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    • 6. 发明申请
    • VERTICAL TUNNELING FIELD-EFFECT TRANSISTOR CELL AND FABRICATING THE SAME
    • 垂直隧道场效应晶体管和制造它们
    • US20160064524A1
    • 2016-03-03
    • US14937445
    • 2015-11-10
    • Taiwan Semiconductor Manufacturing Company, Ltd.
    • Harry-Hak-Lay ChuangCheng-Cheng KuoChi-Wen LiuMing Zhu
    • H01L29/66H01L29/417
    • H01L29/66666H01L29/0676H01L29/41775H01L29/66356H01L29/7391
    • A tunneling field-effect transistor (TFET) device is disclosed. A frustoconical protrusion structure is disposed over the substrate and protrudes out of the plane of substrate. A drain region is disposed over the substrate adjacent to the frustoconical protrusion structure and extends to a bottom portion of the frustoconical protrusion structure as a raised drain region. A gate stack is disposed over the substrate. The gate stack has a planar portion, which is parallel to the surface of substrate and a gating surface, which wraps around a middle portion of the frustoconical protrusion structure, including overlapping with the raised drain region. An isolation dielectric layer is disposed between the planar portion of the gate stack and the drain region. A source region is disposed as a top portion of the frustoconical protrusion structure, including overlapping with a top portion of the gating surface of the gate stack.
    • 公开了隧道场效应晶体管(TFET)器件。 截头圆锥形突起结构设置在衬底上并突出到衬底平面之外。 漏极区域设置在与截头圆锥形突起结构相邻的衬底上,并延伸到截头圆锥形突起结构的底部作为升高的漏极区域。 栅极堆叠设置在衬底上。 栅极堆叠具有平行于衬底的表面的平坦部分和围绕截头圆锥形突出结构的中间部分包围的浇口表面,包括与凸起的漏极区域重叠。 隔离电介质层设置在栅极堆叠的平面部分和漏极区之间。 源极区域被设置为截头圆锥形突起结构的顶部,包括与栅极叠层的栅极表面的顶部重叠。