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    • 8. 发明授权
    • Semiconductor device and method for manufacturing the same
    • 半导体装置及其制造方法
    • US07994585B2
    • 2011-08-09
    • US12318861
    • 2009-01-09
    • Isamu Nishimura
    • Isamu Nishimura
    • H01L21/70
    • H01L21/823864H01L29/665H01L29/6659H01L29/7833H01L29/7843H01L2924/0002H01L2924/00
    • A semiconductor device according to the present invention includes: a semiconductor layer; an element separating portion, formed in a top layer portion of the semiconductor layer and separating, in the semiconductor layer, a first element forming region for forming a first conductive type MOSFET and a second element forming region for forming a second conductive type MOSFET; a first gate insulating film, selectively formed on a top surface of the semiconductor layer in the first element forming region; a first gate electrode, formed on the first gate insulating film; a first sidewall, formed at a periphery of the first gate insulating film and the first gate electrode; a second gate insulating film, selectively formed on a top surface of the semiconductor layer in the second element forming region; a second gate electrode, formed on the second gate insulating film; and a second sidewall, formed at a periphery of the second gate insulating film and the second gate electrode. The first sidewall includes: a base, contacting the top surface of the semiconductor layer; and a main body, formed on the base and protruding laterally beyond a peripheral edge of the base.
    • 根据本发明的半导体器件包括:半导体层; 元件分离部分,形成在所述半导体层的顶层部分中,并且在所述半导体层中分离用于形成第一导电型MOSFET的第一元件形成区域和用于形成第二导电型MOSFET的第二元件形成区域; 第一栅极绝缘膜,选择性地形成在第一元件形成区域中的半导体层的顶表面上; 形成在第一栅极绝缘膜上的第一栅电极; 第一侧壁,形成在第一栅极绝缘膜和第一栅电极的周边; 第二栅极绝缘膜,选择性地形成在所述第二元件形成区域中的所述半导体层的顶表面上; 形成在所述第二栅极绝缘膜上的第二栅电极; 以及形成在所述第二栅极绝缘膜和所述第二栅电极的周围的第二侧壁。 第一侧壁包括:与半导体层的顶表面接触的基底; 以及主体,形成在基部上并且横向突出超过基部的周缘。