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
    • 1. 发明授权
    • Protecting device for a gate turn-off thyristor
    • 栅极关断晶闸管保护装置
    • US4392175A
    • 1983-07-05
    • US212244
    • 1980-12-02
    • Katsuhiko TakigamiMinami Takeuchi
    • Katsuhiko TakigamiMinami Takeuchi
    • H03K17/082H02H3/20
    • H03K17/0824
    • A protecting device includes a discriminating circuit and a protecting circuit. The GTO thyristor is operated in such a manner that a carrier storing is completed from a first time point at which the supply of a negative gate current is started to a second time point, an anode-cathode voltage increases from the second time point to a third time point and decreases from the third time point to a fourth time point, and increases again from the fourth time point. The discriminating circuit includes a circuit for obtaining an amount of change between the anode-cathode voltages at the third and fourth time points, a circuit for obtaining a ratio of the amount of change to the anode-cathode voltage at the third time point, and a comparing circuit for producing a control signal when the ratio is smaller than a given value. The protecting circuit, when receiving the control signal, stops the conduction of the GTO thyristor. It is judged whether or not the GTO thyristor is operated at a critical point to its break-down.
    • 保护装置包括识别电路和保护电路。 GTO晶闸管的操作方式是从负栅极电流的供给开始到第二时间点的第一时间点完成载流子存储,阳极 - 阴极电压从第二时间点增加到 第三时间点,并且从第三时间点减少到第四时间点,并且从第四时间点开始再次增加。 识别电路包括用于获得在第三和第四时间点的阳极 - 阴极电压之间的变化量的电路,用于获得在第三时间点的变化量与阳极 - 阴极电压的比率的电路,以及 比较电路,用于当所述比值小于给定值时产生控制信号。 保护电路在接收到控制信号时,停止GTO晶闸管的导通。 判断GTO晶闸管是否在其分解的关键点运行。
    • 3. 发明授权
    • Reverse conducting thyristor with specific resistor structures between
main cathode and amplifying, reverse conducting portions
    • US4357621A
    • 1982-11-02
    • US89102
    • 1979-10-29
    • Minami Takeuchi
    • Minami Takeuchi
    • H01L29/74H01L29/747
    • H01L29/7416
    • A reverse conducting thyristor includes a thyristor section, a diode section and a semiconductor separator section for electrically separating both the sections. The thyristor section includes: a first region of first conductivity type, a second region of a second conductivity type, a third region of the first conductivity type, a main emitter region of the second conductivity type, an auxiliary emitter region formed, with intervention of the exposed portion of said third region, facing at least a part of the periphery of said main emitter region which does not contact the separate section and a cathode electrode, an auxiliary gate electrode contacting the auxiliary emitter region and enclosing, with intervention of the exposed portion of the third region, at least a part of the periphery of said main emitter region which does not contact the separate section, and a main gate electrode formed on the exposure surface of the third region contacting the side wall of the auxiliary emitter region which does not face the main emitter region. The respective components are successively layered on a first electrode acting as an anode electrode. The diode section includes a fourth region of the second conductivity type formed on the first or anode electrode, a fifth region of the first conductivity type formed on the fourth region, and a second electrode formed on the fifth region and connected to the cathode electrode. The separate section includes a sixth region formed on the first electrode and of the first conductivity type, a seventh region formed on the sixth region and of the second conductivity type and an eighth region formed on the seventh region and of the first conductivity type. The resistance values of the semiconductor layers between the cathode electrode and the second electrode and between the cathode electrode and the auxiliary gate electrode are each 2 to 18 Ohms.
    • 4. 发明授权
    • Reverse conducting amplified gate thyristor with plate-like separator
section
    • US4296427A
    • 1981-10-20
    • US70655
    • 1979-08-28
    • Minami TakeuchiMinoru Kuriki
    • Minami TakeuchiMinoru Kuriki
    • H01L29/74H01L29/747
    • H01L29/7416
    • A reverse conducting thyristor comprises a thyristor section, a diode section and a separator section. The three sections are integrally formed into a cylindrical body. The thyristor section is constituted by a first region of a first conductivity type, a second region of the second conductivity type, a third region of the first conductivity type, a main emitter region of the second conductivity type, a cathode electrode, an auxiliary emitter region, an auxiliary gate electrode and a main gate electrode.The first region is formed on a first electrode, the second region on the first region, and the third region on the second region. The main emitter region is so formed in the third region as to have its surface on the same level with that of the third region. The auxiliary emitter region is similarly formed in the third region and faces at least a part of that periphery of the main emitter region which does not contact the separator section. The cathode electrode is formed on the main emitter region. The auxiliary gate electrode is formed partly on the third region and partly on the auxiliary emitter region and is arched concentrically with the cylindrical body so as to surround at least a part of said periphery of the main emitter region. The main gate electrode is formed on that surface portion of the third region which is adjacent to that lateral surface of the auxiliary emitter region which does not face the main emitter region.The diode section comprises a fourth region of the second conductivity type, a fifth region of the first conductivity type and a second electrode. The fourth region is formed on the first electrode, the fifth region on the fourth region, and the second electrode on the fifth region.The separator section is a plate which is constituted by a sixth region of the first conductivity type, a seventh region of the second conductivity type and an eight region of the first conductivity type. The sixth region is formed on the first electrode, the seventh region on the sixth region, and the eighth region on the seventh region.