发明授权
- 专利标题: Method of protecting read sensors from electrostatic discharge damage during the manufacture of magnetic heads
- 专利标题(中): 在磁头制造期间保护读取传感器免受静电放电损坏的方法
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申请号: US10109511申请日: 2002-03-28
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公开(公告)号: US06795278B2公开(公告)日: 2004-09-21
- 发明人: James Devereaux Jarrett , Richard Hsiao , Ciaran Avram Fox , Edward Hin Pong Lee , Thomas Robert Albrecht
- 申请人: James Devereaux Jarrett , Richard Hsiao , Ciaran Avram Fox , Edward Hin Pong Lee , Thomas Robert Albrecht
- 主分类号: G11B5127
- IPC分类号: G11B5127
摘要:
Methods and apparatus for protecting read sensors from damage caused by electrostatic discharge (ESD) during manufacturing are described. Two electrical connections are formed and utilized for ESD protection: one primarily for early protection of the sensors (i.e. prior to cutting and lapping the wafer to form the ABS) and the other primarily for later protection of the sensors (i.e. after cutting and lapping the wafer to form the ABS). The first electrical connection is created between the read sensor and the first and second shields, and is severed when the wafer is cut and lapped along the ABS. The second electrical connection is formed between the sensor leads and the first and second shields, and is exposed on an outside surface of the magnetic head. The second electrical connection is severed late in the manufacturing process, preferably by laser-deletion.
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