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31. 发明授权

US06324036B1 Combination inductive write head and magnetoresistive (MR) read head with improved topography 有权
标题翻译：组合感应写磁头和磁阻（MR）读头，具有改进的形貌
公开(公告)号：US06324036B1
公开(公告)日：2001-11-27
申请号：US09320480
申请日：1999-05-26
申请人： Frederick Hayes Dill, Jr. , Robert E. Fontana, Jr. , Eric James Lee
发明人： Frederick Hayes Dill, Jr. , Robert E. Fontana, Jr. , Eric James Lee
IPC分类号： G11B5147
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3116 , G11B5/3163 , G11B5/3967 , G11B2005/3996
摘要： An apparatus and method of making is disclosed for a combination read/write head having improved topography. The disclosed read/write head combines a magnetoresistive (MR) read head with an inductive magnetic write head. The head is planarized at a second shield layer with a planarization layer such that pads and leads connecting the pads to the MR sensor and coil are on a planar surface of the planaritzation layer. This planarization layer allows first and second shield layers to be optimized for the MR sensor to be used and also separates the pads and leads from the substrate. The combination head has first and second shield layers formed on a substrate, the shield layers being separated by a read gap. A magnetoresistive (MR) sensor and MR leads are located in the read gap. The planarization layer is then formed on the substrate, surrounding the first and second shield layers creating a planar surface that is coplanar with a top surface of the second shield layer. A write gap layer is fabricated along with a pole piece. The pole piece being separated by the write gap layer at the ABS and connected to the second shield layer at a back gap that is recessed in the head from the ABS. An insulation layer and coil layer embedded in the insulation layer with the insulation layer and the coil layer being located between the second shield layer and the pole piece. Pads and leads are formed on the planarization layer, with the leads electrically connected to the MR sensor and the coil.
摘要翻译：公开了一种具有改进的形貌的组合读/写头的制造装置和方法。所公开的读/写头将磁阻（MR）读头与感应磁写头相结合。头部在具有平坦化层的第二屏蔽层处被平坦化，使得将焊盘连接到MR传感器和线圈的焊盘和引线位于平面化层的平面表面上。该平坦化层允许为要使用的MR传感器优化第一和第二屏蔽层，并且还将衬垫和引线与衬底分离。组合头具有形成在基板上的第一和第二屏蔽层，屏蔽层被读取间隙分开。磁阻（MR）传感器和MR引线位于读取间隙中。然后在衬底上形成平坦化层，围绕第一和第二屏蔽层，形成与第二屏蔽层的顶表面共平面的平坦表面。写间隙层与极片一起制造。该极片在ABS处由写入间隙层分开，并且在与ABS相对的头部凹陷的后部间隙处连接到第二屏蔽层。绝缘层和线圈层嵌入绝缘层中，绝缘层和线圈层位于第二屏蔽层和极片之间。在平坦化层上形成垫和引线，引线电连接到MR传感器和线圈。

32. 发明授权

US5561368A Bridge circuit magnetic field sensor having spin valve magnetoresistive elements formed on common substrate 失效
标题翻译：桥式电路磁场传感器具有形成在公共基板上的自旋阀磁阻元件
公开(公告)号：US5561368A
公开(公告)日：1996-10-01
申请号：US334659
申请日：1994-11-04
申请人： Moris M. Dovek , Robert E. Fontana, Jr. , Virgil S. Speriosu , Jaquelin K. Spong
发明人： Moris M. Dovek , Robert E. Fontana, Jr. , Virgil S. Speriosu , Jaquelin K. Spong
IPC分类号： G01R33/09 , H01L43/08 , G01R33/02
CPC分类号： B82Y25/00 , G01R33/093
摘要： A magnetic field sensor uses four individual magnetoresistive spin valve elements electrically connected in a bridge circuit. The spin valve elements are lithographically formed on the same substrate with their free layers having their magnetization axes parallel to one another. An electrically conductive fixing layer is formed on the substrate but is insulated from the spin valve elements. The application of current through the fixing conductor during fabrication of the field sensor fixes the direction of magnetization of two of the pinned layers to be antiparallel to the direction of magnetization of the other two pinned layers. The bridge circuit output voltage is responsive to an external magnetic field in the plane of the sensor. By appropriate fixing of the direction of magnetization of the pinned layers during sensor fabrication, and appropriate connection to the input and output leads, the bridge circuit output voltage is a measure of either the magnetic field or field gradient. The fixing conductor, or a separate current strap formed on the substrate, can be used to pass an unknown current over the sensor, in which case the bridge circuit output voltage is a measure of the unknown current.
摘要翻译：磁场传感器使用在桥式电路中电连接的四个单独的磁阻自旋阀元件。自旋阀元件光刻地形成在相同的基板上，其自由层的磁化轴线彼此平行。在基板上形成导电固定层，但与自旋阀元件绝缘。在场传感器的制造期间通过固定导体的电流的施加将两个被钉扎层的磁化方向固定成与其他两个钉扎层的磁化方向反平行。桥接电路输出电压响应于传感器平面内的外部磁场。通过在传感器制造期间适当地固定被钉扎层的磁化方向，以及适当地连接到输入和输出引线，桥接电路输出电压是磁场或场梯度的量度。可以使用固定导体或形成在基板上的单独的电流带将传感器上的未知电流传递，在这种情况下桥接电路输出电压是未知电流的量度。

33. 发明授权

US4156935A Block replicate magnetic bubble memory circuit for high speed data readout 失效
标题翻译：用于高速数据读取的块复制磁性气泡存储电路
公开(公告)号：US4156935A
公开(公告)日：1979-05-29
申请号：US795475
申请日：1977-05-10
申请人： David C. Bullock , Robert E. Fontana, Jr. , James T. Carlo , Shalendra K. Singh
发明人： David C. Bullock , Robert E. Fontana, Jr. , James T. Carlo , Shalendra K. Singh
IPC分类号： G11C11/14 , G11C19/08
CPC分类号： G11C19/0858 , G11C19/0866 , G11C19/0883
摘要： Magnetic bubble domain memory circuit in which magnetizable overlay patterns of magnetically soft material, e.g. permalloy, are provided as bubble propagation elements on a bubble-supporting magnetic layer to define major and minor bubble propagation paths. The major bubble propagation paths provide interchangeable bubble input and output sections, and the minor bubble propagation paths are in the form of closed storage loops providing a bubble storage section comprising first and second pairs of blocks. Bubble generators are provided for each of the blocks included in the first and second pairs thereof comprising the bubble storage section, along with first and second detectors and input/output tracks of bubble propagation elements associated with the respective pairs of blocks of storage loops. Swap transfer/replicate gates are disposed between the input/output tracks and each of the storage loops included in the blocks of storage loops. These gates are alternately operable in a swap transfer mode and a replicate mode so as to simultaneously transfer data as represented by magnetic bubbles and voids from the tracks to the storage loops and from the storage loops to the tracks when operated in a swap transfer mode, and to split respective magnetic bubbles incident thereon in a replicate mode to form a duplicate magnetic bubble in addition to the original magnetic bubble so as to preserve the data intact in the minor storage loop while delivering a bubble to a detector for readout. The first and second bubble detectors are 180.degree. out of phase with respect to each other and are operable during respective halfcycles of a bubble propagation cycle to sense the presence or absence of magnetic bubbles. Thus, respective data bits from different blocks are alternately sensed by the first and second bubble detectors in each bubble propagation cycle to provide a data readout rate twice the field rate.
摘要翻译：磁性气泡域记忆电路，其中磁性软材料的可磁化覆盖图案，例如，坡莫合金作为气泡传播元件提供在气泡支撑磁性层上以限定主要和次要的气泡传播路径。主要的气泡传播路径提供了可互换的气泡输入和输出部分，并且次要的气泡传播路径是封闭存储回路的形式，提供包括第一和第二对块的气泡存储部分。为包括在包括气泡存储部分的第一和第二对中的每个块以及与相应的存储循环块对相关联的气泡传播元件的第一和第二检测器和输入/输出轨道提供气泡发生器。交换传输/复制门被布置在输入/输出轨道和包含在存储循环块中的每个存储回路之间。这些栅极交替地可操作在交换传输模式和复制模式中，以便当以交换传输模式操作时，将由磁性气泡和空隙表示的数据从轨道同时传送到存储环路和从存储环路到轨道，并且以复制模式分离入射在其上的各个磁性气泡，以便除了原始磁性气泡之外还形成一个重复的磁性气泡，从而将数据保存在次要存储环路中，同时将气泡传送到检测器进行读出。第一和第二气泡检测器相对于彼此为180度异相，并且可在气泡传播周期的相应半周期期间操作以感测磁性气泡的存在或不存在。因此，在每个气泡传播周期中，来自不同块的相应数据位由第一和第二气泡检测器交替地感测，以提供两倍于场速率的数据读出速率。

34. 发明授权

US08717136B2 Inductor with laminated yoke 有权
标题翻译：带有叠片轭的电感器
公开(公告)号：US08717136B2
公开(公告)日：2014-05-06
申请号：US13347571
申请日：2012-01-10
申请人： Robert E. Fontana, Jr. , William J. Gallagher , Philipp Herget , Eugene J. O'Sullivan , Lubomyr T. Romankiw , Naigang Wang , Bucknell C. Webb
发明人： Robert E. Fontana, Jr. , William J. Gallagher , Philipp Herget , Eugene J. O'Sullivan , Lubomyr T. Romankiw , Naigang Wang , Bucknell C. Webb
IPC分类号： H01F27/30 , H01F5/00 , H01F27/28 , H01F27/24
CPC分类号： H01F41/042 , H01F27/2804 , H01F41/046 , H01F2017/0066 , H01F2027/348
摘要： A thin film inductor having yokes, one or more of which is laminated, and one or more conductors passing between the yokes. The laminated yoke or yokes help reduce eddy currents and/or hysteresis losses.
摘要翻译：一种薄膜电感器，其具有轭，其中一个或多个层叠，以及一个或多个通过轭之间的导体。叠片磁轭或磁轭有助于减少涡流和/或磁滞损耗。

35. 发明授权

US08335056B2 CPP sensors with hard bias structures that shunt sense current towards a shield 有权
标题翻译：具有硬偏压结构的CPP传感器将屏蔽层的感应电流分流
公开(公告)号：US08335056B2
公开(公告)日：2012-12-18
申请号：US11957466
申请日：2007-12-16
申请人： Hamid Balamane , Jeffrey R. Childress , Robert E. Fontana, Jr. , Jordan A. Katine , Neil Smith
发明人： Hamid Balamane , Jeffrey R. Childress , Robert E. Fontana, Jr. , Jordan A. Katine , Neil Smith
IPC分类号： G11B5/39
CPC分类号： G11B5/3932 , B82Y10/00 , B82Y25/00 , G11B5/3912 , G11B2005/3996
摘要： Read sensors and associated methods of fabrication are disclosed. A read sensor as disclosed herein includes a first shield, a sensor stack including an antiparallel (AP) free layer, and insulating material disposed on the sensor stack. A aperture is formed through the insulating material above the sensor stack so that a subsequently deposited second shield is electrically coupled to the sensor stack through the aperture. The width of the aperture controls the current density that is injected into the top of the sensor stack. Also, hard bias structures may be formed to be electrically coupled to the sensor stack. The electrical coupling of the sensor stack and the hard bias structures allows current to laterally spread out as it passes through the sensor stack, and hence, provides a non-uniform current density.
摘要翻译：公开了传感器和相关的制造方法。本文公开的读取传感器包括第一屏蔽层，包括反平行（AP）自由层的传感器堆叠以及设置在传感器堆叠上的绝缘材料。通过传感器堆叠上方的绝缘材料形成孔，使得随后沉积的第二屏蔽件通过孔电耦合到传感器堆叠。光圈的宽度控制注入到传感器叠层顶部的电流密度。此外，可以形成硬偏置结构以电耦合到传感器堆叠。传感器堆叠和硬偏置结构的电耦合允许电流在其通过传感器堆叠时横向展开，因此提供不均匀的电流密度。

36. 发明授权

US08035988B2 Method and device for repeatable shorting and unshorting of micro-electrical circuits 有权
标题翻译：用于微电路重复短路和不启动的方法和装置
公开(公告)号：US08035988B2
公开(公告)日：2011-10-11
申请号：US11763962
申请日：2007-06-15
申请人： Robert E. Fontana, Jr. , Sergey Kiselev , Edward Hin Pong Lee , Kenneth Donald Mackay , Surya Narayan Pattanaik , Chie Ching Poon
发明人： Robert E. Fontana, Jr. , Sergey Kiselev , Edward Hin Pong Lee , Kenneth Donald Mackay , Surya Narayan Pattanaik , Chie Ching Poon
IPC分类号： H05K9/00
CPC分类号： G11B5/40 , G11B5/4853
摘要： The present invention provides methods and systems for repeatably creating and severing a short circuit to protect an electronic component from ESD. A short circuit may be formed between read sensor pads of a read sensor by depositing a shorting material on a magnetic head using a Laser Induced Forward Transfer (LIFT) process. The short circuit may be unshorted using a laser scan configured to sever the shorting material. In one embodiment, a shorting station may be provided to prevent spreading of the shorting material to undesired areas of the electronic component.
摘要翻译：本发明提供了用于重复地创建和切断短路以保护电子部件免受ESD的方法和系统。通过使用激光诱导正转（LIFT）工艺将短路材料沉积在磁头上，可以在读取传感器的读取传感器焊盘之间形成短路。可以使用配置为切断短路材料的激光扫描来对该短路进行未调整。在一个实施例中，可以提供短路站以防止短路材料扩散到电子部件的不期望的区域。

37. 发明授权

US07698807B2 Method of manufacturing a magnetic sensor by multiple depositions of varying geometry 有权
标题翻译：通过不同几何形状的多次沉积制造磁性传感器的方法
公开(公告)号：US07698807B2
公开(公告)日：2010-04-20
申请号：US11337020
申请日：2006-01-20
申请人： Jeffrey Robinson Childress , Robert E. Fontana, Jr. , Jeffrey S. Lille
发明人： Jeffrey Robinson Childress , Robert E. Fontana, Jr. , Jeffrey S. Lille
IPC分类号： G11B5/187
CPC分类号： G11B5/398 , B82Y25/00 , G01R33/093 , G11B5/3932 , H01L43/08 , H01L43/12 , Y10T29/49041 , Y10T29/49044 , Y10T29/49048
摘要： Formation of the magnetic sensor layers of a magnetic sensor are separated into at least two depositions to reduce the dimension of the sensor. The free layer portion of the sensor is deposited at a different process step than the pinned layer portion. The top of the free layer stack can be a tunnel barrier, the free layer, or part of the free layer. The free layer stack also may contain an in-stack bias layer. The longitudinal bias layer may be patterned in a separate processing step, which allows the stack containing the free layer to be effectively thinner and allow smaller track width dimensions.
摘要翻译：将磁传感器的磁传感器层的形成分成至少两个沉积物以减小传感器的尺寸。传感器的自由层部分以与被钉扎层部分不同的工艺步骤沉积。自由层堆叠的顶部可以是隧道势垒，自由层或自由层的一部分。自由层堆叠还可以包含堆叠内偏压层。纵向偏置层可以在单独的处理步骤中进行图案化，其允许包含自由层的堆叠被有效地更薄并且允许更小的轨道宽度尺寸。

38. 发明授权

US07639459B2 Three terminal magnetic sensor having an in-stack longitudinal biasing layer structure 失效
标题翻译：具有叠层纵向偏置层结构的三端磁传感器
公开(公告)号：US07639459B2
公开(公告)日：2009-12-29
申请号：US11032598
申请日：2005-01-10
申请人： Jeffrey R. Childress , Robert E. Fontana, Jr. , Jeffrey S. Lille
发明人： Jeffrey R. Childress , Robert E. Fontana, Jr. , Jeffrey S. Lille
IPC分类号： G11B5/33
CPC分类号： B82Y25/00 , G01R33/093 , G11B5/3903 , G11B5/3932 , H01L29/66984 , H01L43/08
摘要： In one illustrative example, a three terminal magnetic sensor (TTM) suitable for use in a magnetic head has a sensor stack structure which includes a base region, a collector region, and an emitter region. A first barrier layer separates the emitter region from the base region, and a second barrier layer separates the collector region from the base region. A plurality of terminals of the TTM include a base lead coupled to the base region, a collector lead coupled to the collector region, and an emitter lead coupled to the emitter region. Preferably, the base region consists of a free layer structure so as to have a relatively small thickness. A pinned layer structure is made part of the emitter region. An in-stack longitudinal biasing layer (LBL) structure is formed in stack with the sensor stack structure and has a magnetic moment that is parallel to a sensing plane of the TTM for magnetically biasing the free layer structure. The in-stack LBL structure is made part of the collector region which also includes a layer of semiconductor material. In one variation, the emitter region has the in-stack LBL structure and the collector region has the pinned layer structure. The TTM may comprise a spin valve transistor (SVT), a magnetic tunnel transistor (MTT), or a double junction structure.
摘要翻译：在一个说明性示例中，适用于磁头的三端磁传感器（TTM）具有包括基极区域，集电极区域和发射极区域的传感器堆叠结构。第一阻挡层将发射极区域与基极区域分开，并且第二阻挡层将集电极区域与基极区域分离。 TTM的多个端子包括耦合到基极区域的基极引线，耦合到集电极区域的集电极引线和耦合到发射极区域的发射极引线。优选地，基区由自由层结构组成，以便具有相对较小的厚度。被钉扎层结构是发射极区域的一部分。堆叠纵向偏置层（LBL）结构与传感器堆叠结构堆叠形成，并且具有平行于TTM的感测平面的磁矩，用于磁偏置自由层结构。叠层LBL结构是集成区域的一部分，其还包括半导体材料层。在一个变型中，发射极区域具有叠层LBL结构，并且集电极区域具有钉扎层结构。 TTM可以包括自旋阀晶体管（SVT），磁隧道晶体管（MTT）或双结结构。

39. 发明授权

US07635599B2 Three terminal magnetic sensing devices having base lead layers in-plane with collector substrate materials and methods of making the same 失效
标题翻译：具有与集电体基板材料在一起的基极引线层的三端子磁感测装置及其制造方法
公开(公告)号：US07635599B2
公开(公告)日：2009-12-22
申请号：US11239178
申请日：2005-09-29
申请人： Robert E. Fontana, Jr. , Jui-Lung Li , Jeffrey S. Lille , Sergio Nicoletti
发明人： Robert E. Fontana, Jr. , Jui-Lung Li , Jeffrey S. Lille , Sergio Nicoletti
IPC分类号： H01L21/00
CPC分类号： G11B5/398 , B82Y10/00 , B82Y25/00 , G01R33/093 , G11B5/3903 , H01L29/66984
摘要： Three terminal magnetic sensing devices (TTMs) having base lead layers in-plane with collector substrate materials, and methods of making the same, are disclosed. In one illustrative example, a collector substrate having an elevated region and a recessed region adjacent the elevated region is provided. An insulator layer is formed in full-film over the collector substrate, and a base lead layer is formed in full-film over the insulator layer and in-plane with semiconductor materials of the elevated region. The insulator materials and the base lead materials that are formed over the elevated region are removed. A sensor stack structure having an emitter region and a base region is then formed over the elevated region such that part of the base region is formed over an end of the base lead layer. A base conductive via may be formed to contact base lead materials of the base lead layer at a suitable distance away from the sensor stack structure. Advantageously, the base conductive via formation may occur without causing damage to the sensor stack structure. Also, the base lead layer is formed in the recessed region of the collector substrate prior to the formation of the sensor stack structure such that the TTM may be entirely in-situ manufactured. Furthermore, the trackwidth of the TTM may be defined directly by the elevated region of the collector substrate. The TTM is suitable for incorporation into nanoscale devices which increase areal recording densities, therefore aiding the revolution in magnetic storage.
摘要翻译：公开了具有与集电器基板材料在一起的基极引线层的三端子磁感测装置（TTM）及其制造方法。在一个说明性示例中，提供了具有升高区域和与升高区域相邻的凹陷区域的收集器基板。在集电体基板上形成绝缘体层，并且在绝缘体层上形成基极引线层，并且与升高区域的半导体材料在同一平面内形成基极引线层。去除在升高区域上形成的绝缘体材料和基底引线材料。然后在升高的区域上形成具有发射极区域和基极区域的传感器堆叠结构，使得基极区域的一部分形成在基极引线层的一端上。可以形成基底导电通孔，以在离传感器堆叠结构适当的距离处接触基底引线层的基底引线材料。有利地，可以在不会对传感器堆叠结构造成损害的情况下发生基底导电通孔形成。此外，在形成传感器堆叠结构之前，基极引线层形成在集电体基板的凹陷区域中，使得TTM可以完全原位制造。此外，TTM的轨道宽度可以由收集器基板的升高区域直接定义。 TTM适合纳入纳米级器件，增加面积记录密度，从而有助于磁存储的革命。

40. 发明授权

US06999277B2 Magnetic head having thermally assisted write head with heater element, and protective sacrificial layer 失效
标题翻译：磁头具有加热元件的热辅助写头和保护牺牲层
公开(公告)号：US06999277B2
公开(公告)日：2006-02-14
申请号：US10631885
申请日：2003-07-30
申请人： Robert E. Fontana, Jr. , Jeffrey S. Lille
发明人： Robert E. Fontana, Jr. , Jeffrey S. Lille
IPC分类号： G11B5/147
CPC分类号： G11B5/127 , Y10T29/49032 , Y10T29/49082 , Y10T29/49083
摘要： A magnetic head including a media heating device. Following the fabrication of the heating device, a sacrificial layer of material is deposited to protect the heating device during subsequent process steps. Thereafter, write head components, such as write head induction coils and/or a P1 pole pedestal are fabricated above the heating device, and the sacrificial layer is substantially consumed in protecting the heating device during the aggressive etching and milling steps used to create those components. Further components, including a second magnetic pole are thereafter fabricated to complete the fabrication of the write head portion of the magnetic head. The sacrificial layer may be comprised of alumina, or a material such as NiFe that can act as a seed layer for a subsequent head components such as the P1 pole pedestal.
摘要翻译：包括介质加热装置的磁头。在加热装置的制造之后，沉积牺牲层材料以在随后的工艺步骤中保护加热装置。此后，在加热装置之上制造诸如写头感应线圈和/或P1极基座的写头部件，并且在用于产生这些部件的腐蚀性蚀刻和铣削步骤期间，牺牲层基本上被消耗以保护加热装置。此后，制造包括第二磁极的其它部件以完成磁头的写入头部的制造。牺牲层可以由氧化铝或诸如NiFe的材料组成，其可以用作后续头部部件如P1极基座的种子层。

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