发明名称 |
METHOD AND APPARATUS EMPLOYING EXTERNAL LIGHT SOURCE FOR ENDPOINT DETECTION |
摘要 |
A method and apparatus for endpoint detection for the stripping of a particular material, such as photo-resist material, from a substrate surface. A beam of light is projected onto the substrate surface and the fluoresced and/or reflected light intensity at a particular wavelength band is measured by a light detector. The light intensity is converted to a numerical value and transmitted electronically to a control mechanism which determines the proper disposition of the substrate. The control mechanism controls the cessation of the stripping process and may control a substrate-handling device which sequentially transfers substrates to and from a stripping chamber.
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申请公布号 |
US2001046043(A1) |
申请公布日期 |
2001.11.29 |
申请号 |
US19990399242 |
申请日期 |
1999.09.20 |
申请人 |
JOHNSON DAVID R.;PHILLIPS JOE LEE;NIELSEN TODD C.;HATFIELD ROBERT J. |
发明人 |
JOHNSON DAVID R.;PHILLIPS JOE LEE;NIELSEN TODD C.;HATFIELD ROBERT J. |
分类号 |
G01N21/27;G01N21/55;G01N21/64;G01N21/88;G01N21/956;H01J37/32;H01L21/00;H01L21/027;H01L21/302;H01L21/3065;H01L21/66;(IPC1-7):G01B11/00;G01B11/06 |
主分类号 |
G01N21/27 |
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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