发明授权
- 专利标题: Method and apparatus for plasma etching a wafer
- 专利标题(中): 用于等离子体蚀刻晶片的方法和装置
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申请号: US09507465申请日: 2000-02-22
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公开(公告)号: US06838390B2公开(公告)日: 2005-01-04
- 发明人: Rodney C. Langley , David R. Johnson , Willard L. Hofer
- 申请人: Rodney C. Langley , David R. Johnson , Willard L. Hofer
- 申请人地址: US ID Boise
- 专利权人: Micron Technology, Inc.
- 当前专利权人: Micron Technology, Inc.
- 当前专利权人地址: US ID Boise
- 代理机构: Dickstein Shapiro Morin & Oshinsky LLP
- 主分类号: H01L21/00
- IPC分类号: H01L21/00 ; H01L21/302
摘要:
A method utilizing a plasma etching machine which comprises a process chamber defining an interior region and including a bottom wall having an aperture and a block disposed in the aperture and including a longitudinally extending bore. A shaft extends through the bore and includes a spider push rod extending longitudinally therethrough. An internally cooled chuck is coupled to the shaft and disposed in the interior region and cooperates with the shaft to define a chamber. A spider is disposed in the chamber and is coupled to the push rod. A lift mechanism is coupled to the shaft and the push rod so that the spider pushes up on a wafer in response to actuation of the lift mechanism. A wafer clamping mechanism is coupled to the push rod if a mechanical clamp is used. In the case of electrostatic clamp the bias applied to the chuck is coupled with the use of a rotational roller to allow the bias to be applied to the chuck for the duration of the etch process. A RF source is needed for ionization of the gas. If the plasma etching machine has RF power applied through the bottom, then a rotational roller is used for this as well and must be isolated from the electrostatic voltage used to clamp the wafer.
公开/授权文献
- US20020142593A1 Method and apparatus for plasma etching a wafer 公开/授权日:2002-10-03
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