公开(公告)号：US20090059424A1

公开(公告)日：2009-03-05

申请号：US12111994

申请日：2008-04-30

申请人： Yong-su Kim ,  Kook-hyun Sunwoo

发明人： Yong-su Kim ,  Kook-hyun Sunwoo

IPC分类号： G11B5/17 ,  G11B5/82

CPC分类号： G11B5/3133 ,  G11B5/02 ,  G11B5/1278 ,  G11B2005/0002

摘要： Provided are a magnetic head, a magnetic recording medium, and a magnetic recording apparatus using the magnetic head and the magnetic recording medium. The magnetic head is used for magnetically recording data on a magnetic recording medium and includes a main pole; a return-yoke forming a magnetic path along with the main pole; a coil for inducing a magnetic field to emit a magnetic field for magnetic recording through an end tip of the main pole near a magnetic recording medium; and an insulating layer for electrically insulating the main pole from the return-yoke. The main pole is electrically connected to an external device and generates an electric field for assisting magnetic recording along the magnetic field for magnetic recording. In this structure, the coercive force of a magnetic recording layer can be reduced during magnetic recording so that data can be recorded at high density.

摘要翻译： 提供了磁头，磁记录介质和使用磁头和磁记录介质的磁记录装置。 磁头用于在磁记录介质上磁记录数据，并包括主极; 形成与主极一起形成磁路的返回轭; 线圈，用于通过磁极记录介质附近的主极的末端引起磁场发出用于磁记录的磁场; 以及用于使主极与返回轭电绝缘的绝缘层。 主极电连接到外部装置，并产生用于辅助磁场记录的磁场用于磁记录的电场。 在这种结构中，在磁记录期间可以减小磁记录层的矫顽力，从而可以以高密度记录数据。

公开(公告)号：US20080278852A1

公开(公告)日：2008-11-13

申请号：US12028025

申请日：2008-02-08

申请人： Yong-su KIM ,  Kook-hyun Sunwoo ,  Kyoung-won Na

发明人： Yong-su KIM ,  Kook-hyun Sunwoo ,  Kyoung-won Na

IPC分类号： G11B5/33

CPC分类号： G11B5/1278 ,  G11B5/3116

摘要： A perpendicular magnetic recording head and a method of manufacturing said perpendicular magnetic recording head are provided. The perpendicular magnetic recording head has a main pole, a coil, which applies a magnetic field to the main pole, and a return pole constituting a magnetic circuit together with the main pole. The main pole has a back pole around which the coil is wound and a front pole contacting the back pole. The back pole and the front pole are formed on the same plane.

摘要翻译： 提供垂直磁记录头和制造所述垂直磁记录头的方法。 垂直磁记录头具有向主极​​施加磁场的主极，线圈和与主极一起构成磁路的返回极。 主极具有一个后极，线圈缠绕在该杆上，前极接触后极。 后极和前极形成在同一平面上。

公开(公告)号：US08233236B2

公开(公告)日：2012-07-31

申请号：US12169291

申请日：2008-07-08

申请人： Yong-su Kim ,  Kook-hyun Sunwoo ,  Kyoung-won Na

发明人： Yong-su Kim ,  Kook-hyun Sunwoo ,  Kyoung-won Na

IPC分类号： G11B5/127

CPC分类号： G11B5/3116

摘要： A magnetic write head includes a main pole, a return yoke forming a magnetic path with the main pole, a side shield formed at both sides of the main pole, and a shield gap layer formed between the side shield and the return yoke. The side shield and the return yoke have portions connected to each, and are separated from each other by the shield gap layer in an area except for the portions which contact. A first gap layer formed of a nonmagnetic insulation material is formed between both sides of the main pole and the side shield. A gap is formed between an end portion of the main pole and an end portion of the return yoke and a second gap layer is formed in the gap with a nonmagnetic insulation material.

摘要翻译： 磁写头包括主极，形成与主极的磁路的返回磁轭，形成在主电极两侧的侧屏蔽以及形成在侧屏蔽和返回磁轭之间的屏蔽间隙层。 侧护罩和返回轭具有连接到每个的部分，并且在除接触部分之外的区域中通过屏蔽间隙层彼此分离。 由主磁极和侧屏两侧形成由非磁性绝缘材料形成的第一间隙层。 在主极的端部和返回轭的端部之间形成间隙，并且在间隙中用非磁性绝缘材料形成第二间隙层。

公开(公告)号：US07459993B2

公开(公告)日：2008-12-02

申请号：US11647389

申请日：2006-12-29

申请人： Kook-hyun Sunwoo ,  Yong-su Kim

发明人： Kook-hyun Sunwoo ,  Yong-su Kim

IPC分类号： H01P5/12 ,  H01P7/00

CPC分类号： H03H9/706 ,  H03H9/0571 ,  H03H9/176 ,  H03H2009/02212

摘要： A resonator, a band-pass filter, and a duplexer are provided. In the resonator, a first electrode is formed of a nonmagnetic conductive material. A ferromagnetic fixed layer is disposed on the first electrode and has a magnetization direction which is fixed. A nonmagnetic conductive layer is disposed on the ferromagnetic fixed layer. A ferromagnetic free layer is disposed on the nonmagnetic conductive layer and has a magnetization direction which varies depending on an external magnetic field. A second electrode is disposed on the ferromagnetic free layer and comprises a nonmagnetic conductive material. The band-pass filter and the duplexer are configured using the resonator. The band-pass filter and the duplexer can operate in a high-frequency range and be miniaturized. The bandwidth of the band-pass filter and the duplexer can be adjusted and the band-pass filter and the duplexer can be formed in one body with an integrated circuit.

摘要翻译： 提供了一种谐振器，带通滤波器和双工器。 在谐振器中，第一电极由非磁性导电材料形成。 铁磁固定层设置在第一电极上，并具有固定的磁化方向。 非磁性导电层设置在铁磁固定层上。 铁磁自由层设置在非磁性导电层上，具有取决于外部磁场而变化的磁化方向。 第二电极设置在铁磁性自由层上并且包括非磁性导电材料。 使用谐振器配置带通滤波器和双工器。 带通滤波器和双工器可以在高频范围内操作并且小型化。 可以调整带通滤波器和双工器的带宽，并且带通滤波器和双工器可以通过集成电路形成在一体中。

公开(公告)号：US20070285837A1

公开(公告)日：2007-12-13

申请号：US11730435

申请日：2007-04-02

申请人： Young-hun Im ,  Yong-su Kim ,  Kook-hyun Sunwoo ,  Hyun-jei Kim

发明人： Young-hun Im ,  Yong-su Kim ,  Kook-hyun Sunwoo ,  Hyun-jei Kim

IPC分类号： G11B5/147

CPC分类号： G11B5/3116 ,  G11B5/1278 ,  G11B5/1874

摘要： Provided is a perpendicular magnetic recording head for high density recording. The perpendicular magnetic recording head includes a coil, a return pole, a sub-yoke, and a main pole. The main pole has a pole tip including a second end surface that is spaced a predetermined distance from the return pole and faces the perpendicular magnetic recording medium, and surrounding at least a portion of the first end surface.

摘要翻译： 提供了用于高密度记录的垂直磁记录头。 垂直磁记录头包括线圈，返回极，子轭和主极。 主极具有极尖，其包括与返回极间隔预定距离并面向垂直磁记录介质的第二端表面，并且围绕第一端表面的至少一部分。

公开(公告)号：US20070159270A1

公开(公告)日：2007-07-12

申请号：US11647389

申请日：2006-12-29

申请人： Kook-hyun Sunwoo ,  Yong-su Kim

发明人： Kook-hyun Sunwoo ,  Yong-su Kim

IPC分类号： H03H9/70 ,  H03H9/54

CPC分类号： H03H9/706 ,  H03H9/0571 ,  H03H9/176 ,  H03H2009/02212

摘要： A resonator, a band-pass filter, and a duplexer are provided. In the resonator, a first electrode is formed of a nonmagnetic conductive material. A ferromagnetic fixed layer is disposed on the first electrode and has a magnetization direction which is fixed. A nonmagnetic conductive layer is disposed on the ferromagnetic fixed layer. A ferromagnetic free layer is disposed on the nonmagnetic conductive layer and has a magnetization direction which varies depending on an external magnetic field. A second electrode is disposed on the ferromagnetic free layer and comprises a nonmagnetic conductive material. The band-pass filter and the duplexer are configured using the resonator. The band-pass filter and the duplexer can operate in a high-frequency range and be miniaturized. The bandwidth of the band-pass filter and the duplexer can be adjusted and the band-pass filter and the duplexer can be formed in one body with an integrated circuit.

摘要翻译： 提供了一种谐振器，带通滤波器和双工器。 在谐振器中，第一电极由非磁性导电材料形成。 铁磁固定层设置在第一电极上，并具有固定的磁化方向。 非磁性导电层设置在铁磁固定层上。 铁磁自由层设置在非磁性导电层上，具有取决于外部磁场而变化的磁化方向。 第二电极设置在铁磁性自由层上并且包括非磁性导电材料。 使用谐振器配置带通滤波器和双工器。 带通滤波器和双工器可以在高频范围内操作并且小型化。 可以调整带通滤波器和双工器的带宽，并且带通滤波器和双工器可以通过集成电路形成在一体中。

公开(公告)号：US08144426B2

公开(公告)日：2012-03-27

申请号：US12028025

申请日：2008-02-08

申请人： Yong-su Kim ,  Kook-hyun Sunwoo ,  Kyoung-won Na

发明人： Yong-su Kim ,  Kook-hyun Sunwoo ,  Kyoung-won Na

IPC分类号： G11B5/127

CPC分类号： G11B5/1278 ,  G11B5/3116

摘要： A perpendicular magnetic recording head and a method of manufacturing said perpendicular magnetic recording head are provided. The perpendicular magnetic recording head has a main pole, a coil, which applies a magnetic field to the main pole, and a return pole constituting a magnetic circuit together with the main pole. The main pole has a back pole around which the coil is wound and a front pole contacting the back pole. The back pole and the front pole are formed on the same plane.

摘要翻译： 提供垂直磁记录头和制造所述垂直磁记录头的方法。 垂直磁记录头具有向主极​​施加磁场的主极，线圈和与主极一起构成磁路的返回极。 主极具有一个后极，线圈缠绕在该杆上，前极接触后极。 后极和前极形成在同一平面上。

公开(公告)号：US20080055789A1

公开(公告)日：2008-03-06

申请号：US11896214

申请日：2007-08-30

申请人： Eun-sik Kim ,  Kook-hyun Sunwoo ,  Sung-chul Lee

发明人： Eun-sik Kim ,  Kook-hyun Sunwoo ,  Sung-chul Lee

IPC分类号： G11B5/33

CPC分类号： G11C11/16

摘要： Provided is a magnetic memory device that uses a current induced switching (CID) method. The magnetic memory device that uses a CID method includes a lower electrode, a magnetic resistance structure that is formed on the lower electrode which comprises a free layer whose widths of two sides are varied, and an upper electrode formed on the magnetic resistance structure.

摘要翻译： 提供了使用电流感应开关（CID）方法的磁存储器件。 使用CID方法的磁存储器件包括下电极，形成在下电极上的磁阻结构，该电阻结构包括两侧宽度变化的自由层和形成在该磁阻结构上的上电极。

公开(公告)号：US08035921B2

公开(公告)日：2011-10-11

申请号：US12018939

申请日：2008-01-24

申请人： Kook-hyun Sunwoo

发明人： Kook-hyun Sunwoo

IPC分类号： G11B5/127

CPC分类号： G11B5/3123 ,  G11B5/1278 ,  G11B5/3163 ,  Y10T29/49062

摘要： A perpendicular magnetic recording head includes a main pole, a return yoke forming a magnetic path with the main pole, and a coil encompassing the main pole in a solenoid structure to allow the main pole to generate a magnetic field that records information on a recording medium is provided. When a side of the main pole toward the return yoke is an upper portion of the main pole and a side of the main pole opposite to the return yoke is a lower portion of the main pole, the coil includes a lower wire portion passing through the lower portion of the main pole, an upper wire portion passing through the upper portion of the main pole, and a connection portion electrically connecting the lower wire portion and the upper wire portion, and the upper wire portion includes an upper wire layer having at least two layers. The structure may improve a high frequency recording characteristics required for achieving a high recording density.

摘要翻译： 垂直磁记录头包括主极，形成与主极的磁路的返回磁轭和在螺线管结构中围绕主极的线圈，以允许主极产生将信息记录在记录介质上的磁场 被提供。 当主极朝返回轭的一侧是主极的上部，并且与返回轭相反的主极的一侧是主极的下部时，线圈包括通过 主极的下部，通过主极的上部的上部线部分，以及电连接下部线部分和上部线部分的连接部分，并且上部线部分包括至少具有至少 两层。 该结构可以提高实现高记录密度所需的高频记录特性。

公开(公告)号：US07439825B2

公开(公告)日：2008-10-21

申请号：US11448707

申请日：2006-06-08

申请人： Kuang-woo Nam ,  Kook-hyun Sunwoo ,  In-sang Song ,  Sang-wook Kwon ,  Duck-hwan Kim ,  Chul-soo Kim ,  Sang-chul Sul ,  Yun-kwon Park ,  Hae-seok Park ,  Jea-shik Shin ,  Dong-ha Shim ,  Young-tack Hong ,  Jong-seok Kim ,  Seok-mo Chang ,  Seok-chul Yun

发明人： Kuang-woo Nam ,  Kook-hyun Sunwoo ,  In-sang Song ,  Sang-wook Kwon ,  Duck-hwan Kim ,  Chul-soo Kim ,  Sang-chul Sul ,  Yun-kwon Park ,  Hae-seok Park ,  Jea-shik Shin ,  Dong-ha Shim ,  Young-tack Hong ,  Jong-seok Kim ,  Seok-mo Chang ,  Seok-chul Yun

IPC分类号： H03H9/56 ,  H03H9/54

CPC分类号： H03H9/588 ,  H03H3/02 ,  H03H9/02228 ,  H03H2003/0071

摘要： An integrated filter including a film bulk acoustic resonator (FBAR) and a surface acoustic wave (SAW) resonator and a method of fabricating the integrated filter. The integrated filter includes: a substrate; a first electrode positioned in a predetermined first area on an upper surface of the substrate; a first piezoelectric layer positioned on the first electrode; a second electrode positioned on the first piezoelectric layer; a second piezoelectric layer positioned in a predetermined second area on the upper surface of the substrate; and at least one inter-digital transducer (IDT) electrode positioned on the second piezoelectric layer. The IDT electrode includes: a first IDT electrode formed in a comb structure on the second piezoelectric layer; and a second IDT electrode formed in a comb structure on the second piezoelectric layer so as to mesh with the first IDT electrode. The first and second piezoelectric layers are formed of an identical material. Thus, an integrated filter which operates in various frequency bands can be made compact.

摘要翻译： 一种包括膜体声波谐振器（FBAR）和表面声波（SAW）谐振器的集成滤波器以及一体化滤波器的制造方法。 集成滤波器包括：基板; 位于所述基板的上表面上的预定第一区域中的第一电极; 位于所述第一电极上的第一压电层; 位于所述第一压电层上的第二电极; 位于所述基板的上表面上的预定的第二区域中的第二压电层; 和位于第二压电层上的至少一个数字间换能器（IDT）电极。 IDT电极包括：在第二压电层上形成为梳状结构的第一IDT电极; 以及在第二压电层上形成为梳状结构的第二IDT电极，以便与第一IDT电极啮合。 第一和第二压电层由相同的材料形成。 因此，可以使在各种频带中工作的集成滤波器紧凑。