Invention Grant
- Patent Title: Method of using a polishing system
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Application No.: US16515455Application Date: 2019-07-18
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Publication No.: US11358252B2Publication Date: 2022-06-14
- Inventor: Shih-Chi Lin , Kun-Tai Wu , You-Hua Chou , Chih-Tsung Lee , Min Hao Hong , Chih-Jen Wu , Chen-Ming Huang , Soon-Kang Huang , Chin-Hsiang Chang , Chih-Yuan Yang
- 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: Hauptman Ham, LLP
- Main IPC: B24B37/20
- IPC: B24B37/20 ; B24B37/30 ; H01L21/02 ; H01L21/673 ; H01L21/677 ; H01L21/66

Abstract:
A method of using a polishing system includes securing a wafer to a support, wherein the wafer has a first diameter. The method further includes polishing the wafer using a first polishing pad rotating about a first axis, wherein the first polishing pad has a second diameter greater than the first diameter. The method further includes rotating the support about a second axis perpendicular to the first axis after polishing the wafer using the first polishing pad. The method further includes polishing the wafer using a second polishing pad after rotating the support, wherein the second polishing pad has a third diameter less than the first diameter. The method further includes releasing the wafer from the support following polishing the wafer using the second polishing pad.
Public/Granted literature
- US20190337116A1 METHOD OF USING A POLISHING SYSTEM Public/Granted day:2019-11-07
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