发明名称 |
Device for supporting a wafer |
摘要 |
A device for supporting a wafer comprises a base plate for arranging the wafer thereabove and a plurality of supports circumferentially arranged on the base plate to support the peripheral of the wafer. In order to expose portions of the wafer covered by the supports, either an annular member to engage with the supports for moving them radially outward, or a roller driven by a motor to rotate the wafer relative to the supports is provided.
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申请公布号 |
US5192087(A) |
申请公布日期 |
1993.03.09 |
申请号 |
US19910769432 |
申请日期 |
1991.10.02 |
申请人 |
NIPPON STEEL CORPORATION |
发明人 |
KAWASHIMA, HIDEAKI;EGUCHI, KOUHEI |
分类号 |
B23B31/171;H01L21/00;H01L21/687 |
主分类号 |
B23B31/171 |
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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