公开(公告)号：US08908333B1

公开(公告)日：2014-12-09

申请号：US14045022

申请日：2013-10-03

Applicant: Western Digital (Fremont), LLC

Inventor： Steven C. Rudy ,  Shaoping Li ,  Gerardo A. Bertero ,  Michael L. Mallary ,  Donghong Li ,  Yingbo Zhang

IPC: G11B5/33 ,  G11B5/127 ,  G11B5/115

CPC classification number: G11B5/115 ,  G11B5/29 ,  G11B5/3912 ,  G11B5/4886 ,  G11B5/4976

Abstract: A method and system provide a magnetic transducer having an air-bearing surface (ABS) and including first and second read sensors and a shield. The shield is in a down track direction from the first read sensor and between the first and second read sensors. The shield includes a first shield layer, a second shield layer and an insulating layer between the first and second shield layers. The first shield layer is between the first read sensor and the second shield layer. The second shield layer is between the first shield layer and the second read sensor. The first shield layer has a first footprint. The second shield layer has a second footprint. The second shield layer overlaps the first shield layer in the down track direction. The overlap is not more than fifty percent of the first footprint and not more than fifty percent of the second footprint.

Abstract translation: 方法和系统提供具有空气轴承表面（ABS）并且包括第一和第二读取传感器和屏蔽件的磁换能器。 屏蔽沿着第一读取传感器的向下方向并且在第一和第二读取传感器之间。 屏蔽包括第一屏蔽层，第二屏蔽层和第一屏蔽层与第二屏蔽层之间的绝缘层。 第一屏蔽层位于第一读取传感器和第二屏蔽层之间。 第二屏蔽层位于第一屏蔽层和第二读取传感器之间。 第一屏蔽层具有第一覆盖区。 第二屏蔽层具有第二覆盖区。 第二屏蔽层沿下行方向与第一屏蔽层重叠。 重叠不超过第一个足迹的百分之五十，而不超过第二个足迹的百分之五十。

公开(公告)号：US09437251B1

公开(公告)日：2016-09-06

申请号：US14579785

申请日：2014-12-22

Applicant: Western Digital (Fremont), LLC

Inventor： Steven C. Rudy ,  Luc Ving Chung ,  Christopher L. Beaudry ,  Shaoping Li ,  Jimmy J. Shen ,  Guolun Hao ,  Yingbo Zhang

IPC: G11B5/39 ,  G11B5/115 ,  G11B5/29 ,  G11B33/14 ,  G11B5/60 ,  G11B5/48 ,  G11B5/49 ,  G11B5/31

CPC classification number: G11B5/3163 ,  G11B5/115 ,  G11B5/1272 ,  G11B5/29 ,  G11B5/3912 ,  G11B5/3951 ,  G11B5/3977 ,  G11B5/4886 ,  G11B5/4976 ,  G11B5/6094 ,  G11B33/1493 ,  Y10T29/49032

Abstract: A method of making a magnetic head is provided. The method includes forming a first read sensor and a first electrical contact formed with a first shunt region. The method further includes forming a first mid-shield layer on the first read sensor, the first mid-shield layer being electrically connected to the first electrical contact. Additionally the method also includes forming a second mid-shield layer over the first mid-shield layer. Further, the method also includes forming a second read sensor over the second mid-shield layer, the second read sensor having a second electrical contact formed with a second shunt region electrically connected to the first shunt region.

Abstract translation: 提供一种制造磁头的方法。 该方法包括形成第一读取传感器和形成有第一分流区域的第一电触头。 该方法还包括在第一读取传感器上形成第一中间屏蔽层，第一中间屏蔽层电连接到第一电触点。 另外，该方法还包括在第一中间屏蔽层之上形成第二中间屏蔽层。 此外，该方法还包括在第二中间屏蔽层上形成第二读取传感器，第二读取传感器具有形成有电连接到第一分流区域的第二分流区域的第二电触点。

公开(公告)号：US09715889B1

公开(公告)日：2017-07-25

申请号：US15240311

申请日：2016-08-18

Applicant: Western Digital (Fremont), LLC

Inventor： Shaoping Li ,  Gerardo A. Bertero ,  Ming Mao ,  Shihai He ,  Steven C. Rudy ,  Haiwen Xi ,  Zhipeng Li ,  Haifeng Wang ,  Jianxin Fang ,  Zhihong Zhang ,  Yingbo Zhang ,  Qunwen Leng ,  Christopher L. Beaudry ,  Ruisheng Liu

IPC: G11B5/39 ,  G01R33/09 ,  G01R33/00

CPC classification number: G11B5/39 ,  G01R33/0052 ,  G01R33/098 ,  G11B5/3909 ,  G11B5/3912 ,  G11B5/3932 ,  G11B5/3977

Abstract: A magnetic read apparatus has a media-facing surface (MFS) and includes a read sensor, a magnetic bias structure and an insulating layer. The read sensor has a side, a front occupying part of the MFS and a back. The read sensor includes a free layer, a pinned layer and a barrier layer between the free and pinned layers. The barrier layer has a barrier layer coefficient of thermal expansion. The magnetic bias structure is adjacent to the side of the free layer. The insulating layer includes first and second portions. The first portion of the insulating layer is between the read sensor side and the magnetic bias structure. The second portion of the insulating layer adjoins the read sensor back. The insulating layer has an insulating layer coefficient of thermal expansion that is at least ⅓ of and not more than 5/3 of the barrier layer coefficient of thermal expansion.

公开(公告)号：US08970988B1

公开(公告)日：2015-03-03

申请号：US14253358

申请日：2014-04-15

Applicant: Western Digital (Fremont), LLC

Inventor： Shaoping Li ,  Gerardo A. Bertero ,  Changhe Shang ,  Ge Yi ,  Steven C. Rudy ,  Guolun Hao ,  Qunwen Leng ,  Shihai He ,  Yingbo Zhang ,  Ming Mao ,  Lien-Chang Wang

IPC: G11B5/48 ,  G11B5/265

CPC classification number: G11B5/2652 ,  G11B5/3163 ,  G11B5/3912 ,  G11B5/3977 ,  G11B5/4886

Abstract: A method and system provide a magnetic transducer having an air-bearing surface (ABS) and at least two read sensors. The magnetic transducer also includes a first read shield, a first read sensor, a middle shield, a second read sensor, a second read shield, a first electric gap and a second electric gap. The first read sensor is in a down track direction from the first read shield. The middle shield is in a down track direction from the first read sensor. The middle shield is between the first read sensor and the second read sensor. A first portion of the first electric gap is in a direction opposite to the down track direction from the first read sensor. The first read sensor and the second read sensor are between the first electric gap and the second electric gap in a cross-track direction.

Abstract translation: 一种方法和系统提供具有空气轴承表面（ABS）和至少两个读取传感器的磁换能器。 磁换能器还包括第一读取屏蔽，第一读取传感器，中间屏蔽，第二读取传感器，第二读取屏蔽，第一电气间隙和第二电气间隙。 第一读取传感器处于从第一读取屏蔽层向下的轨迹方向。 中间屏蔽是从第一个读取传感器向下的方向。 中间屏蔽位于第一读取传感器和第二个读取传感器之间。 第一电气间隙的第一部分沿着与第一读取传感器的向下轨道方向相反的方向。 第一读取传感器和第二读取传感器在交叉轨道方向上在第一电气间隙和第二电气间隙之间。