公开(公告)号：US06221559B1

公开(公告)日：2001-04-24

申请号：US09222480

申请日：1998-12-29

申请人： Edward Hinpong Lee ,  Peter Beverley Powell Phipps

发明人： Edward Hinpong Lee ,  Peter Beverley Powell Phipps

IPC分类号： G03F720

CPC分类号： G11B5/3967 ,  G11B5/3103 ,  G11B5/3116 ,  G11B5/313

摘要： The front edge of the a zero throat height (ZTH) defining insulation layer in a magnetic head is formed with a central portion which is centered with respect to a second pole tip with first and second lateral portions which are on each side of the central portion and parallel to the ABS. The central portion is recessed from the ABS a distance appropriate for defining the ZTH between the first and second pole pieces of the head and the first and second lateral edges are further recessed into the head so as to increase the volume of the overcoat layer between the ABS and the first and second lateral edges. The increased volume of the overcoat layer better absorbs stresses and strains due to shock loading and temperature so as to reduce cracking of the head at the ABS.

摘要翻译： 在磁头中限定绝缘层的零喉部高度（ZTH）的前边缘形成有中心部分，该中心部分相对于第二极端部居中，第一和第二侧向部分在中心部分的每一侧 并与ABS平行。 中心部分从ABS凹入一定距离，用于限定头部的第一和第二极片之间的ZTH，并且第一和第二侧边缘进一步凹入头部，以便增加外罩层之间的体积 ABS和第一和第二侧边缘。 外涂层的体积增加更好地吸收由于冲击载荷和温度引起的应力和应变，从而减少ABS在头部的开裂。

公开(公告)号：US06176005B1

公开(公告)日：2001-01-23

申请号：US09212118

申请日：1998-12-15

申请人： Glen Adam Garfunkel ,  Wen-Chien David Hsiao ,  Edward Hinpong Lee ,  Douglas Johnson Werner

发明人： Glen Adam Garfunkel ,  Wen-Chien David Hsiao ,  Edward Hinpong Lee ,  Douglas Johnson Werner

IPC分类号： G11B5127

CPC分类号： G11B5/3903 ,  G11B5/3116 ,  G11B5/313 ,  G11B5/3163 ,  G11B5/3967 ,  G11B5/40 ,  Y10T29/49044 ,  Y10T29/49046 ,  Y10T29/49048

摘要： The present invention extends the high resistance lead layers of a read head straight back into the head from each of the first and second edges of the read sensor. This lessens the length of each of the high resistance lead layers so that they do not have to be made thicker to satisfy resistance requirements. Accordingly, a lateral width of each high resistance lead portion along the ABS and a thickness thereof are chosen so as to minimize the thickness while yet satisfying the resistance requirements. Further, a method of making the first and second lead layers is provided that minimizes the thickness of the high resistance lead layers. Instead of constructing the high resistance lead layers first, the present method constructs the high resistance lead layers after defining a stripe height of the read sensor so that the lateral expanse of the high resistance lead layers is not altered by ion milling, which ion milling increases the resistance of the high resistance lead layers.

摘要翻译： 本发明将读头的高电阻引线层从读取传感器的第一和第二边缘的每一个直接延伸到头部。 这降低了每个高电阻引线层的长度，使得它们不必被制成更厚以满足电阻要求。 因此，选择沿着ABS的每个高电阻引线部分的横向宽度及其厚度，以便在满足电阻要求的同时使厚度最小化。 此外，提供了制造第一和第二引线层的方法，其使得高电阻引线层的厚度最小化。 首先，不是首先构造高电阻引线层，而是在限定读取传感器的条带高度之后构造高电阻引线层，使得高电阻引线层的横向扩展不会被离子铣削改变，离子铣削增加 高电阻铅层的电阻。

公开(公告)号：US6122144A

公开(公告)日：2000-09-19

申请号：US995890

申请日：1997-12-22

申请人： Thomas Young Chang ,  David Eugene Heim ,  Edward Hinpong Lee

发明人： Thomas Young Chang ,  David Eugene Heim ,  Edward Hinpong Lee

IPC分类号： G11B5/012 ,  G11B5/31 ,  G11B5/39 ,  G11B5/187

CPC分类号： G11B5/3967 ,  G11B5/3116 ,  G11B5/012 ,  G11B5/312

摘要： A write head is provided that has an "I" shaped pole tip structure. Flux leakage between bottom corners of a top horizontal component to a bottom horizontal component of the "I" shaped pole tip structure is obviated by rounding or tapering the side edges of the top horizontal component as it recesses into the head from the ABS. The angle taken by each recessed side edge with respect to the ABS edge is less than 90.degree. so that flux concentrations at the corners are minimized and flux leakage from these corners to the bottom horizontal component is substantially eliminated. In another embodiment of the invention the top horizontal component is configured with a necked down portion between front and rear portions for minimizing flux saturation of other pole tip components.

摘要翻译： 提供具有“I”形极尖结构的写头。 顶部水平部件的底角与“I”形极端部结构的底部水平部件之间的通量泄漏通过使顶部水平部件的侧边缘从ABS凹入到头部中而使其侧边缘变圆或变细来消除。 每个凹入的侧边缘相对于ABS边缘所采取的角度小于90°，​​使得拐角处的通量浓度最小化，并且基本上消除了从这些拐角到底部水平分量的磁通泄漏。 在本发明的另一个实施例中，顶部水平部件配置有在前部和后部之间的颈缩部分，用于最小化其它极尖部件的通量饱和度。

公开(公告)号：US6119331A

公开(公告)日：2000-09-19

申请号：US889258

申请日：1997-07-08

申请人： Thomas Young Chang ,  Edward Hinpong Lee ,  Jhy-Shuey Jerry Lo

发明人： Thomas Young Chang ,  Edward Hinpong Lee ,  Jhy-Shuey Jerry Lo

IPC分类号： G11B5/31 ,  G11B5/39 ,  G11B5/127

CPC分类号： G11B5/3967 ,  G11B5/3116 ,  G11B5/3163 ,  Y10T29/49044 ,  Y10T29/49048

摘要： In the manufacture of a combined magnetic head, milling time for notching a first pole piece of the head's write element is reduced by constructing the first pole piece with a notching layer on a first pole piece layer, the notching layer having first and second corners adjacent first and second side walls of the second pole tip. The first pole piece layer has a wide lateral expanse, and the notching layer has a narrow lateral expanse. The width of the notching layer is preferably 0.2 .mu.m to 2.0 .mu.m wider than a target track width of the second pole tip. With this arrangement, the notching layer has first and second side walls that project 0.10 .mu.m to 1.0 .mu.m, laterally, beyond first and second side walls, respectively, of the second pole tip. The thickness of the notching layer is preferably between 0.1 .mu.m to 1.0 .mu.m. Accordingly, full notching of the notching layer can be achieved by milling a small corner in a range of 0.10 .mu.m by 0.10 .mu.m to 1.0 .mu.m by 1.0 .mu.m, as seen in an ABS view. The gap layer is formed on the notching layer, followed by forming the second pole tip on the gap layer. Milling at an angle is then employed to mill through the gap layer and notch the notching layer. In comparison to milling a prior art large lateral expanse of the first pole piece to achieve notching, milling the small corner of the notching layer requires a very short milling time. This results in less consumption of the second pole tip, so that better control of a final track width can be accomplished. Also, since there is less consumption of the top of the second pole tip, the aspect ratio of photoresist employed to construct the second pole tip is reduced, so as to enhance the line width of the second pole tip. Further, there is less redeposited material to clean up after the milling cycle. All of these factors reduce the process time and increase manufacturing throughput.

公开(公告)号：US6085406A

公开(公告)日：2000-07-11

申请号：US176387

申请日：1998-10-21

申请人： Glen Adam Garfunkel ,  Wen Chien (David) Hsiao ,  Edward Hinpong Lee ,  Douglas Johnson Werner

发明人： Glen Adam Garfunkel ,  Wen Chien (David) Hsiao ,  Edward Hinpong Lee ,  Douglas Johnson Werner

IPC分类号： G11B5/31 ,  G11B5/39 ,  G11B5/42

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/3103 ,  G11B5/3903 ,  G11B5/3967 ,  G11B2005/3996 ,  G11B5/3109 ,  G11B5/3163 ,  Y10T29/49044

摘要： The high resistance lead layers of a read head extend straight back into the head from each of the first and second edges of the read sensor. This lessens the length of each of the high resistance lead layers so that they do not have to be made thicker to satisfy resistance requirements. Accordingly, a lateral width of each high resistance lead portion along the ABS and a thickness thereof are chosen so as to minimize the thickness while yet satisfying the resistance requirements. Further, a method of making the first and second lead layers is provided that minimizes the thickness of the high resistance lead layers. Instead of constructing the high resistance lead layers first, the present method constructs the high resistance lead layers last so that the high resistance lead layers are not altered by subsequent processing steps.

摘要翻译： 读头的高电阻引线层从读取传感器的第一和第二边缘的每一个直接返回到头部。 这降低了每个高电阻引线层的长度，使得它们不必被制成更厚以满足电阻要求。 因此，选择沿着ABS的每个高电阻引线部分的横向宽度及其厚度，以便在满足电阻要求的同时使厚度最小化。 此外，提供了制造第一和第二引线层的方法，其使得高电阻引线层的厚度最小化。 首先，代替构造高电阻引线层，本方法构造最后的高电阻引线层，使得高电阻引线层不会随后的处理步骤而改变。

公开(公告)号：US06542331B1

公开(公告)日：2003-04-01

申请号：US09546576

申请日：2000-04-10

申请人： Thomas Young Chang ,  Terence Tin-Lok Lam ,  Edward HinPong Lee ,  Samuel Wonder Yuan

发明人： Thomas Young Chang ,  Terence Tin-Lok Lam ,  Edward HinPong Lee ,  Samuel Wonder Yuan

IPC分类号： G11B531

CPC分类号： G11B5/313 ,  G11B5/1272 ,  G11B5/17 ,  G11B5/1871 ,  G11B5/312

摘要： The magnetic head of the present invention includes a P1 pole having an opening formed therethrough, and a P2 pole that is formed over the opening. A second magnetic pole tip is positioned relative to the first magnetic pole such that the first magnetic pole is symmetrically disposed relative to the second magnetic pole tip. Induction coils may be helically wound around portions of the first and/or second magnetic poles, or, alternatively, a planar, spiral induction coil may be fabricated for use with the first and second magnetic poles. An enhanced embodiment includes a first magnetic pole tip piece having a length that defines the throat length of the magnetic head and a thickness that increases the gap at rearward portions of the second magnetic pole tip of the magnetic head.

摘要翻译： 本发明的磁头包括具有穿过其形成的开口的P1极和形成在开口上的P2极。 第二磁极尖端相对于第一磁极定位，使得第一磁极相对于第二磁极尖对称设置。 感应线圈可以螺旋地卷绕在第一和/或第二磁极的一部分周围，或者，可以制造平面的螺旋感应线圈，以与第一和第二磁极一起使用。 增强实施例包括具有限定磁头的喉部长度的长度的第一磁极尖端件和增加磁头的第二磁极端部的后部的间隙的厚度。

公开(公告)号：US06325947B1

公开(公告)日：2001-12-04

申请号：US09431393

申请日：1999-11-01

申请人： Glen Adam Garfunkel ,  Edward Hinpong Lee ,  Joseph Francis Smyth ,  Samuel Wonder Yuan

发明人： Glen Adam Garfunkel ,  Edward Hinpong Lee ,  Joseph Francis Smyth ,  Samuel Wonder Yuan

IPC分类号： B44C122

摘要： A method for forming a merged thin film magnetic head having a first shield layer and a combined second shield and bottom pole piece layer arranged in a sandwich supporting a read sensor therebetween at the pole tip region. The combined second shield and bottom pole piece layer are magnetically coupled with the first shield layer at the pole tip end of the yoke region adjacent the read sensor, and overlaying and magnetically coupled with the first shield layer at the back gap region. A patterned opening is provided in the combined second shield and bottom pole piece layer at the yoke region thereof to expose the first shield layer and form a flat planarization surface thereon. A plurality of stacked thin film coil layers are provided in the patterned opening, and a top pole piece layer overlies the thin film coil at the yoke region, overlies the bottom pole piece at the pole tip region providing a pole tip and gap thereat, and overlies the bottom pole piece at the back gap region. The patterned opening which exposes the first shield layer allows the provision of a multi-layer coil while maintaining a low profile of the head.

摘要翻译： 一种用于形成合并的薄膜磁头的方法，所述薄膜磁头具有第一屏蔽层和组合的第二屏蔽和底极片层，所述第二屏蔽层和底极片层以夹持状态支撑在极尖区域处的读取传感器。 组合的第二屏蔽和底极片层与邻近读取传感器的磁轭区域的极端部处的第一屏蔽层磁耦合，并且在后隙区域与第一屏蔽层重叠并磁耦合。 在组合的第二屏蔽层和底极片层中设置图案化的开口，以在其磁轭区域露出第一屏蔽层并在其上形成平坦的平坦化表面。 在图案化开口中设置多个堆叠的薄膜线圈层，并且顶极片层覆盖在磁轭区域处的薄膜线圈，在极尖部分处覆盖提供极尖和间隙的极极片，并且 在后隙区域覆盖底极片。 暴露第一屏蔽层的图案化开口允许提供多层线圈，同时保持头部的低轮廓。

公开(公告)号：US06286200B1

公开(公告)日：2001-09-11

申请号：US09360863

申请日：1999-07-23

申请人： Bin Huang ,  Edward Hinpong Lee

发明人： Bin Huang ,  Edward Hinpong Lee

IPC分类号： G11B5127

CPC分类号： G11B5/3116 ,  G11B5/313 ,  G11B5/3163 ,  G11B5/3166 ,  Y10T29/49034 ,  Y10T29/49041 ,  Y10T29/49044 ,  Y10T29/49046 ,  Y10T29/49048 ,  Y10T29/49052 ,  Y10T29/49789

摘要： A method of making a second pole piece layer that has a yoke portion between a pole tip portion and a back gap portion comprising the steps of forming a first photoresist layer that is sensitive to a first bandwidth of light, forming a second photoresist layer on the first photoresist layer that is sensitive to a second bandwidth of light that is different from the first bandwidth of light, after forming the first and second photoresist layers, photopatterning the second photoresist layer with the second bandwidth of light to provide an opening at pole tip, yoke and back gap sites wherein the pole tip, yoke and back gap sites define perimeters for the pole tip, yoke and back gap portions respectively, after photopatterning the second photoresist layer, photopatterning the first photoresist layer with the first bandwidth of light to provide openings at the pole tip, yoke and back gap sites and then plating the pole tip, yoke and back gap portions of the second pole piece layer in the openings of the first and second photoresist layers.

摘要翻译： 一种制造在极尖部分和后间隙部分之间具有轭部分的第二极片层的方法，包括以下步骤：形成对第一带宽光敏感的第一光致抗蚀剂层，在第一光致抗蚀剂层上形成第二光致抗蚀剂层 在形成第一和第二光致抗蚀剂层之后，在形成第一和第二光致抗蚀剂层之后，对与第一带宽光不同的第二带宽敏感的第一光致抗蚀剂层，以第二带宽光对第二光致抗蚀剂层进行光图案化以在极尖提供开口， 磁轭和后间隙位置，其中磁极末端，磁轭和后间隙位置分别在对第二光致抗蚀剂层进行图案化之后分别限定极尖，磁轭和后间隙部分的周长，对第一光致抗蚀剂层进行第一带宽光图案化以提供开口 在极尖，磁轭和后隙位置，然后电镀第二极片层的极尖，磁轭和后间隙部分 第一和第二光致抗蚀剂层的结合。

公开(公告)号：US6034848A

公开(公告)日：2000-03-07

申请号：US64932

申请日：1998-04-22

申请人： Glen Adam Garfunkel ,  Edward Hinpong Lee ,  Joseph Francis Smyth ,  Samuel Wonder Yuan

发明人： Glen Adam Garfunkel ,  Edward Hinpong Lee ,  Joseph Francis Smyth ,  Samuel Wonder Yuan

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

CPC分类号： G11B5/3967 ,  G11B5/313 ,  G11B5/3163 ,  G11B5/332 ,  Y10T29/49021 ,  Y10T29/49044 ,  Y10T29/49046

摘要： Disclosed is a merged thin film magnetic head having a first shield layer and a combined second shield and bottom pole piece layer arranged in a sandwich supporting a read sensor therebetween at the pole tip region. The combined second shield and bottom pole piece layer are magnetically coupled with the first shield layer at the pole tip end of the yoke region adjacent the read sensor, and overlaying and magnetically coupled with the first shield layer at the back gap region. A patterned opening is provided in the combined second shield and bottom pole piece layer at the yoke region thereof to expose the first shield layer and form a flat planarization surface thereon. A plurality of stacked thin film coil layers are provided in the patterned opening, and a top pole piece layer overlies the thin film coil at the yoke region, overlies the bottom pole piece at the pole tip region providing a pole tip and gap thereat, and overlies the bottom pole piece at the back gap region. The patterned opening which exposes the first shield layer allows the provision of a multi-layer coil while maintaining a low profile of the head.

摘要翻译： 公开了一种合并的薄膜磁头，其具有第一屏蔽层和组合的第二屏蔽层和底极片层，其布置成在极尖区域处支撑读取传感器的夹层。 组合的第二屏蔽和底极片层与邻近读取传感器的磁轭区域的极端部处的第一屏蔽层磁耦合，并且在后隙区域与第一屏蔽层重叠并磁耦合。 在组合的第二屏蔽层和底极片层中设置图案化的开口，以在其磁轭区域露出第一屏蔽层并在其上形成平坦的平坦化表面。 在图案化开口中设置多个堆叠的薄膜线圈层，并且顶极片层覆盖在磁轭区域处的薄膜线圈，在极尖部分处覆盖提供极尖和间隙的极极片，并且 在后隙区域覆盖底极片。 暴露第一屏蔽层的图案化开口允许提供多层线圈，同时保持头部的低轮廓。

公开(公告)号：US06570743B1

公开(公告)日：2003-05-27

申请号：US09616178

申请日：2000-07-14

申请人： Glen Adam Garfunkel ,  Wen-Chien (David) Hsiao ,  Edward Hinpong Lee ,  Douglas Johnson Werner

发明人： Glen Adam Garfunkel ,  Wen-Chien (David) Hsiao ,  Edward Hinpong Lee ,  Douglas Johnson Werner

IPC分类号： G11B539

CPC分类号： G11B5/3903 ,  G11B5/3116 ,  G11B5/313 ,  G11B5/3163 ,  G11B5/3967 ,  G11B5/40 ,  Y10T29/49044 ,  Y10T29/49046 ,  Y10T29/49048

摘要： The present invention extends the high resistance lead layers of a read head straight back into the head from each of the first and second edges of the read sensor. This lessens the length of each of the high resistance lead layers so that they do not have to be made thicker to satisfy resistance requirements. Accordingly, a lateral width of each high resistance lead portion along the ABS and a thickness thereof are chosen so as to minimize the thickness while yet satisfying the resistance requirements. Further, a method of making the first and second lead layers is provided that minimizes the thickness of the high resistance lead layers. Instead of constructing the high resistance lead layers first, the present method constructs the high resistance lead layers after defining a stripe height of the read sensor so that the lateral expanse of the high resistance lead layers is not altered by ion milling, which ion milling increases the resistance of the high resistance lead layers.

摘要翻译： 本发明将读头的高电阻引线层从读取传感器的第一和第二边缘的每一个直接延伸到头部。 这降低了每个高电阻引线层的长度，使得它们不必被制成更厚以满足电阻要求。 因此，选择沿着ABS的每个高电阻引线部分的横向宽度及其厚度，以便在满足电阻要求的同时使厚度最小化。 此外，提供了制造第一和第二引线层的方法，其使得高电阻引线层的厚度最小化。 首先，不是首先构造高电阻引线层，而是在限定读取传感器的条带高度之后构建高电阻引线层，使得高电阻引线层的横向扩展不会通过离子铣削而改变，离子铣削增加 高电阻铅层的电阻。