- Patent Title: Back-end-of-line interconnect structures with varying aspect ratios
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Application No.: US16799048Application Date: 2020-02-24
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Publication No.: US11444029B2Publication Date: 2022-09-13
- Inventor: Prasad Bhosale , Nicholas Anthony Lanzillo , Michael Rizzolo , 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: Ryan, Mason & Lewis, LLP
- Agent L. Jeffrey Kelly
- Main IPC: H01L23/532
- IPC: H01L23/532 ; H01L23/538 ; H01L21/768

Abstract:
A semiconductor structure includes an interlayer dielectric layer, a first set of back-end-of-line interconnect structures disposed in the interlayer dielectric layer, and a second set of back-end-of-line interconnect structures at least partially disposed in the interlayer dielectric layer. Each of the first set of back-end-of-line interconnect structures has a first width and a first height providing a first aspect ratio. Each of the second set of back-end-of-line interconnect structures has a second width and a second height providing a second aspect ratio different than the first aspect ratio. The second width is greater than the first width, and the second height is different than the first height.
Public/Granted literature
- US20210265277A1 BACK-END-OF-LINE INTERCONNECT STRUCTURES WITH VARYING ASPECT RATIOS Public/Granted day:2021-08-26
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