Invention Grant
- Patent Title: Integrated circuit e-fuse having an e-fuse element providing a diffusion barrier for underlying e-fuse terminals
-
Application No.: US17233311Application Date: 2021-04-16
-
Publication No.: US11600566B2Publication Date: 2023-03-07
- Inventor: Yaojian Leng
- Applicant: Microchip Technology Incorporated
- Applicant Address: US AZ Chandler
- Assignee: Microchip Technology Incorporated
- Current Assignee: Microchip Technology Incorporated
- Current Assignee Address: US AZ Chandler
- Agency: Slayden Grubert Beard PLLC
- Main IPC: H01L23/525
- IPC: H01L23/525 ; H01L21/768

Abstract:
An electronic fuse (e-fuse) module may be formed in an integrated circuit device. The e-fuse module may include a pair of metal e-fuse terminals (e.g., copper terminals) and an e-fuse element formed directly on the metal e-fuse terminals to define a conductive path between the pair of metal e-fuse terminals through the e-fuse element. The metal e-fuse terminals may be formed in a metal interconnect layer, along with various interconnect elements of the integrated circuit device. The e-fuse element may be formed by depositing and patterning a diffusion barrier layer over the metal e-fuse terminals and interconnect elements formed in the metal interconnect layer. The e-fuse element may be formed from a material that provides a barrier against metal diffusion (e.g., copper diffusion) from each of the metal e-fuse terminals and interconnect elements. For example, the e-fuse element may be formed from titanium tungsten (TiW) or titanium tungsten nitride (TiW2N).
Public/Granted literature
Information query
IPC分类: