Invention Grant
- Patent Title: Back side metallization
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Application No.: US16260794Application Date: 2019-01-29
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Publication No.: US10431562B1Publication Date: 2019-10-01
- Inventor: Thomas P. Dolbear , Daniel Cavasin , Sanjay Dandia
- Applicant: ADVANCED MICRO DEVICES, INC.
- Applicant Address: US CA Santa Clara
- Assignee: Advanced Micro Devices, Inc.
- Current Assignee: Advanced Micro Devices, Inc.
- Current Assignee Address: US CA Santa Clara
- Agency: Faegre Baker Daniels LLP
- Main IPC: H01L21/78
- IPC: H01L21/78 ; H01L23/00 ; H01L23/367 ; H01L25/00 ; H01L21/48 ; H01L25/065 ; C23C16/34 ; C23C16/06

Abstract:
An integrated circuit device wafer includes a silicon wafer substrate and a back side metallization structure. The back side metallization structure includes a first adhesion layer on the back side of the substrate, a first metal later over the first adhesion layer, a second metal layer over the first metal layer, and a second adhesion layer over the second metal layer. The first includes at least one of: silicon nitride and silicon dioxide. The first metal layer includes titanium. The second metal layer includes nickel. The second adhesion layer includes at least one of: silver, gold, and tin.
Information query
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