Invention Grant
- Patent Title: Current perpendicular to plane magnetoresistance read head design using a current confinement structure proximal to an air bearing surface
- Patent Title (中): 电流垂直于平面磁阻读头设计,使用靠近空气轴承表面的电流限制结构
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Application No.: US12182701Application Date: 2008-07-30
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Publication No.: US08098463B2Publication Date: 2012-01-17
- Inventor: Hardayal S. Gill , Werner J. Douglas , Wipul P. Jayasekara , Wen-Chien Hsiao
- Applicant: Hardayal S. Gill , Werner J. Douglas , Wipul P. Jayasekara , Wen-Chien Hsiao
- Applicant Address: NL Amsterdam
- Assignee: Hitachi Global Storage Technologies Netherlands, B.V.
- Current Assignee: Hitachi Global Storage Technologies Netherlands, B.V.
- Current Assignee Address: NL Amsterdam
- Agency: Duft Bornsen & Fishman, LLP
- Main IPC: G11B5/31
- IPC: G11B5/31

Abstract:
A current to perpendicular to plane (CPP) magnetoresistance (MR) read head using current confinement proximal to an air bearing surface (ABS) is disclosed. A CPP MR read head includes a first shield, an MR sensor formed on the first shield, and a second shield contacting the MR sensor proximal to an ABS. The CPP MR read head further includes insulating material between the MR sensor and the second shield, where the insulating material is distal to the ABS to electrically isolate the MR sensor from the second shield distal to the ABS. Sense current injected from the second shield through the MR sensor and into the first shield is confined proximal to the ABS at a location where the second shield contacts the MR sensor.
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