发明名称 |
Carrier and polishing apparatus |
摘要 |
A carrier and a polishing apparatus are designed to improve the mass producibility of wafers while using a retainer ring formed by a soft material. A rubber sheet (4) is bonded to the bottom surface of a carrier body (2) of the carrier (1) to define a pressure chamber (R), a retainer ring (13) formed by a soft material such as EG is bonded to the bottom surface of the sheet (4). A margin block (40) is provided projecting out from the bottom side of the sheet (4), and the thickness of the retainer ring (13) is set to be substantially equal to the sum of the thickness (L1) of the margin block (40) and the thickness (L2) of the wafer (W). <IMAGE> |
申请公布号 |
EP0988931(A3) |
申请公布日期 |
2002.01.30 |
申请号 |
EP19990113581 |
申请日期 |
1999.07.08 |
申请人 |
SPEEDFAM-IPEC INC. |
发明人 |
WANG, XU-JIN;IZUMI, SHIGETO;SUGIYAMA, MISUO;TANAKA, HIDEO |
分类号 |
H01L21/304;B24B37/04;B24B37/30;B24B37/32 |
主分类号 |
H01L21/304 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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