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31. 发明授权

US07701666B2 Perpendicular magnetic recording write head with a self aligned stitched write shield 失效
标题翻译：垂直磁记录写头与自对准缝合写屏蔽
公开(公告)号：US07701666B2
公开(公告)日：2010-04-20
申请号：US12001350
申请日：2007-12-11
申请人： Cherng-Chyi Han , Kenichi Takano
发明人： Cherng-Chyi Han , Kenichi Takano
IPC分类号： G11B5/17
CPC分类号： G11B5/1278 , G11B5/3116 , G11B5/3143 , G11B5/3163 , Y10T29/49041 , Y10T29/49044 , Y10T29/49048 , Y10T29/4906 , Y10T29/49062
摘要： A perpendicular magnetic recording (PMR) head with single or double coil layers has a small write shield stitched onto a main write shield. The stitched shield allows the main write pole to produce a vertical write field with sharp vertical gradients that is reduced on both sides of the write pole so that adjacent track erasures are eliminated. From a fabrication point of view, both the main pole and the stitched shield are defined and formed using a single photolithographic process, a trim mask and CMP lapping process so that the main shield can be stitched onto a self-aligned main pole and stitched shield.
摘要翻译：具有单线圈或双线圈层的垂直磁记录（PMR）头具有缝合在主写屏蔽上的小写写屏蔽。拼接屏蔽允许主写柱产生垂直写入场，其尖锐的垂直梯度在写入极的两侧减小，从而消除相邻的轨迹擦除。从制造的角度来看，使用单一光刻工艺，修剪掩模和CMP研磨工艺来限定和形成主极和缝合屏蔽物，使得主屏蔽可以缝合到自对准的主极和缝合屏蔽。

32. 发明申请

US20080094750A1 Method for making a perpendicular magnetic recording write head with a self aligned stitched write shield 失效
标题翻译：一种具有自对准缝合写屏蔽的垂直磁记录写头的方法
公开(公告)号：US20080094750A1
公开(公告)日：2008-04-24
申请号：US12001350
申请日：2007-12-11
申请人： Cherng-Chyi Han , Kenichi Takano
发明人： Cherng-Chyi Han , Kenichi Takano
IPC分类号： G11B5/147
CPC分类号： G11B5/1278 , G11B5/3116 , G11B5/3143 , G11B5/3163 , Y10T29/49041 , Y10T29/49044 , Y10T29/49048 , Y10T29/4906 , Y10T29/49062
摘要： A perpendicular magnetic recording (PMR) head with single or double coil layers has a small write shield stitched onto a main write shield. The stitched shield allows the main write pole to produce a vertical write field with sharp vertical gradients that is reduced on both sides of the write pole so that adjacent track erasures are eliminated. From a fabrication point of view, both the main pole and the stitched shield are defined and formed using a single photolithographic process, a trim mask and CMP lapping process so that the main shield can be stitched onto a self-aligned main pole and stitched shield.
摘要翻译：具有单线圈或双线圈层的垂直磁记录（PMR）头具有缝合在主写屏蔽上的小写写屏蔽。拼接屏蔽允许主写柱产生垂直写入场，其尖锐的垂直梯度在写入极的两侧减小，从而消除相邻的轨迹擦除。从制造的角度来看，使用单一光刻工艺，修剪掩模和CMP研磨工艺来限定和形成主极和缝合屏蔽物，使得主屏蔽可以缝合到自对准的主极和缝合屏蔽。

33. 发明申请

US20080055787A1 High track density recording head 审中-公开
标题翻译：高轨道密度记录头
公开(公告)号：US20080055787A1
公开(公告)日：2008-03-06
申请号：US11975955
申请日：2007-10-23
申请人： Cherng-Chyi Han , Laurie Lauchlan , Xiaomin Liu
发明人： Cherng-Chyi Han , Laurie Lauchlan , Xiaomin Liu
IPC分类号： G11B5/127 , G11B5/33
CPC分类号： G11B5/3163 , G11B5/1272 , G11B5/3116 , Y10T29/49041 , Y10T29/49043 , Y10T29/49044
摘要： For high track density recording, tighter reader and writer track width control are essential. This has been achieved by using the write gap layer as the plating seed on which the upper pole was electro-formed so that the width of the GMR pedestal serves to define the device's write track width.
摘要翻译：对于高轨道密度记录，更紧密的读写器轨道宽度控制是至关重要的。这是通过使用写间隙层作为上电极电镀的电镀种子来实现的，使得GMR基座的宽度用于限定器件的写入轨道宽度。

34. 发明申请

US20070266551A1 ABS through aggressive stitching 失效
标题翻译： ABS通过积极的拼接
公开(公告)号：US20070266551A1
公开(公告)日：2007-11-22
申请号：US11881316
申请日：2007-07-26
申请人： Cherng-Chyi Han , Mao-Min Chen , Laurie Lauchlan , Lei Zhang
发明人： Cherng-Chyi Han , Mao-Min Chen , Laurie Lauchlan , Lei Zhang
IPC分类号： G11B5/127 , H04R31/00
CPC分类号： G11B5/33 , Y10T29/49041 , Y10T29/49043 , Y10T29/49044 , Y10T29/49046 , Y10T29/49048 , Y10T29/4906 , Y10T29/49062 , Y10T29/49064
摘要： Aggressive (i.e. tight tolerance) stitching offers several advantages for magnetic write heads but at the cost of some losses during pole trimming. This problem has been overcome by replacing the alumina filler layer, that is used to protect the stitched pole during trimming, with a layer of electroplated material. Because of the superior step coverage associated with the plating method of deposition, pole trimming can then proceed without the introduction of stresses to the stitched pole while it is being trimmed.
摘要翻译：积极（即紧公差）缝合为磁性写入头提供了几个优点，但是在极修整期间以一些损失为代价。通过用一层电镀材料替换用于在修整期间保护缝合极的氧化铝填料层已经克服了这个问题。由于与沉积电镀方法相关的优越的台阶覆盖，因此可以进行极细修剪，而不会在缝合极被修剪时引入应力。

35. 发明授权

US07221539B2 Stitched shielded pole structure for a perpendicular magnetic recording write head 失效
标题翻译：用于垂直磁记录写头的拼接屏蔽极结构
公开(公告)号：US07221539B2
公开(公告)日：2007-05-22
申请号：US10814077
申请日：2004-03-31
申请人： Kenichi Takano , Cherng-Chyi Han
发明人： Kenichi Takano , Cherng-Chyi Han
IPC分类号： G11B5/31 , G11B5/23
CPC分类号： G11B5/3116 , G11B5/1278 , G11B5/3113 , G11B5/3143
摘要： A PMR write head has a stitched shield formation which results in a strong perpendicular write field with sharp vertical gradients. The shape of the stitched shield is determined by two design parameters, d=½(WSWSLE−WMPTE), and TSWS, where WSWSLE is the width of the leading edge of the stitched shield in the ABS plane, WMPTE is the width of the trailing edge of the main magnetic pole in the ABS plane and TSWS is the thickness of the stitched shield. By a proper choice of these parameters, the write field of the head is sharply limited in the cross-track direction, so that adjacent track erasures are eliminated.
摘要翻译： PMR写头具有缝合的屏蔽结构，其形成具有尖锐垂直梯度的强垂直写入场。缝合屏蔽的形状由两个设计参数d =½（W> SWSLE-> W> MP MP TE TE TE TE SUB SUB SUB SUB SUB SUB SUB SUB SUB SUB SUB SUB SUB SUB and and and and and and and and） W SHSLE 是ABS平面中缝合屏蔽的前缘的宽度，W> MPTE 是ABS平面中主磁极的后缘的宽度而T SWS 是缝合屏蔽的厚度。通过这些参数的适当选择，头部的写入场在交叉轨道方向上被大大限制，从而消除了相邻的轨迹擦除。

36. 发明申请

US20060164766A1 Exchange bias structure for abutted junction GMR sensor 失效
公开(公告)号：US20060164766A1
公开(公告)日：2006-07-27
申请号：US11375323
申请日：2006-03-14
申请人： Yun-Fei Li , Hui-Chuan Wang , Chyu-Jiuh Torng , Cherng-Chyi Han , Mao-Min Chen
发明人： Yun-Fei Li , Hui-Chuan Wang , Chyu-Jiuh Torng , Cherng-Chyi Han , Mao-Min Chen
IPC分类号： G11B5/33 , B05D5/12 , G11B5/127
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3163 , G11B5/3903 , G11B5/3932 , G11B2005/3996 , Y10T29/49044 , Y10T29/49046 , Y10T29/49048 , Y10T29/49052
摘要： Although it is known that exchange bias can be utilized in abutted junctions for longitudinal stabilization, a relatively large moment is needed to pin down the sensor edges effectively. Due to the inverse dependence of the exchange bias on the magnetic layer thickness, a large exchange bias has been difficult to achieve by the prior art. This problem has been solved by introducing a structure in which the magnetic moment of the bias layer has been approximately doubled by pinning it from both above and below through exchange with antiferromagnetic layers. Additionally, since the antiferromagnetic layer is in direct abutted contact with the free layer, it acts directly to help stabilize the sensor edge, which is an advantage over the traditional magnetostatic pinning that had been used.

37. 发明授权

US07038880B2 Method to make a planar writer with low D.C. coil resistance 失效
标题翻译：具有低直流线圈电阻的平面刻录机的方法
公开(公告)号：US07038880B2
公开(公告)日：2006-05-02
申请号：US10633132
申请日：2003-08-01
申请人： Cherng-Chyi Han , Danning Yang , Mao-Min Chen
发明人： Cherng-Chyi Han , Danning Yang , Mao-Min Chen
IPC分类号： G11B5/147
CPC分类号： G11B5/3136 , G11B5/127 , G11B5/147 , G11B5/31 , G11B5/3196
摘要： An inductive-type write head and its method of fabrication are disclosed. The write head has a vertically separated two-element planar coil of reduced resistance which is the result of forming the lower of the two coils with windings of a greater height and substantially larger cross-sectional area than those of the upper coil. The formation of a lower coil with greater height is possible because of a surface planarization that allows separating the coils by an alumina layer of minimal thickness. This method allows the reduction of coil resistance without the necessity of enlarging the head dimensions. The reduced resistance results in lower power consumption and the elimination of pole tip protrusion caused by excessive heating during operation.
摘要翻译：公开了一种电感式写入头及其制造方法。写头具有具有降低的电阻的垂直分离的两元件平面线圈，其是形成两个线圈中较低的线圈的结果，其绕组具有比上部线圈的更大的高度和大得多的横截面积的绕组。由于表面平坦化，允许通过最小厚度的氧化铝层分离线圈，所以形成较高高度的下线圈是可能的。该方法允许减小线圈电阻而不需要扩大头部尺寸。降低的电阻导致较低的功率消耗和由于操作期间的过度加热而导致的极尖突起的消除。

38. 发明授权

US07012789B2 Composite shared pole design for magnetoresistive merged heads 失效
标题翻译：用于磁阻合并头的复合共享极设计
公开(公告)号：US07012789B2
公开(公告)日：2006-03-14
申请号：US10131675
申请日：2002-04-24
申请人： Kochan Ju , Cherng-Chyi Han , Po-Kang Wang , Mao-Min Chen , Chun Liu , Jei Wei Chang
发明人： Kochan Ju , Cherng-Chyi Han , Po-Kang Wang , Mao-Min Chen , Chun Liu , Jei Wei Chang
IPC分类号： G11B5/127
CPC分类号： G11B5/3912 , G11B5/3967 , Y10T29/49044 , Y10T29/49046
摘要： A merged read/write magnetic recording head comprises a low magnetic moment first magnetic shield layer over a substrate. A read gap layer with a magnetoresistive head is formed over the first shield layer. A shared pole comprises a low magnetic moment second magnetic shield layer plated on a sputtered seed PLM layer over the read gap layer, a non-magnetic layer plated over the PLM layer and a HMM lower pole layer plated over the second magnetic shield layer. A write gap layer is formed over the first high magnetic moment pole layer of the shared pole. An upper pole comprises a high magnetic moment pole layer over the write gap layer.
摘要翻译：合并的读/写磁记录头包括在衬底上的低磁矩第一磁屏蔽层。在第一屏蔽层上形成具有磁阻头的读取间隙层。共享极包括电镀在读取间隙层上的溅射种子PLM层上的低磁矩第二磁屏蔽层，镀在PLM层上的非磁性层和镀在第二磁屏蔽层上的HMM下极层。在共享极的第一高磁矩极点上形成写间隙层。上极包括写间隙层上的高磁矩极点层。

39. 发明申请

US20060012915A1 Magnetic write head having a wider trailing edge pole structure 失效
标题翻译：具有较宽后缘极结构的磁写头
公开(公告)号：US20060012915A1
公开(公告)日：2006-01-19
申请号：US11229160
申请日：2005-09-16
申请人： Cherng-Chyi Han , Mao-Min Chen , Po Wang , Fenglin Liu
发明人： Cherng-Chyi Han , Mao-Min Chen , Po Wang , Fenglin Liu
IPC分类号： G11B5/147
CPC分类号： G11B5/3163 , G11B5/3116 , G11B5/3967 , Y10T29/49032
摘要： A trimmed upper pole piece for a magnetic write head, said pole piece having a tapered profile that is widest at its trailing edge. Such a pole piece is capable of writing narrow tracks with sharply and well defined patterns and minimal overwriting of adjacent tracks. The necessary taper is produced by using NiCr, NiFeCr, Rh or Ru as write gap filling materials which have an etch rate which is substantially equal to the etch rate of the other layers forming the pole piece and are highly corrosion resistant. As a result, the write gap does not protrude to mask the effects of the ion-beam etch used to form the taper.
摘要翻译：用于磁写头的经修剪的上极片，所述极片具有在其后缘处最宽的锥形轮廓。这样的极片能够以清晰明确的图案和相邻轨迹的最小重写来写入窄轨道。通过使用NiCr，NiFeCr，Rh或Ru作为写入间隙填充材料产生必要的锥度，其具有基本上等于形成极片的其它层的蚀刻速率的蚀刻速率并且具有高耐腐蚀性。结果，写入间隙不会突出以掩盖用于形成锥形的离子束蚀刻的效果。

40. 发明申请

US20050186797A1 ABS through aggressive stitching 失效
标题翻译： ABS通过积极的拼接
公开(公告)号：US20050186797A1
公开(公告)日：2005-08-25
申请号：US10782496
申请日：2004-02-19
申请人： Cherng-Chyi Han , Mao-Min Chen , Laurie Lauchlan , Lei Zhang
发明人： Cherng-Chyi Han , Mao-Min Chen , Laurie Lauchlan , Lei Zhang
IPC分类号： G11B5/33 , H01L21/302 , H01L21/461
CPC分类号： G11B5/33 , Y10T29/49041 , Y10T29/49043 , Y10T29/49044 , Y10T29/49046 , Y10T29/49048 , Y10T29/4906 , Y10T29/49062 , Y10T29/49064
摘要： Aggressive (i.e. tight tolerance) stitching offers several advantages for magnetic write heads but at the cost of some losses during pole trimming. This problem has been overcome by replacing the alumina filler layer, that is used to protect the stitched pole during trimming, with a layer of electro-plated material. Because of the superior step coverage associated with the plating method of deposition, pole trimming can then proceed without the introduction of stresses to the stitched pole while it is being trimmed.
摘要翻译：积极（即紧公差）缝合为磁性写入头提供了几个优点，但是在极修整期间以一些损失为代价。通过用一层电镀材料代替在修整期间用于保护缝合极的氧化铝填料层已经克服了这个问题。由于与沉积电镀方法相关的优越的台阶覆盖，因此可以进行极细修剪，而不会在缝合极被修剪时引入应力。

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