Invention Grant
- Patent Title: Metal-insulator-metal (MIM) capacitor with an electrode scheme for improved manufacturability and reliability
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Application No.: US15154027Application Date: 2016-05-13
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Publication No.: US09966427B2Publication Date: 2018-05-08
- Inventor: Shyh-Wei Cheng , Hung-Lin Chen , Jui-Chun Weng , Shiuan-Jeng Lin , Tian Sheng Lin , Yu-Jui Wu , Albion Pan , Bob Sun
- Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.
- Applicant Address: TW Hsin-Chu
- Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
- Current Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
- Current Assignee Address: TW Hsin-Chu
- Agency: Eschweiler & Potashnik, LLC
- Main IPC: H01L49/02
- IPC: H01L49/02 ; H01L23/522 ; H01L21/3213 ; H01L21/311

Abstract:
A method for manufacturing a metal-insulator-metal (MIM) capacitor with a top electrode that is free of sidewall damage is provided. A bottom electrode layer is formed with a first material. An inter-electrode dielectric layer is formed over the bottom electrode layer. A top electrode layer is formed over the inter-electrode dielectric layer and without the first material. A first etch is performed into the top electrode layer and the inter-electrode dielectric layer to form a top electrode. A second etch into the bottom electrode layer to form a bottom electrode. The present application is also directed towards a MIM capacitor resulting from performing the method.
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