专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

31. 发明申请

US20080002290A1 Damascene coil design for a perpendicular magnetic recording head 有权
标题翻译：大马士革线圈设计用于垂直磁记录头
公开(公告)号：US20080002290A1
公开(公告)日：2008-01-03
申请号：US11478925
申请日：2006-06-30
申请人： Donald G. Allen , Edward Hin Pong Lee , Jennifer Ai-Ming Loo
发明人： Donald G. Allen , Edward Hin Pong Lee , Jennifer Ai-Ming Loo
IPC分类号： G11B5/17
CPC分类号： G11B5/1278 , G11B5/3123 , G11B5/3163
摘要： A magnetic recording head for use in perpendicular magnetic recording having a design that allows the write coil to be manufactured by a damascene process for increased coil pitch and reduced coil resistance. The magnetic write head includes a photoresist dam structure that allows a hard baked photoresist to be formed that does not extend to the air bearing surface (ABS). Since the photoresist dam prevents the hard baked photoresist from reaching the ABS, the a damascene process, in which the hard baked photoresist remains in the finished write head, can be used to produce the write head. The use of such a damascene process advantageously allows the space between the coil turns to be reduced, which maximizes the number of turns that can be used and also maximizes the number width to which the coil turns can be constructed, thereby minimizing the electrical resistance of the write coil.
摘要翻译：一种用于垂直磁记录的磁记录头，其具有允许通过镶嵌工艺制造写入线圈以增加线圈间距并减小线圈电阻的设计。磁写头包括光致抗蚀剂阻挡结构，其允许形成不延伸到空气轴承表面（ABS）的硬烘烤光致抗蚀剂。由于光致抗蚀剂防止了硬烘烤的光致抗蚀剂到达ABS，所以可以使用其中硬烘烤的光致抗蚀剂保留在完成的写入头中的镶嵌工艺来产生写入头。使用这种镶嵌工艺有利地减小了线圈匝之间的空间，这使得可以使用的匝数最大化，并且还使构造线圈匝数的数量最大化，从而最小化电阻写线圈。

32. 发明申请

US20080002289A1 Magnetic head having reduced induction coil electrical resistance and method for the fabrication thereof 失效
标题翻译：具有降低的感应线圈电阻的磁头及其制造方法
公开(公告)号：US20080002289A1
公开(公告)日：2008-01-03
申请号：US11477724
申请日：2006-06-28
申请人： Edward Hin Pong Lee , Vladimir Nikitin
发明人： Edward Hin Pong Lee , Vladimir Nikitin
IPC分类号： G11B5/17
CPC分类号： G11B5/17 , G11B5/3106 , G11B5/3123 , G11B5/3136 , G11B5/3163
摘要： A magnetic head including an induction coil having coil turns that are disposed between two magnetic poles of the magnetic head. The coil turns include a lower coil turn portion and an upper coil turn portion. In fabricating the induction coil, the lower coil turn portion is fabricated first, and the upper coil turn portion is fabricated directly upon the lower coil turn portion. The lower coil turn portion may be fabricated using damascene methods and the upper coil turn portion may be fabricated utilizing photolithographic methods. The lower coil turn portion and the upper coil turn portion of the induction coil turns are electrically connected, such that the thickness of the overall induction coil turns is increased. As a result, the electrical resistance of the coil turns is decreased, and heat generated in the coil is reduced.
摘要翻译：磁头包括具有设置在磁头的两个磁极之间的线圈的感应线圈。线圈匝包括下线圈匝部和上线圈匝部。在制造感应线圈时，首先制造下线圈匝部，并且将上线圈匝部直接制造在下匝匝部上。下部线圈匝部分可以使用镶嵌方法制造，并且上部线圈匝部分可以利用光刻方法制造。感应线圈匝的下线圈匝部和上线圈匝部电连接，使得整个感应线圈匝的厚度增加。结果，线圈匝的电阻降低，线圈中产生的热量减少。

33. 发明授权

US07292408B2 Bilayer coil insulation for magnetic write heads to minimize pole recession 有权
标题翻译：用于磁性写头的双层线圈绝缘，以尽量减少极限衰退
公开(公告)号：US07292408B2
公开(公告)日：2007-11-06
申请号：US10903341
申请日：2004-07-30
申请人： Andrew Chiu , Edward Hin Pong Lee , John Jaekoyun Yang , Michael Ming Hsiang Yang , Sue Siyang Zhang
发明人： Andrew Chiu , Edward Hin Pong Lee , John Jaekoyun Yang , Michael Ming Hsiang Yang , Sue Siyang Zhang
IPC分类号： G11B5/17
CPC分类号： G11B5/3163 , G11B5/17 , G11B5/1871
摘要： A magnetic write head for use in a data recording system having first and second magnetic pole, the first pole having a P1 pedestal. An electrically conductive coil passes through a space between the first and second poles for inducing a magnetic flux through the yoke formed by the first and second poles. A bi-layer insulation layer disposed between the poles includes a layer of photoresist for preventing voids and a layer of alumina formed thereover to provide a structural brace to prevent recession of the P1 pedestal during manufacturing operations such as soda blast.
摘要翻译：一种用于具有第一和第二磁极的数据记录系统的磁性写头，所述第一极具有P1基座。导电线圈通过第一和第二极之间的空间，用于引导通过由第一和第二极形成的轭的磁通。设置在极之间的双层绝缘层包括用于防止空隙的光致抗蚀剂层和形成在其上的氧化铝层，以提供结构支架，以防止诸如苏打爆炸的制造操作期间P1基座的凹陷。

34. 发明授权

US07249406B2 Method to detect magnetic pole defects in perpendicular recording heads at wafer level 失效
标题翻译：检测晶圆级垂直记录头磁极缺陷的方法
公开(公告)号：US07249406B2
公开(公告)日：2007-07-31
申请号：US11068334
申请日：2005-02-28
申请人： Wolfgang Goubau , Edward Hin Pong Lee
发明人： Wolfgang Goubau , Edward Hin Pong Lee
IPC分类号： G11B5/127 , H04R31/00
CPC分类号： G11B5/1278 , Y10T29/49004 , Y10T29/49021 , Y10T29/49036 , Y10T29/49037 , Y10T29/49043 , Y10T29/49044 , Y10T29/49073
摘要： The perpendicular magnetic head fabrication and testing method includes the additional fabrication of magnetic pole testing structures in the kerf area of the wafer substrate. Particularly, magnetic interconnect pieces are fabricated in the kerf area to magnetically connect an extending portion of the first magnetic pole with an extending portion of the second magnetic pole. As a result, when the perpendicular magnetic heads are fabricated at the wafer level, the first and second magnetic poles are interconnected through structures located in the kerf area. Thereafter, an ISAT magnetic pole test can be conducted by passing electrical current through the induction coil of the magnetic head, and magnetic flux will flow through the interconnected magnetic pole structure, thereby enabling the testing of the magnetic poles of the perpendicular magnetic head at the wafer level.
摘要翻译：垂直磁头制造和测试方法包括在晶片衬底的切口区域中额外制造磁极测试结构。特别地，磁性互连件制造在切口区域中，以将第一磁极的延伸部分与第二磁极的延伸部分磁性连接。结果，当在晶片级制造垂直磁头时，第一和第二磁极通过位于切口区域中的结构相互连接。此后，可以通过使电流通过磁头的感应线圈进行ISAT磁极测试，并且磁通将流过互连的磁极结构，从而能够在垂直磁头的磁极的测试晶圆级。

35. 发明授权

US07215511B2 Magnetic write head with gap termination less than half distance between pedestal and back gap 失效
标题翻译：磁头写入头带间隙终端小于基座和后间隙之间的一半距离
公开(公告)号：US07215511B2
公开(公告)日：2007-05-08
申请号：US10816062
申请日：2004-03-31
申请人： Hung-Chin Guthrie , Edward Hin Pong Lee , Aron Pentek
发明人： Hung-Chin Guthrie , Edward Hin Pong Lee , Aron Pentek
IPC分类号： G11B5/31 , G11B5/23 , G11B5/235
CPC分类号： G11B5/23 , G11B5/187 , G11B5/3116 , G11B5/313
摘要： A magnetic write head having a metal, non-magnetic write gap that extends only partially to the magnetic back gap, the remainder of the distance between the pole tip and the back gap being a magnetic material. The elimination of the seed layer reduces the amount of milling required to perform the desired notching needed to form a self aligned pedestal on the first pole and voids electrolytic corrosion of the back gap during plating.
摘要翻译：一种具有仅部分地延伸到磁背隙的金属非磁性写入间隙的磁性写头，磁极末端和后间隙之间的距离的其余部分是磁性材料。种子层的消除减少了在第一极上形成自对准基座所需的所需切口所需的铣削量，并避免了电镀期间后隙的电解腐蚀。

36. 发明授权

US07201637B2 Simultaneous planarization of pole piece and coil materials for write head applications 失效
标题翻译：用于写头应用的极片和线圈材料的同时平面化
公开(公告)号：US07201637B2
公开(公告)日：2007-04-10
申请号：US11313070
申请日：2005-12-20
申请人： Florence Eschbach , Eric James Lee , Peter Beverley Powell Phipps , Amanda Baer , Edward Hin Pong Lee , Francisco Martin
发明人： Florence Eschbach , Eric James Lee , Peter Beverley Powell Phipps , Amanda Baer , Edward Hin Pong Lee , Francisco Martin
IPC分类号： B24B1/00 , G11B5/127
CPC分类号： G11B5/1276 , B24B37/044 , C09G1/02 , Y10T29/49032 , Y10T29/49041 , Y10T29/49048
摘要： A method for simultaneously planarizing to relatively equal smoothness a thin film magnetic head hardbaked resist structure having relatively low surface energy and one or more additional thin film magnetic head structures containing other materials having comparatively higher surface energy, such as copper, hardbaked resist, alumina and NiFe. The method begins with preparation of a chemical mechanical polishing (CMP) slurry targeted at equaling the removal rate of the materials to be planarized. The CMP slurry includes a liquid vehicle, an abrasive, and a surfactant. The CMP slurry is applied to the surface of the structures to be planarized and the structures are simultaneously planarized using a CMP planarization technique.
摘要翻译：一种同时平面化相对平滑度的方法，具有相对较低表面能的薄膜磁头硬烘烤抗蚀剂结构和一种或多种另外的包含具有相对较高表面能的其它材料的附加薄膜磁头结构，例如铜，硬质烤漆抗蚀剂，氧化铝和 NiFe。该方法开始于制备化学机械抛光（CMP）浆料，其目的是等于要平坦化的材料的去除速率。 CMP浆料包括液体载体，研磨剂和表面活性剂。将CMP浆料施加到要平坦化的结构的表面上，并且使用CMP平坦化技术将结构同时平坦化。

37. 发明授权

US07127801B2 Method for shaping pole pieces of magnetic heads by chemical mechanical polishing 失效
标题翻译：通过化学机械抛光对磁头的极片进行成形的方法
公开(公告)号：US07127801B2
公开(公告)日：2006-10-31
申请号：US11090087
申请日：2005-03-24
申请人： Ashok Lahiri , Edward Hin Pong Lee , Eric James Lee , Hong Xu
发明人： Ashok Lahiri , Edward Hin Pong Lee , Eric James Lee , Hong Xu
IPC分类号： G11B5/127 , H04R31/00
CPC分类号： G11B5/313 , G11B5/012 , G11B5/3116 , Y10T29/49032 , Y10T29/49041 , Y10T29/49043 , Y10T29/49044 , Y10T29/49046 , Y10T29/49048 , Y10T29/49052
摘要： A thin film magnetic head that includes an improved P2 pole tip/yoke interface. The process for forming the P2 pole tip/yoke interface includes a CMP polishing step that is performed on the surface of the wafer subsequent to the plating of the P2 pole tip. This CMP step utilizes a relatively soft polishing pad and an acidic polishing slurry which preferentially attacks the P2 pole tip material, such that the CMP step results in the recession of the upper surface of the P2 pole tip relative to the dielectric layer surrounding it, as well as the significant rounding of the upper edges of the dielectric trench in which the P2 pole tip is formed. Thereafter, when the yoke is plated onto the P2 pole tip the rounded upper edges of the dielectric trench result in a concave curved interface between the yoke and the P2 pole tip.
摘要翻译：一种薄膜磁头，包括改进的P 2极尖/磁轭接口。用于形成P 2极尖/轭接口的工艺包括在P 2极尖的电镀之后在晶片的表面上执行的CMP抛光步骤。该CMP步骤使用相对软的抛光垫和优先攻击P 2极尖材料的酸性抛光浆料，使得CMP步骤导致P 2极尖端的上表面相对于围绕其的介电层的凹陷，以及形成有P 2极尖的电介质沟槽的上边缘的显着的四舍五入。此后，当轭被镀在P 2极尖上时，电介质沟槽的圆形上边缘导致轭和P 2极尖之间的凹形弯曲界面。

38. 发明授权

US07022248B2 Method for patterning a self-aligned coil using a damascene process 失效
标题翻译：使用镶嵌工艺图案化自对准线圈的方法
公开(公告)号：US07022248B2
公开(公告)日：2006-04-04
申请号：US10652878
申请日：2003-08-29
申请人： Daniel Wayne Bedell , Quang Le , Edward Hin Pong Lee , Son Van Nguyen , Vladimir Nikitin , Murali Ramasubramanian
发明人： Daniel Wayne Bedell , Quang Le , Edward Hin Pong Lee , Son Van Nguyen , Vladimir Nikitin , Murali Ramasubramanian
IPC分类号： B44C1/22
CPC分类号： G11B5/3967 , G11B5/17 , G11B5/3116 , G11B5/313 , G11B5/3136 , G11B5/3163 , H01F41/041 , Y10T29/49021
摘要： A method for patterning a self-aligned coil using a damascene process is disclosed. Coil pockets are formed in a first insulation layer disposed over a first pole layer. A barrier/seed layer is deposited along walls of the coil pockets in the insulation layer. Copper is formed in the coil pockets and over the insulation layer. The copper is planarized down to the insulation layer. The self-aligned coil process packs more copper into the same coil pocket and relaxes the coil alignment tolerance. Protrusions are prevented because of the more efficient and uniform spacing of the coil to reduce heat buildup in the head during a write.
摘要翻译：公开了一种使用镶嵌工艺图案化自对准线圈的方法。在设置在第一极层上的第一绝缘层中形成线圈腔。隔离层/籽晶层沿绝缘层中的线圈袋的壁被沉积。在线圈袋中形成铜，并在绝缘层上形成铜。铜平坦化到绝缘层。自对准线圈工艺将更多的铜包装到相同的线圈袋中，并松弛线圈对准公差。由于在写入期间线圈的间隔更加有效和均匀以减少头部的积聚，所以防止了突起。

39. 发明授权

US06798621B2 Shield electrical connections for tunnel valve sensors 失效
标题翻译：隧道阀门传感器屏蔽电气连接
公开(公告)号：US06798621B2
公开(公告)日：2004-09-28
申请号：US10219727
申请日：2002-08-15
申请人： Edward Hin Pong Lee , Jeffrey Gregory McCord
发明人： Edward Hin Pong Lee , Jeffrey Gregory McCord
IPC分类号： G11B539
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/313 , G11B5/3903 , G11B5/3909
摘要： A magnetic head includes a tunnel valve sensor, a first shield coupled to a first end of the tunnel valve sensor, and a second shield coupled to a second end of the tunnel valve sensor. A first connecting column electrically couples the first shield to a first read pad, and a second connecting column electrically couples the second shield to a second read pad. However, the first connecting column is magnetically uncoupled from the first shield and the second connecting column is magnetically uncoupled from the second shield. Advantageously, this eliminates or substantially reduces the influence of the connecting columns (which may be made in part from the same magnetic materials as the pole pieces) on the magnetic properties of the shields. In one example, the first connecting column is offset from the first shield and is coupled to it through a first connecting neck, and similarly the second connecting column is offset from the second shield and is coupled to it through a second connecting neck. In another example, the first and the second shields are made of a magnetic material whereas the first and the second connecting columns are made of a non-magnetic electrically conductive material.
摘要翻译：磁头包括隧道阀传感器，耦合到隧道阀传感器的第一端的第一屏蔽件和耦合到隧道阀传感器的第二端的第二屏蔽件。第一连接列将第一屏蔽层电耦合到第一读取焊盘，而第二连接柱将第二屏蔽层电耦合到第二读取焊盘。然而，第一连接柱与第一屏蔽件磁耦合，并且第二连接柱与第二屏蔽件磁耦合。有利地，这消除或基本上减少了连接柱（其可以部分地由与极片相同的磁性材料制成）对屏蔽件的磁性的影响。在一个示例中，第一连接柱偏离第一屏蔽并且通过第一连接颈部与其连接，并且类似地，第二连接柱偏离第二屏蔽并通过第二连接颈部与其连接。在另一示例中，第一和第二屏蔽由磁性材料制成，而第一和第二连接柱由非磁性导电材料制成。

40. 发明授权

US06725527B2 Method of making a magnetic head assembly having open yoke write head with highly defined narrow track width 失效
标题翻译：制造具有高度限定的窄轨道宽度的开放磁轭写头的磁头组件的方法
公开(公告)号：US06725527B2
公开(公告)日：2004-04-27
申请号：US09908083
申请日：2001-07-18
申请人： Thomas Young Chang , Glen Adam Garfunkel , Edward Hin Pong Lee , Neil Leslie Robertson , Samuel Wonder Yuan
发明人： Thomas Young Chang , Glen Adam Garfunkel , Edward Hin Pong Lee , Neil Leslie Robertson , Samuel Wonder Yuan
IPC分类号： G11B5127
CPC分类号： G11B5/3103 , G11B5/3116 , G11B5/313 , G11B5/3146 , G11B5/3967 , Y10T29/49032 , Y10T29/49043 , Y10T29/49044 , Y10T29/4906
摘要： A magnetic head assembly has an open yoke type write head constructed on top of a read head so that the write head can be constructed with a very narrow track width without restraint by the requirements of the read head. The write head has first and second pole piece portions wherein the second pole piece portion has separate front and back layer portions. A coil layer is wrapped around only the first pole piece portion and the back layer portion so that the front layer portion can be constructed separately to provide a narrow track width. Further, in a preferred embodiment the front layer portion has a reduced thickness and a higher magnetic moment than the thickness and magnetic moment of the first pole piece portion and the back layer portion. Still further, in a preferred embodiment the first pole piece portion and the back layer portion are planar due to polarization of underlying layers.
摘要翻译：磁头组件具有构造在读头的顶部上的开式轭型写入头，使得写入头可以被构造成具有非常窄的轨道宽度，而不受读取头的要求的限制。写头具有第一和第二极靴部分，其中第二极靴部分具有分离的前部和后部部分。线圈层仅缠绕在第一极靴部分和背层部分上，使得前层部分可以分开构造以提供窄的轨道宽度。此外，在优选实施例中，前层部分具有比第一极靴部分和背部部分的厚度和磁矩更小的厚度和更高的磁矩。此外，在优选实施例中，由于下层的极化，第一极靴部分和后层部分是平面的。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式