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    • 17. 发明授权
    • Spacerless fin device with reduced parasitic resistance and capacitance and method to fabricate same
    • 具有降低的寄生电阻和电容的无隔离鳍片器件和制造相同的方法
    • US09472651B2
    • 2016-10-18
    • US14017461
    • 2013-09-04
    • GlobalFoundries U.S. 2 LLC
    • Effendi Leobandung
    • H01L29/78H01L21/36H01L29/66H01L27/12H01L21/84H01L29/417
    • H01L29/66795H01L21/845H01L27/1211H01L29/41791H01L29/66545
    • A structure includes a substrate having an insulator layer and a plurality of elongated semiconductor fin structures disposed on a surface of the insulator layer. The fin structures are disposed substantially parallel to one another. The structure further includes a plurality of elongated sacrificial gate structures each comprised of silicon nitride. The sacrificial gate structures are disposed substantially parallel to one another and orthogonal to the plurality of fin structures, where a portion of each of a plurality of adjacent fin structures is embedded within one of the sacrificial gate structures leaving other portions exposed between the sacrificial gate structures. The structure further includes a plurality of semiconductor source/drain (S/D) structures disposed over the exposed portions of the fin structures between the sacrificial gate structures. The embodiments eliminate a need to form a conventional spacer on the fin structures. A method to fabricate the structure is also disclosed.
    • 一种结构包括具有绝缘体层的衬底和设置在绝缘体层的表面上的多个细长的半导体鳍结构。 翅片结构基本上彼此平行地设置。 该结构还包括多个由氮化硅构成的细长的牺牲栅极结构。 牺牲栅极结构彼此基本平行并且与多个翅片结构正交地布置,其中多个相邻翅片结构中的每一个的一部分嵌入在牺牲栅极结构之一内,而留下牺牲栅极结构之间的其它部分 。 该结构还包括多个半导体源极/漏极(S / D)结构,其设置在牺牲栅极结构之间的翅片结构的暴露部分之上。 这些实施例消除了在翅片结构上形成常规间隔件的需要。 还公开了制造该结构的方法。