Invention Grant
- Patent Title: Magnetic slurry for highly efficient CMP
-
Application No.: US16207802Application Date: 2018-12-03
-
Publication No.: US11056352B2Publication Date: 2021-07-06
- Inventor: Yen-Ting Chen , Chun-Hao Kung , Tung-Kai Chen , Hui-Chi Huang , Kei-Wei Chen
- Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.
- Applicant Address: TW Hsinchu
- Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
- Current Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
- Current Assignee Address: TW Hsinchu
- Agency: Slater Matsil, LLP
- Main IPC: H01L21/321
- IPC: H01L21/321 ; C09K3/14 ; B24B57/02 ; B24B37/04 ; B01F13/08

Abstract:
A chemical-mechanical polishing (CMP) system includes a head, a polishing pad, and a magnetic system. The slurry used in the CMP process contains magnetizable abrasives. Application and control of a magnetic field, by the magnetic system, allows precise control over how the magnetizable abrasives in the slurry may be drawn toward the wafer or toward the polishing pad.
Public/Granted literature
- US20200043747A1 Magnetic Slurry for Highly Efficient CMP Public/Granted day:2020-02-06
Information query
IPC分类: