Invention Grant
US07791842B2 Shield shape for a perpendicular recording head including partly sloped lower tabs
有权
用于垂直记录头的屏蔽形状,包括部分倾斜的下部突片
- Patent Title: Shield shape for a perpendicular recording head including partly sloped lower tabs
- Patent Title (中): 用于垂直记录头的屏蔽形状,包括部分倾斜的下部突片
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Application No.: US12584189Application Date: 2009-09-01
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Publication No.: US07791842B2Publication Date: 2010-09-07
- Inventor: Lijie Guan , Moris Dovek
- Applicant: Lijie Guan , Moris Dovek
- Applicant Address: US CA Milpitas
- Assignee: Headway Technologies, Inc.
- Current Assignee: Headway Technologies, Inc.
- Current Assignee Address: US CA Milpitas
- Agency: Saile Ackerman LLC
- Agent Stephen B. Ackerman
- Main IPC: G11B5/39
- IPC: G11B5/39

Abstract:
In a read-write head, the shields can serve as magnetic flux conductors for external fields, so that they direct a certain amount of flux into the recording medium. This problem has been overcome by the addition to the shields of a pair of tabs located at the edges closest to the ABS. These tabs serve to prevent flux concentrating at the edges so that horizontal fields at these edges are significantly reduced. Said tabs need to have aspect ratios of at least 2 and may be either triangular or rectangular in shape. Alternatively, the tabs may be omitted and, instead, outer portions of the shield's lower edge may be shaped so as to slope upwards away from the ABS.
Public/Granted literature
- US20090323229A1 Modified shield shape for perpendicular recording head to reduce sensitivity to external fields Public/Granted day:2009-12-31
Information query
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