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1. 发明授权

US06519118B2 Read head with read track width defining layer that planarizes the write gap layer of a write head 失效
公开(公告)号：US06519118B2
公开(公告)日：2003-02-11
申请号：US10094913
申请日：2002-03-11
申请人： Henry C. Chang , Cherngye Hwang , Robert Otto Schwenker
发明人： Henry C. Chang , Cherngye Hwang , Robert Otto Schwenker
IPC分类号： G11B5127
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/012 , G11B5/3116 , G11B5/3163 , G11B5/3903 , G11B5/3932 , G11B5/3967 , G11B2005/3996 , Y10T29/49025 , Y10T29/49032 , Y10T29/49041 , Y10T29/49044 , Y10T29/4905 , Y10T29/49052
摘要： A read track width defining layer is employed for defining first and second side edges of a read sensor. The read track width defining layer preferably remains in the head to planarize the read head at first and second hard bias and lead layers so as to overcome a problem of write gap curvature in an accompanying write head. The read track width defining layer is defined by a subtractive process about a bilayer photoresist layer. The subtractive process is selective to the read track width defining layer over a read sensor material layer therebelow. Ion milling is then employed for defining first and second side edges of a read sensor layer employing the read track width defining layer as a mask. First and second hard bias and lead layers are then deposited which make contiguous junctions with the first and second side edges of each of the read sensor and read track width defining layers. The photoresist is then removed and the remainder of the read head is completed.

2. 发明授权

US06434814B1 Method of manufacturing a magnetic head including a read head with read track width defining layer that planarizes the write gap layer of a write head 失效
标题翻译：一种制造磁头的方法，该磁头包括具有读磁道宽度限定层的读头，平面化写头的写间隙层
公开(公告)号：US06434814B1
公开(公告)日：2002-08-20
申请号：US09212724
申请日：1998-12-16
申请人： Henry C. Chang , Cherngye Hwang , Robert Otto Schwenker
发明人： Henry C. Chang , Cherngye Hwang , Robert Otto Schwenker
IPC分类号： G11B5127
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/012 , G11B5/3116 , G11B5/3163 , G11B5/3903 , G11B5/3932 , G11B5/3967 , G11B2005/3996 , Y10T29/49025 , Y10T29/49032 , Y10T29/49041 , Y10T29/49044 , Y10T29/4905 , Y10T29/49052
摘要： A method of making a magnetic head that has a read head with a track width includes the steps of depositing a read track width defining material layer on a read sensor material layer; forming a bi-layer photoresist mask on the read track width defining material layer that masks a read track width defining layer portion of the read track width defining material layer; removing by reactive ion etching (RIE) a portion of the read track width defining material layer not masked by the photoresist mask to form the read track width defining layer portion with exposed first and second side edges that are spaced apart a distance equal to the track width; removing by ion milling a first portion of the read sensor material layer not masked by the read track width defining layer portion to form a second portion of the read sensor material layer with exposed first and second side edges that have a width equal to the track width; depositing hard bias and lead material layers on the photoresist mask in contact with the first and second side edges of each of the second portion of the read sensor material layer and the read track width defining layer portion; and removing the photoresist mask, thereby lifting off a portion of the hard bias and lead material layers leaving first and second hard bias and lead layers connected to the first and second side edges of each of the second portion of the read sensor material layer and the read track width defining layer portion.
摘要翻译：制造具有带磁道宽度的读头的磁头的方法包括以下步骤：在读取的传感器材料层上沉积限定材料层的读取磁道宽度; 在所述读取磁道宽度限定材料层上形成双层光致抗蚀剂掩模，其掩蔽所述读取磁道宽度限定材料层的读取磁道宽度限定层部分; 通过反应离子蚀刻（RIE）去除未被光致抗蚀剂掩模掩蔽的读磁道宽度限定材料层的一部分，以形成具有暴露的第一和第二侧边缘，该第一和第二侧边缘间隔开等于轨道的距离宽度; 通过离子研磨读取的传感器材料层的第一部分而不被读取磁道宽度限定层部分掩蔽，以形成具有等于轨道宽度的宽度的暴露的第一和第二侧边缘的读取传感器材料层的第二部分 ; 在所述光致抗蚀剂掩模上沉积与所述读取传感器材料层的第二部分和所述读取磁道宽度限定层部分中的每一个的第一和第二侧边缘接触的硬偏压和引线材料层; 并且去除光致抗蚀剂掩模，从而剥离硬偏压和引线材料层的一部分，留下第一和第二硬偏压和引线层，其连接到读取传感器材料层的第二部分的第一和第二侧边缘，并且读取磁道宽度定义层部分。

3. 发明授权

US06297308B1 Chemical compositions 有权
标题翻译：化学成分
公开(公告)号：US06297308B1
公开(公告)日：2001-10-02
申请号：US09414411
申请日：1999-10-07
申请人： Chetan P. Jariwala , Henry C. Chang , David S. Hill
发明人： Chetan P. Jariwala , Henry C. Chang , David S. Hill
IPC分类号： C08J510
CPC分类号： C08J3/095 , C03C23/0085 , C08J3/093
摘要： Described are chemical compositions comprising a fluorinated solvent and a nonionic, poly-fluoroalkyl, hydroxy-substituted surfactant.
摘要翻译：描述了包含氟化溶剂和非离子，多氟烷基羟基取代的表面活性剂的化学组合物。

4. 发明授权

US5271802A Method for making a thin film magnetic head having a protective coating 失效
标题翻译：制造具有保护涂层的薄膜磁头的方法
公开(公告)号：US5271802A
公开(公告)日：1993-12-21
申请号：US987509
申请日：1992-12-07
申请人： Henry C. Chang , Mao-Min Chen , Cheng T. Horng , Robert O. Schwenker
发明人： Henry C. Chang , Mao-Min Chen , Cheng T. Horng , Robert O. Schwenker
IPC分类号： G11B5/31 , G11B5/60 , G11B5/71
CPC分类号： G11B5/3106 , G11B5/6005 , Y10T29/49052
摘要： A method for making a magnetic head slider having a protective coating on the rails thereof, the protective coating containing a thin adhesion layer, a thin layer of amorphous hydrogenated carbon, and a thin masking layer. The protective coating is deposited on the air bearing surface of the slider after the thin film magnetic heads are lapped to a chosen dimension, but before the pattern of rails is produced on the air bearing surface. The protective coating protects the magnetic head during the rail fabrication process and in usage in a magnetic recording system protects the magnetic head from wear and corrosion damage.
摘要翻译：一种用于制造在其轨道上具有保护涂层的磁头滑块的方法，所述保护涂层包含薄粘合层，非晶氢化碳薄层和薄掩蔽层。在将薄膜磁头研磨成选定的尺寸之后，但是在空气轴承表面上产生轨道图案之前，保护涂层沉积在滑块的空气支承表面上。保护涂层在轨道制造过程中保护磁头，并且在磁记录系统中使用可保护磁头免受磨损和腐蚀的损害。

5. 发明申请

US20110153305A1 Software extensions to a high level description language simulator to provide infrastructure for analog, mixed-signal, RF modeling and verification 有权
标题翻译：软件扩展到高级描述语言模拟器，为模拟，混合信号，RF建模和验证提供基础设施
公开(公告)号：US20110153305A1
公开(公告)日：2011-06-23
申请号：US12848990
申请日：2010-08-02
申请人： Henry C. Chang , Kenneth S. Kundert
发明人： Henry C. Chang , Kenneth S. Kundert
IPC分类号： G06F17/50
CPC分类号： G06F17/5036 , G06F17/5022
摘要： An extension to a simulator (801) that allows the user to specify real numbers, voltages, and currents (808) on ports of an electrical net is presented. The computer using the analog wire functionality routines (805), the routines for determining nets (804), the net manager (803), and the pin manager (802) resolves unspecified values on said electrical nets. The user may specify at least one value on said port and may specify whether said port is driven. The extension includes additional math functions (1901).
摘要翻译：提供了允许用户在电网端口上指定实数，电压和电流（808）的模拟器（801）的扩展。使用模拟线功能程序（805），用于确定网络的例程（804），网络管理器（803）和引脚管理器（802）的计算机解决所述电网上的未指定值。用户可以在所述端口上指定至少一个值，并且可以指定所述端口是否被驱动。该扩展包括额外的数学函数（1901）。

6. 发明授权

US06767477B2 Etching process to selectively remove copper plating seed layer 有权
标题翻译：蚀刻工艺选择性去除镀铜种子层
公开(公告)号：US06767477B2
公开(公告)日：2004-07-27
申请号：US10170106
申请日：2002-06-12
申请人： Xue Hua Wu , Wensen Li , Si-Tuan Lam , Henry C. Chang , Kochan Ju , Jei-Wei Chang
发明人： Xue Hua Wu , Wensen Li , Si-Tuan Lam , Henry C. Chang , Kochan Ju , Jei-Wei Chang
IPC分类号： C23F100
CPC分类号： F16B7/025 , C23F1/18 , G11B5/17 , G11B5/313 , G11B5/3163 , H05K1/056 , H05K3/067 , Y10T403/7069
摘要： Write head coils for magnetic disk systems are commonly formed through electroplating onto a seed layer in the presence of a photoresist mask. It is then necessary to remove the seed layer everywhere except under the coil itself. The present invention achieves this through etching in a solution of ammonium persulfate to which has been added the complexing agent 1,4,8,11 tetraazundecane. This suppresses the reduction of Cu++ to Cu, thereby increasing the dissolution rate of copper while decreasing that of nickel-iron. Two ways of implementing this are described—adding the complexing agent directly to the ammonium persulfate and introducing the 1,4,8,11 tetraazundecane through a dipping process that precedes conventional etching in the ammonium persulfate.
摘要翻译：用于磁盘系统的写头线圈通常在光刻胶掩模的存在下通过电镀到种子层上形成。因此，除了线圈本身以外，还需要除去种子层。本发明通过在已加入络合剂1,4,8,11四氮十烷的过硫酸铵溶液中进行蚀刻来实现。这抑制了Cu向Cu的还原，从而提高了铜的溶解速率，同时降低了镍铁的溶解速率。描述了实现这一点的两种方法 - 将络合剂直接加入到过硫酸铵中，并通过在过硫酸铵中常规蚀刻之前的浸渍方法引入1,4,8,11四氮杂十一烷。

7. 发明申请

US20110054875A1 Design Specifications-Driven Platform for Analog, Mixed-signal, and Radio Frequency Verification 有权
标题翻译：用于模拟，混合信号和射频验证的设计规范驱动平台
公开(公告)号：US20110054875A1
公开(公告)日：2011-03-03
申请号：US12872878
申请日：2010-08-31
申请人： Henry C. Chang , Kenneth S. Kundert
发明人： Henry C. Chang , Kenneth S. Kundert
IPC分类号： G06F17/50
CPC分类号： G06F17/5036
摘要： A design specifications-driven platform (100) for analog, mixed-signal and radio frequency verification with one embodiment comprising a client (160) and server (150) is presented. The server comprises an analog verification database (110), a code and document generator (1020), a design to specifications consistency checker (103), a symbol generator (104), a coverage analyzer (105), a server interface (106), a web server (111), and an analog verification server application (101). The client comprises a web browser (130), generated datasheets and reports (120), generated models, regression tests, netlists, connect modules, and symbols (121), generated simulation scripts (122), a client interface (124), design data (131), simulators (132), and a design data extractor (123).
摘要翻译：提出了一种用于模拟，混合信号和射频验证的设计规范驱动平台（100），其中包括客户机（160）和服务器（150）的一个实施例。服务器包括模拟验证数据库（110），代码和文档生成器（1020），设计规范一致性检查器（103），符号生成器（104），覆盖分析器（105），服务器接口（106），网络服务器（111）和模拟验证服务器应用（101）。客户端包括网络浏览器（130），生成的数据表和报告（120），生成的模型，回归测试，网表，连接模块和符号（121），生成的模拟脚本（122），客户端接口（124），设计数据（131），模拟器（132）和设计数据提取器（123）。

8. 发明授权

US06428719B1 Etching process to selectively remove copper plating seed layer 失效
标题翻译：蚀刻工艺选择性去除镀铜种子层
公开(公告)号：US06428719B1
公开(公告)日：2002-08-06
申请号：US09487454
申请日：2000-01-19
申请人： Xuehua Wu , Wensen Li , Si-Tuan Lam , Henry C. Chang , Kochan Ju , Jei-Wei Chang
发明人： Xuehua Wu , Wensen Li , Si-Tuan Lam , Henry C. Chang , Kochan Ju , Jei-Wei Chang
IPC分类号： C23F100
CPC分类号： F16B7/025 , C23F1/18 , G11B5/17 , G11B5/313 , G11B5/3163 , H05K1/056 , H05K3/067 , Y10T403/7069
摘要： Write head coils for magnetic disk systems are commonly formed through electroplating onto a seed layer in the presence of a photoresist mask. It is then necessary to remove the seed layer everywhere except under the coil itself. The present invention achieves this through etching in a solution of ammonium persulfate to which has been added the complexing agent 1,4,8,11 tetraazundecane. This suppresses the reduction of Cu++ to Cu, thereby increasing the dissolution rate of copper while decreasing that of nickel-iron. Two ways of implementing this are described—adding the complexing agent directly to the ammonium persulfate and introducing the 1,4,8,11 tetraazundecane through a dipping process that precedes conventional etching in the ammonium persulfate.
摘要翻译：用于磁盘系统的写头线圈通常在光致抗蚀剂掩模的存在下通过电镀到种子层上形成。因此，除了线圈本身以外，还需要除去种子层。本发明通过在已加入络合剂1,4,8,11四氮十烷的过硫酸铵溶液中进行蚀刻来实现。这抑制了Cu ++还原为Cu，从而提高了铜的溶解速度，同时降低了镍铁的溶解速度。描述了实现这一点的两种方法 - 将络合剂直接加入到过硫酸铵中，并通过在过硫酸铵中常规蚀刻之前的浸渍方法引入1,4,8,11四氮杂十一烷。

9. 发明授权

US08325188B1 Method and system for implementing a waveform viewer 有权
标题翻译：用于实现波形查看器的方法和系统
公开(公告)号：US08325188B1
公开(公告)日：2012-12-04
申请号：US11490838
申请日：2006-07-21
申请人： Joel R. Phillips , Sherry Solden , Henry C. Chang , Kenneth S. Kundert , Ted Vucurevich
发明人： Joel R. Phillips , Sherry Solden , Henry C. Chang , Kenneth S. Kundert , Ted Vucurevich
IPC分类号： G06T17/00
CPC分类号： G06T11/206 , G06T2210/36
摘要： Systems and methods for storing waveform data and outputting data to a waveform viewer are disclosed. A waveform is segmented into a plurality of segments, and data describing each segment is stored at several levels of resolution. When a user wishes to view a portion of the waveform, the appropriate segments of the waveform are identified, and the appropriate levels of resolution are selected. The data describing the appropriate segments at the appropriate levels of resolution are output to a waveform viewer. An index may be provided to aid in selection of the appropriate data. Various methods for compression of the data are also supported.
摘要翻译：公开了用于存储波形数据并将数据输出到波形观察器的系统和方法。将波形分割成多个段，并且描述每个段的数据以多个分辨率级别存储。当用户希望观看波形的一部分时，识别波形的适当段，并且选择适当的分辨率。将描述适当分辨率级别的段的数据输出到波形查看器。可以提供索引以帮助选择适当的数据。还支持用于压缩数据的各种方法。

10. 发明授权

US5175658A Thin film magnetic head having a protective coating and method for making same 失效
标题翻译：具有保护涂层的薄膜磁头及其制造方法
公开(公告)号：US5175658A
公开(公告)日：1992-12-29
申请号：US634834
申请日：1990-12-27
申请人： Henry C. Chang , Mao-Min Chen , Cheng T. Horng , Robert O. Schwenker
发明人： Henry C. Chang , Mao-Min Chen , Cheng T. Horng , Robert O. Schwenker
IPC分类号： G11B5/187 , G11B5/31 , G11B5/60 , G11B21/21
CPC分类号： G11B5/6005 , G11B5/3106
摘要： A magnetic head slider having a protective coating on the rails thereof, the protective coating comprising a thin adhesion layer, a thin layer of amorphous hydrogenated carbon, and a thin masking layer. The protective coating is deposited on the air bearing surface of the slider after the thin film magnetic heads are lapped to a chosen dimension, but before the pattern of rails is produced on the air bearing surface. The protective coating protects the magnetic head during the rail fabrication process and in usage in a magnetic recording system protects the magnetic head from wear and corrosion damage.
摘要翻译：一种在其轨道上具有保护涂层的磁头滑块，保护涂层包括薄的粘合层，非晶氢化碳的薄层和薄的掩蔽层。在将薄膜磁头研磨成选定的尺寸之后，但是在空气轴承表面上产生轨道图案之前，保护涂层沉积在滑块的空气支承表面上。保护涂层在轨道制造过程中保护磁头，并且在磁记录系统中使用可保护磁头免受磨损和腐蚀的损害。

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