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    • 1. 发明授权
    • Method of manufacturing a semiconductor integrated circuit device
    • 制造半导体集成电路器件的方法
    • US4662057A
    • 1987-05-05
    • US759441
    • 1985-07-26
    • Hideki YasuokaYasunobu TanizakiAkira MuramatsuNorio Anzai
    • Hideki YasuokaYasunobu TanizakiAkira MuramatsuNorio Anzai
    • H01L29/78H01L21/76H01L21/8249H01L27/00H01L27/06H01L27/092H01L21/425
    • H01L21/76H01L21/8249H01L27/0623H01L27/092
    • The present invention relates to a Bi-CMOS.IC, characterized by comprising a semiconductor substrate of a first conductivity type, and a semiconductor layer of a second conductivity type which is epitaxially grown on one major surface of said semiconductor substrate and which is electrically isolated into a plurality of semiconductor island regions by a thick surface oxide film formed by local oxidation and a semiconductor diffused layer of the first conductivity type formed between said oxide film and said substrate; a bipolar type semiconductor element being formed in one of said island regions, while CMOS type semiconductor elements are formed in the other island regions; the thick surface oxide film formed by the local oxidation being included between a base region and a collector contact region within said one island region formed with said bipolar type semiconductor element, while gate electrodes made of a semiconductor are disposed over said other island regions formed with said CMOS type semiconductor elements.
    • 本发明涉及一种Bi-CMOS.IC,其特征在于包括第一导电类型的半导体衬底和第二导电类型的半导体层,其外延生长在所述半导体衬底的一个主表面上并且被电隔离 通过局部氧化形成的厚表面氧化膜和形成在所述氧化膜和所述衬底之间的第一导电类型的半导体扩散层而形成多个半导体岛区域; 在所述岛状区域之一上形成双极型半导体元件,在其他岛状区域形成有CMOS型半导体元件; 由局部氧化形成的厚表面氧化膜包括在形成有所述双极型半导体元件的所述一个岛状区域内的基极区域与集电极接触区域之间,而由半导体制成的栅极电极设置在形成有 所述CMOS型半导体元件。