Invention Grant
- Patent Title: IC having trench-based metal-insulator-metal capacitor
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Application No.: US16564849Application Date: 2019-09-09
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Publication No.: US11075157B2Publication Date: 2021-07-27
- Inventor: Mona M. Eissa , Umamaheswari Aghoram , Pushpa Mahalingam , Erich Wesley Kinder , Bhaskar Srinivasan , Brian E. Goodlin
- Applicant: Texas Instruments Incorporated
- Applicant Address: US TX Dallas
- Assignee: Texas Instruments Incorporated
- Current Assignee: Texas Instruments Incorporated
- Current Assignee Address: US TX Dallas
- Agent Jacqueline J. Gamer; Charles A. Brill; Frank D. Cimino
- Main IPC: H01L23/522
- IPC: H01L23/522 ; H01L49/02 ; H01L21/768

Abstract:
An integrated circuit (IC) includes a semiconductor surface layer of a substrate including circuitry formed in the semiconductor surface layer configured together with a Metal-Insulator-Metal (MIM) capacitor. A multi-layer metal stack on the semiconductor surface layer includes a bottom plate contact metal layer including a bottom capacitor plate contact. A first interlevel dielectric (ILD) layer is over the bottom plate contact metal layer. The MIM capacitor includes a trench in the first ILD layer over the bottom capacitor plate contact, wherein the trench is lined by a bottom capacitor plate with a capacitor dielectric layer thereon, and a top capacitor plate on the capacitor dielectric layer. A fill material fills the trench to form a filled trench. A second ILD layer is over including the filled trench. A filled via through the second ILD layer provides a contact to a top plate contact on the top capacitor plate.
Public/Granted literature
- US20210074630A1 IC HAVING TRENCH-BASED METAL-INSULATOR-METAL CAPACITOR Public/Granted day:2021-03-11
Information query
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