会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 5. 发明申请
    • Manufacturing method of thin-film magnetic head and thin-film magnetic head
    • 薄膜磁头和薄膜磁头的制造方法
    • US20060067010A1
    • 2006-03-30
    • US10971113
    • 2004-10-25
    • Takeo KagamiTakayasu KanayaNoriaki KasaharaKazuki Sato
    • Takeo KagamiTakayasu KanayaNoriaki KasaharaKazuki Sato
    • G11B5/33G11B5/127
    • G11B5/332Y10T29/49043Y10T29/49046Y10T29/49048Y10T29/49052
    • A manufacturing method of a thin-film magnetic head includes a step of depositing an MR multi-layered film on a lower electrode layer, a step of patterning the deposited MR multi-layered film to define a track width, a step of forming a layer containing at least first insulation layer at both track-width direction sides of the patterned MR multi-layered film, a step of depositing a first additional upper metal layer on the patterned MR multi-layered film and on the layer containing at least first insulation layer, a step of patterning the first additional upper metal layer and the MR multi-layered film to define a length in a direction perpendicular to the track-width direction so as to obtain an MR multi-layered structure, a step of forming a second insulation layer to surround the first additional upper metal layer and the MR multi-layered structure, a step of removing by etching the second insulation layer on the first additional upper metal layer formed on the MR multi-layered structure, a step of thereafter, forming a second additional upper metal layer on the first additional upper metal layer and on the second insulation layer, and a step of forming an upper electrode layer on the second additional upper metal layer.
    • 薄膜磁头的制造方法包括在下电极层上沉积MR多层膜的步骤,对沉积的MR多层膜进行图案化以限定磁道宽度的步骤,形成层的步骤 在图案化MR多层膜的两个轨道宽度方向侧上至少含有第一绝缘层,在图案化MR多层膜上沉积第一附加上金属层和在至少包含第一绝缘层的层上沉积步骤 图案化第一附加上金属层和MR多层膜以在垂直于轨道宽度方向的方向上限定长度以获得MR多层结构的步骤,形成第二绝缘体的步骤 层以围绕第一附加上金属层和MR多层结构,通过蚀刻在形成在MR多层结构上的第一附加上金属层上的第二绝缘层去除步骤 其次,在第一附加上金属层和第二绝缘层上形成第二另外的上金属层,以及在第二另外的上金属层上形成上电极层的步骤。
    • 6. 发明申请
    • Thin-film magnetic head comprising bias layers having a large length in track width direction
    • 薄膜磁头包括在磁道宽度方向上具有大长度的偏置层
    • US20050195536A1
    • 2005-09-08
    • US11066763
    • 2005-02-28
    • Takeo KagamiNoriaki KasaharaKazuki SatoTakayasu Kanaya
    • Takeo KagamiNoriaki KasaharaKazuki SatoTakayasu Kanaya
    • G11B5/39G11B5/127G11B5/33
    • G11B5/398B82Y25/00G01R33/093G01R33/098G11B5/3932G11B2005/0008
    • The thin-film magnetic head of the present invention comprises an MR sensor wherein a first ferromagnetic layer in which a magnetization direction is fixed with respect to external magnetic fields, a non-magnetic intermediate layer, and a second ferromagnetic layer in which a magnetization direction changes with respect to the external magnetic fields are stacked, and wherein a sense current flows substantially parallel to the stacked layer surface. The thin-film magnetic head comprises a pair of bias layers for exerting a bias magnetic field upon the MR sensor; the bias layers extending substantially symmetrically from two sides of the MR sensor in a direction of track width of a recording medium, each bias layer being connected with the MR sensor over a length which is substantially the same as the MR sensor in a direction perpendicular to the air bearing surface; and each bias layer having a shape which is contained within an imaginary rectangle which has its long sides along the air bearing surface in the direction of the track width of the recording medium and its short sides in the direction perpendicular to the air bearing surface and which contacts the short side of the imaginary rectangle which is opposite the short side which contacts the MR sensor. The thin-film magnetic head further comprises a pair of lead layers for supplying the sense current to the MR sensor each extending from the air bearing surface to cover at least a portion of each of the bias layers.
    • 本发明的薄膜磁头包括MR传感器,其中磁化方向相对于外部磁场固定的第一铁磁层,非磁性中间层和第二铁磁层,其中磁化方向 相对于外部磁场的变化被堆叠,并且其中感测电流基本上平行于堆叠的层表面流动。 薄膜磁头包括用于在MR传感器上施加偏置磁场的一对偏置层; 偏置层在MR传感器的两侧沿着记录介质的磁道宽度的方向基本上对称地延伸,每个偏置层在与MR传感器垂直的方向上与MR传感器基本相同的长度上与MR传感器连接 空气轴承表面; 并且每个偏置层具有包含在假想矩形内的形状,该假想矩形具有沿着记录介质的轨道宽度的空气轴承表面的长边,并且在垂直于空气轴承表面的方向上具有短边, 接触与MR传感器接触的短边相反的假想矩形的短边。 薄膜磁头还包括一对引导层,用于向MR传感器提供感测电流,每个引导层从空气支承表面延伸以覆盖每个偏置层的至少一部分。
    • 9. 发明授权
    • Thin-film magnetic head and manufacturing method thereof
    • 薄膜磁头及其制造方法
    • US07768747B2
    • 2010-08-03
    • US11735730
    • 2007-04-16
    • Takeo KagamiTakayasu Kanaya
    • Takeo KagamiTakayasu Kanaya
    • G11B5/33G11B5/127H04R31/00
    • G11B5/398B82Y25/00G01R33/093G11B5/11G11B5/3163G11B5/3912Y10T29/49046
    • A thin-film magnetic head includes a lower magnetic shield layer, an MR multi-layered structure formed on the lower magnetic shield layer so that current flows in a direction perpendicular to surfaces of laminated layers, and an upper magnetic shield layer formed on the MR multi-layered structure. The lower magnetic shield layer consists of a first soft magnetic layer and a second soft magnetic layer laminated on and magnetically connected with the first soft magnetic layer. A part of an upper surface of the first soft magnetic layer outside both side ends in a track-width direction of the MR multi-layered structure is located lower in height than an upper surface within a region where the MR multi-layered structure is formed, of the lower magnetic shield layer. The second soft magnetic layer is formed outside both side ends in a track-width direction of the MR multi-layered structure.
    • 薄膜磁头包括下磁屏蔽层,形成在下磁屏蔽层上的MR多层结构,使得电流在垂直于层压层表面的方向上流动,并且形成在MR上的上磁屏蔽层 多层结构。 下磁屏蔽层由层压在第一软磁层上并与第一软磁层磁连接的第一软磁层和第二软磁层组成。 在MR多层结构的轨道宽度方向上的两侧端部外侧的第一软磁性层的上表面的一部分位于比形成有MR多层结构的区域内的上表面的高度 的下磁屏蔽层。 第二软磁性层形成在MR多层结构的轨道宽度方向的两侧端的外侧。