Invention Grant
- Patent Title: Densely stacked metal-insulator-metal capacitor and method of forming the same
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Application No.: US15470554Application Date: 2017-03-27
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Publication No.: US10103218B1Publication Date: 2018-10-16
- Inventor: Effendi Leobandung
- Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Applicant Address: US NY Armonk
- Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Current Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Current Assignee Address: US NY Armonk
- Agency: F. Chau & Associates, LLC
- Main IPC: H01L49/02
- IPC: H01L49/02 ; H01L27/08 ; H01L23/522 ; H01L23/532 ; H01L21/768 ; H01L21/3213 ; H01L21/311

Abstract:
A metal-insulator-metal capacitor (MIM cap) includes a dielectric layer disposed over a substrate three contacts. A stacked structure of first and second metal layers separated by high-k dielectrics is disposed over the substrate and contacts. Three vias are formed through the structure to expose each of the three contacts. Selective etching is used to create gaps between the various metal layers at the location of the vias and these gaps are filled with an insulator. The vias are then filled with metal and the MIM cap is constructed such that the metal of the first via is electrically connected to the second metal layers and the metal of the second via is electrically connected to the first metal layers.
Public/Granted literature
- US20180277620A1 DENSELY STACKED METAL-INSULATOR-METAL CAPACITOR AND METHOD OF FORMING THE SAME Public/Granted day:2018-09-27
Information query
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