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公开(公告)号：US20170270954A1
公开(公告)日：2017-09-21
申请号：US15074071
申请日：2016-03-18
申请人： TDK Corporation
IPC分类号： G11B5/39
CPC分类号： G11B5/3912 , G11B5/39 , G11B5/3906 , G11B5/3932
摘要： A magnetic head includes a magneto-resistance effect element in the form of a multilayer film, a pair of shields between which the magneto-resistance effect element is interposed in the lamination direction of the layers of the magneto-resistance effect element and each functioning as an electrode, a pair of side shields with one of said side shields on each side of the magneto-resistance effect element in the direction perpendicular to the lamination direction of the magneto-resistance effect element interposed between the pair of shields, the side shields magnetically coupled to either of the pair of shields, and an anisotropy-application layer disposed adjacent to the shield magnetically coupled to the pair of side shields. The pair of shields, the magneto-resistance effect element, and the pair of side shields are exposed on the air bearing surface facing a recording medium. The anisotropy-application layer is not exposed on the air bearing surface and is provided at a position away from the air bearing surface.
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公开(公告)号：US20170256276A1
公开(公告)日：2017-09-07
申请号：US15059383
申请日：2016-03-03
申请人： TDK Corporation
发明人： Tetsuya HIRAKI , Minoru OTA , Hisayoshi WATANABE , Kenzo MAKINO , Hideyuki UKITA
CPC分类号： G11B5/3912 , G11B5/112 , G11B5/3163 , G11B5/3909 , G11B5/3951 , G11B5/3977
摘要： A multi reader head has a plurality of readers that are laminated via a gap layer(s), and each of the readers has a structure in which a current-perpendicular-to-plane (CPP) type of magneto-resistive effect element, where a current flows along the lamination direction, is interposed between a pair of shields that function as an electrode, respectively, from both sides in the lamination direction. The shields that are opposed from each other via the gap layer of the readers that are adjacent in the lamination direction by a distance that is not constant, but include a portion with a greater distance between the shields and another portion with a smaller distance between the shields are included. The portion with a greater distance between the shields is situated at a position away from the center on an air bearing surface opposing to a recording medium in the magneto-resistive effect element.
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3.发明申请公开(公告)号：US20210343573A1
公开(公告)日：2021-11-04
申请号：US17224480
申请日：2021-04-07
申请人： TDK CORPORATION
发明人： Hisayoshi WATANABE , Yasuhiro ITO , Takahiro IMAI
IPC分类号： H01L21/683 , H01L21/673 , H01L21/687
摘要： An electronic component includes a body and one or more protrusions. The body includes a first side surface, a second side surface opposite to the first side surface, and a first principal surface. The one or more protrusions are provided on at least one of the first side surface, the second side surface, or the first principal surface.
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公开(公告)号：US20180005648A1
公开(公告)日：2018-01-04
申请号：US15197342
申请日：2016-06-29
申请人： TDK CORPORATION
CPC分类号： G11B5/1272 , G11B5/012 , G11B5/112 , G11B5/1278 , G11B5/3116 , G11B5/315 , G11B5/3163
摘要： This method of manufacturing a perpendicular magnetic recording head includes: forming a water-soluble resin film on a base; forming a first resist pattern having an opening on the water-soluble resin film; selectively dissolving the water-soluble resin film exposed at a bottom of the opening with a developer to expose a part of a surface of the base; forming a non-magnetic oxide film to cover the opening and the exposed part of the surface of the base; forming a second resist pattern to fill the opening covered with the non-magnetic oxide film and then removing the first resist pattern and the non-magnetic oxide film; forming a first side shield and a second side shield on the base to allow them to face each other with the second resist pattern therebetween; and forming a magnetic pole between the first and the second side shields after removal of the second resist pattern.
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公开(公告)号：US20170236538A1
公开(公告)日：2017-08-17
申请号：US15044559
申请日：2016-02-16
申请人： TDK Corporation
发明人： Hisayoshi WATANABE , Naomichi DEGAWA , Satoshi MIURA , Masachika HASHINO , Tetsuya HIRAKI , Hidekazu KOJIMA
IPC分类号： G11B5/39
CPC分类号： G11B5/3912 , G11B2005/3996
摘要： A magneto-resistive effect element (MR element) has an upper shield that is magnetized in a cross track direction, a lower shield that is positioned at an interval relative to the upper shield in a down track direction, and a multilayer film that is positioned between the upper shield and the lower shield and that faces an air bearing surface (ABS). The multilayer film has a free layer where its magnetization direction fluctuates relative to an external magnetic field, a pinned layer where its magnetization direction is pinned against the external magnetic field, a nonmagnetic spacer layer that is positioned between the free layer and the pinned layer, and an insulating layer that is positioned at a back side of the free layer viewed from the ABS. The MR element further has a pair of side shields that are positioned at both sides of the free layer and the insulating layer in a cross track direction. The side shields contact the upper shield on the sides of the free layer and the insulating layer in the cross track direction.
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公开(公告)号：US20150140685A1
公开(公告)日：2015-05-21
申请号：US14082249
申请日：2013-11-18
申请人： TDK Corporation
CPC分类号： H01L21/0274 , G03F1/00 , G03F7/203 , G03F7/70633 , G11B5/1278 , G11B5/3163 , G11B5/3958 , G11B5/3967 , G11B5/4886 , H01L21/312
摘要： A method for manufacturing a pattern multilayer body that has a plurality of pattern layers, and where a pattern is formed in each pattern layer, includes a step of forming an overlay pattern within an overlay pattern formation region, and in the step of forming the overlay pattern, a photoresist film is formed, and after a photoresist film is exposed via a main mask, a resist pattern is formed by exposing a sub mask(s). The main mask has a pattern light-shielding part that is commonly used for forming a pattern in each pattern layer, and each main light-shielding part for forming each overlay patter; and a sub mask has an opening part that is exposable to an unexposed region(s) within an overlay pattern formation region other than an unexposed region(s) on the photoresist film, which has been light-shielded by the main light-shielding part for forming a corresponding overlay pattern. This enables forming an overlay pattern that is high in position gap measurement accuracy in a direction orthogonal to the lamination direction when manufacturing a pattern multilayer body.
摘要翻译： 一种用于制造具有多个图案层并且在每个图案层中形成图案的图案多层体的方法包括在覆盖图案形成区域内形成覆盖图案的步骤，并且在形成覆盖层的步骤中 形成光致抗蚀剂膜，并且在通过主掩模曝光光致抗蚀剂膜之后，通过暴露子掩模形成抗蚀剂图案。 主掩模具有通常用于在每个图案层中形成图案的图案遮光部分和用于形成每个覆盖图案的每个主遮光部分; 并且子掩模具有可暴露于除光致抗蚀剂膜上的未曝光区域之外的覆盖图案形成区域内的未曝光区域的开口部分，其被主遮光部分遮光 用于形成对应的覆盖图案。 由此，能够在制造图案层叠体时形成与层叠方向正交的方向上的位置间隙测定精度高的覆盖图形。
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