公开(公告)号：US20090011282A1

公开(公告)日：2009-01-08

申请号：US12018820

申请日：2008-01-24

Applicant: Hoo-san LEE ,  Hoon-sang OH ,  Sung-hoon CHOA

Inventor： Hoo-san LEE ,  Hoon-sang OH ,  Sung-hoon CHOA

IPC: G11B5/66

CPC classification number: G11B5/59627 ,  B82Y10/00 ,  G11B5/743 ,  G11B5/855

Abstract: A magnetic recording medium, a hard disk drive (HDD) employing the same, and a method of measuring a write read (WR) offset of the HDD are provided. The magnetic recording medium includes a disk substrate and a magnetic recording layer formed on one or both surfaces of the disk substrate, wherein the magnetic recording layer comprises: at least one pattern area patterned into a plurality of data tracks wherein the at least one pattern area is formed of a patterned magnetic substance; and at least one continuous area formed of a continuous magnetic substance, wherein the continuous area is used to measure a WR offset. Accordingly, the HDD employing the magnetic recording medium can correct the WR offset of the magnetic head without requiring large modifications.

Abstract translation: 提供一种磁记录介质，采用该记录介质的硬盘驱动器（HDD）以及测量HDD的写入读取（WR）偏移的方法。 磁记录介质包括形成在盘基片的一个或两个表面上的盘基片和磁记录层，其中磁记录层包括：图案化成多个数据道的至少一个图案区，其中至少一个图案区 由图案化的磁性物质形成; 以及由连续磁性物质形成的至少一个连续区域，其中所述连续区域用于测量WR偏移。 因此，使用磁记录介质的HDD可以校正磁头的WR偏移，而不需要大的修改。

公开(公告)号：US20080299416A1

公开(公告)日：2008-12-04

申请号：US12018270

申请日：2008-01-23

Applicant: Seong-yong YOON ,  Chee-kheng Lim ,  Hoo-san Lee ,  Hoon-sang Oh ,  Sok-hyun Kong

Inventor： Seong-yong YOON ,  Chee-kheng Lim ,  Hoo-san Lee ,  Hoon-sang Oh ,  Sok-hyun Kong

IPC: G11B5/62 ,  G11B5/66 ,  G11B5/84 ,  G11B5/65

CPC classification number: G11B5/667 ,  G11B5/64 ,  G11B5/65 ,  G11B5/7325 ,  G11B5/84

Abstract: A perpendicular magnetic recording medium and a method of manufacturing the same are provided. The perpendicular magnetic recording medium comprises a recording layer including a plurality of regions formed in the depth direction of the recording layer and a magnetic anisotropy constant of a region relatively deeper than another region, among the plurality of regions, is greater than that of the another region. The method of manufacturing a perpendicular magnetic recording medium includes: forming a recording layer having perpendicular magnetic anisotropy; and irradiating the recording layer with ions.

Abstract translation: 提供了一种垂直磁记录介质及其制造方法。 垂直磁记录介质包括记录层，该记录层包括在记录层的深度方向上形成的多个区域和多个区域中比另一区域相对更深的区域的磁各向异性常数大于另一区域的磁各向异性常数 地区。 制造垂直磁记录介质的方法包括：形成具有垂直磁各向异性的记录层; 并用离子照射记录层。

公开(公告)号：US20080181560A1

公开(公告)日：2008-07-31

申请号：US11844004

申请日：2007-08-23

Applicant: Sung Dong SUH ,  Kook Hyun SUN WOO ,  Hoo San LEE ,  Hyun Jei KIM ,  Du Hyun LEE ,  Eun Hyoung CHO

Inventor： Sung Dong SUH ,  Kook Hyun SUN WOO ,  Hoo San LEE ,  Hyun Jei KIM ,  Du Hyun LEE ,  Eun Hyoung CHO

IPC: G02B6/26

CPC classification number: G11B5/314 ,  G11B5/102 ,  G11B2005/0005 ,  G11B2005/0021

Abstract: A light-coupling structure in a type of heat-assisted magnetic recording is provided, the structure not needing a separate additional slider or a suspension arm through reduction in variation amounts of coupling due to vibrations, and being realized as a high efficient, low-cost structure with compact size. The light-coupling structure in a type of heat-assisted magnetic recording (HAMR) includes: a waveguide having, at its one end, a mirror part inclined at a certain angle; a slider having one of a groove provided along a width direction of one side thereof contacting the waveguide and a via hole provided along a width direction of one side thereof contacting the waveguide; and a fiber butt-connected to the waveguide by means of a connector provided parallel with the slider.

Abstract translation: 提供了一种热辅助磁记录中的光耦合结构，该结构通过减少由于振动引起的耦合变化量而不需要单独的另外的滑块或悬臂，并且被实现为高效， 成本结构紧凑。 一种热辅助磁记录（HAMR）中的光耦合结构包括：波导，其一端具有以一定角度倾斜的反射镜部分; 滑块，其具有沿着与波导的一侧的宽度方向设置的槽和沿着与波导的一侧的宽度方向设置的通孔; 以及通过与滑块平行设置的连接器对接到波导的光纤。

公开(公告)号：US07372618B2

公开(公告)日：2008-05-13

申请号：US11353964

申请日：2006-02-15

Applicant: Yun-woo Nam ,  Hoo-san Lee

Inventor： Yun-woo Nam ,  Hoo-san Lee

IPC: G02B26/00

CPC classification number: G11B7/22 ,  G11B7/123 ,  G11B7/1362

Abstract: A method of manufacturing a micromirror array and a method of manufacturing an optical device having a micromirror. The method of manufacturing a micromirror array includes forming an adhesion layer on a substrate and a magnetic layer on the adhesion layer, patterning the adhesion layer and magnetic layer, magnetizing the magnetic layer and forming a bonding layer on each side of the adhesion layer and the magnetic layer. The substrate is severed into units, each unit including the adhesion layer, the magnetic layer, and the bonding layer. A mirror surface is formed on a side of the substrate to form a unit micromirror structure. The unit micromirror structure is then placed in a holder to form a micromirror array.

Abstract translation: 微镜阵列的制造方法以及具有微反射镜的光学元件的制造方法。 微镜阵列的制造方法包括在基板上形成粘合层，在粘合层上形成磁性层，对粘合层和磁性层进行图案化，使磁性层磁化，在粘合层的两面形成接合层， 磁性层。 将基板切断为单位，每个单元包括粘合层，磁性层和粘合层。 在基板的一侧上形成镜面以形成单元微镜结构。 然后将单元微镜结构放置在保持器中以形成微镜阵列。

公开(公告)号：US20070188918A1

公开(公告)日：2007-08-16

申请号：US11525828

申请日：2006-09-25

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

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

IPC: G11B5/147

CPC classification number: G11B5/3116 ,  G11B5/1278 ,  G11B5/3967

Abstract: A perpendicular magnetic recording head and method of manufacturing the same are provided. The perpendicular magnetic recording head records or reads information on or from a perpendicular magnetic recording medium. The perpendicular magnetic recoding head includes a coil, a main pole, and a return pole. The coil serves as a source for generating a magnetic field. The main pole and the return pole constitute a magnetic path of the magnetic field. The main pole includes an end facing the perpendicular magnetic recording medium. The end includes a leading part serving as a front side and a trailing part serving as a rear side with respect to a movement direction of the perpendicular magnetic recording medium. Both edges of the trailing part are chamfered, and the leading part has a plane inclined with respect to an air-bearing surface (ABS). The return pole has an end spaced from the main pole, and the other end connected with the main pole.

Abstract translation: 提供了一种垂直磁记录头及其制造方法。 垂直磁记录头在垂直磁记录介质上记录或读取信息。 垂直磁记录头包括线圈，主极和返回极。 线圈用作产生磁场的源。 主极和返回极构成磁场的磁路。 主极包括面向垂直磁记录介质的一端。 该端部包括用作前侧的前导部分和用作相对于垂直磁记录介质的移动方向的后侧的后部。 尾部的两个边缘都被倒角，并且前导部分具有相对于空气轴承表面（ABS）倾斜的平面。 返回极具有与主极间隔开的端部，另一端与主极连接。

公开(公告)号：US20070003795A1

公开(公告)日：2007-01-04

申请号：US11477624

申请日：2006-06-30

Applicant: Hoon-sang Oh ,  Yong-su Kim ,  No-yeol Park ,  Hoo-san Lee ,  Chul-min Choi

Inventor： Hoon-sang Oh ,  Yong-su Kim ,  No-yeol Park ,  Hoo-san Lee ,  Chul-min Choi

IPC: G11B5/66

CPC classification number: G11B5/667

Abstract: A perpendicular magnetic recording medium including a soft magnetic underlayer. The perpendicular magnetic recording medium includes: a lower structural body including an anti-ferromagnetic layer; a first soft magnetic underlayer, a non-magnetic layer, and a second soft magnetic underlayer sequentially formed on the anti-ferromagnetic layer, where the thickness ratio of the second soft magnetic underlayer to that of the first soft magnetic underlayer is designed to be within specific range; and a recording layer formed on the second soft magnetic underlayer. Therefore, noise generated on the soft magnetic underlayer due to external magnetic fields of a magnetic head and a voice coil motor can be reduced greatly.

Abstract translation: 包括软磁性底层的垂直磁记录介质。 垂直磁记录介质包括：包括反铁磁层的下结构体; 顺序地形成在反铁磁层上的第一软磁性底层，非磁性层和第二软磁性底层，其中第二软磁性底层与第一软磁性底层的厚度比设计为在 具体范围 以及形成在第二软磁性底层上的记录层。 因此，可以大大降低由于磁头和音圈电机的外部磁场而在软磁性底层上产生的噪声。

公开(公告)号：US20060256473A1

公开(公告)日：2006-11-16

申请号：US11413000

申请日：2006-04-28

Applicant: Chee-kheng Lim ,  Yong-su Kim ,  Hoo-san Lee

Inventor： Chee-kheng Lim ,  Yong-su Kim ,  Hoo-san Lee

IPC: G11B5/147

CPC classification number: G11B5/1278 ,  G11B5/11

Abstract: A perpendicular magnetic recording head including: a data recording module comprising a main pole, a return pole, and a coil wrapped around the main pole; and a data reproduction module including magnetic shield layers and a reading device located between the magnetic shield layers, wherein the width of a lower end of the main pole is gradually reduced in a downward direction thereof, and the lower end of the main pole comprises a first part and a second part extending from the first part, the first part having a curved surface of a first curvature and the second part having a curved surface of a second curvature. The first curvature can be equal to or different from the second curvature, and magnetic shield devices can be further disposed on both sides of the lower end of the main pole.

Abstract translation: 一种垂直磁记录头，包括：数据记录模块，包括主极，返回极和缠绕在主极上的线圈; 以及包括磁屏蔽层和位于磁屏蔽层之间的读取装置的数据再现模块，其中主极的下端的宽度在其向下的方向上逐渐减小，并且主极的下端包括 第一部分和第二部分从第一部分延伸，第一部分具有第一曲率的曲面，第二部分具有第二曲率的曲面。 第一曲率可以等于或不同于第二曲率，并且磁屏蔽装置可以进一步设置在主极的下端的两侧。

公开(公告)号：US20060215317A1

公开(公告)日：2006-09-28

申请号：US11352316

申请日：2006-02-13

Applicant: Hoo-san Lee ,  Yong-su Kim

Inventor： Hoo-san Lee ,  Yong-su Kim

IPC: G11B5/147

CPC classification number: G11B5/3163 ,  G11B5/1278

Abstract: A magnetic recording head and a method of manufacturing the same are provided. The method includes layering sequentially first magnetic layer and an insulating cap layer on a first insulating layer; forming a mask pattern of a desired width on the insulating cap layer, and etching the first magnetic layer and the insulating cap layer until the first insulating layer is exposed, thereby forming a trapezoidal layered portion; depositing an insulating material on the first insulating layer to form a second insulating layer to bury a periphery of the trapezoidal layered portion; and forming a second magnetic layer on the second insulating layer.

Abstract translation: 提供磁记录头及其制造方法。 该方法包括在第一绝缘层上依次层叠第一磁性层和绝缘覆盖层; 在所述绝缘覆盖层上形成期望宽度的掩模图案，并且蚀刻所述第一磁性层和所述绝缘盖层直到所述第一绝缘层露出，从而形成梯形层叠部分; 在所述第一绝缘层上沉积绝缘材料以形成第二绝缘层以埋设所述梯形分层部分的周边; 以及在所述第二绝缘层上形成第二磁性层。

公开(公告)号：US08098456B2

公开(公告)日：2012-01-17

申请号：US11413000

申请日：2006-04-28

Applicant: Chee-kheng Lim ,  Yong-su Kim ,  Hoo-san Lee

Inventor： Chee-kheng Lim ,  Yong-su Kim ,  Hoo-san Lee

IPC: G11B5/127

CPC classification number: G11B5/1278 ,  G11B5/11

Abstract: A perpendicular magnetic recording head including: a data recording module comprising a main pole, a return pole, and a coil wrapped around the main pole; and a data reproduction module including magnetic shield layers and a reading device located between the magnetic shield layers, wherein the width of a lower end of the main pole is gradually reduced in a downward direction thereof, and the lower end of the main pole comprises a first part and a second part extending from the first part, the first part having a curved surface of a first curvature and the second part having a curved surface of a second curvature. The first curvature can be equal to or different from the second curvature, and magnetic shield devices can be further disposed on both sides of the lower end of the main pole.

Abstract translation: 一种垂直磁记录头，包括：数据记录模块，包括主极，返回极和缠绕在主极上的线圈; 以及包括磁屏蔽层和位于磁屏蔽层之间的读取装置的数据再现模块，其中主极的下端的宽度在其向下的方向上逐渐减小，并且主极的下端包括 第一部分和第二部分从第一部分延伸，第一部分具有第一曲率的曲面，第二部分具有第二曲率的曲面。 第一曲率可以等于或不同于第二曲率，并且磁屏蔽装置可以进一步设置在主极的下端的两侧。

公开(公告)号：US08007931B2

公开(公告)日：2011-08-30

申请号：US11698081

申请日：2007-01-26

Applicant: Hoo-san Lee ,  Chee-kheng Lim ,  Hoon-sang Oh ,  Sok-hyun Kong

Inventor： Hoo-san Lee ,  Chee-kheng Lim ,  Hoon-sang Oh ,  Sok-hyun Kong

IPC: G11B5/66

CPC classification number: G11B5/667 ,  Y10T428/24942

Abstract: A perpendicular magnetic recording medium including: a substrate; a perpendicular magnetic recording layer disposed over the substrate; a soft magnetic underlayer disposed between the substrate and the perpendicular magnetic recording layer; a shunting layer disposed under the soft magnetic underlayer; and an isolation layer disposed between the soft magnetic underlayer and the shunting layer and providing magnetic isolation between the shunting layer and the other layers disposed over the shunting layer are provided. The shunting layer is magnetically separated from the other magnetic layers disposed over the shunting layer, and shunts a magnetic field generated by the magnetic domain walls of the soft magnetic underlayer such that the magnetic field cannot reach a magnetic head, thereby increasing a signal-to-noise ratio (SNR).

Abstract translation: 一种垂直磁记录介质，包括：基板; 设置在所述基板上的垂直磁记录层; 设置在基板和垂直磁记录层之间的软磁性底层; 配置在软磁性底层下方的分路层; 并且设置在软磁性底层和分流层之间并且在分流层和设置在分流层之上的其它层之间提供磁隔离的隔离层。 分流层与设置在分流层上的其他磁性层磁分离，并且分流由软磁性底层的磁畴壁产生的磁场，使得磁场不能到达磁头，从而增加信号到 - 噪声比（SNR）。