会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 91. 发明申请
    • TAPERED FIN FIELD EFFECT TRANSISTOR
    • 锥形场效应晶体管
    • US20140308806A1
    • 2014-10-16
    • US14021165
    • 2013-09-09
    • International Business Machines Corporation
    • Josephine B. ChangMichael A. GuillornChung-Hsun LinRyan M. MartinJeffrey W. Sleight
    • H01L21/306
    • H01L29/7853H01L21/306H01L21/3065H01L29/66795Y02P80/30
    • A tapered fin field effect transistor can be employed to provide enhanced electrostatic control of the channel. A stack of a semiconductor fin and a dielectric fin cap having substantially vertical sidewall surfaces is formed on an insulator layer. The sidewall surfaces of the semiconductor fin are passivated by an etch residue material from the dielectric fin cap with a tapered thickness profile such that the thickness of the etch residue material decreased with distance from the dielectric fin cap. An etch including an isotropic etch component is employed to remove the etch residue material and to physically expose lower portions of sidewalls of the semiconductor fin. The etch laterally etches the semiconductor fin and forms a tapered region at a bottom portion. The reduced lateral width of the bottom portion of the semiconductor fin allows greater control of the channel for a fin field effect transistor.
    • 可以使用锥形鳍式场效应晶体管来提供通道的增强的静电控制。 在绝缘体层上形成具有基本上垂直的侧壁表面的半导体鳍片和介电鳍片盖的叠层。 半导体鳍片的侧壁表面被具有锥形厚度轮廓的介电翅片帽的蚀刻残余物材料钝化,使得蚀刻残余物质的厚度随着与介电翅片盖的距离而减小。 使用包括各向同性蚀刻部件的蚀刻来去除蚀刻残留物并且物理地暴露半导体鳍片的侧壁的下部。 蚀刻横向蚀刻半导体鳍片并在底部形成锥形区域。 半导体鳍片的底部的减小的横向宽度允许更好地控制鳍状场效应晶体管的沟道。