Invention Grant
- Patent Title: Stacked MIM capacitors with self-aligned contact to reduce via enclosure
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Application No.: US15944053Application Date: 2018-04-03
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Publication No.: US10734475B2Publication Date: 2020-08-04
- Inventor: Takashi Ando , Robert Allen Groves , Hemanth Jagannathan , Lawrence A. Clevenger , Griselda Bonilla
- 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: Tutunjian & Bitetto, P.C.
- Agent Vazken Alexanian
- Main IPC: H01L27/08
- IPC: H01L27/08 ; H01L49/02 ; H01L21/768 ; H01L23/522

Abstract:
A method is presented for forming a stacked metal-insular-metal (MIM) capacitor with self-aligned contact. The method includes forming a first electrode plate over a first interlayer dielectric (ILD), forming a first spacer adjacent the first electrode plate, forming a first insulating layer over the first electrode plate, forming a second electrode plate over the first insulating layer, and forming a second spacer adjacent the second electrode plate and the first insulating layer. The method further includes forming a second insulating layer over the second electrode plate, forming a third electrode plate over the second insulating layer, forming a third spacer adjacent the third electrode plate and the second insulating layer, and forming a second ILD over the third electrode plate. The method also includes forming a first via through the second ILD and directly contacting the second spacer such to prevent the first via from contacting the second electrode plate.
Public/Granted literature
- US20190305076A1 STACKED MIM CAPACITORS WITH SELF-ALIGNED CONTACT TO REDUCE VIA ENCLOSURE Public/Granted day:2019-10-03
Information query
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