assignee Address: KY Grand Cayman
- Agency: Williams Morgan, P.C.
- Main IPC: H01L21/02
- IPC: H01L21/02 ; H01L49/02 ; H01L23/522 ; H01L23/532

Abstract:
Embodiments of the present invention provide improved metal-insulator-metal (MIM) capacitors. In embodiments, series resistance is reduced by forming a via underneath the bottom plate of a MIM capacitor, leading to a metallization layer or intermediate metal sublayer. In embodiments, the MIM capacitor is formed with a corrugated shape to increase the plate surface area, allowing a thicker dielectric to be used, thereby mitigating leakage issues.
Public/Granted literature
- US20150325635A1 METAL-INSULATOR-METAL BACK END OF LINE CAPACITOR STRUCTURES Public/Granted day:2015-11-12
Information query
IPC分类: