公开(公告)号：US08953285B2

公开(公告)日：2015-02-10

申请号：US12799924

申请日：2010-05-05

申请人： Yuchen Zhou ,  Kunliang Zhang ,  Zhigang Bai

发明人： Yuchen Zhou ,  Kunliang Zhang ,  Zhigang Bai

IPC分类号： G11B5/39 ,  B82Y10/00 ,  B82Y25/00 ,  G01R33/09 ,  H01F10/30 ,  H01F10/32 ,  H01F41/30 ,  B82Y40/00

CPC分类号： G11B5/398 ,  B82Y10/00 ,  B82Y25/00 ,  B82Y40/00 ,  G01R33/093 ,  G01R33/098 ,  G11B5/3906 ,  G11B5/3909 ,  G11B5/3912 ,  G11B2005/3996 ,  H01F10/30 ,  H01F10/3259 ,  H01F10/3286 ,  H01F10/3295 ,  H01F41/307 ,  H01L43/02 ,  H01L43/08

摘要： A MR sensor is disclosed that has a free layer (FL) with perpendicular magnetic anisotropy (PMA) which eliminates the need for an adjacent hard bias structure to stabilize free layer magnetization and minimizes shield-FL interactions. In a TMR embodiment, a seed layer, free layer, junction layer, reference layer, and pinning layer are sequentially formed on a bottom shield. After patterning, a conformal insulation layer is formed along the sensor sidewall. Thereafter, a top shield is formed on the insulation layer and includes side shields that are separated from the FL by a narrow read gap. The sensor is scalable to widths

摘要翻译： 公开了具有垂直磁各向异性（PMA）的自由层（FL）的MR传感器，其不需要相邻的硬偏置结构来稳定自由层磁化并使屏蔽-FL相互作用最小化。 在TMR实施例中，种子层，自由层，结层，参考层和钉扎层依次形成在底部屏蔽上。 在图案化之后，沿传感器侧壁形成保形绝缘层。 此后，在绝缘层上形成顶部屏蔽，并且包括通过狭窄的读取间隙与FL分离的侧面屏蔽。 当PMA大于FL自扫描场时，传感器可缩放到宽度<50 nm。 有效偏置场对传感器纵横比相当不敏感，这使得高条纹和窄宽度传感器成为高RA TMR配置的可行方法。 侧面屏蔽可以延伸到种子层平面以下。

公开(公告)号：US20110273802A1

公开(公告)日：2011-11-10

申请号：US12799924

申请日：2010-05-05

申请人： Yuchen Zhou ,  Kunliang Zhang ,  Zhigang Bai

发明人： Yuchen Zhou ,  Kunliang Zhang ,  Zhigang Bai

IPC分类号： G11B5/33

CPC分类号： G11B5/398 ,  B82Y10/00 ,  B82Y25/00 ,  B82Y40/00 ,  G01R33/093 ,  G01R33/098 ,  G11B5/3906 ,  G11B5/3909 ,  G11B5/3912 ,  G11B2005/3996 ,  H01F10/30 ,  H01F10/3259 ,  H01F10/3286 ,  H01F10/3295 ,  H01F41/307 ,  H01L43/02 ,  H01L43/08

摘要： A MR sensor is disclosed that has a free layer (FL) with perpendicular magnetic anisotropy (PMA) which eliminates the need for an adjacent hard bias structure to stabilize free layer magnetization and minimizes shield-FL interactions. In a TMR embodiment, a seed layer, free layer, junction layer, reference layer, and pinning layer are sequentially formed on a bottom shield. After patterning, a conformal insulation layer is formed along the sensor sidewall. Thereafter, a top shield is formed on the insulation layer and includes side shields that are separated from the FL by a narrow read gap. The sensor is scalable to widths

摘要翻译： 公开了具有垂直磁各向异性（PMA）的自由层（FL）的MR传感器，其不需要相邻的硬偏置结构来稳定自由层磁化并使屏蔽-FL相互作用最小化。 在TMR实施例中，种子层，自由层，结层，参考层和钉扎层依次形成在底部屏蔽上。 在图案化之后，沿传感器侧壁形成保形绝缘层。 此后，在绝缘层上形成顶部屏蔽，并且包括通过狭窄的读取间隙与FL分离的侧面屏蔽。 当PMA大于FL自扫描场时，传感器可缩放到宽度<50 nm。 有效偏置场对传感器纵横比相当不敏感，这使得高条纹和窄宽度传感器成为高RA TMR配置的可行方法。 侧面屏蔽可以延伸到种子层平面以下。

公开(公告)号：US08179628B2

公开(公告)日：2012-05-15

申请号：US12803874

申请日：2010-07-08

申请人： Yuchen Zhou ,  Tobias Maletzky ,  Xuhui Jin ,  Zhigang Bai ,  Kenichi Takano ,  Erhard Schreck

发明人： Yuchen Zhou ,  Tobias Maletzky ,  Xuhui Jin ,  Zhigang Bai ,  Kenichi Takano ,  Erhard Schreck

IPC分类号： G11B5/02 ,  G11B11/00

CPC分类号： G11B5/314 ,  B82Y20/00 ,  G02B6/1226 ,  G11B5/3163 ,  G11B5/6088 ,  G11B2005/0021

摘要： A TAMR (Thermal Assisted Magnetic Recording) write head uses the energy of optical-laser generated plasmons in a magnetic core plasmon antenna to locally heat a magnetic recording medium and reduce its coercivity and magnetic anisotropy. To enable the TAMR head to operate most effectively, the maximum gradient and value of the magnetic recording field should be at a point of the magnetic medium that is as close as possible to the point being heated. In addition, the coupling between the optical mode and the plasmon mode should be efficient so that maximum energy is transmitted to the medium. The present invention achieves both these objects by surrounding the magnetic core of a plasmon antenna by a variable thickness plasmon generating layer, whose thinnest and shortest portion is at the ABS end of the TAMR head and whose thickest and longest portion efficiently couples to the optical mode of a waveguide to produce a plasmon.

公开(公告)号：US20120008229A1

公开(公告)日：2012-01-12

申请号：US12803874

申请日：2010-07-08

申请人： Yuchen Zhou ,  Tobias Maletzky ,  Xuhui Jin ,  Zhigang Bai ,  Kenichi Takano ,  Erhard Schreck

发明人： Yuchen Zhou ,  Tobias Maletzky ,  Xuhui Jin ,  Zhigang Bai ,  Kenichi Takano ,  Erhard Schreck

IPC分类号： G11B5/02 ,  G11B5/127

CPC分类号： G11B5/314 ,  B82Y20/00 ,  G02B6/1226 ,  G11B5/3163 ,  G11B5/6088 ,  G11B2005/0021

摘要： A TAMR (Thermal Assisted Magnetic Recording) write head uses the energy of optical-laser generated plasmons in a magnetic core plasmon antenna to locally heat a magnetic recording medium and reduce its coercivity and magnetic anisotropy. To enable the TAMR head to operate most effectively, the maximum gradient and value of the magnetic recording field should be at a point of the magnetic medium that is as close as possible to the point being heated. In addition, the coupling between the optical mode and the plasmon mode should be efficient so that maximum energy is transmitted to the medium. The present invention achieves both these objects by surrounding the magnetic core of a plasmon antenna by a variable thickness plasmon generating layer, whose thinnest and shortest portion is at the ABS end of the TAMR head and whose thickest and longest portion efficiently couples to the optical mode of a waveguide to produce a plasmon.

摘要翻译： TAMR（热辅助磁记录）写头使用磁芯等离子体天线中的激光产生的等离子体激元的能量来局部加热磁记录介质并降低其矫顽力和磁各向异性。 为了使TAMR头能够最有效地运行，磁记录场的最大梯度和值应当在尽可能接近被加热点的磁介质的一个点处。 另外，光模式和等离子体激元模式之间的耦合应该是有效的，从而将最大能量传输到介质。 本发明通过可变厚度等离子体发生层围绕等离子体激元天线的磁芯来实现这两个目的，其最薄和最短部分在TAMR头的ABS端，并且其最厚和最长部分有效地耦合到光学模式 的波导产生等离子体激元。

公开(公告)号：US20110097602A1

公开(公告)日：2011-04-28

申请号：US12589598

申请日：2009-10-26

申请人： Zhigang Bai ,  Yuchen Zhou ,  Joe Smyth ,  Moris Dovek ,  Yan Wu

发明人： Zhigang Bai ,  Yuchen Zhou ,  Joe Smyth ,  Moris Dovek ,  Yan Wu

IPC分类号： G11B5/33 ,  B44C1/22

CPC分类号： G11B5/1278 ,  G11B5/315 ,  G11B5/6011 ,  Y10T428/1171

摘要： An improved magnetic shield for a perpendicular magnetic write head is disclosed. Its main feature is a pair of tabs at the shield's bottom corners. Said tabs are significantly wider at their point of attachment to the shield than further away from the shield. The end portions of each tab slope upwards (away from the ABS) at an angle of about ten degrees. A process for manufacturing the shield is also disclosed.

摘要翻译： 公开了用于垂直磁写头的改进的磁屏蔽。 它的主要特征是盾牌底角上的一对标签。 所述突片在其远离屏蔽件的位置处与屏蔽件的连接点明显更宽。 每个翼片的端部以大约十度的角度向上（远离ABS）倾斜。 还公开了一种用于制造屏蔽的工艺。

公开(公告)号：US08105705B2

公开(公告)日：2012-01-31

申请号：US12589598

申请日：2009-10-26

申请人： Zhigang Bai ,  Yuchen Zhou ,  Joe Smyth ,  Moris Dovek ,  Yan Wu

发明人： Zhigang Bai ,  Yuchen Zhou ,  Joe Smyth ,  Moris Dovek ,  Yan Wu

IPC分类号： G11B5/127 ,  G11B5/858

CPC分类号： G11B5/1278 ,  G11B5/315 ,  G11B5/6011 ,  Y10T428/1171

摘要： An improved magnetic shield for a perpendicular magnetic write head is disclosed. Its main feature is a pair of tabs at the shield's bottom corners. Said tabs are significantly wider at their point of attachment to the shield than further away from the shield. The end portions of each tab slope upwards (away from the ABS) at an angle of about ten degrees. A process for manufacturing the shield is also disclosed.

摘要翻译： 公开了用于垂直磁写头的改进的磁屏蔽。 它的主要特征是盾牌底角上的一对标签。 所述突片在其远离屏蔽件的位置处与屏蔽件的连接点明显更宽。 每个翼片的端部以大约十度的角度向上（远离ABS）倾斜。 还公开了一种用于制造屏蔽的工艺。

公开(公告)号：US20160056097A1

公开(公告)日：2016-02-25

申请号：US14556225

申请日：2014-11-30

申请人： Zhigang Bai ,  Xingshou Pang ,  Nan Xu ,  Jinzhong Yao

发明人： Zhigang Bai ,  Xingshou Pang ,  Nan Xu ,  Jinzhong Yao

IPC分类号： H01L23/495 ,  H01L21/52 ,  H01L21/78 ,  H01L21/56 ,  H01L21/311 ,  H01L21/3205 ,  H01L23/31 ,  H01L21/48

CPC分类号： H01L21/78 ,  H01L21/4842 ,  H01L21/52 ,  H01L21/561 ,  H01L23/3107 ,  H01L23/49551 ,  H01L23/49582 ,  H01L24/97 ,  H01L2224/05554 ,  H01L2224/48091 ,  H01L2224/48247 ,  H01L2924/181 ,  H01L2924/00012 ,  H01L2924/00014

摘要： A Quad Flat Non-leaded (QFN) semiconductor die package has a semiconductor die mounted on a die flag of a lead frame. A covers the semiconductor die. The housing has a base and sides. There are electrically conductive mounting feet, each of which has an exposed base portion in the base of the housing and an exposed side portion in the one of the sides of the housing. Bond wires electrically connect electrodes of the semiconductor die to respective ones of the mounting feet.

摘要翻译： 四边形扁平无引线（QFN）半导体管芯封装具有安装在引线框架的管芯标记上的半导体管芯。 A覆盖半导体管芯。 房屋有一个基地和两侧。 存在导电安装脚，每个脚在壳体的基部中具有暴露的基部，并且在壳体的一侧中的暴露的侧部。 接合线将半导体管芯的电极与相应的安装脚电连接。

公开(公告)号：US20150294929A1

公开(公告)日：2015-10-15

申请号：US14552491

申请日：2014-11-25

申请人： Zhigang Bai ,  Zhijie Wang ,  Jinzhong Yao

发明人： Zhigang Bai ,  Zhijie Wang ,  Jinzhong Yao

IPC分类号： H01L23/495 ,  H01L21/48 ,  H01L21/56 ,  H01L23/00 ,  H01L23/31

CPC分类号： H01L21/565 ,  H01L21/4839 ,  H01L21/4842 ,  H01L23/3107 ,  H01L23/49541 ,  H01L23/49551 ,  H01L23/49558 ,  H01L24/48 ,  H01L24/49 ,  H01L24/85 ,  H01L24/97 ,  H01L2224/05554 ,  H01L2224/32245 ,  H01L2224/48091 ,  H01L2224/48106 ,  H01L2224/48247 ,  H01L2224/48253 ,  H01L2224/49171 ,  H01L2224/73265 ,  H01L2224/97 ,  H01L2924/00014 ,  H01L2924/15156 ,  H01L2924/181 ,  H01L2924/00012 ,  H01L2224/45099 ,  H01L2224/45015 ,  H01L2924/207 ,  H01L2224/85 ,  H01L2224/83 ,  H01L2924/00

摘要： A semiconductor die package is assembled from a lead frame having lead fingers with a bonding end adjacent a die flag, and an elongate region extending away from the die flag. A semiconductor die is mounted on the die flag and electrodes of the semiconductor die are electrically connected to the bonding ends with bond wires. Each elongate region is bent into an external connector lead with mounting feet. The elongate region of each of the lead fingers protrudes from a housing formed from a mold compound. The mold compound extends from the housing to provide insulated support fingers molded to the external connector leads.

摘要翻译： 半导体管芯封装由具有引线指的引线框架组装，引线框具有邻近管芯标记的结合端，以及远离管芯标记延伸的细长区域。 半导体管芯安装在管芯标记上，半导体管芯的电极通过接合线与接合端电连接。 每个细长区域被弯曲成具有安装脚的外部连接器引线。 每个引线指的细长区域从由模具化合物形成的壳体突出。 模具化合物从壳体延伸，以提供模制到外部连接器引线的绝缘支撑指。

公开(公告)号：US08670213B1

公开(公告)日：2014-03-11

申请号：US13422997

申请日：2012-03-16

申请人： Wanxue Zeng ,  Weimin Si ,  Ying Hong ,  Zhigang Bai

发明人： Wanxue Zeng ,  Weimin Si ,  Ying Hong ,  Zhigang Bai

IPC分类号： G11B5/23 ,  B44C1/22

CPC分类号： G11B5/232 ,  G11B5/235 ,  G11B5/3116 ,  G11B5/3163

摘要： A writer main pole for a perpendicular magnetic recording system is provided. The writer pole has a tunable bottom gap to side gap ratio, and may be formed using deposition of a first seed layer through an ion beam deposition process, deposition of a second seed layer through a physical vapor deposition process, and deposition of a non-magnetic gap layer through a chemical vapor deposition process.

摘要翻译： 提供了一种用于垂直磁记录系统的写入器主极。 写入器极具有可调节的底部间隙与侧面间隙比，并且可以通过通过离子束沉积工艺沉积第一种子层，通过物理气相沉积工艺沉积第二籽晶层， 磁隙层通过化学气相沉积工艺。

公开(公告)号：US08611046B2

公开(公告)日：2013-12-17

申请号：US12799131

申请日：2010-04-19

申请人： Yan Wu ,  Zhigang Bai ,  Moris Dovek ,  Cherng-Chyi Han ,  Min Li ,  Jianing Zhou ,  Jiun-Ting Lee ,  Min Zheng

发明人： Yan Wu ,  Zhigang Bai ,  Moris Dovek ,  Cherng-Chyi Han ,  Min Li ,  Jianing Zhou ,  Jiun-Ting Lee ,  Min Zheng

IPC分类号： G11B5/11 ,  G11B5/23 ,  G11B5/31

CPC分类号： G11B5/105 ,  G11B5/1278 ,  G11B5/3116 ,  G11B5/315 ,  G11B5/3163

摘要： A perpendicular magnetic recording (PMR) head is fabricated with a pole tip shielded laterally by a graded side shield that is conformal to the shape of the pole tip at an upper portion of the shield but not conformal to the pole tip at a lower portion. The shield includes a trailing shield, that is conformal to the trailing edge of the pole tip and may include a leading edge shield that magnetically connects two bottom ends of the graded side shield.

摘要翻译： 垂直磁记录（PMR）头被制造成具有通过分级侧屏蔽横向屏蔽的极尖，该平面侧屏蔽保护层在屏蔽的上部处与极尖的形状保持一致，但在下部不与极尖共形。 屏蔽件包括后挡板，其与电极尖端的后缘保持一致，并且可以包括磁性连接分级侧屏蔽件的两个底端的前缘屏蔽件。