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    • 1. 发明授权
    • Semiconductor device
    • 半导体器件
    • US07190010B2
    • 2007-03-13
    • US11011140
    • 2004-12-15
    • Takachika ImatoHiroshi Matsuoka
    • Takachika ImatoHiroshi Matsuoka
    • H01L31/113
    • H01L21/28587H01L29/42316
    • A semiconductor device includes a semiconductor substrate, a T-shaped gate electrode, a moisture-proof insulating film, and an interlayer dielectric film. The T-shaped gate electrode has a leg portion joined to the semiconductor substrate and an overhanging head portion spaced from the semiconductor substrate. The T-shaped gate electrode includes a gate metal containing a material reactive with water. The moisture-proof insulating film is located only in the vicinity of the leg portion and covers a side surface of the leg portion of the T-shaped gate electrode. The interlayer dielectric film is located between the overhanging head portion of the T-shaped gate electrode and the semiconductor substrate and has a dielectric constant that is lower than that of the moisture-proof insulating film.
    • 半导体器件包括半导体衬底,T形栅电极,防潮绝缘膜和层间绝缘膜。 T形栅极具有连接到半导体衬底的腿部和与半导体衬底间隔开的悬垂头部。 T形栅电极包括含有与水反应的材料的栅极金属。 防潮绝缘膜仅位于腿部附近,并且覆盖T形栅电极的腿部的侧表面。 层间电介质膜位于T形栅电极的伸出头部与半导体基板之间,其介电常数比防湿绝缘膜低。