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    • 3. 发明授权
    • IGBT with monolithic integrated antiparallel diode
    • IGBT采用单片集成反并联二极管
    • US07112868B2
    • 2006-09-26
    • US10698082
    • 2003-10-30
    • Armin WillmerothHans-Joachim SchulzeHolger HueskenErich Griebl
    • Armin WillmerothHans-Joachim SchulzeHolger HueskenErich Griebl
    • H01L29/732
    • H01L29/861H01L29/0696H01L29/0834H01L29/7395H01L2224/0603H01L2224/4903H01L2924/13055H01L2924/00
    • An IGBT with monolithic integrated antiparallel diode has one or more emitter short regions forming the diode cathode in the region of the high-voltage edge. The p-type emitter regions of the IGBT have no emitter shorts. The counterelectrode of the diode exclusively comprises p-type semiconductor wells on the front side of the device. Particularly in applications, such as lamp ballast, in which the diode of the IGBT is firstly forward-biased, hard commutation is not effected and the current reversal takes place relatively slowly. The emitter short regions may be strips or points below the high-voltage edge. The horizontal bulk resistance is increased and the snapback effect is reduced without reducing the robustness in the edge region. In a second embodiment, the IGBT is produced using thin wafer technology and the thickness of the substrate defining the inner zone is less than 200 μm. The thickness of the emitter region or of the emitter regions and short region(s) is less than 1 μm. A transparent emitter is preferable in this case.
    • 具有单片集成反并联二极管的IGBT具有在高压边缘的区域中形成二极管阴极的一个或多个发射极短路区域。 IGBT的p型发射极区域没有发射极短路。 二极管的反电极仅在器件前侧包含p型半导体阱。 特别是在其中IGBT的二极管首先被正向偏置的诸如灯镇流器的应用中,不会进行硬换向,并且电流反转相对缓慢地发生。 发射极短区域可以是高压边缘以下的条带或点。 水平体积电阻增加,并且在不降低边缘区域的鲁棒性的情况下降低了回弹效应。 在第二实施例中,使用薄晶片技术制造IGBT,并且限定内部区域的衬底的厚度小于200μm。 发射极区域或发射极区域和短区域的厚度小于1um。 在这种情况下,优选透明发光体。