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    • 56. 发明专利
    • Semiconductor device
    • 半导体器件
    • JPS59188975A
    • 1984-10-26
    • JP6326483
    • 1983-04-11
    • Seiko Epson Corp
    • IWAMATSU SEIICHI
    • H01L29/78H01L29/49
    • H01L29/495
    • PURPOSE:To keep high the melting point of a gate electrode and improve the productivity as a low resistance by a method wherein the gate electrode of the MOS semiconductor device is made of Ti, and the source and drain are formed by self-alignment type with the Ti gate as a mask. CONSTITUTION:A field oxide film 2 is formed on the surface of an Si wafer 1 by thermal oxidation, holes are bored in the oxide film 2 and the regions serving as the source, drain, and gate by photoetching method. Next, a gate oxide film 3 is formed by thermal oxidation, and a Ti film 4 is formed to a fixed thickness by the thermal decomposition of Ti chloride by pressure reduction CVD method, thus forming the Ti gate electrode 4 by photoetching. Then, the source region 5 and the drain 6 are formed by self-alignment type by ion implantation with the electrode 4 as a mask, and then the junction region therebetween is activated by means of lamp annealing. Then, the melting point of the gate electrode is kept high and made low resistant, resulting in the improvement of the productivity.
    • 目的:为了保持栅电极的熔点高,通过其中MOS半导体器件的栅电极由Ti制成的方法提高作为低电阻的生产率,源极和漏极由自对准型与 Ti门作为掩模。 构成:通过热氧化在Si晶片1的表面上形成场氧化膜2,通过光刻法在氧化膜2和用作源极,漏极和栅极的区域中钻孔。 接下来,通过热氧化形成栅极氧化膜3,并且通过减压CVD法通过氯化钛的热分解形成固定厚度的Ti膜4,由此通过光刻形成Ti栅电极4。 然后,通过离子注入,通过自对准型电极4作为掩模,形成源极区域5和漏极6,然后通过灯退火激活源极区域5和漏极6之间的连接区域。 然后,栅电极的熔点保持较高并且耐低电阻,从而提高了生产率。