Charge balance field effect transistor
    21.
    发明申请
    Charge balance field effect transistor 有权
    电荷平衡场效应晶体管

    公开(公告)号:US20060281249A1

    公开(公告)日:2006-12-14

    申请号:US11450903

    申请日:2006-06-08

    IPC分类号: H01L21/8242

    摘要: A field effect transistor is formed as follows. A semiconductor region of a first conductivity type with an epitaxial layer of a second conductivity extending over the semiconductor region is provided. A trench extending through the epitaxial layer and terminating in the semiconductor region is formed. A two-pass angled implant of dopants of the first conductivity type is carried out to thereby form a region of first conductivity type along the trench sidewalls. A threshold voltage adjust implant of dopants of the second conductivity type is carried out to thereby convert a conductivity type of a portion of the region of first conductivity type extending along upper sidewalls of the trench to the second conductivity type. Source regions of the first conductivity type flanking each side of the trench are formed.

    摘要翻译: 场效应晶体管如下形成。 提供了具有延伸在半导体区域上的具有第二导电性的外延层的第一导电类型的半导体区域。 形成延伸穿过外延层并终止在半导体区域中的沟槽。 执行第一导电类型的掺杂剂的双向成角度注入,从而沿着沟槽侧壁形成第一导电类型的区域。 执行阈值电压调整第二导电类型的掺杂剂的注入,从而将沿沟槽的上侧壁延伸的第一导电类型区域的一部分的导电类型转换为第二导电类型。 形成沟槽每一侧的第一导电类型的源区。

    Trench gate laterally diffused MOSFET devices and methods for making such devices
    22.
    发明授权
    Trench gate laterally diffused MOSFET devices and methods for making such devices 有权
    沟槽栅极横向扩散MOSFET器件和制造这种器件的方法

    公开(公告)号:US07033891B2

    公开(公告)日:2006-04-25

    申请号:US10269126

    申请日:2002-10-03

    摘要: A MOSFET device for RF applications that uses a trench gate in place of the lateral gate used in lateral MOSFET devices is described. The trench gate in the devices of the invention is provided with a single, short channel for high frequency gain. The device of the invention is also provided with an asymmetric oxide in the trench gate, as well as LDD regions that lower the gate-drain capacitance for improved RF performance. Such features allow these devices to maintain the advantages of the LDMOS structure (better linearity), thereby increasing the RF power gain. The trench gate LDMOS of the invention also reduces the hot carrier effects when compared to regular LDMOS devices by reducing the peak electric field and impact ionization. Thus, the devices of the invention will have a better breakdown capability.

    摘要翻译: 描述了用于RF应用的MOSFET器件,其使用沟槽栅极代替横向MOSFET器件中使用的横向栅极。 本发明的器件中的沟槽栅被提供有用于高频增益的单个短通道。 本发明的器件还在沟槽栅极中提供不对称氧化物,以及降低栅极 - 漏极电容以提高RF性能的LDD区域。 这些特征允许这些器件保持LDMOS结构的优点(更好的线性度),从而增加RF功率增益。 本发明的沟槽栅极LDMOS还通过减少峰值电场和冲击电离而与常规LDMOS器件相比降低了热载流子效应。 因此,本发明的装置将具有更好的击穿能力。

    Vertical charge control semiconductor device with low output capacitance
    23.
    发明申请
    Vertical charge control semiconductor device with low output capacitance 有权
    具有低输出电容的垂直充电控制半导体器件

    公开(公告)号:US20050023607A1

    公开(公告)日:2005-02-03

    申请号:US10931887

    申请日:2004-08-31

    摘要: In accordance with an embodiment of the present invention, a MOSFET includes at least two insulation-filled trench regions laterally spaced in a first semiconductor region to form a drift region therebetween, and at least one resistive element located along an outer periphery of each of the two insulation-filled trench regions. A ratio of a width of each of the insulation-filled trench regions to a width of the drift region is adjusted so that an output capacitance of the MOSFET is minimized.

    摘要翻译: 根据本发明的实施例,MOSFET包括在第一半导体区域中横向间隔开的至少两个绝缘填充沟槽区域,以在其间形成漂移区域,以及至少一个电阻元件沿着每个 两个绝缘填充沟槽区域。 调整每个绝缘填充沟槽区域的宽度与漂移区域的宽度的比率,使得MOSFET的输出电容最小化。

    Vertical charge control semiconductor device
    25.
    发明授权
    Vertical charge control semiconductor device 有权
    垂直充电控制半导体器件

    公开(公告)号:US06803626B2

    公开(公告)日:2004-10-12

    申请号:US10200056

    申请日:2002-07-18

    IPC分类号: H01L2976

    摘要: In accordance with an embodiment of the present invention, a MOSFET includes at least two insulation-filled trench regions laterally spaced in a first semiconductor region to form a drift region therebetween, and at least one resistive element located along an outer periphery of each of the two insulation-filled trench regions. A ratio of a width of each of the insulation-filled trench regions to a width of the drift region is adjusted so that an output capacitance of the MOSFET is minimized.

    摘要翻译: 根据本发明的实施例,MOSFET包括在第一半导体区域中横向间隔开的至少两个绝缘填充沟槽区域,以在其间形成漂移区域,以及至少一个电阻元件沿着每个 两个绝缘填充沟槽区域。 调整每个绝缘填充沟槽区域的宽度与漂移区域的宽度的比率,使得MOSFET的输出电容最小化。

    Field effect transistor and method of its manufacture
    27.
    发明授权
    Field effect transistor and method of its manufacture 失效
    场效应晶体管及其制造方法

    公开(公告)号:US06429481B1

    公开(公告)日:2002-08-06

    申请号:US08970221

    申请日:1997-11-14

    IPC分类号: H01L2978

    摘要: A trenched field effect transistor is provided that includes (a) a semiconductor substrate, (b) a trench extending a predetermined depth into the semiconductor substrate, (c) a pair of doped source junctions, positioned on opposite sides of the trench, (d) a doped heavy body positioned adjacent each source junction on the opposite side of the source junction from the trench, the deepest portion of the heavy body extending less deeply into said semiconductor substrate than the predetermined depth of the trench, and (e) a doped well surrounding the heavy body beneath the heavy body.

    摘要翻译: 提供了沟槽场效应晶体管,其包括(a)半导体衬底,(b)在半导体衬底中延伸预定深度的沟槽,(c)位于沟槽相对侧上的一对掺杂源极结(d )掺杂的重体,其位于与沟槽的源极结的相对侧上的每个源极结附近,重体的最深部分比沟槽的预定深度更深地延伸到所述半导体衬底中,以及(e)掺杂 很好地围着沉重的身体下面的沉重的身体。