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    • 4. 发明授权
    • Transducer for converting a signal to read out data and method for
forming the same
    • 用于转换信号以读出数据的传感器及其形成方法
    • US4910394A
    • 1990-03-20
    • US152391
    • 1988-02-04
    • Toshihiko Ohta
    • Toshihiko Ohta
    • B42D15/10G06K19/07G06K19/077G11B5/31
    • G06K19/07779G06K19/0723G06K19/077G06K19/07749G06K19/07783G06K19/07784
    • A transducer for an IC card having a built-in semiconductor memory performs signal conversion by magnetic coupling to read out data. This transducer comprises a substrate, which has a first section of a predetermined thickness, and a second section, thinner than and formed in contact with the first section. A pair of first thin-film spiral coils, both would in the same direction, are formed on the first section of the substrate, and thin-film connection pads, respectively coupled to the first spiral coils, are formed on the second section. Then, an insulating film is deposited on the substrate and the first spiral coil. Through holes are made in the insulating film, thus exposing the center portion of the first spiral coil. A pair of second thin-film spiral coils, both also would in the same direction, are formed on the insulating film such that they are coupled to the first spiral coils. An anisotropic conductive film, for supplying a signal from the memory, is coupled to the pads by means of the through holes.
    • 用于具有内置半导体存储器的IC卡的换能器通过磁耦合执行信号转换以读出数据。 该换能器包括具有预定厚度的第一部分的基底和比第一部分更薄并且形成为与第一部分接触的第二部分。 在基板的第一部分上形成一对第一薄膜螺旋线圈,两者都将沿相同的方向,并且分别耦合到第一螺旋线圈的薄膜连接焊盘形成在第二部分上。 然后,在基板和第一螺旋线圈上沉积绝缘膜。 在绝缘膜中形成通孔,从而露出第一螺旋线圈的中心部分。 一对第二薄膜螺旋线圈也将沿相同的方向形成在绝缘膜上,使得它们耦合到第一螺旋线圈。 用于从存储器提供信号的各向异性导电膜通过通孔耦合到焊盘。
    • 10. 发明授权
    • Thin-film electromagnetic transducer
    • 薄膜电磁换能器
    • US4825056A
    • 1989-04-25
    • US932521
    • 1986-11-20
    • Toshihiko OhtaFumio Izawa
    • Toshihiko OhtaFumio Izawa
    • G06K7/08G06K19/077G06K19/06
    • G06K7/10336G06K19/06206G06K19/07749
    • A thin-film type electromagnetic transducer formed on a nonmagnetic substrate by a thin-film forming process. The transducer includes a magnetic core formed on the substrate by the thin-film forming process, and a conductor coil formed on the substrate by the thin-film forming process, so as to be wound around the core. The core is shaped so that a leakage flux generated along the plane of the substrate is greater than that generated in a direction intersecting with the plane of the substrate, the leakage fluxes being generated from the core when a current is supplied to the coil. In a method for transferring signals from the thin-film type electromagnetic transducer described above, a magnetic head is located so as to face that region of the core of the transducer where the maximum leakage flux is generated. The magnetic head has a magnetic gap such that the direction of a leakage flux generated in the gap is coincident with that of the maximum leakage flux from the core, and whereby magnetic signals are transferred between the magnetic head and the maximum-leakage-flux generating region of the core.
    • 通过薄膜形成工艺形成在非磁性基底上的薄膜型电磁换能器。 换能器包括通过薄膜形成工艺在基板上形成的磁芯,以及通过薄膜形成工艺在基板上形成的导体线圈,以缠绕在芯上。 芯的形状使得沿着基板的平面产生的漏磁通大于在与基板的平面交叉的方向上产生的漏磁通,当电流被提供给线圈时,漏磁通是从磁芯产生的。 在用于从上述薄膜型电磁换能器传送信号的方法中,磁头被定位成面对产生最大漏磁通的换能器的芯的区域。 磁头具有磁隙,使得在间隙中产生的漏磁通的方向与来自芯的最大漏磁通的方向一致,从而磁信号在磁头和最大泄漏磁通产生之间传递 核心区域。