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    • 4. 发明授权
      US6158107A Inverted merged MR head with plated notched first pole tip and self-aligned second pole tip 失效
    • Inverted merged MR head with plated notched first pole tip and self-aligned second pole tip
    • 反向合并磁头与电镀缺口的第一极端和自对准的第二极端
    • US6158107A
    • 2000-12-12
    • US54055
    • 1998-04-02
    • Thomas Young Chang , Jyh-Shuey Jerry Lo
    • Thomas Young Chang , Jyh-Shuey Jerry Lo
    • G11B5/23 , G11B5/31 , G11B5/39 , G11B5/127 , G11B5/187
    • G11B5/3116 , G11B5/3163 , G11B5/232 , G11B5/3967 , Y10T29/49032 , Y10T29/49044 , Y10T29/49046
    • A method makes an inverted merged MR head with a second pole tip which is self-aligned with a top first pole tip. After forming a bottom first pole tip layer a top first pole tip is frame plated thereon with a width that defines a track width of the merged MR head. A photoresist layer, which is employed in the frame plating of the top first pole tip, is then soft baked which causes a photoresist opening above the top first pole tip to have sloping side edges which form a recess. An electrically-conductive sacrificial layer, such as copper, is then plated into the recess on top of the top first pole tip and the photoresist is removed. A forming layer, such as alumina, is then deposited and lapped so that the forming layer and the sacrificial layer have top surfaces that are flush with respect to one another. The sacrificial layer is then removed by an etchant that will not attack the materials of the pole tips and the forming layer. The forming layer now has a recess with sloping edges into which a gap layer, a seedlayer and a second pole tip layer are deposited. By this method the second pole tip is self-aligned with the top first pole tip with the second pole tip having a bottom that is substantially the same width as the top of the top first pole tip.
    • 一种方法使得具有与顶部第一极尖自身对准的第二极尖的反向合并MR头。 在形成底部第一极尖端层之后，顶部第一极端部被框架镀覆在其上，其宽度限定了合并的MR头的轨道宽度。 用于顶部第一极尖端的框架电镀中的光致抗蚀剂层然后被软烘烤，这使得顶部第一极尖端上方的光致抗蚀剂开口具有形成凹部的倾斜侧边缘。 然后将诸如铜的导电牺牲层电镀到顶部第一极尖顶部的凹部中，并且去除光致抗蚀剂。 然后沉积和研磨诸如氧化铝的成形层，使得成形层和牺牲层具有相对于彼此齐平的顶表面。 然后通过不会攻击极尖和成形层的材料的蚀刻剂去除牺牲层。 成形层现在具有倾斜边缘的凹部，间隙层，籽晶层和第二极尖端层沉积到该凹部中。 通过该方法，第二极尖与顶部第一极尖自对准，第二极尖具有与顶部第一极尖的顶部基本相同的宽度的底部。
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Global Dossier Espacenet 法律信息 同族专利 专利引用
    • 5. 发明授权
      US06747850B1 Merged magnetic head with a first pole piece notching layer 失效
    • Merged magnetic head with a first pole piece notching layer
    • 合并磁头与第一极片刻痕层
    • US06747850B1
    • 2004-06-08
    • US09721853
    • 2000-11-24
    • Thomas Young Chang , Edward Hinpong Lee , Jyh-Shuey Jerry Lo
    • Thomas Young Chang , Edward Hinpong Lee , Jyh-Shuey Jerry Lo
    • G11B539
    • G11B5/3967 , G11B5/024 , G11B5/23 , G11B5/232 , G11B5/3116 , G11B5/3163 , Y10T29/49044 , Y10T29/49046
    • A single-sided, notched write head is provided for writing narrow erase band servo tracks as well as a double-notched write head, and for writing data tracks better than a double-notched write head. The single-sided, notched write head writes a narrow erase band on the notched side and a wide erase band on the unnotched side. In one embodiment, only one side of the first pole piece layer is notched, and in another embodiment a first side of the first pole piece layer is notched more than a second side. By writing servo tracks only a fraction of the track width of the write head, a wide erase band region is overwritten so that a narrow erase band is on each side of the servo track. Data tracks are written with a narrow erase band on one side and a wide erase band on the other side. The wide erase band on one side of the data track allows more flexibility in spacing the read head from adjacent tracks. The single-sided, notched write head can be manufactured with methods that require less processing time than a double-notched write head. In one method, a notching layer is employed where removal of a small corner of the notching layer provides the first pole piece with a notch. Other methods employ photoresist to protect the side of the first pole piece that is not to be notched, and/or oscillating the workpiece less than 360° so that milling is more concentrated at the notch site.
    • 提供单面，带缺口的写入头，用于写入窄擦除带伺服磁道以及双切口写入头，并且用于比双切口写入头更好地写入数据轨道。 单面缺口写头在缺口侧写入窄擦除带，并在无缺口侧写入宽擦除带。 在一个实施例中，仅第一极靴层的一侧被切口，而在另一实施例中，第一极靴层的第一侧比第二侧更多地被切口。 通过仅将写入磁道的磁道宽度的一部分写入伺服磁道，将覆盖宽的擦除带区域，使得在伺服磁道的每一侧上存在窄的擦除带。 数据磁道在一侧写入窄的擦除频带，另一侧写入宽的擦除频带。 在数据轨道的一侧上的宽擦除带允许在读取头与相邻轨道间隔距离方面更加灵活。 单面，缺口写头可以使用比双切口写头要少的处理时间的方法制造。 在一种方法中，采用切口层，其中切口凹陷层的小角的移除为第一极片提供凹口。 其他方法使用光致抗蚀剂来保护第一极靴的不被切口的一侧和/或使工件摆动小于360°，使得铣削更集中在切口部位。
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Espacenet 法律信息 同族专利 专利引用
    • 6. 发明授权
      US06683759B1 First pole piece of a write head with a notching layer in a combined magnetic head 失效
    • First pole piece of a write head with a notching layer in a combined magnetic head
    • 写磁头的第一极片与组合磁头中的切口层
    • US06683759B1
    • 2004-01-27
    • US09549802
    • 2000-04-14
    • Thomas Young Chang , Edward Hinpong Lee , Jhy-Shuey Jerry Lo
    • Thomas Young Chang , Edward Hinpong Lee , Jhy-Shuey Jerry Lo
    • G11B5127
    • G11B5/3967 , G11B5/3116 , G11B5/3163 , Y10T29/49044 , Y10T29/49048
    • 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 &mgr;m to 2.0 &mgr;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 &mgr;m to 1.0 &mgr;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 &mgr;m to 1.0 &mgr;m. Accordingly, full notching of the notching layer can be achieved by milling a small-corner in a range of 0.10 &mgr;m by 0.10 &mgr;m to 1.0 &mgr;m by 1.0 &mgr;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.
    • 在组合磁头的制造中，通过在第一极片层上构造具有切口层的第一极靴来减小头部写入元件的第一极靴的切割的铣削时间，该切口层具有第一和第二角部相邻 第二极尖的第一和第二侧壁。 第一极片层具有宽的横向宽度，并且开槽层具有窄的横向宽度。 切口层的宽度比第二极尖的目标轨道宽度优选为0.2μm〜2.0μm。 通过这种布置，切口层具有将0.10mum调整到1.0μm的第一和第二侧壁。 分别横跨第二极尖的第一和第二侧壁。 切口层的厚度优选为0.1μm〜1.0μm。 因此，如ABS视图所示，通过将0.10μm至0.10μm的范围内的小角度铣削1.0μm，可以实现切口层的完全切口。 间隙层形成在切口层上，随后在间隙层上形成第二极尖。 然后采用一定角度铣削通过间隙层并切开切口层。 与铣削现有技术的第一极片的大侧向宽度相比，以实现开槽。 铣削开槽层的小角度需要非常短的铣削时间。 这导致较少的第二极尖的消耗，使得可以实现对最终轨道宽度的更好的控制。 此外，由于第二极尖的顶部的消耗较少，所以用于构造第二极尖的光致抗蚀剂的纵横比减小，从而增强第二极尖的线宽。 此外，在研磨循环之后，清除较少的再沉积材料。 所有这些因素减少了处理时间并提高了生产量。
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Espacenet 法律信息 同族专利 专利引用
    • 7. 发明授权
      US06477008B1 Magnetic recording transducer with electronic shield 失效
    • Magnetic recording transducer with electronic shield
    • 带电子屏蔽的磁记录传感器
    • US06477008B1
    • 2002-11-05
    • US09317668
    • 1999-05-24
    • Thomas Young Chang , Shanlin Duan , Terence Tin-Lok Lam , Wai C. Leung
    • Thomas Young Chang , Shanlin Duan , Terence Tin-Lok Lam , Wai C. Leung
    • G11B5115
    • G11B5/3103 , G11B5/11 , G11B5/3143 , G11B5/3967
    • The present invention is a read/write head for writing information to magnetic media and reading information from magnetic media. It includes a write head element for writing information onto magnetic media, a read head element for reading information from the magnetic media, and an electromagnetic field shield element that is disposed between the write head element and the read head element. The shield functions to shield the read head from electromagnetic field energy created by the write head element. An enhanced second embodiment includes an electrical circuit element that is disposed proximate the read head element that functions to generate an electromagnetic field at the read head element that is generally oppositely directed to the electromagnetic field generated by the write head element to reduce the total electromagnetic field that the read head element is exposed to during a writing operation. The method for operating the read/write head in a hard disk drive, includes the steps of writing data onto a hard disk and reading data from the hard disk simultaneously with the data writing. This is accomplished by shielding the read head from the electromagnetic field energy generated during the data writing by utilizing the electromagnetic field shield element that is disposed between the write head element and the said read head element. The electrical circuit element of the second embodiment is preferably interconnected with the write head electric circuit.
    • 本发明是一种用于向磁性介质写入信息并从磁性介质读取信息的读/写头。 它包括用于将信息写入磁介质的写入头元件，用于从磁性介质读取信息的读取头元件以及设置在写入头元件和读取头元件之间的电磁场屏蔽元件。 屏蔽功能用于屏蔽读取头与写入头元件产生的电磁场能量。 增强的第二实施例包括设置在读头元件附近的电路元件，其功能是在读头元件处产生电磁场，该磁头元件通常与写头元件产生的电磁场相反地指向以减小总电磁场 读写头元件在写操作期间被暴露。 用于在硬盘驱动器中操作读/写头的方法包括以下步骤：将数据写入硬盘并且与数据写入同时从硬盘读取数据。 这是通过利用设置在写头元件和所述读头元件之间的电磁场屏蔽元件来屏蔽读头从数据写入期间产生的电磁场能量。 第二实施例的电路元件优选地与写入头电路互连。
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Espacenet 法律信息 同族专利 专利引用
    • 8. 发明授权
      US06330122B1 Magnetic tester for disk surface scan 失效
    • Magnetic tester for disk surface scan
    • 用于磁盘表面扫描的磁性测试仪
    • US06330122B1
    • 2001-12-11
    • US09317664
    • 1999-05-24
    • Thomas Young Chang , Shanlin Duan , Terence Tin-Lok Lam , Wai C. Leung
    • Thomas Young Chang , Shanlin Duan , Terence Tin-Lok Lam , Wai C. Leung
    • G11B2736
    • G11B27/36 , G01R33/1207 , G11B5/012 , G11B5/4886 , G11B20/1816 , G11B2005/001 , G11B2220/20
    • The hard disk testing and certifying device of the present invention includes a spin stand to rotate a disk to be tested. A single read/write head, including both a write head and a read head is mounted upon an armature which movably supports the read/write head. The device includes a computerized control system and signal processing system that provides write signals to the write head and receives and processes read head signals from the read head. In the preferred embodiment the read/write head simultaneously provides write signals to the disk and receives read signals from the disk. Preferably, the read/write head functions continually and the certification testing is conducted utilizing a spiral path. In the preferred read/write head the read head is disposed behind the write head and an electromagnetic field shield is disposed between them to reduce electromagnetic field interference between the write head and the read head during simultaneous operation. The read/write head may also include an electromagnetic field interference element to further reduce signal interference at the read head.
    • 本发明的硬盘测试和认证装置包括旋转待测试盘的旋转架。 包括写入头和读取头的单个读/写头安装在可移动地支撑读/写头的电枢上。 该装置包括计算机控制系统和信号处理系统，其向写入头提供写入信号，并从读取头接收并处理读取头信号。 在优选实施例中，读/写头同时向盘提供写信号并从盘接收读信号。 优选地，读/写头连续工作，并且使用螺旋路径进行认证测试。 在优选的读/写头中，读头设置在写头后面，电磁场屏蔽设置在它们之间，以在同时操作期间减小写头和读头之间的电磁场干扰。 读/写头还可以包括电磁场干扰元件，以进一步减少读头的信号干扰。
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Espacenet 法律信息 同族专利 专利引用
    • 9. 发明授权
      US06278591B1 Inverted merged MR head having plated notched first pole tip and self-aligned second pole tip 失效
    • Inverted merged MR head having plated notched first pole tip and self-aligned second pole tip
    • 具有电镀缺口的第一极尖和自对准的第二极尖的反向合并MR头
    • US06278591B1
    • 2001-08-21
    • US09592089
    • 2000-06-12
    • Thomas Young Chang , Jyh-Shuey Jerry Lo
    • Thomas Young Chang , Jyh-Shuey Jerry Lo
    • G11B531
    • G11B5/3116 , G11B5/232 , G11B5/3163 , G11B5/3967 , Y10T29/49032 , Y10T29/49044 , Y10T29/49046
    • A method makes an inverted merged MR head with a second pole tip which is self-aligned with a top first pole tip. After forming a bottom first pole tip layer, a top first pole tip is frame plated thereon with a width that defines a track width of the merged MR head. A photoresist layer, which is employed in the frame plating of the top first pole tip, is then soft baked which causes a photoresist opening above the top first pole tip to have sloping side edges which form a recess. An electrically-conductive sacrificial layer, such as copper, is then plated into the recess on top of the top first pole tip and the photoresist is removed. A forming layer, such as alumina, is then deposited and lapped so that the forming layer and the sacrificial layer have top surfaces that are flush with respect to one another. The sacrificial layer is then removed by an etchant that will not attack the materials of the pole tips and the forming layer. The forming layer now has a recess with sloping edges into which a gap layer, a seedlayer and a second pole tip layer are deposited. By this method the second pole tip is self-aligned with the top first pole tip with the second pole tip having a bottom that is substantially the same width as the top of the top first pole tip.
    • 一种方法使得具有与顶部第一极尖自身对准的第二极尖的反向合并MR头。 在形成底部第一极尖端层之后，顶部第一极尖端在其上被框架镀覆，其宽度限定了合并的MR头的轨道宽度。 用于顶部第一极尖端的框架电镀中的光致抗蚀剂层然后被软烘烤，这使得顶部第一极尖端上方的光致抗蚀剂开口具有形成凹部的倾斜侧边缘。 然后将诸如铜的导电牺牲层电镀到顶部第一极尖顶部的凹部中，并且去除光致抗蚀剂。 然后沉积和研磨诸如氧化铝的成形层，使得成形层和牺牲层具有相对于彼此齐平的顶表面。 然后通过不会攻击极尖和成形层的材料的蚀刻剂去除牺牲层。 成形层现在具有倾斜边缘的凹部，间隙层，籽晶层和第二极尖端层沉积到该凹部中。 通过该方法，第二极尖与顶部第一极尖自对准，第二极尖具有与顶部第一极尖的顶部基本相同的宽度的底部。
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Espacenet 法律信息 同族专利 专利引用
    • 10. 发明授权
      US06029339A Method of making write head with recessed stitched yoke on a planar portion of an insulation layer defining zero throat height 失效
    • Method of making write head with recessed stitched yoke on a planar portion of an insulation layer defining zero throat height
    • 在限定零喉部高度的绝缘层的平面部分上制作具有凹陷缝合轭的写头的方法
    • US06029339A
    • 2000-02-29
    • US34427
    • 1998-03-04
    • Thomas Young Chang , Mohamad Towfik Krounbi , Edward Hinpong Lee , Douglas Johnson Werner
    • Thomas Young Chang , Mohamad Towfik Krounbi , Edward Hinpong Lee , Douglas Johnson Werner
    • G11B5/23 , G11B5/31 , G11B5/39 , G11B5/60 , G11B5/41
    • G11B5/6005 , G11B5/23 , G11B5/3109 , G11B5/3116 , G11B5/3163 , G11B5/39 , Y10T29/49044 , Y10T29/49046
    • An inductive write head has a pole tip region between an air bearing surface (ABS) and a flare point, and a yoke region located between the flare point and a back gap. The write head includes first and second pole piece layers, wherein the second pole piece layer has first and second components. The first component extends from an ABS end, which is located at the ABS, to a recessed end which is located in the yoke region. The second component extends from a recessed end, which is spaced from the ABS, to the back gap. The second component interfaces with the first component in a stitched region so that the first component defines a pole tip in the pole tip region and the second component defines a yoke in the yoke region. A first insulation layer extends from a recessed end, which is spaced from the ABS, into the yoke region. The recessed end of the first insulation layer defines a zero throat height. The first component is sandwiched between the first insulation layer and the second component. The pole tip of the first component can be formed with well-defined side walls during a photoresist step since a flared portion of the second pole piece is located in a planar region of the first insulation layer. With this arrangement, reflective notching into the second pole piece region is avoided. Secondly, a large pedestal formed by the second pole piece provides a large region to stitch the yoke. Due to the large real estate available to stitch the yoke, its forward placement can be recessed from the ABS.
    • 电感式写入头具有在空气轴承表面（ABS）和扩口点之间的极尖区域，以及位于火炬点和后隙之间的磁轭区域。 写头包括第一和第二极片层，其中第二极片层具有第一和第二部件。 第一部件从位于ABS处的ABS端延伸到位于轭区域中的凹入端。 第二部件从与ABS隔开的凹入端延伸到后隙。 第二部件与缝合区域中的第一部件接合，使得第一部件在极尖部区域中限定极尖，并且第二部件在轭部区域中限定轭。 第一绝缘层从与ABS隔开的凹入端延伸到轭区域中。 第一绝缘层的凹入端限定零喉部高度。 第一部件被夹在第一绝缘层和第二部件之间。 第一部件的极尖可以在光致抗蚀剂步骤期间由良好限定的侧壁形成，因为第二极靴的扩口部分位于第一绝缘层的平面区域中。 利用这种布置，避免了进入第二极片区域的反射缝隙。 其次，由第二极靴形成的大的基座提供大的区域来缝合轭。 由于可用于拼接轭的大型房地产，它的前置位可以从ABS凹进。
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