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    • 21. 发明申请
    • Magnetic head and method for manufacturing the same
    • 磁头及其制造方法
    • US20050105212A1
    • 2005-05-19
    • US10984650
    • 2004-11-09
    • Kiyoshi Sato
    • Kiyoshi Sato
    • G11B5/31G11B5/147G11B5/265
    • G11B5/2657
    • A magnetic head includes a plurality of coil elements disposed in a space defined by a lower core layer, a pole layer, and a back gap layer. A coil insulator fills the space so as to cover the coil elements. The top face of the pole layer, the top face of the coil insulator, the top faces of the coil elements, and the top face of the back gap layer form a planarized plane. The coil elements are disposed on a recess formed on the lower core layer. The bottom faces of the coil elements are disposed at substantially the same height as the top face of the lower core layer. The top faces of the coil elements lie in the planarized plane.
    • 磁头包括设置在由下芯层,极层和后间隙层限定的空间中的多个线圈元件。 线圈绝缘体填充空间以覆盖线圈元件。 极层的顶面,线圈绝缘子的顶面,线圈元件的顶面和后间隙层的顶面形成平面化平面。 线圈元件设置在形成在下芯层上的凹部上。 线圈元件的底面设置在与下芯层的顶面基本相同的高度。 线圈元件的顶面位于平面平面内。
    • 23. 发明授权
    • Method of fabricating the thin film magnetic head
    • 制造薄膜磁头的方法
    • US06662433B1
    • 2003-12-16
    • US09709767
    • 2000-11-10
    • Kiyoshi Sato
    • Kiyoshi Sato
    • G11B5127
    • B82Y25/00B82Y10/00G11B5/313G11B5/3967G11B2005/3996Y10T29/49039Y10T29/49043Y10T29/49044Y10T29/49046Y10T29/49048Y10T29/4905Y10T29/49071
    • A thin film magnetic head includes a lower shielding layer composed of a magnetic material; a nonmagnetic MR gap layer on the lower shielding layer; a magnetoresistive element layer in the MR gap layer facing a recording medium; a lower core layer composed of a magnetic material on the MR gap layer; an upper core layer composed of a magnetic material being opposed to the lower core layer with a nonmagnetic gap layer therebetween at the surface facing the recording medium; and a coil layer for inducing a recording magnetic field in the lower core layer and the upper core layer. Alternatively, a thin film magnetic head further includes a first magnetic material layer in the rear of the lower shielding layer, magnetically separated from the lower shielding layer. A method of fabricating the same is also disclosed.
    • 薄膜磁头包括由磁性材料构成的下屏蔽层; 在下屏蔽层上的非磁性MR间隙层; 面向记录介质的MR间隙层中的磁阻元件层; 在MR间隙层上由磁性材料构成的下芯层; 在与记录介质相对的表面上具有与所述下芯层相对的磁性材料构成的上芯层,其间具有非磁性间隙层; 以及用于在下芯层和上芯层中诱导记录磁场的线圈层。 或者,薄膜磁头还包括在下屏蔽层的后部的与下屏蔽层磁分离的第一磁性材料层。 还公开了一种制造该方法的方法。
    • 24. 发明授权
    • Method of producing thin film magnetic head
    • 制造薄膜磁头的方法
    • US06604274B1
    • 2003-08-12
    • US09593678
    • 2000-06-14
    • Kiyoshi Sato
    • Kiyoshi Sato
    • G11B5127
    • G11B5/313G11B5/3143Y10T29/49043Y10T29/49044
    • A method for fabricating a thin film magnetic head is disclosed. A nonmagnetic gap layer is formed on a lower gap layer. A first insulating layer is formed on a first part of the nonmagnetic gap layer. A second part of the nonmagnetic gap layer not covered with the first insulating layer is a magnetic gap formation section, which is part of a tip region. A coil layer and a second insulating layer are formed on the first insulating layer. A first underlying layer composed of a magnetic material extending from the nonmagnetic gap layer inside the tip region is formed over the second insulating layer. A first magnetic material layer is formed on the first underlying layer outside the tip region. The first underlying layer is removed from inside the tip region. A nonmagnetic material layer extending from the nonmagnetic gap layer is formed over the first magnetic layer.
    • 公开了一种用于制造薄膜磁头的方法。 在下间隙层上形成非磁性间隙层。 第一绝缘层形成在非磁性间隙层的第一部分上。 未被第一绝缘层覆盖的非磁性间隙层的第二部分是作为尖端区域的一部分的磁隙形成部。 在第一绝缘层上形成线圈层和第二绝缘层。 在第二绝缘层上形成由从末端区域内的非磁性间隙层延伸的磁性材料构成的第一下层。 第一磁性材料层形成在尖端区域外侧的第一底层上。 第一个底层从尖端区域内部移除。 在第一磁性层上形成从非磁性间隙层延伸的非磁性材料层。
    • 26. 发明授权
    • Planar light-emitting display panel
    • 平面发光显示面板
    • US06474825B1
    • 2002-11-05
    • US09679529
    • 2000-10-06
    • Masashi SaitoKiyoshi Sato
    • Masashi SaitoKiyoshi Sato
    • F21V704
    • G02B6/0086
    • Disclosed is a planar light-emitting display panel device of the edge-lighting type used for demonstration of an image of painting, photograph or commercial product for the purpose of decoration or advertisement, in which the image-bearing transparency can be easily replaced with another. The device comprises, as an assembly: (a) a rectangular planar light emitter having a rectangular light-conductive board; (b) at least one elongated light source held in contact with one of the edge surfaces of the light-conductive board; (c) a rectangular frame consisting of four frame branches, three of which are rigidly connected together to hold the planar light emitter and the elongated light source therein and the fourth of which is demountable, each having an inversely L-shaped cross section consisting of a top flat and a side flat so as to define a grooved space by the lower surface of the top flat and the upper surface of the planar light emitter; (d) an image-bearing transparency; and (e) a folder consisting of two flaps made from a transparent plastic sheet, in which the image-bearing transparency is held by the folder between the two flaps and the transparency-holding folder is inserted into the grooved spaces in a withdrawable fashion.
    • 公开了用于展示用于装饰或广告的绘画,照片或商业产品的图像的边缘照明型平面发光显示面板装置,其中图像承载透明度可以容易地被替换为另一种 。 该装置包括:(a)具有矩形导光板的矩形平面光发射器, (b)保持与所述导光板的一个边缘表面接触的至少一个细长光源; (c)由四个框架分支组成的矩形框架,其中三个刚性连接在一起以将平面光发射器和细长光源保持在其中,其中第四个是可拆卸的,每个具有由L形形成的横截面, 顶部平面和侧面平坦,以便通过顶部平面的下表面和平面光发射器的上表面限定开槽空间; (d)具有影像的透明度; 和(e)由透明塑料片制成的两个折片组成的折叠物,其中图像承载透明体由两个折片和透明体保持夹之间的折叠夹持件以抽出的方式插入到带槽的空间中。
    • 27. 发明授权
    • Thin film magnetic head having very narrow track width and manufacturing method for the same
    • 具有非常窄轨道宽度的薄膜磁头及其制造方法
    • US06466403B1
    • 2002-10-15
    • US09532750
    • 2000-03-22
    • Kiyoshi SatoToshihiro KuriyamaToshinori Watanabe
    • Kiyoshi SatoToshihiro KuriyamaToshinori Watanabe
    • G11B5147
    • G11B5/3967G11B5/3116G11B5/313
    • The present invention provides a thin film magnetic head having a recording track width of 1 &mgr;m or less, and a method for manufacturing the thin film magnetic head having a recording track width of 1 &mgr;m or less. In the thin film magnetic head, an upper core layer and a lower core layer extend from a back region toward a magnetic pole tip region, and are exposed at a medium opposing surface, and a gap layer is provided, in the magnetic pole tip region, between the upper core layer and the lower core layer. An insulation layer is deposited on the lower core layer, and a groove that extends from the medium opposing surface toward the back region is provided in the magnetic pole tip region of the insulation layer. A lower magnetic pole layer, the gap layer, and an upper magnetic pole layer are deposited in the groove. The lower magnetic pole layer is joined to the lower core layer, while the upper magnetic pole layer is joined to the upper core layer.
    • 本发明提供一种具有1um或更小的记录磁道宽度的薄膜磁头,以及一种具有1μm或更小的记录磁道宽度的薄膜磁头的制造方法。 在薄膜磁头中,上芯层和下芯层从背部区域朝向磁极尖端区域延伸,并且在介质相对表面处露出,并且在磁极尖端区域中设置间隙层 ,在上芯层和下芯层之间。 绝缘层沉积在下芯层上,并且在绝缘层的磁极尖端区域中设置从介质相对表面朝向后部区域延伸的槽。 凹槽中沉积下磁极层,间隙层和上磁极层。 下磁极层接合到下芯层,而上磁极层与上芯层接合。
    • 28. 发明授权
    • Thin-film magnetic head having improved accuracy in setting gap depth position
    • 薄膜磁头设置间隙深度位置的精度提高
    • US06456461B1
    • 2002-09-24
    • US09532941
    • 2000-03-22
    • Kiyoshi Sato
    • Kiyoshi Sato
    • G11B5147
    • G11B5/3967G11B5/3116G11B5/313G11B5/3133
    • A thin-film magnetic head includes an upper core layer and a lower core layer, extending from a back region to a magnetic pole region, and ends thereof being disposed at a medium-opposing face; a gap layer disposed in the magnetic pole region between the upper core layer and the lower core layer; a groove formed in an insulating layer formed on the lower core layer, the groove extending from the medium-opposing face in the magnetic pole region to the back region; and a lower magnetic pole layer, the gap layer, and an upper magnetic pole layer in the groove. In the thin-film magnetic head, the lower magnetic pole layer and the lower core layer are connected to each other, the upper magnetic pole layer and the upper core layer are connected to each other, and the groove comprises a groove body portion which has a cross-sectional size approximately equivalent to that of an opening of the groove at the medium-opposing face and extends in the magnetic pole region, and a groove-continuing portion which continues from the groove body portion and extends in the back region.
    • 薄膜磁头包括从背部区域延伸到磁极区域的上芯层和下芯层,并且其端部设置在介质相对面上; 间隔层,设置在上芯层和下芯层之间的磁极区域中; 形成在形成在下芯层上的绝缘层中的槽,所述槽从磁极区域中的介质相对面延伸到后部区域; 以及沟槽中的下磁极层,间隙层和上磁极层。 在薄膜磁头中,下磁极层和下芯层彼此连接,上磁极层和上芯层彼此连接,并且槽包括槽主体部分,其具有 与介质相对面的槽的开口大致相等并且在磁极区域中延伸的横截面尺寸,以及从槽体部分延伸并在后部区域延伸的槽连续部分。
    • 29. 发明授权
    • Thin film magnetic head
    • 薄膜磁头
    • US06301075B1
    • 2001-10-09
    • US09207543
    • 1998-12-08
    • Kiyoshi Sato
    • Kiyoshi Sato
    • G11B5147
    • G11B5/313G11B5/3143Y10T29/49043Y10T29/49044
    • A thin film magnetic head includes a first magnetic core layer and a second magnetic core layer and a coil layer provided between the first and second core layers for inducing a recording magnetic field to both core layers. At least one of the first and second core layers is formed as a laminate including a nonmagnetic material layer interposed between magnetic material layers. The nonmagnetic material layer is exposed between the first and second core layers at the surface facing a recording medium, and a magnetic gap is formed by the nonmagnetic material layer. A method of fabricating such a thin film magnetic head is also disclosed.
    • 薄膜磁头包括第一磁芯层和第二磁芯层,以及设置在第一和第二芯层之间的线圈层,用于向两个芯层引入记录磁场。 第一和第二芯层中的至少一个形成为包括介于磁性材料层之间的非磁性材料层的层压体。 非磁性材料层在面向记录介质的表面处在第一和第二芯层之间暴露,并且由非磁性材料层形成磁隙。 还公开了一种制造这种薄膜磁头的方法。