公开(公告)号：US06859347B2

公开(公告)日：2005-02-22

申请号：US09756377

申请日：2001-01-04

申请人： Richard Hsiao ,  Klaas Berend Klaassen ,  Edward Hing Pong Lee ,  Timothy J. Moran ,  Vladimir Nikitin ,  Michael Paul Salo ,  Samuel Wei-San Yuan

发明人： Richard Hsiao ,  Klaas Berend Klaassen ,  Edward Hing Pong Lee ,  Timothy J. Moran ,  Vladimir Nikitin ,  Michael Paul Salo ,  Samuel Wei-San Yuan

IPC分类号： G11B5/11 ,  G11B5/31 ,  G11B5/33 ,  G11B5/39 ,  G11B5/48

CPC分类号： G11B5/4853 ,  G11B5/11 ,  G11B5/3143 ,  G11B5/33 ,  G11B5/3903 ,  G11B5/486 ,  Y10T29/49032

摘要： A magnetic transducer including an electrically conductive shield (ECS) which is disposed between the substrate and first magnetic shield is described. The ECS is preferably embedded in an insulating undercoat layer. The ECS is preferably electrically isolated from the magnetic sensor element and is externally connected to a ground available in the disk drive through the arm electronics. Two alternative ways for connecting the ECS to a ground are described. In one embodiment which is only effective with single-ended input type arm electronics, the ECS is connected to a ground through a via to a lead pad for the read head which is connected to the ground of the arm electronics. In a second and more preferred embodiment a separate lead pad is included on the head to allow the ECS to be connected to electronic or case ground when the head is installed in the arm. The extent of the ECS should be sufficiently large to cover the read head portion of the transducer, i.e., from the edge of the first magnetic shield to the outer edges of the read contact pads, but should preferably not cover the write head pads.

摘要翻译： 描述了包括设置在基板和第一磁屏蔽之间的导电屏蔽（ECS）的磁换能器。 ECS优选地嵌入绝缘底涂层中。 ECS优选地与磁传感器元件电隔离，并且通过臂电子器件外部连接到盘驱动器中可用的地面。 描述了将ECS连接到地面的两种替代方式。 在一个实施例中，其仅对单端输入型臂电子器件有效，ECS通过通孔连接到地面，用于连接到臂电子器件的地面的用于读头的引线板。 在第二和更优选的实施例中，头部包括单独的引线板，以便当头部安装在臂中时，允许ECS连接到电子或壳体接地。 ECS的范围应该足够大以覆盖换能器的读头部分，即从第一磁屏蔽的边缘到读接触焊盘的外边缘，但是最好不覆盖写头焊盘。