Thin-film transistor with suppressed off-current and V.sub.th
    72.
    发明授权
    Thin-film transistor with suppressed off-current and V.sub.th 失效
    具有抑制截止电流和Vth + B的薄膜晶体管

    公开(公告)号:US5440168A

    公开(公告)日:1995-08-08

    申请号:US198058

    申请日:1994-02-18

    CPC分类号: H01L29/66765 H01L29/78678

    摘要: A thin-film transistor (3, 5a, 5b and 5c) is covered with a first silicon nitride film (9) formed by an LPCVD method. A first silicon oxide film (6) is formed on the first silicon nitride film (9). A second silicon nitride film (7), i.e., passivation film which is formed by a plasma CVD method is provided on the first silicon oxide film (6). In addition, the thin-film transistor includes a semiconductor layer covering a gate electrode. The semiconductor layer includes source, drain and active regions. The active region preferably includes a smaller amount of fluorine than the gate electrode.

    摘要翻译: 薄膜晶体管(3,5a,5b和5c)被用LPCVD方法形成的第一氮化硅膜(9)覆盖。 在第一氮化硅膜(9)上形成第一氧化硅膜(6)。 在第一氧化硅膜(6)上设置第二氮化硅膜(7),即通过等离子体CVD法形成的钝化膜。 此外,薄膜晶体管包括覆盖栅电极的半导体层。 半导体层包括源极,漏极和有源区。 有源区优选包括比栅电极少的氟。