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    • 49. 发明申请
    • SEMICONDUCTOR-INSULATOR-SILICIDE CAPACITOR
    • 半导体 - 绝缘体 - 硅化物电容器
    • US20080258197A1
    • 2008-10-23
    • US11737844
    • 2007-04-20
    • Douglas D. CoolbaughZhong-Xiang HeRobert M. RasselRichard J. RasselStephen A. St Onge
    • Douglas D. CoolbaughZhong-Xiang HeRobert M. RasselRichard J. RasselStephen A. St Onge
    • H01L21/20H01L29/04
    • H01L29/94
    • A semiconductor-insulator-silicide (SIS) capacitor is formed by depositing a thin silicon containing layer on a salicide mask dielectric layer, followed by lithographic patterning of the stack and metallization of the thin silicon containing layer and other exposed semiconductor portions of a semiconductor substrate. The thin silicon containing layer is fully reacted during metallization and consequently converted to a silicide alloy layer, which is a first electrode of a capacitor. The salicide mask dielectric layer is the capacitor dielectric. The second electrode of the capacitor may be a doped polycrystalline silicon containing layer, a doped single crystalline semiconductor region, or another doped polycrystalline silicon containing layer disposed on the doped polycrystalline silicon containing layer. The SIS insulator may further comprise other dielectric layers and conductive layers to increase capacitance per area.
    • 半导体绝缘体硅化物(SIS)电容器通过在硅化物掩模介电层上沉积薄硅层而形成,随后叠层的平版印刷图案化以及薄硅层和半导体衬底的其它暴露的半导体部分的金属化 。 含硅薄层在金属化期间完全反应,因此转化为硅化物合金层,其是电容器的第一电极。 硅化物掩模介电层是电容器电介质。 电容器的第二电极可以是掺杂的多晶硅含硅层,掺杂的单晶半导体区域或设置在掺杂的多晶硅含硅层上的另一掺杂的多晶硅含硅层。 SIS绝缘体还可以包括其它电介质层和导电层,以增加每面积的电容。