发明名称 PRODUCTION OF MOS TYPE INTEGRATED CIRCUIT
摘要 PURPOSE:To increase the threshold voltage of gates and obtain the memory cell transistors of ROM of higher scale of integration and shorter write time of memory contents by selectively increasing the impurity concentration of a semiconductor substrate.
申请公布号 JPS5333076(A) 申请公布日期 1978.03.28
申请号 JP19760107238 申请日期 1976.09.09
申请人 TOKYO SHIBAURA ELECTRIC CO 发明人 TAKEI SAKAE
分类号 H01L27/112;G11C17/00;G11C17/08;G11C17/12;G11C17/14;H01L21/8246;H01L21/8247;H01L29/788;H01L29/792 主分类号 H01L27/112
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