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101. 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。

102. 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.

103. 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。

104. 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。

105. 发明申请

US20060002184A1 Novel underlayer for high performance magnetic tunneling junction MRAM 有权
标题翻译：用于高性能磁隧道结MRAM的新型底层
公开(公告)号：US20060002184A1
公开(公告)日：2006-01-05
申请号：US10881445
申请日：2004-06-30
申请人： Liubo Hong , Cheng Horng , Mao-Min Chen , Ru-Yin Tong
发明人： Liubo Hong , Cheng Horng , Mao-Min Chen , Ru-Yin Tong
IPC分类号： G11C11/14
CPC分类号： H01L43/12 , B82Y10/00 , B82Y25/00 , B82Y40/00 , G01R33/09 , G01R33/093 , G01R33/098 , G11B5/3906 , G11B5/3909 , G11C11/161 , G11C11/1673 , H01F10/30 , H01F10/3254 , H01F10/3259 , H01F10/3272 , H01F10/3295 , H01F41/307 , H01L43/08 , H01L43/10 , Y10T428/1114
摘要： An MRAM structure is disclosed in which the bottom electrode has an amorphous TaN capping layer to consistently provide smooth and dense growth for AFM, pinned, tunnel barrier, and free layers in an overlying MTJ. Unlike a conventional Ta capping layer, TaN is oxidation resistant and has high resistivity to avoid shunting of a sense current caused by redeposition of the capping layer on the sidewalls of the tunnel barrier layer. Alternatively, the α-TaN layer is the seed layer in the MTJ. Furthermore, the seed layer may be a composite layer comprised of a NiCr, NiFe, or NiFeCr layer on the α-TaN layer. An α-TaN capping layer or seed layer can also be used in a TMR read head. An MTJ formed on an α-TaN capping layer has a high MR ratio, high Vb, and a RA similar to results obtained from MTJs based on an optimized Ta capping layer.
摘要翻译：公开了一种MRAM结构，其中底部电极具有无定形TaN覆盖层，以一致地提供在覆盖的MTJ中的AFM，固定，隧道势垒和自由层的平滑且致密的生长。与传统的Ta覆盖层不同，TaN是抗氧化的并且具有高电阻率以避免由于覆盖层在隧道势垒层的侧壁上的再沉积引起的感测电流的分流。或者，α-TaN层是MTJ中的种子层。此外，种子层可以是由α-TaN层上的NiCr，NiFe或NiFeCr层构成的复合层。也可以在TMR读取头中使用α-TaN覆盖层或种子层。在α-TaN覆盖层上形成的MTJ具有高MR比，高Vb和RA，其类似于基于优化的Ta覆盖层的MTJ获得的结果。

106. 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。

107. 发明申请

US20050094319A1 Two-piece magnetic shield having improved heat dissipation 有权
标题翻译：具有改善散热性能的两件式磁屏蔽
公开(公告)号：US20050094319A1
公开(公告)日：2005-05-05
申请号：US10696431
申请日：2003-10-29
申请人： Cherng-Chyi Han , Rod Lee , Mao-Min Chen , Pokang Wang
发明人： Cherng-Chyi Han , Rod Lee , Mao-Min Chen , Pokang Wang
IPC分类号： G11B5/127 , G11B5/31 , G11B5/33
CPC分类号： G11B5/3136 , G11B5/3133 , Y10T29/49039 , Y10T29/49043 , Y10T29/49046 , Y10T29/49048 , Y10T29/49052
摘要： Problems such as thermal pole tip protrusion result from thermal mismatch between the alumina and pole material during the writing process. This, and similar problems due to inadequate heat dissipation, have been overcome by dividing the bottom shield into two pieces both of which sit on top of a non-magnetic heat sink. Heat generated by the coil during writing is transferred to the non-magnetic heat sink whence it gets transferred to the substrate. With this approach, the head not only benefits from less field disturbance due to the small shield but also improves heat dissipation from the additional heat sink
摘要翻译：在写入过程中，由于氧化铝和极材料之间的热失配，导致热极尖突出的问题。通过将底部屏蔽分成两个位于非磁性散热器顶部的两个部件，已经克服了由于不充分散热引起的这种和类似的问题。在写入期间由线圈产生的热量被传递到非磁性散热器，因为它被传送到基板。采用这种方法，由于小屏蔽，头部不但受益于较少的场干扰，还可以改善附加散热器的散热

108. 发明申请

US20050024770A1 Low DC coil resistance planar writer 失效
标题翻译：低直流线圈电阻平面写入器
公开(公告)号：US20050024770A1
公开(公告)日：2005-02-03
申请号：US10633133
申请日：2003-08-01
申请人： Cherng Chyi Han , Mao-Min Chen
发明人： Cherng Chyi Han , Mao-Min Chen
IPC分类号： G11B5/147 , G11B5/31
CPC分类号： G11B5/3103 , Y10T29/49032
摘要： Present processes used for planarizing a cavity filled with a coil and hard baked photoresist require that a significant amount of the thickness of the coils be removed. This increases the DC resistance of the coil. In the present invention, CMP is terminated as soon as the coils are exposed, allowing their full thickness to be retained and resulting in minimum DC resistance. Application of this process to the manufacture of a planar magnetic write head is described.
摘要翻译：用于平坦化填充有线圈和硬烘烤光致抗蚀剂的空腔的现有方法需要去除大量的线圈厚度。这增加了线圈的直流电阻。在本发明中，一旦线圈暴露，CMP就终止，允许其保持其全部厚度并且导致最小的直流电阻。描述了该方法在平面磁写头的制造中的应用。

109. 发明申请

US20050024769A1 Short yoke length planar writer with low DC coil resistance 有权
标题翻译：具有低直流线圈电阻的短轭长度平面刻录机
公开(公告)号：US20050024769A1
公开(公告)日：2005-02-03
申请号：US10633105
申请日：2003-08-01
申请人： Cherng Han , Mao-Min Chen
发明人： Cherng Han , Mao-Min Chen
IPC分类号： G11B5/147 , G11B5/31 , G11B5/39
CPC分类号： G11B5/3932 , G11B5/3106 , Y10T29/49032
摘要： Present processes used for planarizing a cavity filled with a coil and hard baked photoresist require that a significant amount of the thickness of the coils be removed. This increases the DC resistance of the coil. In the present invention a layer of alumina is deposited onto the surface of the excess photoresist, following which CMP is initiated. The presence of the alumina serves to stabilize the photoresist so that it does not delaminate. CMP is terminated as soon as the coils are exposed, allowing their full thickness to be retained and resulting in minimum DC resistance. Application of this process to the manufacture of a two coil planar magnetic write head is described.
摘要翻译：用于平坦化填充有线圈和硬烘烤光致抗蚀剂的空腔的现有方法需要去除大量的线圈厚度。这增加了线圈的直流电阻。在本发明中，一层氧化铝沉积在多余的光致抗蚀剂的表面上，随后开始CMP。氧化铝的存在用于使光致抗蚀剂稳定，使其不分层。一旦线圈被暴露，CMP就被终止，允许其保持其全部厚度并导致最小的直流电阻。描述了该方法在制造双线圈平面磁性写入头上的应用。

110. 发明授权

US06583966B2 Method to make a high data rate stitched writer for a giant magneto-resistive head 失效
标题翻译：为巨型磁阻头制作高数据速率缝合笔记的方法
公开(公告)号：US06583966B2
公开(公告)日：2003-06-24
申请号：US09956360
申请日：2001-09-20
申请人： Cherng-Chyi Han , Chyu Jiuh Torng , Mao-Min Chen
发明人： Cherng-Chyi Han , Chyu Jiuh Torng , Mao-Min Chen
IPC分类号： G11B5139
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3146 , G11B5/3163 , G11B5/3967 , G11B2005/3996 , Y10T29/49021 , Y10T29/49025 , Y10T29/49032
摘要： A high data-rate stitched pole magnetic read/write-head combining sputtered and plated high magnetic moment materials and a method for fabricating same. The plating and stitching aspects of this fabrication allow the formation of a very narrow write-head, while the sputtering permits the use of high magnetic moment materials having high resistivity and low coercivity.
摘要翻译：组合溅射和电镀高磁矩材料的高数据速率缝合磁极读/写头及其制造方法。该制造的电镀和缝合方面允许形成非常窄的写入头，而溅射允许使用具有高电阻率和低矫顽力的高磁矩材料。

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