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    • 9. 发明授权
    • Semiconductor device and manufacturing method thereof
    • 半导体装置及其制造方法
    • US07202149B2
    • 2007-04-10
    • US11010389
    • 2004-12-14
    • Saishi FujikawaEtsuko AsanoTatsuya AraoTakashi YokoshimaTakuya MatsuoHidehito Kitakado
    • Saishi FujikawaEtsuko AsanoTatsuya AraoTakashi YokoshimaTakuya MatsuoHidehito Kitakado
    • H01L21/4763H01L21/3205
    • H01L29/78621H01L27/1237H01L29/42384H01L29/49H01L29/66757
    • A semiconductor device of which manufacturing steps can be simplified by doping impurities at a time, and a manufacturing method thereof. The manufacturing method of the semiconductor device comprises the steps of: forming first and second semiconductor layers over a substrate, forming a first insulating film over the first and second semiconductor layers, forming first and second conductive films thereover, forming a first gate electrode having a stacked layer of the first and second conductive films, in which a portion of the first conductive film is exposed from the second conductive film, over the first semiconductor layer with the first insulating film interposed therebetween, forming a second insulating film over the first insulating film, forming third and fourth conductive films thereover, and forming a second gate electrode having a stacked layer of the third and fourth conductive films, in which a portion of the third conductive film is exposed from the fourth conductive film, over the second semiconductor layer with the first and second insulating films interposed therebetween.
    • 通过一次掺杂杂质可以简化制造步骤的半导体器件及其制造方法。 半导体器件的制造方法包括以下步骤:在衬底上形成第一和第二半导体层,在第一和第二半导体层上形成第一绝缘膜,在其上形成第一和第二导电膜,形成具有 将第一导电膜的一部分从第二导电膜露出的第一导电膜和第二导电膜的第一绝缘膜在第一绝缘膜之上形成第二绝缘膜, 在其上形成第三和第四导电膜,并且形成第二栅电极,其具有第三导电膜和第四导电膜的堆叠层,其中第三导电膜的一部分从第四导电膜暴露在第二半导体层上, 其间插入第一绝缘膜和第二绝缘膜。