公开(公告)号：US5880910A

公开(公告)日：1999-03-09

申请号：US821270

申请日：1997-03-20

申请人： Shigeru Shouji ,  Atsushi Toyoda

发明人： Shigeru Shouji ,  Atsushi Toyoda

IPC分类号： G11B5/39 ,  G11B5/55 ,  G11B5/596

CPC分类号： G11B5/3932 ,  G11B5/3903 ,  G11B5/3967 ,  G11B5/398 ,  G11B5/5526 ,  G11B5/59683

摘要： On a lower magnetic shield film, a lower gap film is formed on which a conductive lead film and a magnet film is laminated. The magnet film forms a bias permanent magnet film for generating a single magnetic domain of a magneto-resistance film. This lead film is trenched to the lower gap layer (20) to form a trapezoid trench and separated leads. A sensor unit having the magneto-resistance film is formed conformally to the trench and electrically connected to the separated leads. An upper gap is formed on the sensor unit (28), and an upper shield is formed on the upper gap.

摘要翻译： 在下部磁屏蔽膜上形成下部间隔膜，在其上层叠导电性引线膜和磁性膜。 磁体膜形成用于产生磁阻膜的单个磁畴的偏置永磁体膜。 该引线膜被沟槽到下间隙层（20）以形成梯形沟槽和分离的引线。 具有磁阻膜的传感器单元与沟槽保形地形成并电连接到分离的引线。 在传感器单元（28）上形成上部间隙，并且在上部间隙上形成上部屏蔽。

公开(公告)号：US5734536A

公开(公告)日：1998-03-31

申请号：US726392

申请日：1996-10-04

申请人： Shigeru Shouji ,  Atsushi Toyoda

发明人： Shigeru Shouji ,  Atsushi Toyoda

IPC分类号： G11B5/00 ,  G11B5/31 ,  G11B5/23 ,  G11B5/147

CPC分类号： G11B5/3116 ,  G11B5/3113 ,  G11B5/3163 ,  G11B2005/0026

摘要： A lower pole gradually increases its thickness in a section from the pole front end surface toward the depth direction. An upper pole gradually increases its thickness in a section from the pole front end surface toward the depth direction. The lower pole has a constriction at an area deeper than the gradually increasing section.

摘要翻译： 下极在从极前端面向深度方向的截面中逐渐增加其厚度。 上极部从极前端面向深度方向逐渐增大其厚度。 下极在比逐渐增加的部分更深的区域处具有收缩。

公开(公告)号：US5722157A

公开(公告)日：1998-03-03

申请号：US673667

申请日：1996-06-25

申请人： Shigeru Shouji ,  Atsushi Toyoda

发明人： Shigeru Shouji ,  Atsushi Toyoda

IPC分类号： G11B5/31 ,  G11B5/127 ,  G11B5/39

CPC分类号： G11B5/3967 ,  G11B5/1272 ,  G11B5/1278 ,  G11B5/39 ,  Y10T29/49044 ,  Y10T29/49046 ,  Y10T29/49048

摘要： In an induction- and MR-type composite magnetic head of the type that one of two shield films of an MR-type magnetic head serves as one of two cores of an induction-type magnetic head, conductive leads are thicker than an MR element so that steps are formed at the boundaries between an MR element sensitive region and the conductive leads. An upper gap layer has a constant thickness and has a recess 56 on its upper surface because of topographical transfer of the underlying steps. An upper shield--lower core layer has a downward convex at its lower surface, because of topographical transfer of the recess on the upper surface of the upper gap layer. However, the upper surface of the upper shield--lower core layer is flat and parallel to the MR element. Therefore, a write gap layer formed thereon is made flat and parallel to the MR element. Steps of the write gap can be removed and a record density can be increased.

摘要翻译： 在MR型磁头的两个屏蔽膜中的一个用作感应型磁头的两个芯之一的感应和MR型复合磁头中，导电线比MR元件厚， 该步骤形成在MR元件敏感区域和导电引线之间的边界处。 上间隙层具有恒定的厚度并且由于底层步骤的形貌转移而在其上表面上具有凹部56。 由于上间隙层的上表面上的凹槽的形貌转移，所以上下屏蔽芯层在其下表面具有向下凸起。 然而，上屏蔽 - 下芯层的上表面是平坦的并且平行于MR元件。 因此，形成在其上的写间隙层平坦并平行于MR元件。 可以移除写入间隙的步骤，并且可以增加记录密度。

公开(公告)号：US5978187A

公开(公告)日：1999-11-02

申请号：US556574

申请日：1995-11-13

申请人： Shigeru Shouji ,  Atsushi Toyoda

发明人： Shigeru Shouji ,  Atsushi Toyoda

IPC分类号： G11B5/02 ,  G11B5/23 ,  G11B5/31 ,  G11B5/147 ,  G11B5/187

CPC分类号： G11B5/3163 ,  G11B5/3116 ,  G11B5/313 ,  G11B5/02

摘要： The leading edge of a lower pole is constituted by a protruded central parallel portion, opposite end parallel portions, and slanted portions coupling the central parallel portion and the opposite end parallel portions. The width T.sub.wc of the central parallel portion is set to 10 to 25% of the total width T.sub.wa of the lower pole. The thickness P1' of the opposite end portion is set in the range from 3/1 or thicker to 3/2 or thinner than the thickness P1 of the central parallel portion.

摘要翻译： 下极的前缘由突出的中心平行部分，相对的端部平行部分和连接中心平行部分和相对端平行部分的倾斜部分构成。 中心平行部分的宽度Twc设定为下极总宽度Twa的10至25％。 相对端部的厚度P1'设定在3/1以上至3/2以下，或者比中央平行部的厚度P1更薄。

公开(公告)号：US5668686A

公开(公告)日：1997-09-16

申请号：US579928

申请日：1995-12-28

申请人： Shigeru Shouji ,  Atsushi Toyoda

发明人： Shigeru Shouji ,  Atsushi Toyoda

IPC分类号： G11B5/012 ,  G11B5/31 ,  G11B5/39 ,  G11B5/48 ,  G11B5/55 ,  G11B5/596

CPC分类号： G11B5/398 ,  G11B5/3903 ,  G11B5/3967 ,  G11B5/488 ,  G11B5/5526 ,  G11B5/59683 ,  G11B5/012 ,  G11B5/3113 ,  G11B5/3116 ,  G11B5/3163 ,  G11B5/3932 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/49048

摘要： A thin film magnetic head made of material having the magneto-resistance (MR) effect and its manufacturing method are provided. A lower shield layer for magnetically shielding an MR film is formed with a trench of a gull-wing shape having a flat bottom surface and opposite slanted surfaces formed on both sides of the bottom surface. The MR film is formed on the lower shield layer conformal to the gull-wing shape. The region of the MR film on the flat bottom surface forms an effective magnetic active region. A track center shift and the generation of a side-lobe in the off-track characteristic specific to an MR head can be suppressed and high density recording and reproducing of narrow tracks are possible.

摘要翻译： 提供由具有磁阻（MR）效应的材料制成的薄膜磁头及其制造方法。 用于磁屏蔽MR膜的下屏蔽层形成有具有扁平底表面的鸥翼形状的沟槽和形成在底表面的两侧上的相对的倾斜表面。 MR膜形成在与鸥翼形状一致的下屏蔽层上。 平坦的底面上的MR膜的区域形成有效的磁性活性区域。 可以抑制轨道中心偏移和在MR磁头特有的偏离磁道特性中产生旁瓣，并且可以实现窄轨迹的高密度记录和再现。

公开(公告)号：US6010753A

公开(公告)日：2000-01-04

申请号：US238998

申请日：1998-01-28

申请人： Shigeru Shouji ,  Atsushi Toyoda

发明人： Shigeru Shouji ,  Atsushi Toyoda

IPC分类号： G11B5/02 ,  G11B5/23 ,  G11B5/31 ,  C23C14/02 ,  C23C14/00

CPC分类号： G11B5/3163 ,  G11B5/3116 ,  G11B5/313 ,  G11B5/02

摘要： The leading edge of a lower pole is constituted by a protruded central parallel portion, opposite end parallel portions, and slanted portions coupling the central parallel portion and the opposite end parallel portions. The width T.sub.wc of the central parallel portion is set to 10 to 25% of the total width T.sub.wa of the lower pole. The thickness P1' of the opposite end portion is set in the range from 1/3 or thicker to 2/3 or thinner than the thickness P19 of the central parallel portion.

摘要翻译： 下极的前缘由突出的中心平行部分，相对的端部平行部分和连接中心平行部分和相对端平行部分的倾斜部分构成。 中心平行部分的宽度Twc设定为下极总宽度Twa的10至25％。 相对端部的厚度P1'设定在+ E，fra 1/3 + EE或较厚至+ E，fra 2/3 + EE或比中央平行部分的厚度P19更薄的范围内。

公开(公告)号：US5926348A

公开(公告)日：1999-07-20

申请号：US919032

申请日：1997-08-27

申请人： Shigeru Shouji ,  Atsushi Toyoda

发明人： Shigeru Shouji ,  Atsushi Toyoda

IPC分类号： G11B5/31 ,  G11B5/39 ,  G11B5/55

CPC分类号： G11B5/3932 ,  G11B5/3903 ,  G11B5/398 ,  G11B5/3163 ,  G11B5/3967 ,  G11B5/5526

摘要： A magneto-resistance type magnetic head having: a base; a longitudinal bias portion, formed over the base and having a first upper flat surface and a first slanted portion, for generating a longitudinal bias magnetic field; a lead portion laminated directly on the longitudinal bias portion so as to cover the first upper flat portion and to expose the first slanted portion of the longitudinal bias portion, wherein the lead portion is made of non-magnetic material and has a second upper flat surface and a second slanted portion, and wherein the first and second slanted portions collectively serve as a slanted surface; and a magneto-resistance material layer formed over the longitudinal bias portion and the lead portion, wherein the magneto-resistance material layer directly contacts an upper surface of the base and magnetically couples with the exposed longitudinal bias portion through the slanted surface of the longitudinal bias portion, wherein the magneto-resistance material layer is terminated on the slanted surface.

摘要翻译： 一种磁阻型磁头，具有：基座; 纵向偏置部分，形成在基座上并具有第一上平坦表面和第一倾斜部分，用于产生纵向偏置磁场; 引导部分，其直接层压在所述纵向偏置部分上以覆盖所述第一上部平坦部分并且暴露所述纵向偏置部分的所述第一倾斜部分，其中所述引线部分由非磁性材料制成并且具有第二上部平坦表面 和第二倾斜部分，并且其中第一和第二倾斜部分共同用作倾斜表面; 以及形成在所述纵向偏置部分和所述引线部分上的磁阻材料层，其中所述磁阻材料层直接接触所述基底的上表面并且通过所述纵向偏置的倾斜表面与暴露的纵向偏置部分磁耦合 部分，其中所述磁阻材料层在所述倾斜表面上终止。

公开(公告)号：US5559653A

公开(公告)日：1996-09-24

申请号：US349163

申请日：1994-12-02

申请人： Shigeru Shouji ,  Atsushi Toyoda

发明人： Shigeru Shouji ,  Atsushi Toyoda

IPC分类号： G11B5/31 ,  G11B5/147 ,  G11B5/17 ,  G11B5/187

CPC分类号： G11B5/3163 ,  G11B5/3116 ,  G11B5/3113 ,  G11B5/3153

摘要： A thin film magnetic head includes a lower core portion provided on a substrate and having a pole portion, a magnetic gap layer provided on the lower core portion, an insulating layer provided on the magnetic gap layer, conduction coils provided in the insulating layer, an upper core portion provided on the insulating layer, and an overcoat layer provided on the upper core portion. The upper core portion has a pole portion of a reduced width and a non-pole portion having a top-forming portion and an inclined section-forming portion formed on an inclined section of the insulating layer. The inclined section-forming section is made of a plurality of layers and a core angle of an uppermost layer of the plurality of layers of the non-pole portion is set at an angle which is 120 degrees or larger and is smaller than about 180 degrees and a core angle of a lower layer or layers of the plurality of layers of the non-pole portion is set at an angle which is smaller than the core angle of the uppermost layer and is larger than about 60 degrees. In one aspect of the invention, a foremost end portion of the lower layer of the inclined section-forming portion is located rearwardly of a foremost end portion of the the uppermost layer.

摘要翻译： 薄膜磁头包括设置在基板上的下芯部，具有极部，设置在下芯部上的磁隙层，设置在磁隙层上的绝缘层，设置在绝缘层中的导电线圈， 设置在绝缘层上的上芯部和设置在上芯部上的外涂层。 上芯部具有减小的宽度的极部分和具有形成在绝缘层的倾斜部分上的顶部形成部分和倾斜部分形成部分的非极部分。 倾斜部形成部由多层构成，非极部的多层的最上层的芯角设定为120度以上且小于约180度的角度 并且非极部分的多层的下层或多层的芯角设定为小于最上层的芯角度并且大于约60度的角度。 在本发明的一个方面，倾斜部分形成部分的下层的最前端部位于最上层的最前端部的后方。

公开(公告)号：US5943763A

公开(公告)日：1999-08-31

申请号：US847662

申请日：1997-04-22

申请人： Shigeru Shouji ,  Atsushi Toyoda

发明人： Shigeru Shouji ,  Atsushi Toyoda

IPC分类号： G11B5/012 ,  G11B5/31 ,  G11B5/39 ,  G11B5/48 ,  G11B5/55 ,  G11B5/596

CPC分类号： G11B5/398 ,  G11B5/3903 ,  G11B5/3967 ,  G11B5/488 ,  G11B5/5526 ,  G11B5/59683 ,  G11B5/012 ,  G11B5/3113 ,  G11B5/3116 ,  G11B5/3163 ,  G11B5/3932 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/49048

摘要： A thin film magnetic head made of material having the magneto-resistance (MR) effect and its manufacturing method are provided. A lower shield layer for magnetically shielding an MR film is formed with a trench of a gull-wing shape having a flat bottom surface and opposite slanted surfaces formed on both sides of the bottom surface. The MR film is formed on the lower shield layer conformal to the gull-wing shape. The region of the MR film on the flat bottom surface forms an effective magnetic active region. A track center shift and the generation of a side-lobe in the off-track characteristic specific to an MR head can be suppressed and high density recording and reproducing of narrow tracks are possible.

摘要翻译： 提供由具有磁阻（MR）效应的材料制成的薄膜磁头及其制造方法。 用于磁屏蔽MR膜的下屏蔽层形成有具有扁平底表面的鸥翼形状的沟槽和形成在底表面的两侧上的相对的倾斜表面。 MR膜形成在与鸥翼形状一致的下屏蔽层上。 平坦的底面上的MR膜的区域形成有效的磁性活性区域。 可以抑制轨道中心偏移和在MR磁头特有的偏离磁道特性中产生旁瓣，并且可以实现窄轨迹的高密度记录和再现。

公开(公告)号：US5907459A

公开(公告)日：1999-05-25

申请号：US12051

申请日：1998-01-22

申请人： Shigeru Shouji ,  Atsushi Toyoda

发明人： Shigeru Shouji ,  Atsushi Toyoda

IPC分类号： G11B5/31 ,  G11B5/39 ,  G11B5/40 ,  G11B5/187

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/3903 ,  G11B5/3967 ,  G11B2005/3996 ,  G11B5/313 ,  G11B5/40 ,  Y10T29/49044

摘要： A lower shield has an area smaller than an upper shield. A lead is constituted of a thin lead portion and a thick lead portion, the thin lead portion being formed in a reproduction gap between the upper and lower magnetic shield layers and the thick lead portion being formed spaced apart from the end of the lower magnetic shield layer in the depth direction and extending downward in the thickness direction at a level lower than the thin lead portion. The upper surface of the lead is not formed with a step. The thin and thick lead portions are connected via a contact hole formed through a lower reproduction gap layer.

摘要翻译： 下屏蔽的面积小于上屏蔽。 引线由薄引线部分和厚引线部分构成，薄引线部分形成在上磁屏蔽层和下磁屏蔽层之间的再现间隙中，并且厚引线部分形成为与下磁屏蔽的端部间隔开 并且在厚度方向上向下延伸到低于薄引线部分的水平。 引线的上表面不形成台阶。 薄而厚的引线部分经由通过下再现间隙层形成的接触孔连接。