Invention Grant
- Patent Title: Structure and method to improve FAV RIE process margin and Electromigration
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Application No.: US15852151Application Date: 2017-12-22
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Publication No.: US10985056B2Publication Date: 2021-04-20
- Inventor: Benjamin David Briggs , Joe Lee , Theodorus Eduardus Standaert
- Applicant: TESSERA, INC.
- Applicant Address: US CA San Jose
- Assignee: TESSERA, INC.
- Current Assignee: TESSERA, INC.
- Current Assignee Address: US CA San Jose
- Main IPC: H01L21/76
- IPC: H01L21/76 ; H01L21/768 ; H01L23/522 ; H01L23/528 ; H01L23/532

Abstract:
A method of forming fully aligned vias in a semiconductor device, the method including recessing a first level interconnect line below a first interlevel dielectric (ILD), laterally etching the exposed upper portion of the first interlevel dielectric bounding the recess, depositing a dielectric cap layer and a second level interlevel dielectric on top of the first interlevel dielectric, and forming a via opening.
Public/Granted literature
- US20180122691A1 STRUCTURE AND METHOD TO IMPROVE FAV RIE PROCESS MARGIN AND ELECTROMIGRATION Public/Granted day:2018-05-03
Information query
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