公开(公告)号：US07459993B2

公开(公告)日：2008-12-02

申请号：US11647389

申请日：2006-12-29

Applicant: Kook-hyun Sunwoo ,  Yong-su Kim

Inventor： Kook-hyun Sunwoo ,  Yong-su Kim

IPC: H01P5/12 ,  H01P7/00

CPC classification number: H03H9/706 ,  H03H9/0571 ,  H03H9/176 ,  H03H2009/02212

Abstract: 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.

Abstract translation: 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

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

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

IPC: G11B5/147

CPC classification number: G11B5/3116 ,  G11B5/1278 ,  G11B5/1874

Abstract: 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.

Abstract translation: 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：US20090059424A1

公开(公告)日：2009-03-05

申请号：US12111994

申请日：2008-04-30

Applicant: Yong-su Kim ,  Kook-hyun Sunwoo

Inventor： Yong-su Kim ,  Kook-hyun Sunwoo

IPC: G11B5/17 ,  G11B5/82

CPC classification number: G11B5/3133 ,  G11B5/02 ,  G11B5/1278 ,  G11B2005/0002

Abstract: 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.

Abstract translation: 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：US20070159270A1

公开(公告)日：2007-07-12

申请号：US11647389

申请日：2006-12-29

Applicant: Kook-hyun Sunwoo ,  Yong-su Kim

Inventor： Kook-hyun Sunwoo ,  Yong-su Kim

IPC: H03H9/70 ,  H03H9/54

CPC classification number: H03H9/706 ,  H03H9/0571 ,  H03H9/176 ,  H03H2009/02212

Abstract: 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.

Abstract translation: 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

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

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

IPC: G11B5/127

CPC classification number: G11B5/1278 ,  G11B5/3116

Abstract: 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.

Abstract translation: 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

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

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

IPC: G11B5/127

CPC classification number: G11B5/3116

Abstract: 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.

Abstract translation: 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：US08042259B2

公开(公告)日：2011-10-25

申请号：US12708341

申请日：2010-02-18

Applicant: Hoo-san Lee ,  Young-hun Im ,  Yong-su Kim

Inventor： Hoo-san Lee ,  Young-hun Im ,  Yong-su Kim

IPC: G11B5/127 ,  H04R31/00

CPC classification number: G11B5/1871 ,  G11B5/1278 ,  G11B5/3116 ,  Y10T29/49039 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/49046 ,  Y10T29/49048 ,  Y10T29/49052

Abstract: A magnetic recording head and a method of manufacturing the same. The magnetic recording head includes a stack containing a main pole and a return pole. The stack includes a first magnetic layer having a groove formed therein; an insulating layer covering a surface of the groove; and a second magnetic layer pattern filling the groove covered with the insulating layer.

Abstract translation: 磁记录头及其制造方法。 磁记录头包括一个包含一个主极和一个返回极的堆叠。 堆叠包括其中形成有凹槽的第一磁性层; 覆盖所述槽的表面的绝缘层; 以及填充由绝缘层覆盖的沟槽的第二磁性层图案。

公开(公告)号：US07672081B2

公开(公告)日：2010-03-02

申请号：US11503296

申请日：2006-08-14

Applicant: Chee-kheng Lim ,  Eun-sik Kim ,  Yong-su Kim

Inventor： Chee-kheng Lim ,  Eun-sik Kim ,  Yong-su Kim

IPC: G11B5/127

CPC classification number: G11B5/012 ,  G11B5/1278 ,  G11B5/3116 ,  G11B5/3146 ,  G11B2005/0029

Abstract: A perpendicular magnetic recording head which moves in a track direction of a recording layer of a perpendicular magnetic recording medium to write information on the recording layer or read information from the recording layer. The perpendicular magnetic recording head includes: the perpendicular magnetic recording medium including a soft magnetic underlayer and the recording layer; a write head including a main pole that applies a magnetic field to, and writes information to, the recording layer and a return pole having a first end which is connected to the main pole and having a second end which is spaced apart from the main pole over an air bearing surface (ABS) of the perpendicular magnetic recording head which is adjacent to the recording layer; and a permanent magnet formed on at least one side of the write head.

Abstract translation: 垂直磁记录头，其在垂直磁记录介质的记录层的轨道方向上移动以在记录层上写入信息或从记录层读取信息。 垂直磁记录头包括：包括软磁性底层和记录层的垂直磁记录介质; 写头，其包括向记录层施加磁场并向其写入信息的主极;以及返回极，其具有连接到主极的第一端，并且具有与主极间隔开的第二端 在与记录层相邻的垂直磁记录头的空气轴承表面（ABS）上; 以及形成在所述写入头的至少一侧上的永磁体。

公开(公告)号：US07379276B2

公开(公告)日：2008-05-27

申请号：US10943232

申请日：2004-09-17

Applicant: Young-hun Im ,  Yong-su Kim

Inventor： Young-hun Im ,  Yong-su Kim

IPC: G11B5/39 ,  G11B5/147

CPC classification number: G11B5/1875

Abstract: Provided is a magnetic recording head including a return pole, a writing pole spaced by a predetermined distance from the return pole, an induction writing coil for inducing a magnetic field to be formed across the writing pole, and a plurality of shield layers formed on the writing pole. Accordingly, magnetic fields generated inside and outside the magnetic recording head are prevented from concentrating on the return pole, and information is effectively written on and erased from an information recording media.

Abstract translation: 提供了一种磁记录头，其包括返回极，与返回极隔开预定距离的书写杆，用于引导跨越书写极的磁场的感应写入线圈，以及形成在该磁极上的多个屏蔽层 书写杆 因此，防止在磁记录头内部和外部产生的磁场集中在返回极上，并且有效地将信息从信息记录介质写入并擦除。

公开(公告)号：US20080084633A1

公开(公告)日：2008-04-10

申请号：US11729852

申请日：2007-03-30

Applicant: Hyun-jei Kim ,  Yong-su Kim ,  Hoon-sang Oh ,  Hoo-san Lee

Inventor： Hyun-jei Kim ,  Yong-su Kim ,  Hoon-sang Oh ,  Hoo-san Lee

IPC: G11B5/74

CPC classification number: G11B5/82 ,  B82Y10/00 ,  G11B5/02 ,  G11B5/314 ,  G11B5/3967 ,  G11B5/74 ,  G11B5/743 ,  G11B5/855 ,  G11B9/02 ,  G11B2005/0002

Abstract: An information recording medium, a method of manufacturing the information recording medium, a read/write head, and a method of manufacturing the read/write head are provided. The information recording medium includes magnetic recording layers formed of a ferromagnetic substance and electrical recording layers formed of a ferroelectric substance. The read/write head includes an electromagnetic write head including a main pole, a return pole magnetically connected to the main pole but electrically isolated from the main pole, a magnetic field applicator which applies a magnetic field to the main pole, and a voltage source which applies a bias voltage to the main pole; a magnetic read head provided an a side of the electromagnetic write head; and an electrical read head provided on an other side of the electromagnetic write head.

Abstract translation: 提供信息记录介质，制造信息记录介质的方法，读/写头以及制造读/写头的方法。 信息记录介质包括由铁磁物质形成的磁记录层和由铁电物质形成的电记录层。 读/写头包括电磁写入头，其包括主极，磁极连接到主极但与主极电隔离的返回极，向主极施加磁场的磁场施加器，以及电压源 其对主极施加偏置电压; 磁读头提供电磁写头的一侧; 以及设置在电磁写入头的另一侧的电读取头。