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公开(公告)号：US08111479B2
公开(公告)日：2012-02-07
申请号：US11877570
申请日：2007-10-23
CPC分类号： G11B5/3116 , G11B5/1278
摘要： A magnetic write head for perpendicular magnetic data recording having a trailing shield with a two step throat height. The trailing shield is formed over a non-magnetic bump that forms a notch in the leading edge of the trailing shield. This notch defines a first, smaller throat height closest to the write pole and a larger throat height away from the write pole. The smaller throat height near the write pole prevents excess magnetic flux from leaking to the write pole, thereby ensuring efficient strong write field. The larger trailing shield throat height away from the write pole prevents magnetic saturation of the trailing shield and also greatly facilitates manufacturing avoiding problems related to variations and deviations in manufacturing processes used to define the trailing shield.
摘要翻译： 用于垂直磁数据记录的磁写头，具有具有两段喉部高度的后挡板。 后挡板形成在非磁性凸块上，该非磁性凸块在后挡板的前缘形成凹口。 该凹口限定了最靠近写入极的第一较小的喉部高度和远离写入极的较大的喉部高度。 写极附近的较小的喉部高度可防止过多的磁通量泄漏到写入极，从而确保有效的强写入场。 远离写入极的较大的后屏蔽喉部高度防止尾部屏蔽层的磁饱和，并且还极大地促进制造，避免与用于限定后屏蔽的制造工艺的变化和偏差相关的问题。
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22.发明申请公开(公告)号：US20090103211A1
公开(公告)日：2009-04-23
申请号：US11877570
申请日：2007-10-23
CPC分类号： G11B5/3116 , G11B5/1278
摘要： A magnetic write head for perpendicular magnetic data recording having a trailing shield with a two step throat height. The trailing shield is formed over a non-magnetic bump that forms a notch in the leading edge of the trailing shield. This notch defines a first, smaller throat height closest to the write pole and a larger throat height away from the write pole. The smaller throat height near the write pole prevents excess magnetic flux from leaking to the write pole, thereby ensuring efficient strong write field. The larger trailing shield throat height away from the write pole prevents magnetic saturation oft the trailing shield and also greatly facilitates manufacturing avoiding problems related to variations and deviations in manufacturing processes used to define the trailing shield.
摘要翻译： 用于垂直磁数据记录的磁写头，具有具有两段喉部高度的后挡板。 后挡板形成在非磁性凸块上，该非磁性凸块在后挡板的前缘形成凹口。 该凹口限定了最靠近写入极的第一较小的喉部高度和远离写入极的较大的喉部高度。 写极附近的较小的喉部高度可防止过多的磁通量泄漏到写入极，从而确保有效的强写入场。 远离写入极的较大的后屏蔽喉部高度防止尾部屏蔽层的磁饱和，并且还极大地有助于制造，避免与用于限定后屏蔽的制造工艺中的变化和偏差相关的问题。
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公开(公告)号：US20070266550A1
公开(公告)日：2007-11-22
申请号：US11437585
申请日：2006-05-19
CPC分类号： G11B5/3932 , B82Y10/00 , B82Y25/00 , G11B5/3163 , G11B2005/3996 , Y10T29/49043 , Y10T29/49044 , Y10T29/49046 , Y10T29/49048 , Y10T29/49052 , Y10T29/49156
摘要： A read head for a disk drive and a method of fabricating the read head with overlaid lead pads that contact the top surface of the sensor between the hardbias structures to define the electrically active region of the sensor are described. The invention deposits the GMR and lead layers before milling away the unwanted material. A photoresist mask with a hole defining the active area of the sensor is preferably patterned over a layer of DLC that is formed into a mask. A selected portion of the exposed lead material is then removed using the DLC as a mask defining the active region of the sensor. A photoresist mask pad is patterned to define the full sensor width. The excess sensor and lead material exposed around the mask is milled away. The layers for the hardbias structure are deposited.
摘要翻译： 描述了用于磁盘驱动器的读取头和制造具有覆盖的引线焊盘的读取头的方法，所述引导焊盘在硬质结构之间接触传感器的顶表面以限定传感器的电活性区域。 本发明在铣削不想要的材料之前沉积GMR和铅层。 具有限定传感器的有效区域的孔的光致抗蚀剂掩模优选地在形成为掩模的DLC层上图案化。 然后使用DLC作为限定传感器的有源区域的掩模来去除暴露的引线材料的选定部分。 图案化光致抗蚀剂掩模垫以限定完整的传感器宽度。 暴露在面罩周围的多余传感器和铅材料被磨掉。 硬质合金结构的层被沉积。
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