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    • 92. 发明申请
    • SEMICONDUCTOR APPARATUS
    • US20090090968A1
    • 2009-04-09
    • US12243280
    • 2008-10-01
    • Syotaro ONOWataru Saito
    • Syotaro ONOWataru Saito
    • H01L29/78
    • H01L29/7811H01L29/0619H01L29/0623H01L29/0634H01L29/0638H01L29/0696H01L29/404
    • A semiconductor apparatus includes: a semiconductor layer of a first conductivity type; a first main electrode provided on a frontside of the semiconductor layer; a second main electrode provided on a backside of the semiconductor layer, the backside being opposite to the frontside; a plurality of semiconductor regions of a second conductivity type provided in a surface portion of the semiconductor layer in a edge termination region outside a device region in which a main current path is formed in a vertical direction between the first main electrode and the second main electrode; and a plurality of buried semiconductor regions of the second conductivity type provided in the semiconductor layer in the edge termination region, spaced from the semiconductor regions, and spaced from each other. The buried semiconductor regions provided substantially at the same depth from the frontside of the semiconductor layer are numbered as first, second, . . . , n-th, sequentially from the one nearer to the device region, the n-th buried semiconductor regions provided at different depths from the frontside of the semiconductor layer are displaced toward the device region relative to the corresponding n-th semiconductor region, and the buried semiconductor region located deeper from the frontside of the semiconductor layer is displaced more greatly toward the device region.
    • 半导体装置包括:第一导电类型的半导体层; 设置在所述半导体层的前侧的第一主电极; 设置在所述半导体层的背面的第二主电极,所述背面与所述前侧相反; 在第一主电极和第二主电极之间沿垂直方向形成有主电流路径的器件区域外的边缘终端区域的半导体层的表面部分中设置的多个第二导电类型的半导体区域 ; 以及设置在边缘终端区域中的半导体层中的与半导体区域间隔开并且彼此间隔开的第二导电类型的多个掩埋半导体区域。 基本上与半导体层的前侧相同的深度设置的掩埋半导体区域被编号为第一,第二。 。 。 第n个从靠近器件区的一个顺序地,与半导体层的前侧不同的深度设置的第n个埋入半导体区域相对于相应的第n个半导体区域朝向器件区域移位, 位于半导体层的前侧较深的掩埋半导体区域朝向器件区域更大地移位。
    • 93. 发明授权
    • Semiconductor device and method of fabricating the same
    • 半导体装置及其制造方法
    • US07462909B2
    • 2008-12-09
    • US11453997
    • 2006-06-16
    • Wataru SaitoIchiro Omura
    • Wataru SaitoIchiro Omura
    • H01L29/76
    • H01L29/7802H01L29/0634H01L29/1095H01L29/66712
    • First semiconductor pillar layers of a first conduction type and second semiconductor pillar layers of a second conduction type are arranged on a first semiconductor layer of the first conduction type laterally, periodically and alternately at a first period to form a first pillar layer. Third semiconductor pillar layers of the first conduction type and fourth semiconductor pillar layers of the second conduction type are arranged on the first pillar layer laterally, periodically and alternately at a second period smaller than the first period to form a second pillar layer. A semiconductor base layer of the second conduction type is formed on a surface of the fourth semiconductor pillar layer. A semiconductor diffused layer of the first conduction type is formed on a surface of the semiconductor base layer.
    • 第一导电类型的第一半导体柱层和第二导电类型的第二半导体柱层被布置在第一导电类型的第一半导体层上,在第一周期上周期性地和周期性地交替地形成第一柱层。 第二导电类型的第一导电类型的第三半导体柱层和第二导电类型的第四半导体柱层在第一柱层上以比第一周期小的周期性地交替布置在第一柱层上,以形成第二柱层。 在第四半导体柱层的表面上形成第二导电类型的半导体基底层。 在半导体基底层的表面上形成第一导电类型的半导体扩散层。
    • 95. 发明申请
    • POWER SEMICONDUCTOR DEVICE
    • 功率半导体器件
    • US20080246085A1
    • 2008-10-09
    • US12050405
    • 2008-03-18
    • Wataru SaitoSyotaro Ono
    • Wataru SaitoSyotaro Ono
    • H01L29/78
    • H01L29/7802H01L29/0615H01L29/0619H01L29/0634H01L29/0638H01L29/0878H01L29/1095H01L29/42368H01L29/7811
    • A power semiconductor device includes: a first semiconductor layer; a second semiconductor layer and a third semiconductor layer that are provided above the first semiconductor layer and alternatively arranged along a direction parallel to an upper surface of the first semiconductor layer; a plurality of fourth semiconductor layers provided on some of immediately upper regions of the third semiconductor layers and connected to the third semiconductor layer; a fifth semiconductor layer; a control electrode; a gate insulating film; a first main electrode; and a second main electrode. An array period of the fourth semiconductor layers is larger than an array period of the second semiconductor layers. A thickness of a part of the gate insulating film disposed in an immediate upper region of a central portion between the fourth semiconductor layers is thicker than a thickness of a part of the gate insulating film disposed in the immediate upper region of the fourth semiconductor layer. Sheet impurity concentrations of the second semiconductor layer and the third semiconductor layer that are located in the central portion are higher than a sheet impurity concentration of the third semiconductor layer disposed in an immediately lower region of the fourth semiconductor layer.
    • 功率半导体器件包括:第一半导体层; 第二半导体层和第三半导体层,其设置在所述第一半导体层的上方,并且沿着与所述第一半导体层的上表面平行的方向配置; 多个第四半导体层,设置在所述第三半导体层的一些上部区域上,并连接到所述第三半导体层; 第五半导体层; 控制电极; 栅极绝缘膜; 第一主电极; 和第二主电极。 第四半导体层的阵列周期大于第二半导体层的阵列周期。 设置在第四半导体层之间的中心部分的直接上部区域中的栅极绝缘膜的一部分的厚度比设置在第四半导体层的直接上部区域中的栅极绝缘膜的一部分的厚度厚。 位于中心部分的第二半导体层和第三半导体层的片状杂质浓度高于设置在第四半导体层的紧邻下部区域中的第三半导体层的片状杂质浓度。