Invention Grant
- Patent Title: Precision BEOL resistors
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Application No.: US16419619Application Date: 2019-05-22
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Publication No.: US10943972B2Publication Date: 2021-03-09
- Inventor: Baozhen Li , Kirk Peterson , John Sheets , Lawrence A. Clevenger , Junli Wang , Chih-Chao Yang
- 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: Scully, Scott, Murphy & Presser, P.C.
- Agent L. Jeffrey Kelly, Esq.
- Main IPC: H01L49/02
- IPC: H01L49/02 ; H01L21/48 ; H01L23/522

Abstract:
A semiconductor structure that includes a resistor that is located within an interconnect dielectric material layer of an interconnect level is provided. The resistor includes a diffusion barrier material that is present at a bottom of a feature that is located in the interconnect dielectric material layer. In some embodiments, the resistor has a topmost surface that is located entirely beneath a topmost surface of the interconnect dielectric material layer. In such an embodiment, the resistor is provided by removing sidewall portions of a diffusion barrier liner that surrounds a metal-containing structure. The removal of the sidewall portions of the diffusion barrier liner reduces the parasitic noise that is contributed to the sidewall portions of a resistor that includes such a diffusion barrier liner. Improved precision can also be obtained since sidewall portions may have a high thickness variation which may adversely affect the resistor's precision.
Public/Granted literature
- US20190280080A1 PRECISION BEOL RESISTORS Public/Granted day:2019-09-12
Information query
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