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    • 14. 发明授权
    • High performance 3D FET structures, and methods for forming the same using preferential crystallographic etching
    • 高性能3D FET结构,以及使用优先晶体蚀刻形成相同方法
    • US07884448B2
    • 2011-02-08
    • US12500396
    • 2009-07-09
    • Thomas W. DyerHaining S. Yang
    • Thomas W. DyerHaining S. Yang
    • H01L29/04
    • H01L21/823807H01L21/823821H01L27/0922H01L27/1211H01L29/04H01L29/66795H01L29/7853
    • The present invention relates to high performance three-dimensional (3D) field effect transistors (FETs). Specifically, a 3D semiconductor structure having a bottom surface oriented along one of a first set of equivalent crystal planes and multiple additional surfaces oriented along a second, different set of equivalent crystal planes can be used to form a high performance 3D FET with carrier channels oriented along the second, different set of equivalent crystal planes. More importantly, such a 3D semiconductor structure can be readily formed over the same substrate with an additional 3D semiconductor structure having a bottom surface and multiple additional surfaces all oriented along the first set of equivalent crystal planes. The additional 3D semiconductor structure can be used to form an additional 3D FET, which is complementary to the above-described 3D FET and has carrier channels oriented along the first set of equivalent crystal planes.
    • 本发明涉及高性能三维(3D)场效应晶体管(FET)。 具体而言,可以使用具有沿着第一组等效晶面中的一个取向的底表面和沿着第二不同组的等效晶面取向的多个附加表面的3D半导体结构,以形成具有载体通道定向的高性能3D FET 沿着第二个不同组的等效晶面。 更重要的是,这种3D半导体结构可以容易地在具有底表面和多个附加表面的附加3D半导体结构的同一衬底上形成,所述另外的三维半导体结构全部沿着第一组等效晶面取向。 附加的3D半导体结构可以用于形成附加的3D FET,其与上述3D FET互补,并且具有沿着第一组等效晶面取向的载流子通道。
    • 16. 发明授权
    • Partially gated FINFET with gate dielectric on only one sidewall
    • 部分选通FINFET,仅在一个侧壁上具有栅极电介质
    • US07859044B2
    • 2010-12-28
    • US11782079
    • 2007-07-24
    • Robert C. WongHaining S. Yang
    • Robert C. WongHaining S. Yang
    • H01L29/78H01L27/12
    • H01L29/66795H01L21/845H01L27/11H01L27/1108H01L27/1211H01L29/785
    • A gate dielectric and a gate conductor layer are formed on sidewalls of at least one semiconductor fin. The gate conductor layer is patterned so that a gate electrode is formed on a first sidewall of a portion of the semiconductor fin, while a second sidewall on the opposite side of the first sidewall is not controlled by the gate electrode. A partially gated finFET, that is, a finFET with a gate electrode on the first sidewall and without a gate electrode on the second sidewall is thus formed. Conventional dual gate finFETs may be formed with the inventive partially gated finFETs on the same substrate to provide multiple finFETs having different on-current in the same circuit such as an SRAM circuit.
    • 在至少一个半导体鳍片的侧壁上形成栅极电介质和栅极导体层。 图案化栅极导体层,使得栅极电极形成在半导体鳍片的一部分的第一侧壁上,而在第一侧壁的相对侧上的第二侧壁不受栅电极控制。 因此,形成了部分选通的finFET,即在第一侧壁上具有栅电极且在第二侧壁上没有栅电极的finFET。 传统的双栅极finFET可以在同一衬底上与本发明的部分选通的鳍状FET形成,以在诸如SRAM电路的同一电路中提供具有不同导通电流的多个finFET。
    • 20. 发明授权
    • Device patterned with sub-lithographic features with variable widths
    • 用具有可变宽度的亚光刻特征构图的装置
    • US07781847B2
    • 2010-08-24
    • US12034972
    • 2008-02-21
    • Haining S. Yang
    • Haining S. Yang
    • H01L27/088
    • H01L21/0337H01L21/0334H01L21/3086H01L21/3088H01L21/76229H01L21/84H01L27/0207H01L27/11H01L27/1104H01L27/1203Y10S438/942Y10S438/947Y10S977/887
    • A method of processing a substrate of a device comprises the as following steps. Form a cap layer over the substrate. Form a dummy layer over the cap layer, the cap layer having a top surface. Etch the dummy layer forming patterned dummy elements of variable widths and exposing sidewalls of the dummy elements and portions of the top surface of the cap layer aside from the dummy elements. Deposit a spacer layer over the device covering the patterned dummy elements and exposed surfaces of the cap layer. Etch back the spacer layer forming sidewall spacers aside from the sidewalls of the patterned dummy elements spaced above a minimum spacing and forming super-wide spacers between sidewalls of the patterned dummy elements spaced less than the minimum spacing. Strip the patterned dummy elements. Expose portions of the substrate aside from the sidewall spacers. Pattern exposed portions of the substrate by etching into the substrate.
    • 处理装置的基板的方法包括以下步骤。 在基材上形成盖层。 在盖层上形成虚设层,盖层具有顶表面。 蚀刻虚拟层,形成具有可变宽度的图案化虚拟元件,并暴露虚拟元件的侧壁和除了虚拟元件之外的盖层的顶表面的部分。 在覆盖图案化的虚拟元件和盖层的暴露表面的器件上沉积间隔层。 将形成侧壁间隔物的间隔层向后蚀刻,除了图案化的虚设元件的侧壁之间间隔开最小间隔,并且在图案化的虚设元件的侧壁之间形成超宽间隔物,其间隔开小于最​​小间隔。 剥去图案的虚拟元素。 将侧衬垫的一部分露出。 通过蚀刻到衬底中的衬底的图案曝光部分。