发明授权
US06888344B2 Test probe for semiconductor devices, method of manufacturing of the same, and member for removing foreign matter
有权
用于半导体器件的测试探针,其制造方法和用于除去异物的部件
- 专利标题: Test probe for semiconductor devices, method of manufacturing of the same, and member for removing foreign matter
- 专利标题(中): 用于半导体器件的测试探针,其制造方法和用于除去异物的部件
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申请号: US10285625申请日: 2002-11-01
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公开(公告)号: US06888344B2公开(公告)日: 2005-05-03
- 发明人: Shigeki Maekawa , Megumi Takemoto , Kazunobu Miki , Mutsumi Kano , Takahiro Nagata , Yoshihiro Kashiba
- 申请人: Shigeki Maekawa , Megumi Takemoto , Kazunobu Miki , Mutsumi Kano , Takahiro Nagata , Yoshihiro Kashiba
- 申请人地址: JP Tokyo
- 专利权人: Mitsubishi Denki Kabushiki Kaisha
- 当前专利权人: Mitsubishi Denki Kabushiki Kaisha
- 当前专利权人地址: JP Tokyo
- 代理机构: Burns, Doane, Swecker & Mathis, LLP
- 优先权: JP9-198534 19970724; JP9-248493 19970912; JP10-38429 19980220; JP10-38430 19980220
- 主分类号: G01R1/067
- IPC分类号: G01R1/067 ; G01R3/00 ; G01R1/04
摘要:
A test probe for semiconductor devices, the test probe having a tip portion which is pressed against a test pad of a semiconductor device to establish electrical contact between the tip portion and the pad for testing the operation of the semiconductor device, wherein the probe is formed to have a tip shape with an angle of not less than 15 degrees formed at the surface of the pad between a tangential line with respect to a tip face of the probe and the pad surface when the probe is pressed against the pad, the tip shape of the probe having a spherical surface meeting the relationship of: θ=cos−1(1−t/R)≧15° where the radius of curvature of the spherical surface is R, the thickness of the pad is t, and the angle formed at the pad surface between the tangential line with respect to the probe tip face and the pad surface when the probe is pressed against the pad is θ, the probe have a flat portion at an end of the tip portion. Accordingly, a contact surface can be established between the probe trip and the pad with a sufficient degree of electrical continuity, and when the the probe level is adjusted in the probing, a time required for positioning the probe prior to the start of measurement is cut down and variation in measurement are reduced.
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