Silicon carbide semiconductor device
    3.
    发明申请
    Silicon carbide semiconductor device 有权
    碳化硅半导体器件

    公开(公告)号:US20060284217A1

    公开(公告)日:2006-12-21

    申请号:US11501777

    申请日:2006-08-10

    IPC分类号: H01L29/80

    CPC分类号: H01L29/8083 H01L29/1608

    摘要: A silicon carbide semiconductor device includes: a semiconductor substrate including first and second gate layers, a channel layer, a source layer, and a trench; a gate wiring having a first portion and a plurality of second portions; and a source wiring having a third portion and a plurality of fourth portions. The trench extends in a predetermined extending direction. The first portion connects to the first gate layer in the trench, and extends to the extending direction. The second portions protrude perpendicularly to be a comb shape. The third portion extends to the extending direction. The fourth portions protrude perpendicularly to be a comb shape, and electrically connect to the source layer. Each of the second portions connects to the second gate layer through a contact hole.

    摘要翻译: 碳化硅半导体器件包括:包括第一和第二栅极层,沟道层,源极层和沟槽的半导体衬底; 栅极布线,具有第一部分和多个第二部分; 以及具有第三部分和多个第四部分的源极布线。 沟槽沿预定的延伸方向延伸。 第一部分连接到沟槽中的第一栅极层,并延伸到延伸方向。 第二部分垂直突出成为梳形。 第三部分延伸到延伸方向。 第四部分垂直突出成梳状,并且电连接到源层。 每个第二部分通过接触孔连接到第二栅极层。

    Silicon carbide semiconductor device
    4.
    发明授权
    Silicon carbide semiconductor device 有权
    碳化硅半导体器件

    公开(公告)号:US07821013B2

    公开(公告)日:2010-10-26

    申请号:US11501777

    申请日:2006-08-10

    IPC分类号: H01L29/12 H01L29/41

    CPC分类号: H01L29/8083 H01L29/1608

    摘要: A silicon carbide semiconductor device includes: a semiconductor substrate including first and second gate layers, a channel layer, a source layer, and a trench; a gate wiring having a first portion and a plurality of second portions; and a source wiring having a third portion and a plurality of fourth portions. The trench extends in a predetermined extending direction. The first portion connects to the first gate layer in the trench, and extends to the extending direction. The second portions protrude perpendicularly to be a comb shape. The third portion extends to the extending direction. The fourth portions protrude perpendicularly to be a comb shape, and electrically connect to the source layer. Each of the second portions connects to the second gate layer through a contact hole.

    摘要翻译: 碳化硅半导体器件包括:包括第一和第二栅极层,沟道层,源极层和沟槽的半导体衬底; 栅极布线,具有第一部分和多个第二部分; 以及具有第三部分和多个第四部分的源极布线。 沟槽沿预定的延伸方向延伸。 第一部分连接到沟槽中的第一栅极层,并延伸到延伸方向。 第二部分垂直突出成为梳形。 第三部分延伸到延伸方向。 第四部分垂直突出成梳状,并且电连接到源层。 每个第二部分通过接触孔连接到第二栅极层。

    Gate wiring layout for silicon-carbide-based junction field effect transistor
    5.
    发明授权
    Gate wiring layout for silicon-carbide-based junction field effect transistor 有权
    基于碳化硅的结型场效应晶体管的栅极布线布局

    公开(公告)号:US07164154B2

    公开(公告)日:2007-01-16

    申请号:US10995566

    申请日:2004-11-24

    IPC分类号: H01L29/15

    CPC分类号: H01L29/8083 H01L29/1608

    摘要: A silicon carbide semiconductor device includes: a semiconductor substrate including first and second gate layers, a channel layer, a source layer, and a trench; a gate wiring having a first portion and a plurality of second portions; and a source wiring having a third portion and a plurality of fourth portions. The trench extends in a predetermined extending direction. The first portion connects to the first gate layer in the trench, and extends to the extending direction. The second portions protrude perpendicularly to be a comb shape. The third portion extends to the extending direction. The fourth portions protrude perpendicularly to be a comb shape, and electrically connect to the source layer. Each of the second portions connects to the second gate layer through a contact hole.

    摘要翻译: 碳化硅半导体器件包括:包括第一和第二栅极层,沟道层,源极层和沟槽的半导体衬底; 栅极布线,具有第一部分和多个第二部分; 以及具有第三部分和多个第四部分的源极布线。 沟槽沿预定的延伸方向延伸。 第一部分连接到沟槽中的第一栅极层,并延伸到延伸方向。 第二部分垂直突出成为梳形。 第三部分延伸到延伸方向。 第四部分垂直突出成梳状,并且电连接到源层。 每个第二部分通过接触孔连接到第二栅极层。

    Silicon carbide semiconductor device
    6.
    发明申请
    Silicon carbide semiconductor device 有权
    碳化硅半导体器件

    公开(公告)号:US20050145852A1

    公开(公告)日:2005-07-07

    申请号:US10995566

    申请日:2004-11-24

    CPC分类号: H01L29/8083 H01L29/1608

    摘要: A silicon carbide semiconductor device includes: a semiconductor substrate including first and second gate layers, a channel layer, a source layer, and a trench; a gate wiring having a first portion and a plurality of second portions; and a source wiring having a third portion and a plurality of fourth portions. The trench extends in a predetermined extending direction. The first portion connects to the first gate layer in the trench, and extends to the extending direction. The second portions protrude perpendicularly to be a comb shape. The third portion extends to the extending direction. The fourth portions protrude perpendicularly to be a comb shape, and electrically connect to the source layer. Each of the second portions connects to the second gate layer through a contact hole.

    摘要翻译: 碳化硅半导体器件包括:包括第一和第二栅极层,沟道层,源极层和沟槽的半导体衬底; 栅极布线,具有第一部分和多个第二部分; 以及具有第三部分和多个第四部分的源极布线。 沟槽沿预定的延伸方向延伸。 第一部分连接到沟槽中的第一栅极层,并延伸到延伸方向。 第二部分垂直突出成为梳形。 第三部分延伸到延伸方向。 第四部分垂直突出成梳状,并且电连接到源层。 每个第二部分通过接触孔连接到第二栅极层。

    Silicon carbide semiconductor device
    7.
    发明授权
    Silicon carbide semiconductor device 有权
    碳化硅半导体器件

    公开(公告)号:US06573534B1

    公开(公告)日:2003-06-03

    申请号:US09265582

    申请日:1999-03-10

    IPC分类号: H01L310312

    摘要: A semiconductor device, comprising: a semiconductor substrate comprising silicon carbide of a first conductivity type; a silicon carbide epitaxial layer of the first conductivity type; a first semiconductor region formed on the semiconductor substrate and comprising silicon carbide of a second conductivity type; a second semiconductor region formed on the first semiconductor region, comprising silicon carbide of the first conductivity type and separated from the semiconductor substrate of the first conductivity type by the first semiconductor region; a third semiconductor region formed on the semiconductor region, connected to the semiconductor substrate and the second semiconductor region, comprising silicon carbide of the first conductivity type, and of higher resistance than the semiconductor substrate; and a gate electrode formed on the third semiconductor region via an insulating layer; wherein the third semiconductor layer is depleted when no voltage is being applied to the gate electrode so that said semiconductor device has a normally OFF characteristic.

    摘要翻译: 一种半导体器件,包括:包含第一导电类型的碳化硅的半导体衬底; 第一导电类型的碳化硅外延层; 形成在所述半导体衬底上并且包括第二导电类型的碳化硅的第一半导体区域; 形成在所述第一半导体区域上的第二半导体区域,包括所述第一导电类型的碳化硅并且通过所述第一半导体区域与所述第一导电类型的半导体衬底分离; 形成在所述半导体区域上的第三半导体区域,与所述半导体衬底和所述第二半导体区域连接,所述第二半导体区域包括所述第一导电型的碳化硅,并且具有比所述半导体衬底更高的电阻; 以及经由绝缘层形成在所述第三半导体区域上的栅电极; 其中当没有电压施加到所述栅电极时,所述第三半导体层被耗尽,使得所述半导体器件具有正常OFF特性。

    Semiconductor device
    8.
    发明授权
    Semiconductor device 失效
    半导体器件

    公开(公告)号:US6054752A

    公开(公告)日:2000-04-25

    申请号:US107507

    申请日:1998-06-30

    摘要: A semiconductor device comprises a semiconductor substrate including a first conductivity type first semiconductor layer and a second conductivity type second semiconductor layer formed on the first semiconductor layer. A unit cell for controlling current flowing between a source electrode and a drain electrode is formed in the semiconductor substrate. A trench is formed in a peripheral region of the unit cell to form mesa structure. A field relaxing layer is formed between an insulating film on a side face of the second trench and both the first semiconductor layer and the second semiconductor layer in order to relax concentration of an electric field in the insulating film.

    摘要翻译: 半导体器件包括:半导体衬底,包括形成在第一半导体层上的第一导电型第一半导体层和第二导电型第二半导体层。 在半导体衬底中形成用于控制在源电极和漏电极之间流动的电流的单元。 在单电池的周边区域形成沟槽,形成台面结构。 在第二沟槽的侧面上的绝缘膜与第一半导体层和第二半导体层之间形成场弛豫层,以使绝缘膜中的电场的集中化。

    Method of manufacturing silicon carbide semiconductor device using active and inactive ion species
    9.
    发明授权
    Method of manufacturing silicon carbide semiconductor device using active and inactive ion species 有权
    使用有源和非活性离子物质制造碳化硅半导体器件的方法

    公开(公告)号:US06297100B1

    公开(公告)日:2001-10-02

    申请号:US09408185

    申请日:1999-09-29

    IPC分类号: H01L21336

    摘要: In a vertical MOSFET, an inactive ion species is ion-implanted into a J-FET portion, a surface channel layer, and/or a base region. The inactive ion species fill intrinsic carbon vacancies or interact with interstitial Si atoms, which are possible origin or responsible for B-diffusion from the base region. Accordingly, the B-diffusion caused by the intrinsic carbon vacancies when the base region is formed is suppressed. The width of the J-FET portion is prevented from being decreased, thereby preventing an increase in resistance of the J-FET portion. Also, the conductive type of the surface channel layer is prevented from being inverted by diffused impurities.

    摘要翻译: 在垂直MOSFET中,将非活性离子种离子注入到J-FET部分,表面沟道层和/或基极区域中。 非活性离子物质填充本征碳空位或与间隙Si原子相互作用,这是可能的起源或负责来自碱性区域的B扩散。 因此,抑制了形成基极区域时由本征碳空位引起的B扩散。 防止J-FET部分的宽度减小,从而防止J-FET部分的电阻增加。 此外,通过扩散的杂质防止了表面通道层的导电类型的反转。