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    Power semiconductor device and method for manufacturing same
    1.
    发明授权
    Power semiconductor device and method for manufacturing same 失效
    功率半导体器件及其制造方法

    公开(公告)号：US08610210B2

    公开(公告)日：2013-12-17

    申请号：US12840201

    申请日：2010-07-20

    申请人： Hiroshi Ohta ,  Yasuto Sumi ,  Kiyoshi Kimura ,  Wataru Sekine ,  Wataru Saito ,  Syotaro Ono ,  Munehisa Yabuzaki ,  Nana Hatano ,  Miho Watanabe

    发明人： Hiroshi Ohta ,  Yasuto Sumi ,  Kiyoshi Kimura ,  Wataru Sekine ,  Wataru Saito ,  Syotaro Ono ,  Munehisa Yabuzaki ,  Nana Hatano ,  Miho Watanabe

    IPC分类号： H01L29/66

    CPC分类号： H01L29/66712 ,  H01L29/0619 ,  H01L29/0634 ,  H01L29/0638 ,  H01L29/0696 ,  H01L29/1095 ,  H01L29/402 ,  H01L29/7811

    摘要： According to one embodiment, a power semiconductor device includes a first semiconductor layer, and first, second and third semiconductor regions. The first semiconductor layer has a first conductivity type. The first semiconductor regions have a second conductivity type, and are formed with periodicity in a lateral direction in a second semiconductor layer of the first conductivity type. The second semiconductor layer is provided on a major surface of the first semiconductor layer in a device portion with a main current path formed in a vertical direction generally perpendicular to the major surface and in a terminal portion provided around the device portion. The second semiconductor region has the first conductivity type and is a portion of the second semiconductor layer sandwiched between adjacent ones of the first semiconductor regions. The third semiconductor regions have the second conductivity type and are provided below the first semiconductor regions in the terminal portion.

    摘要翻译： 根据一个实施例，功率半导体器件包括第一半导体层以及第一，第二和第三半导体区域。 第一半导体层具有第一导电类型。 第一半导体区域具有第二导电类型，并且在第一导电类型的第二半导体层中在横向方向上形成周期性。 第二半导体层设置在器件部分的第一半导体层的主表面上，其主电流通道形成在大体上垂直于主表面的垂直方向上，以及设置在器件部分周围的端子部分中。 第二半导体区域具有第一导电类型，并且是夹在相邻的第一半导体区域中的第二半导体层的一部分。 第三半导体区域具有第二导电类型并且设置在端子部分中的第一半导体区域的下方。

    Power semiconductor device
    3.
    发明授权
    Power semiconductor device 有权
    功率半导体器件

    公开(公告)号：US08232593B2

    公开(公告)日：2012-07-31

    申请号：US12714002

    申请日：2010-02-26

    申请人： Wataru Saito ,  Syotaro Ono ,  Hiroshi Ohta ,  Munehisa Yabuzaki ,  Nana Hatano ,  Miho Watanabe

    发明人： Wataru Saito ,  Syotaro Ono ,  Hiroshi Ohta ,  Munehisa Yabuzaki ,  Nana Hatano ,  Miho Watanabe

    IPC分类号： H01L29/78 ,  H01L29/06

    CPC分类号： H01L29/7811 ,  H01L29/0619 ,  H01L29/0634 ,  H01L29/0638 ,  H01L29/0649 ,  H01L29/0653 ,  H01L29/0661 ,  H01L29/0692 ,  H01L29/0696 ,  H01L29/407 ,  H01L29/7395 ,  H01L29/861 ,  H01L29/8611

    摘要： A power semiconductor device according to an embodiment of the present invention includes a first semiconductor layer of a first or second conductivity type, a second semiconductor layer of the first conductivity type formed on the first semiconductor layer, a third semiconductor layer of the second conductivity type selectively formed on a surface of the second semiconductor layer, at least one trench formed in a periphery of the third semiconductor layer on the surface of the second semiconductor layer, a depth of a bottom surface of the at least one trench being deeper than a bottom surface of the third semiconductor layer, and shallower than a top surface of the first semiconductor layer, and some or all of the at least one trench being in contact with a side surface of the third semiconductor layer, at least one insulator buried in the at least one trench, a first main electrode electrically connected to the first semiconductor layer, and a second main electrode electrically connected to the third semiconductor layer.

    摘要翻译： 根据本发明实施例的功率半导体器件包括第一或第二导电类型的第一半导体层，形成在第一半导体层上的第一导电类型的第二半导体层，第二导电类型的第三半导体层 选择性地形成在第二半导体层的表面上，形成在第二半导体层的表面上的第三半导体层的周边中的至少一个沟槽，至少一个沟槽的底表面的深度比底部 表面，并且比第一半导体层的顶表面浅，并且至少一个沟槽的一些或全部与第三半导体层的侧表面接触，至少一个绝缘体埋在第三半导体层 至少一个沟槽，与第一半导体层电连接的第一主电极和电连接的第二主电极 引导到第三半导体层。

    Power semiconductor device
    5.
    发明授权
    Power semiconductor device 有权
    功率半导体器件

    公开(公告)号：US08188521B2

    公开(公告)日：2012-05-29

    申请号：US12728823

    申请日：2010-03-22

    申请人： Wataru Saito ,  Syotaro Ono ,  Munehisa Yabuzaki ,  Nana Hatano ,  Miho Watanabe

    发明人： Wataru Saito ,  Syotaro Ono ,  Munehisa Yabuzaki ,  Nana Hatano ,  Miho Watanabe

    IPC分类号： H01L29/739 ,  H01L29/78 ,  H01L29/08

    CPC分类号： H01L29/7802 ,  H01L29/0619 ,  H01L29/0626 ,  H01L29/0634 ,  H01L29/0657 ,  H01L29/0696 ,  H01L29/0878 ,  H01L29/1095 ,  H01L29/4236 ,  H01L29/42368 ,  H01L29/4238 ,  H01L29/7808 ,  H01L29/7811 ,  H01L29/7828

    摘要： A power semiconductor device has semiconductor layers, including: first layer of first type; second and third layers respectively of first and second types alternately on the first layer; fourth layers of second type on the third layers; fifth layers of first type on the fourth layer; sixth and seventh layers respectively of second and first types alternately on the second and third layers; a first electrode connected to the first layer; an insulation film on fourth, sixth, and seventh layers; a second electrode on fourth, sixth, and seventh layers via the insulation film; and a third electrode joined to fourth and fifth layers, wherein the sixth layers are connected to the fourth layers and one of the third layers between two fourth layers, and an impurity concentration of the third layers below the sixth layers is higher than that of the third layers under the fourth layers.

    摘要翻译： 功率半导体器件具有半导体层，包括：第一层第一层; 第一和第二类型的第二和第三层交替地在第一层上; 第三层第四层第四层; 第四层第五层第一层; 第二层和第三层的第六层和第七层交替地在第二层和第三层上; 连接到第一层的第一电极; 第四层，第六层和第七层的绝缘膜; 经由绝缘膜的第四，第六和第七层上的第二电极; 以及连接到第四和第五层的第三电极，其中第六层连接到第四层，第二层之间的第三层之间的第二层之间的第二层和第三层之间的第三层的杂质浓度高于第六层的第三层 第四层第三层。

    Power semiconductor device with a low on resistence
    6.
    发明授权
    Power semiconductor device with a low on resistence 失效
    具有低导通电阻的功率半导体器件

    公开(公告)号：US08680608B2

    公开(公告)日：2014-03-25

    申请号：US12862490

    申请日：2010-08-24

    申请人： Wataru Saito ,  Syotaro Ono ,  Munehisa Yabuzaki ,  Nana Hatano ,  Miho Watanabe

    发明人： Wataru Saito ,  Syotaro Ono ,  Munehisa Yabuzaki ,  Nana Hatano ,  Miho Watanabe

    IPC分类号： H01L29/78

    CPC分类号： H01L29/7802 ,  H01L29/0634 ,  H01L29/0649 ,  H01L29/0653 ,  H01L29/0873 ,  H01L29/0878 ,  H01L29/1095 ,  H01L29/7843

    摘要： According to one embodiment, a power semiconductor device includes a second semiconductor layer of a first conductivity type and a third semiconductor layer of a second conductivity type periodically disposed repeatedly along a surface of the first semiconductor layer on a first semiconductor layer of the first conductivity type. A first main electrode is provided to electrically connect to the first semiconductor layer. A fourth semiconductor layer of the second conductivity type is provided to connect to the third semiconductor layer. Fifth semiconductor layers of the first conductivity type are selectively provided in the fourth semiconductor layer surface. A second main electrode is provided on a surface of the fourth and fifth semiconductor layers. A control electrode is provided on a surface of the fourth, fifth, and second semiconductor layers via a gate insulating film. First insulating films are provided by filling a trench made in the second semiconductor layer.

    摘要翻译： 根据一个实施例，功率半导体器件包括第一导电类型的第二半导体层和在第一导电类型的第一半导体层上沿着第一半导体层的表面周期性地重复设置的第二导电类型的第三半导体层 。 提供第一主电极以电连接到第一半导体层。 提供第二导电类型的第四半导体层以连接到第三半导体层。 在第四半导体层表面中选择性地设置第一导电类型的第五半导体层。 第二主电极设置在第四和第五半导体层的表面上。 控制电极经由栅极绝缘膜设置在第四，第五和第二半导体层的表面上。 通过填充在第二半导体层中制成的沟槽来提供第一绝缘膜。

    Semiconductor device and method of manufacturing the same
    7.
    发明授权
    Semiconductor device and method of manufacturing the same 失效
    半导体装置及其制造方法

    公开(公告)号：US07919824B2

    公开(公告)日：2011-04-05

    申请号：US12403881

    申请日：2009-03-13

    申请人： Syotaro Ono ,  Wataru Saito ,  Nana Hatano ,  Masaru Izumisawa ,  Yasuto Sumi ,  Hiroshi Ohta ,  Wataru Sekine ,  Miho Watanabe

    发明人： Syotaro Ono ,  Wataru Saito ,  Nana Hatano ,  Masaru Izumisawa ,  Yasuto Sumi ,  Hiroshi Ohta ,  Wataru Sekine ,  Miho Watanabe

    IPC分类号： H01L27/088

    CPC分类号： H01L29/66712 ,  H01L21/266 ,  H01L29/0615 ,  H01L29/0634 ,  H01L29/0638 ,  H01L29/0696 ,  H01L29/0878 ,  H01L29/1095 ,  H01L29/402 ,  H01L29/7395 ,  H01L29/7811

    摘要： A semiconductor device includes a super junction region that has a first-conductivity-type first semiconductor pillar region and a second-conductivity-type second semiconductor pillar region alternately provided on the semiconductor substrate. The first semiconductor pillar region and the second semiconductor pillar region in a termination region have a lamination form resulting from alternate lamination of the first semiconductor pillar region and the second semiconductor pillar region on the top surface of the semiconductor substrate. The first semiconductor pillar region and/or the second semiconductor pillar region at a corner part of the termination region exhibit an impurity concentration distribution such that a plurality of impurity concentration peaks appear periodically. The first semiconductor pillar region and/or the second semiconductor pillar region at a corner part of the termination region have an impurity amount such that it becomes smaller as being closer to the circumference of the corner part.

    摘要翻译： 半导体器件包括具有交替设置在半导体衬底上的第一导电型第一半导体柱区域和第二导电型第二半导体柱区域的超结区域。 终端区域中的第一半导体柱区域和第二半导体柱区域具有由半导体衬底的顶表面上的第一半导体柱区域和第二半导体柱区域的交替层叠形成的叠层形式。 终端区域的角部处的第一半导体柱区域和/或第二半导体柱区域显示杂质浓度分布，使得多个杂质浓度峰值周期性出现。 终端区域的角部处的第一半导体柱区域和/或第二半导体柱区域具有使得随着角部更靠近圆周而变小的杂质量。

    SEMICONDUCTOR DEVICE
    8.
    发明申请
    SEMICONDUCTOR DEVICE 有权
    半导体器件

    公开(公告)号：US20100187604A1

    公开(公告)日：2010-07-29

    申请号：US12692527

    申请日：2010-01-22

    申请人： SYOTARO ONO ,  Wataru Saito ,  Nana Hatano ,  Hiroshi Ohta ,  Miho Watanabe

    发明人： SYOTARO ONO ,  Wataru Saito ,  Nana Hatano ,  Hiroshi Ohta ,  Miho Watanabe

    IPC分类号： H01L29/78

    CPC分类号： H01L29/7802 ,  H01L29/0634 ,  H01L29/1095 ,  H01L29/66712 ,  H01L29/7397

    摘要： A semiconductor device includes a semiconductor substrate of a first conductivity type, a first semiconductor region of the first conductivity type on the semiconductor substrate, and a plurality of second semiconductor regions of a second conductivity type disposed separately in the first semiconductor region. A difference between a charge quantity expressed by an integral value of a net activated doping concentration in the second semiconductor regions in the surface direction of the semiconductor substrate and a charge quantity expressed by an integral value of a net activated doping concentration in the first semiconductor region in the surface direction of the semiconductor substrate is always a positive quantity and becomes larger from the depth of the first junction plane to a depth of a second junction plane on an opposite side from the first junction plane.

    摘要翻译： 半导体器件包括第一导电类型的半导体衬底，半导体衬底上的第一导电类型的第一半导体区域和分开设置在第一半导体区域中的多个第二导电类型的第二半导体区域。 由半导体衬底的表面方向上的第二半导体区域中的净活化掺杂浓度的积分值表示的电荷量与由第一半导体区域中的净活化掺杂浓度的积分值表示的电荷量之间的差异 在半导体基板的表面方向总是为正量，并且从第一接合面的深度到与第一接合面相反的一侧的第二接合面的深度变得更大。

    Semiconductor device
    9.
    发明授权
    Semiconductor device 有权
    半导体器件

    公开(公告)号：US08159023B2

    公开(公告)日：2012-04-17

    申请号：US12692527

    申请日：2010-01-22

    申请人： Syotaro Ono ,  Wataru Saito ,  Nana Hatano ,  Hiroshi Ohta ,  Miho Watanabe

    发明人： Syotaro Ono ,  Wataru Saito ,  Nana Hatano ,  Hiroshi Ohta ,  Miho Watanabe

    IPC分类号： H01L29/00

    CPC分类号： H01L29/7802 ,  H01L29/0634 ,  H01L29/1095 ,  H01L29/66712 ,  H01L29/7397

    摘要： A semiconductor device includes a semiconductor substrate of a first conductivity type, a first semiconductor region of the first conductivity type on the semiconductor substrate, and a plurality of second semiconductor regions of a second conductivity type disposed separately in the first semiconductor region. A difference between a charge quantity expressed by an integral value of a net activated doping concentration in the second semiconductor regions in the surface direction of the semiconductor substrate and a charge quantity expressed by an integral value of a net activated doping concentration in the first semiconductor region in the surface direction of the semiconductor substrate is always a positive quantity and becomes larger from the depth of the first junction plane to a depth of a second junction plane on an opposite side from the first junction plane.

    摘要翻译： 半导体器件包括第一导电类型的半导体衬底，半导体衬底上的第一导电类型的第一半导体区域和分开设置在第一半导体区域中的多个第二导电类型的第二半导体区域。 由半导体衬底的表面方向上的第二半导体区域中的净活化掺杂浓度的积分值表示的电荷量与由第一半导体区域中的净活化掺杂浓度的积分值表示的电荷量之间的差异 在半导体基板的表面方向总是为正量，并且从第一接合面的深度到与第一接合面相反的一侧的第二接合面的深度变得更大。

    Power semiconductor device
    10.
    发明授权
    Power semiconductor device 失效
    功率半导体器件

    公开(公告)号：US08030706B2

    公开(公告)日：2011-10-04

    申请号：US12540192

    申请日：2009-08-12

    申请人： Miho Watanabe ,  Masaru Izumisawa ,  Yasuto Sumi ,  Hiroshi Ohta ,  Wataru Sekine ,  Wataru Saito ,  Syotaro Ono ,  Nana Hatano

    发明人： Miho Watanabe ,  Masaru Izumisawa ,  Yasuto Sumi ,  Hiroshi Ohta ,  Wataru Sekine ,  Wataru Saito ,  Syotaro Ono ,  Nana Hatano

    IPC分类号： H01L29/66

    CPC分类号： H01L29/7811 ,  H01L29/0634 ,  H01L29/1095 ,  H01L29/7802

    摘要： A semiconductor device according to an embodiment of the present invention includes a device part and a terminal part. The device includes a first semiconductor layer, and second and third semiconductor layers formed on the first semiconductor layer, and alternately arranged along a direction parallel to a surface of the first semiconductor layer, wherein the device part is provided with a first region and a second region, each of which includes at least one of the second semiconductor layers and at least one of the third semiconductor layers, and with regard to a difference value ΔN (=NA−NB) obtained by subtracting an impurity amount NB per unit length of each of the third semiconductor layers from an impurity amount NA per unit length of each of the second semiconductor layers, a difference value ΔNC1 which is the difference value ΔN in the first region of the device part, a difference value ΔNC2 which is the difference value ΔN in the second region of the device part, and a difference value ΔNT which is the difference value ΔN in the terminal part satisfy a relationship of ΔNC1>ΔNT>ΔNC2.

    摘要翻译： 根据本发明实施例的半导体器件包括器件部分和端子部分。 该器件包括第一半导体层，以及形成在第一半导体层上的第二和第三半导体层，并且沿着与第一半导体层的表面平行的方向交替布置，其中器件部分设置有第一区域和第二半导体层 区域，其中每一个包括第二半导体层和至少一个第三半导体层中的至少一个，并且关于通过从每单位长度减去杂质量NB获得的差值Dgr; N（= NA-NB） 从每个第二半导体层的每单位长度的杂质量NA中的每个第三半导体层的差分值＆Dgr; NC1，其是器件部分的第一区域中的差值＆Dgr; N，差值＆Dgr ;作为装置部分的第二区域中的差值Dgr; N的NC2，作为终端部分中的差值Dgr; N的差值＆Dgr; NT满足关系 的＆Dgr; NC1>＆Dgr; NT>＆Dgr; NC2。