Invention Grant
- Patent Title: Metal-insulator-metal capacitors with dielectric inner spacers
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Application No.: US15643032Application Date: 2017-07-06
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Publication No.: US10211147B2Publication Date: 2019-02-19
- Inventor: Xunyuan Zhang , Chanro Park , Lei Sun , Yi Qi , Roderick Augur
- Applicant: GLOBALFOUNDRIES Inc.
- Applicant Address: KY Grand Cayman
- Assignee: GLOBALFOUNDRIES Inc.
- Current Assignee: GLOBALFOUNDRIES Inc.
- Current Assignee Address: KY Grand Cayman
- Agency: Thompson Hine LLP
- Agent Anthony Canale
- Main IPC: H01L21/00
- IPC: H01L21/00 ; H01L23/00 ; H01L23/522 ; H01L23/528 ; H01L49/02 ; H01L21/768 ; H01L21/311 ; H01L21/3213

Abstract:
Methods for fabricating a structure that includes a metal-insulator-metal (MIM) capacitor and structures that include a MIM capacitor. A layer stack is deposited that includes a first conductor layer, a second conductor layer, and a third conductor layer. The layer stack is patterned to define a first electrode of the MIM capacitor from the first conductor layer, a second electrode of the MIM capacitor from the second conductor layer, and a third electrode of the MIM capacitor from the third conductor layer. A via opening is formed that extends vertically through the layer stack. The first electrode is recessed relative to the second electrode to define a cavity that is laterally offset from the via opening. A dielectric inner spacer is formed in the cavity. A conductive via is formed in the first via opening after the dielectric inner spacer is formed.
Public/Granted literature
- US20190013269A1 METAL-INSULATOR-METAL CAPACITORS WITH DIELECTRIC INNER SPACERS Public/Granted day:2019-01-10
Information query
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