公开(公告)号：US09180608B2

公开(公告)日：2015-11-10

申请号：US13489968

申请日：2012-06-06

Applicant: Woong Ko ,  Ki-yeon Yang ,  Byung-kyu Lee ,  Du-hyun Lee ,  Jae-kwan Kim

Inventor： Woong Ko ,  Ki-yeon Yang ,  Byung-kyu Lee ,  Du-hyun Lee ,  Jae-kwan Kim

IPC: B29C33/38 ,  B29C33/42 ,  B29C43/02

CPC classification number: B29C33/424 ,  B29C43/021 ,  B29C2043/025

Abstract: A stamp includes at least one protrusion on a protrusion pattern, and an end portion of the at least one protrusion may have a non-planarized surface. The end portion of the protrusion may have a concave structure, that is, the end portion includes a center region and an edge region, and the edge region is higher than the center region.

Abstract translation: 印模包括在突起图案上的至少一个突起，并且所述至少一个突起的端部可以具有非平坦化表面。 突起的端部可以具有凹形结构，即，端部包括中心区域和边缘区域，并且边缘区域高于中心区域。

公开(公告)号：US08003163B2

公开(公告)日：2011-08-23

申请号：US11748566

申请日：2007-05-15

Applicant: Du-hyun Lee ,  Seong-yong Yoon ,  Jin-seung Sohn ,  Byung-kyu Lee

Inventor： Du-hyun Lee ,  Seong-yong Yoon ,  Jin-seung Sohn ,  Byung-kyu Lee

IPC: G11B5/82

CPC classification number: G11B5/82 ,  B82Y10/00 ,  G11B5/65 ,  G11B5/743 ,  G11B5/855

Abstract: Provided are a magnetic recording medium and a method of manufacturing the magnetic recording medium. The magnetic recording medium includes a substrate, a soft magnetic underlayer formed on the substrate, a texturing layer formed on the soft magnetic underlayer and including a uniform pattern, and a recording layer including magnetic grains and a non-magnetic boundary region isolating the magnetic grains. The magnetic grains and the non-magnetic boundary region of the recording layer are formed into a regular granular structure by segregation according to the regular pattern of the texturing layer. Therefore, a regular granular structure can be formed in the recording layer without a process such as etching of the recording layer, so that the recording density of the magnetic recording medium can be largely improved.

Abstract translation: 提供磁记录介质和制造磁记录介质的方法。 磁记录介质包括基板，形成在基板上的软磁性底层，形成在软磁性底层上的包含均匀图案的纹理层，以及包括磁性颗粒和磁性颗粒隔离的非磁性边界区域的记录层 。 根据纹理层的规则图案，记录层的磁性颗粒和非磁性边界区域通过偏析形成规则的颗粒结构。 因此，可以在记录层中形成规则的颗粒结构，而不需要诸如蚀刻记录层的处理，从而可以大大提高磁记录介质的记录密度。

公开(公告)号：US20060188753A1

公开(公告)日：2006-08-24

申请号：US11404758

申请日：2006-04-17

Applicant: Byung-kyu Lee ,  Hoon-sang Oh ,  Kyung-jin Lee

Inventor： Byung-kyu Lee ,  Hoon-sang Oh ,  Kyung-jin Lee

IPC: G11B5/66

CPC classification number: G11B5/66 ,  G11B5/656 ,  G11B5/667 ,  G11B5/7325 ,  G11B5/74 ,  G11B2005/0005 ,  G11B2005/001 ,  G11B2005/0029

Abstract: A perpendicular magnetic recording medium having a good thermal stability and a high recording density is provided. The perpendicular magnetic recording medium includes at least a first and a second perpendicular magnetic recording layer and a substrate supporting the first and the second perpendicular magnetic recording layers. The first and the second perpendicular magnetic recording layers have different physical/magnetic properties and are formed of materials that compensate the different physical/magnetic properties. The first and the second perpendicular magnetic recording layers are selected from a layer for improving perpendicular magnetic anisotropic energy (Ku), a layer for reducing the size of crystal grains, a layer for reducing the size of magnetic domains, a layer for increasing an SNR, a layer for improving signal output, a layer for reducing noise, a layer for improving the uniformity of crystal grain sizes, and a layer for improving the uniformity of magnetic domain sizes.

公开(公告)号：US07060375B2

公开(公告)日：2006-06-13

申请号：US10615956

申请日：2003-07-10

Applicant: Byung-kyu Lee ,  Hoon-sang Oh ,  Kyung-jin Lee

Inventor： Byung-kyu Lee ,  Hoon-sang Oh ,  Kyung-jin Lee

IPC: G11B5/66

CPC classification number: G11B5/66 ,  G11B5/656 ,  G11B5/667 ,  G11B5/7325 ,  G11B5/74 ,  G11B2005/0005 ,  G11B2005/001 ,  G11B2005/0029

Abstract: A perpendicular magnetic recording medium having a good thermal stability and a high recording density is provided. The perpendicular magnetic recording medium includes at least a first and a second perpendicular magnetic recording layer and a substrate supporting the first and the second perpendicular magnetic recording layers. The first and the second perpendicular magnetic recording layers have different physical/magnetic properties and are formed of materials that compensate the different physical/magnetic properties. The first and the second perpendicular magnetic recording layers are selected from a layer for improving perpendicular magnetic anisotropic energy (Ku), a layer for reducing the size of crystal grains, a layer for reducing the size of magnetic domains, a layer for increasing an SNR, a layer for improving signal output, a layer for reducing noise, a layer for improving the uniformity of crystal grain sizes, and a layer for improving the uniformity of magnetic domain sizes.

公开(公告)号：US06700739B2

公开(公告)日：2004-03-02

申请号：US09826367

申请日：2001-04-05

Applicant: Yong-su Kim ,  Young-hoon Im ,  Byung-kyu Lee

Inventor： Yong-su Kim ,  Young-hoon Im ,  Byung-kyu Lee

IPC: G11B5187

CPC classification number: G11B5/313 ,  G11B5/1871 ,  G11B5/23 ,  G11B5/3116 ,  G11B5/3166

Abstract: A magnetic head including an upper pole and a lower pole for generating a leakage magnetic flux to magnetize a recording medium to have a predetermined pattern, wherein the upper pole has a structure in which the central portion of a side opposite to the recording medium is thicker than the edges of the side. In this magnetic head, the upper pole has a shape in which its central portion protrudes higher than its edges. Thus, the shape of a magnetic field distributed can be maintained rectangular even if the width of the upper pole is reduced, which enables an increase in the track density of a recording medium.

Abstract translation: 一种包括上极和下极的磁头，用于产生泄漏磁通以磁化记录介质以具有预定图案，其中上极具有其中与记录介质相对的一侧的中心部分较厚的结构 比边的边缘。 在该磁头中，上极具有其中心部分比其边缘突出的形状。 因此，即使上极的宽度减小，分布的磁场的形状也可以保持矩形，这使得能够增加记录介质的轨道密度。

公开(公告)号：US20120152887A1

公开(公告)日：2012-06-21

申请号：US13170766

申请日：2011-06-28

Applicant: Byung-kyu Lee ,  Du-hyun Lee ,  Woong Ko

Inventor： Byung-kyu Lee ,  Du-hyun Lee ,  Woong Ko

IPC: B29C33/42 ,  B82Y30/00

CPC classification number: B41C1/02 ,  B29C33/3842 ,  B82Y10/00 ,  B82Y40/00 ,  G03F7/0002 ,  G03F7/0015

Abstract: Methods of manufacturing a nanoimprint stamp are provided. The method may include forming a pattern on a surface of a master substrate, depositing an etch barrier layer on a surface of a stamp substrate, coating a photoresist on one of the surfaces of the master substrate and the stamp substrate on which an etch barrier layer is formed, forming a photoresist pattern by pressing the master substrate against the stamp substrate, forming a hard mask by etching the etch barrier layer using the photoresist pattern, and etching the stamp substrate using the hard mask as an etch mask.

Abstract translation: 提供制造纳米压印印模的方法。 该方法可以包括在母板的表面上形成图案，在印模基板的表面上沉积蚀刻阻挡层，在主基板和印模基板的一个表面上涂覆光致抗蚀剂，在其上具有蚀刻阻挡层 形成光刻胶图案，通过将母版基板压靠在印模基板上，通过使用光致抗蚀剂图案蚀刻蚀刻阻挡层形成硬掩模，并使用硬掩模作为蚀刻掩模蚀刻印模基板。

公开(公告)号：US07746589B2

公开(公告)日：2010-06-29

申请号：US12055344

申请日：2008-03-26

Applicant: Dong-ki Min ,  Seung-bum Hong ,  Byung-kyu Lee ,  Jin-seung Sohn

Inventor： Dong-ki Min ,  Seung-bum Hong ,  Byung-kyu Lee ,  Jin-seung Sohn

IPC: G11B5/09

CPC classification number: G11B5/82 ,  B82Y10/00 ,  G11B5/012 ,  G11B5/743 ,  G11B5/746 ,  G11B5/855 ,  G11B9/02

Abstract: Provided are a bit patterned medium having a super track, a reading head which reads data recorded on the bit-patterned medium, and a hard disk drive (HDD) for recording/reading data on/from the bit patterned medium. The bit patterned medium includes a substrate, and a recording layer formed with a plurality of bit cells separated from each other along a plurality of tracks forming concentric circles having different radii on the substrate, wherein each track includes a super track including a plurality of sub-tracks, and bit cells formed on one of the sub-tracks are arranged at different positions in a circumference direction of the recording layer to bit cells formed on adjacent sub-tracks. The reading head which reads data recorded on a bit patterned medium has a width in a cross-track direction sufficient for reading data of an equal number of bit cells as the plurality of sub-tracks.

Abstract translation: 提供了具有超级轨道的位图案化介质，读取记录在位图形介质上的数据的读取头和用于在位图形介质上记录/读取数据的硬盘驱动器（HDD）。 位图案化介质包括衬底和形成有沿着多个轨道彼此分离的多个位单元的记录层，所述多个轨道在衬底上形成具有不同半径的同心圆，其中每个轨道包括包括多个子区域的超轨迹 形成在一个子轨道上的位单元被布置在记录层的圆周方向上与形成在相邻子轨道上的位单元的不同位置。 读取记录在位图形介质上的数据的读取头的宽度在跨轨道方向上足以读取与多个子轨道相同数量的位单元的数据。

公开(公告)号：US07710686B2

公开(公告)日：2010-05-04

申请号：US11643761

申请日：2006-12-22

Applicant: Hae-sung Kim ,  Jin-seung Sohn ,  Myung-bok Lee ,  Byung-kyu Lee ,  Sung-dong Suh ,  Eun-hyoung Cho

Inventor： Hae-sung Kim ,  Jin-seung Sohn ,  Myung-bok Lee ,  Byung-kyu Lee ,  Sung-dong Suh ,  Eun-hyoung Cho

IPC: G11B5/127

CPC classification number: G11B5/127 ,  G11B5/02 ,  G11B5/314 ,  G11B2005/001 ,  G11B2005/0021

Abstract: A heat-assisted magnetic recording head (HAMR) head includes a magnetic recording head including a recording pole for applying a magnetic recording field on a magnetic recording medium and a return pole magnetically connected to the recording pole to form a magnetic path, a light source for emitting light, and an optical transmission module including an photonic crystal waveguide disposed at a side of the magnetic recording head to guide light incident from the light source and a nano aperture for enhancing an optical field by varying an intensity distribution of the light guided through the photonic crystal waveguide.

Abstract translation: 热辅助磁记录头（HAMR）头包括磁记录头，磁记录头包括用于在磁记录介质上施加磁记录场的记录磁极和与记录磁极磁连接以形成磁路的返回磁极，光源 以及光传输模块，其包括设置在磁记录头侧的光子晶体波导以引导从光源入射的光，以及纳米孔径，用于通过改变导光的光的强度分布来增强光场 光子晶体波导。

公开(公告)号：US20090067078A1

公开(公告)日：2009-03-12

申请号：US12055344

申请日：2008-03-26

Applicant: Dong-ki MIN ,  Seung-bum Hong ,  Byung-kyu Lee ,  Jin-seung Sohn

Inventor： Dong-ki MIN ,  Seung-bum Hong ,  Byung-kyu Lee ,  Jin-seung Sohn

IPC: G11B5/09

CPC classification number: G11B5/82 ,  B82Y10/00 ,  G11B5/012 ,  G11B5/743 ,  G11B5/746 ,  G11B5/855 ,  G11B9/02

Abstract: Provided are a bit patterned medium having a super track, a reading head which reads data recorded on the bit-patterned medium, and a hard disk drive (HDD) for recording/reading data on/from the bit patterned medium. The bit patterned medium includes a substrate, and a recording layer formed with a plurality of bit cells separated from each other along a plurality of tracks forming concentric circles having different radii on the substrate, wherein each track includes a super track including a plurality of sub-tracks, and bit cells formed on one of the sub-tracks are arranged at different positions in a circumference direction of the recording layer to bit cells formed on adjacent sub-tracks. The reading head which reads data recorded on a bit patterned medium has a width in a cross-track direction sufficient for reading data of an equal number of bit cells as the plurality of sub-tracks.

Abstract translation: 提供了具有超级轨道的位图案化介质，读取记录在位图形介质上的数据的读取头和用于在位图形介质上记录/读取数据的硬盘驱动器（HDD）。 位图案化介质包括衬底和形成有沿着多个轨道彼此分离的多个位单元的记录层，所述多个轨道在衬底上形成具有不同半径的同心圆，其中每个轨道包括包括多个子区域的超轨迹 形成在一个子轨道上的位单元被布置在记录层的圆周方向上与形成在相邻子轨道上的位单元的不同位置。 读取记录在位图形介质上的数据的读取头的宽度在跨轨道方向上足以读取与多个子轨道相同数量的位单元的数据。

公开(公告)号：US20080106821A1

公开(公告)日：2008-05-08

申请号：US11755765

申请日：2007-05-31

Applicant: Chee-kheng Lim ,  Jin-seung Sohn ,  Byung-kyu Lee

Inventor： Chee-kheng Lim ,  Jin-seung Sohn ,  Byung-kyu Lee

IPC: G11B5/82

CPC classification number: G11B5/82 ,  B82Y10/00 ,  G11B5/02 ,  G11B5/66 ,  G11B5/667 ,  G11B5/7325 ,  G11B5/743 ,  G11B5/746 ,  G11B5/855 ,  G11B2005/0005 ,  G11B2005/0029

Abstract: Provided is a patterned magnetic recording medium including a plurality of magnetic recording layers arranged at predetermined regular intervals on a substrate, wherein the magnetic recording layers are multi-layered and comprise a means of suppressing magnetic interaction between the magnetic recording layers. The magnetic recording layer includes a first ferromagnetic layer, the means of suppressing magnetic interaction, and a second ferromagnetic layer sequentially stacked, wherein the means of suppressing magnetic interaction is a soft magnetic layer.

Abstract translation: 提供了一种图案化的磁记录介质，其包括在基板上以预定的规则间隔布置的多个磁记录层，其中磁记录层是多层的并且包括抑制磁记录层之间的磁相互作用的手段。 磁记录层包括第一铁磁层，抑制磁相互作用的装置和依次层叠的第二铁磁层，其中抑制磁相互作用的手段是软磁性层。