Power transistor arrangement and method for fabricating it
    1.
    发明授权
    Power transistor arrangement and method for fabricating it 有权
    功率晶体管布置及其制造方法

    公开(公告)号:US07250343B2

    公开(公告)日:2007-07-31

    申请号:US10987189

    申请日:2004-11-12

    IPC分类号: H01L21/336

    摘要: In the case of the cost-effective method according to the invention for fabricating a power transistor arrangement, a trench power transistor arrangement (1) is fabricated with four patterning planes each containing a lithography step. The power transistor arrangement according to the invention has a cell array (3) with cell array trenches (5) each containing a field electrode structure (11) and a gate electrode structure (10). The field electrode structure (11) is electrically conductively connected to the source metallization (15) by a connection trench (6) in the cell array (3).

    摘要翻译: 在根据本发明的用于制造功率晶体管布置的成本有效的方法的情况下,制造具有四个图案平面的沟槽功率晶体管布置(1),每个图案平面包含光刻步骤。 根据本发明的功率晶体管装置具有一个具有单元阵列沟槽(5)的单元阵列(3),每个单元阵列具有场电极结构(11)和栅电极结构(10)。 场电极结构(11)通过电池阵列(3)中的连接沟槽(6)与源极金属化(15)导电连接。

    Power transistor arrangement and method for fabricating it
    2.
    发明授权
    Power transistor arrangement and method for fabricating it 有权
    功率晶体管布置及其制造方法

    公开(公告)号:US07186618B2

    公开(公告)日:2007-03-06

    申请号:US10977118

    申请日:2004-10-29

    IPC分类号: H01L21/336

    摘要: When fabricating trench power transistor arrangements (1) with active cell array trenches (5) and passive connecting trenches (6), the cell array trenches (5) are provided in greater width than the connecting trenches (6). An auxiliary layer (24) is deposited conformally onto a lower field electrode structure (11) in the cell array trenches (5) and the connecting trenches (6) and is etched back as far as the top edge in the connecting trenches (6), which removes it from the cell array trenches (5). The auxiliary layer (24) allows the gate oxide (20) to be patterned without a complex mask process. An edge trench (7), with an electrode, on the potential of the field electrode structure (11) shields the cell array (3) from a drain potential.

    摘要翻译: 当制造具有有源电池阵列沟槽(5)和无源连接沟槽(6)的沟槽功率晶体管布置(1)时,电池阵列沟槽(5)的宽度大于连接沟槽(6)。 辅助层(24)保形地沉积在单元阵列沟槽(5)和连接沟槽(6)中的下部电场结构(11)上并被回蚀到连接沟槽(6)中的顶部边缘, ,其从单元阵列沟槽(5)中移除它。 辅助层(24)允许栅极氧化物(20)被图案化而不需要复杂的掩模工艺。 在场电极结构(11)的电位上具有电极的边缘沟槽(7)将电池阵列(3)与漏极电势屏蔽。

    Field-effect-controllable semiconductor component and method for fabricating the component
    5.
    发明授权
    Field-effect-controllable semiconductor component and method for fabricating the component 有权
    场效应可控半导体元件及其制造方法

    公开(公告)号:US06927101B2

    公开(公告)日:2005-08-09

    申请号:US10402812

    申请日:2003-03-28

    摘要: A method for fabricating a field-effect-controllable semiconductor component includes providing a configuration having a semiconductor body with a front side, a rear side, a first terminal zone of a first conduction type, a channel zone of a second conduction type formed above the first terminal zone, and at least one control electrode adjacent the channel zone. The control electrode is insulated from the semiconductor body. A second terminal zone of the first conduction type is fabricated in the channel zone near the front side of the semiconductor body by: doping the channel zone near the front side with a first dopant concentration to fabricate a first zone of the first conduction type, and doping a section of the first zone with a second dopant concentration higher than the first dopant concentration to form a second zone of the first conduction type.

    摘要翻译: 一种场效应可控半导体元件的制造方法,其特征在于,具有:具有前侧,后侧,第一导电型的第一端子区,第二导电型的沟道区, 第一端子区和与通道区相邻的至少一个控制电极。 控制电极与半导体本体绝缘。 第一导电类型的第二端子区通过以第一掺杂剂浓度掺杂前面附近的沟道区,制造在第一导电类型的第一区,在靠近半导体本体的前侧的沟道区中制造,以及 以高于第一掺杂剂浓度的第二掺杂剂浓度掺杂第一区的一部分,以形成第一导电类型的第二区。