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    • 32. 发明授权
    • Insulated gate bipolar transistor having a coupling element
    • 具有耦合元件的绝缘栅双极晶体管
    • US5710444A
    • 1998-01-20
    • US448505
    • 1995-06-08
    • Horst NeubrandJacek KorecDieter Silber
    • Horst NeubrandJacek KorecDieter Silber
    • H01L29/78H01L29/10H01L29/739H01L29/786H01L29/72
    • H01L29/1095H01L29/7394
    • The invention concerns a field-effect controlled semiconductor component with at least four regions of alternating opposite performance types: an anode-side emitter region, a first and a second base region connected to the emitter region, and a cathode-side emitter region; the cathode-side emitter region and the first base region from the source and drain of an MOS field effect transistor. The component also comprises an anode contact, a contact at the cathode-side emitter region and a control electrode contact of the MOS field effect transistor. The invention lies in the fact that a p+ region (36) which is adjacent to the cathode-side base region, separate, and accomodated in the anode-side n- base region (20), is connected via a separate component as a coupling element (80) with non-linear current/voltage characteristics to the cathode contact, the said region (36) being directly surrounded by the anode-side base region (20). When the field effect transistor is switched off the electrical potential in the area surrounding the supplementary p+ region (36) will exceed the threshold voltage of the coupling element, so that the supplementary p+ region (36) acts as a current sink by which the hole current can drain off against low resistance. A parasitic thyristor function is thus avoided.
    • PCT No.PCT / EP93 / 03688 371日期:1995年6月8日 102(e)日期1995年6月8日PCT 1993年12月24日PCT公布。 公开号WO94 / 15365 日期:1994年7月7日本发明涉及具有交替相反性能类型的至少四个区域的场效应控制半导体部件:阳极侧发射极区域,连接到发射极区域的第一和第二基极区域, 侧发射区; 阴极侧发射极区域和来自MOS场效应晶体管的源极和漏极的第一基极区域。 该部件还包括阳极接触,阴极侧发射区的接触和MOS场效应晶体管的控制电极接触。 本发明的目的在于,与阳极侧基极区域相邻的p +区域(36)分离并容纳在阳极侧正极基极区域(20)中,经由单独的部件作为耦合 元件(80)对阴极接触具有非线性电流/电压特性,所述区域(36)被阳极侧基极区域(20)直接包围。 当场效应晶体管截止时,辅助p +区域(36)周围的区域中的电位将超过耦合元件的阈值电压,使得辅助p +区域(36)用作电流阱,通过该电流阱 电流可以消除低电阻。 因此避免了寄生晶闸管功能。
    • 33. 发明授权
    • Dual-channel emitter switched thyristor with trench gate
    • 双沟道发射极开关晶闸管与沟槽栅极
    • US5471075A
    • 1995-11-28
    • US249898
    • 1994-05-26
    • Mallikarjunaswamy S. ShekarB. Jayant BaligaJacek Korec
    • Mallikarjunaswamy S. ShekarB. Jayant BaligaJacek Korec
    • H01L29/08H01L29/745H01L29/749H01L29/74H01L31/111
    • H01L29/749H01L29/0839H01L29/7455
    • A semiconductor switching device includes a plurality of adjacent and parallel-connected switching cells in a semiconductor substrate. Each cell includes a thyristor having a floating emitter region and a trench-gate field effect transistor (TFET) for providing turn-on and turn-off control of the thyristor. In one embodiment of the switching device, parasitic thyristor latch-up is suppressed by using a dual-channel TFET which forms both inversion-layer and accumulation-layer channel connections in series between respective floating emitter regions and the cathode contact. In another embodiment, parasitic thyristor latch-up is prevented by joining floating emitter regions of a pair of adjacent cells to thereby eliminate a parasitic P-N-P-N path between the anode and cathode contacts. According to this second embodiment, a dual-channel TFET is preferably used to form a separate first conductivity type inversion-layer channel adjacent a first sidewall of the trench and a second conductivity type inversion-layer channel adjacent a second opposing sidewall of the trench. These channels provide the necessary electrical connections for both gated turn-on and turn-off control.
    • 半导体开关器件包括在半导体衬底中的多个相邻和并联连接的开关单元。 每个单元包括具有浮动发射极区域的晶闸管和用于提供晶闸管的导通和截止控制的沟槽栅极场效应晶体管(TFET)。 在开关器件的一个实施例中,通过使用在相应的浮置发射极区域和阴极触点之间串联形成反转层和堆叠层沟道连接的双沟道TFET来抑制寄生晶闸管闩锁。 在另一个实施例中,通过连接一对相邻单元的浮置发射极区域来防止寄生晶闸管闩锁,从而消除阳极和阴极触点之间的寄生P-N-P-N路径。 根据该第二实施例,优选地使用双沟道TFET来形成与沟槽的第一侧壁相邻的单独的第一导电类型反型层沟道和与沟槽的第二相对侧壁相邻的第二导电类型反型层沟道。 这些通道为门控开启和关断控制提供必要的电气连接。