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    • 6. 发明授权
    • Chip PTC thermistor and method of manufacturing the same
    • 芯片PTC热敏电阻及其制造方法
    • US06348852B1
    • 2002-02-19
    • US09807180
    • 2001-06-07
    • Junji KojimaKiyoshi IkeuchiTakashi IkedaKoichi MorimotoToshiyuki Iwao
    • Junji KojimaKiyoshi IkeuchiTakashi IkedaKoichi MorimotoToshiyuki Iwao
    • H01C710
    • H01C7/18H01C1/1406H01C7/021H01C7/027H01C17/006Y10T29/49082
    • The PTC thermistor chip of the present invention comprises a conductive polymer having PTC properties, a first outer electrode, a second outer layer electrode, not less than one inner electrode sandwiched between the conductive polymer, a first electrode electrically directly coupled with the first outer electrode, and a second electrode disposed electrically independently from the first electrode. When counting from one of the inner electrodes closest to the first outer layer electrode, and defining the inner layer electrode in a “n”th position as the “n”th inner electrode, the odd-numbered inner layer electrodes are directly coupled with the second electrode and the even-numbered inner layer electrodes, with the first electrode. In this PTC thermistor, the cross sections where the odd-numbered and even numbered inner electrodes are respectively in contact with the second and first electrodes are thicker than the other sections.
    • 本发明的PTC热敏电阻芯片包括具有PTC特性的导电聚合物,第一外电极,第二外层电极,夹在导电聚合物之间的不少于一个内电极,与第一外电极电连接的第一电极 以及与第一电极电独立设置的第二电极。 当从最靠近第一外层电极的一个内部电极计数,并且将第n个内部电极中的内层电极限定为“n”个位置时,奇数编号的内层电极与 第二电极和偶数内层电极,与第一电极。 在该PTC热敏电阻中,奇数编号和偶数编号的内电极分别与第二电极和第一电极接触的横截面比其他部分厚。
    • 9. 发明授权
    • PTC chip thermistor
    • PTC芯片热敏电阻
    • US06593844B1
    • 2003-07-15
    • US09868028
    • 2001-06-13
    • Toshiyuki IwaoKoichi MorimotoKiyoshi IkeuchiJunji KojimaTakashi Ikeda
    • Toshiyuki IwaoKoichi MorimotoKiyoshi IkeuchiJunji KojimaTakashi Ikeda
    • H01C710
    • H01C17/006H01C1/1406H01C7/021H01C7/028
    • A chip PTC thermistor comprising a conductive polymer having PTC properties, a first outer electrode, a second outer electrode, one or more inner electrodes sandwiched between the conductive polymer, a first electrode electrically directly coupled with the first outer electrode, and a second electrode. The odd-numbered inner electrode among the one-or-more inner electrodes is directly coupled with the second electrode, while the even-numbered inner electrode, with the first electrode. When total number of the inner electrodes is an odd number the second outer electrode makes direct electrical contact with the first electrode, when it is an even number the second outer electrode makes direct electrical contact with the second electrode. Defining a distance from the odd-numbered inner electrode to the first electrode, or from the even-numbered inner electrode to the second electrode, as “a”, while a distance between the adjacent inner electrodes, or a distance between the inner electrode placed the most adjacent to the first outer electrode, or the second outer electrode, and the first outer electrode, or the second outer electrode, as “t”; the PTC thermistors are constituted so that a ratio a/t is within 3-6. The chip PTC thermistors in accordance with the present invention effectively prevent an overcurrent in large current circuits.
    • 一种片状PTC热敏电阻,包括具有PTC性质的导电聚合物,第一外部电极,第二外部电极,夹在导电聚合物之间的一个或多个内部电极,与第一外部电极直接耦合的第一电极和第二电极。 一个或多个内部电极中的奇数内部电极与第二电极直接耦合,而偶数内部电极与第一电极直接耦合。 当内部电极的总数为奇数时,第二外部电极与第一电极直接电接触,当第二外部电极为偶数时,第二外部电极与第二电极直接电接触。 将从奇数编号的内部电极到第一电极或从偶数的内部电极到第二电极的距离定义为“a”,而相邻的内部电极之间的距离或放置的内部电极之间的距离 与第一外电极或第二外电极最相邻,第一外电极或第二外电极为“t”; PTC热敏电阻构成为a / t比在3-6以内。 根据本发明的芯片PTC热敏电阻有效地防止了大电流电路中的过电流。
    • 10. 发明授权
    • Method of manufacturing chip PTC thermistor
    • 芯片PTC热敏电阻的制造方法
    • US06481094B1
    • 2002-11-19
    • US09508062
    • 2000-04-21
    • Takashi IkedaKiyoshi IkeuchiKoichi MorimotoJunji Kojima
    • Takashi IkedaKiyoshi IkeuchiKoichi MorimotoJunji Kojima
    • H01C702
    • H01C17/006H01C1/1406H01C7/027H01C17/02Y10T29/49082Y10T29/49085Y10T29/49099Y10T29/49787
    • A method of manufacturing a chip PTC thermistor utilizes a piece of conductive polymer having a PTC characteristic and metal foils formed by patterning and provided on the upper and the lower sides of the piece under pressure integrally into a sheet, making a hole part in the sheet, applying a protective coating serving as plating resist to upper and lower sides of the sheet, forming an electrode on the sheet by electroplating, and cutting the sheet into a chip. The protective coating is made of a material applicable at a temperature equal to or lower than the melting point of the conductive polymer. The processing temperatures at the step from the step of making a hole part in the sheet to the pre-processing step of the step of forming an electrode by electroplating on the sheet are not above the melting point of the conductive polymer.
    • 一种片状PTC热敏电阻的制造方法利用一种具有PTC特性的导电聚合物和通过图案化形成的金属箔,并将其设置在片材的上下两侧,一体地压入片材中,在片材中形成孔部分 在片材的上下侧涂敷作为电镀抗蚀剂的保护层,通过电镀在片材上形成电极,将片材切断成芯片。 保护涂层由适用于等于或低于导电聚合物熔点的温度的材料制成。 从片材中的孔部分的步骤到通过电镀在片材上形成电极的步骤的预处理步骤的步骤的处理温度不高于导电聚合物的熔点。