Invention Grant
- Patent Title: Polishing head and polishing apparatus
- Patent Title (中): 抛光头和抛光装置
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Application No.: US13522370Application Date: 2011-01-20
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Publication No.: US09278425B2Publication Date: 2016-03-08
- Inventor: Hiromasa Hashimoto , Kouji Morita , Takashi Aratani , Hiromi Kishida , Satoru Arakawa
- Applicant: Hiromasa Hashimoto , Kouji Morita , Takashi Aratani , Hiromi Kishida , Satoru Arakawa
- Applicant Address: JP Tokyo JP Nagano
- Assignee: SHIN-ETSU HANDOTAI CO., LTD.,FUJIKOSHI MACHINERY CORP.
- Current Assignee: SHIN-ETSU HANDOTAI CO., LTD.,FUJIKOSHI MACHINERY CORP.
- Current Assignee Address: JP Tokyo JP Nagano
- Agency: Oliff PLC
- Priority: JP2010-035255 20100219
- International Application: PCT/JP2011/000281 WO 20110120
- International Announcement: WO2011/102078 WO 20110825
- Main IPC: B24B37/30
- IPC: B24B37/30 ; B24B37/32 ; H01L21/02

Abstract:
A polishing head including, below a polishing head body, a rubber film held by a disk-shaped mid plate and an annular guide ring disposed around the rubber film holding the back surface of the workpiece on a lower face portion of the rubber film. The polishing head also includes a base member that is coupled to a polishing head body through an elastic film and holds the guide ring and the mid plate such that the lower surface of the guide ring does not contact the polishing pad during polishing. The polishing head and polishing apparatus, are operable in both of the rough polishing process and final polishing process, that can stably achieve predetermined high flatness and high polishing stock removal uniformity in polishing of a workpiece and can obtain a workpiece with fewer fine particles having a diameter of 45 nm or more.
Public/Granted literature
- US20120289129A1 POLISHING HEAD AND POLISHING APPARATUS Public/Granted day:2012-11-15
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