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    • 6. 发明申请
    • CMOS Structure and method of manufacturing same
    • CMOS结构及其制造方法
    • US20080237751A1
    • 2008-10-02
    • US11731163
    • 2007-03-30
    • Uday ShahBrian S. DoyleJack T. KavalierosWilly Rachmady
    • Uday ShahBrian S. DoyleJack T. KavalierosWilly Rachmady
    • H01L21/8238
    • H01L21/82385H01L29/785
    • A CMOS structure includes a substrate (110, 310), an electrically insulating layer (120, 320) over the substrate, NMOS (130, 330) and PMOS (140, 340) semiconducting structures over the electrically insulating layer, and a dielectric layer (150, 350) having first (151, 351) and second (152, 352) portions over, respectively, the NMOS and PMOS semiconducting structures. The NMOS and PMOS semiconducting structures have, respectively, a first height (135, 335) and a second height (145, 345). The CMOS structure further includes a first electrically conducting layer (160, 360) over the first portion of the dielectric layer, a second electrically conducting layer (170, 370) over the second portion of the dielectric layer and thicker than the first electrically conducting layer, a first polysilicon layer (180, 780) over the first electrically conducting layer, and a second polysilicon layer (190, 790) over the second electrically conducting layer and thinner than the first polysilicon layer.
    • CMOS结构包括衬底(110,310),衬底上的电绝缘层(120,320),电绝缘层上的NMOS(130,330)和PMOS(140,340)半导体结构,以及介电层 (150,350)分别在NMOS和PMOS半导体结构之上具有第一(151,351)和第二(152,352)部分。 NMOS和PMOS半导体结构分别具有第一高度(135,335)和第二高度(145,345)。 CMOS结构还包括位于电介质层的第一部分上的第一导电层(160,360),在介电层的第二部分上方的第二导电层(170,370),并且比第一导电层 ,在所述第一导电层上方的第一多晶硅层(180,780)以及所述第二导电层上的第二多晶硅层(190,790)并且比所述第一多晶硅层更薄。
    • 8. 发明申请
    • FABRICATING DUAL LAYER GATE ELECTRODES HAVING POLYSILICON AND A WORKFUNCTION METAL
    • 制造具有多晶硅和工作金属的双层门电极
    • US20090061611A1
    • 2009-03-05
    • US11848239
    • 2007-08-30
    • Willy RachmadyUday ShahJack T. KavalierosBrian S. Doyle
    • Willy RachmadyUday ShahJack T. KavalierosBrian S. Doyle
    • H01L21/3205
    • H01L29/4958H01L21/28079H01L21/28088H01L29/66795H01L29/785
    • A method for fabricating a dual layer gate electrode having a polysilicon layer and a workfunction metal layer comprises depositing a layer of a workfunction metal on a semiconductor substrate, depositing a layer of polysilicon on the workfunction metal layer, depositing a hard mask layer on the polysilicon layer, etching the hard mask layer to form a hard mask structure defining a gate electrode, etching the polysilicon layer to remove a portion of the polysilicon layer not protected by the hard mask structure, thereby forming a polysilicon structure beneath the hard mask structure, applying a mixture of ozone and water to exposed sidewalls of the polysilicon structure, thereby forming a silicon dioxide layer on the sidewalls, and etching the workfunction metal layer to remove a portion of the workfunction metal layer not protected by the hard mask structure, thereby forming a workfunction metal structure beneath the polysilicon structure.
    • 一种用于制造具有多晶硅层和功函数金属层的双层栅电极的方法,包括在半导体衬底上沉积功函数金属层,在功函数金属层上沉积多晶硅层,在多晶硅上沉积硬掩模层 蚀刻硬掩模层以形成限定栅电极的硬掩模结构,蚀刻多晶硅层以去除未被硬掩模结构保护的多晶硅层的一部分,从而在硬掩模结构下方形成多晶硅结构,施加 将臭氧和水的混合物混合到多晶硅结构的暴露的侧壁,从而在侧壁上形成二氧化硅层,并蚀刻功函数金属层以除去未被硬掩模结构保护的功能金属层的一部分,从而形成 多晶硅结构下面的功函数金属结构。