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    • 10. 发明授权
    • Fabrication of FinFETs with multiple fin heights
    • 具有多个翅片高度的FinFET的制造
    • US07612405B2
    • 2009-11-03
    • US11714644
    • 2007-03-06
    • Chen-Hua YuChen-Nan YehChu-Yun FuYu-Rung Hsu
    • Chen-Hua YuChen-Nan YehChu-Yun FuYu-Rung Hsu
    • H01L29/76
    • H01L29/785H01L21/823431H01L27/0886H01L29/66795
    • A semiconductor structure includes a first semiconductor strip extending from a top surface of the semiconductor substrate into the semiconductor substrate, wherein the first semiconductor strip has a first height. A first insulating region is formed in the semiconductor substrate and surrounding a bottom portion of the first semiconductor strip, wherein the first insulating region has a first top surface lower than a top surface of the first semiconductor strip. A second semiconductor strip extends from a top surface of the semiconductor substrate into the semiconductor substrate, wherein the second semiconductor strip has a second height greater than the first height. A second insulating region is formed in the semiconductor substrate and surrounding a bottom portion of the second semiconductor strip, wherein the second insulating region has a second top surface lower than the first top surface, and wherein the first and the second insulating regions have substantially same thicknesses.
    • 半导体结构包括从半导体衬底的顶表面延伸到半导体衬底中的第一半导体条,其中第一半导体条具有第一高度。 第一绝缘区域形成在半导体衬底中并围绕第一半导体条的底部,其中第一绝缘区具有比第一半导体条的顶表面低的第一顶表面。 第二半导体条从半导体衬底的顶表面延伸到半导体衬底中,其中第二半导体条的第二高度大于第一高度。 第二绝缘区域形成在半导体衬底中并围绕第二半导体条的底部,其中第二绝缘区域具有比第一顶表面低的第二顶表面,并且其中第一绝缘区域和第二绝缘区域基本相同 厚度