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    • 1. 发明授权
    • Hybrid process for forming metal gates of MOS devices
    • 用于形成MOS器件的金属栅极的混合工艺
    • US08536660B2
    • 2013-09-17
    • US12047113
    • 2008-03-12
    • Peng-Fu HsuYong-Tian HouSsu-Yi LiKuo-Tai HuangMong Song Liang
    • Peng-Fu HsuYong-Tian HouSsu-Yi LiKuo-Tai HuangMong Song Liang
    • H01L21/02
    • H01L21/823857H01L21/823842H01L27/092
    • A semiconductor structure includes a first MOS device including a first gate, and a second MOS device including a second gate. The first gate includes a first high-k dielectric over a semiconductor substrate; a second high-k dielectric over the first high-k dielectric; a first metal layer over the second high-k dielectric, wherein the first metal layer dominates a work-function of the first MOS device; and a second metal layer over the first metal layer. The second gate includes a third high-k dielectric over the semiconductor substrate, wherein the first and the third high-k dielectrics are formed of same materials, and have substantially a same thickness; a third metal layer over the third high-k dielectric, wherein the third metal layer and the second metal layer are formed of same materials, and have substantially a same thickness; and a fourth metal layer over the third metal layer.
    • 半导体结构包括包括第一栅极的第一MOS器件和包括第二栅极的第二MOS器件。 第一栅极包括在半导体衬底上的第一高k电介质; 第一高k电介质上的第二高k电介质; 在所述第二高k电介质上的第一金属层,其中所述第一金属层支配所述第一MOS器件的功函数; 以及在所述第一金属层上的第二金属层。 第二栅极包括半导体衬底上的第三高k电介质,其中第一和第三高k电介质由相同的材料形成,并具有基本上相同的厚度; 在所述第三高k电介质上的第三金属层,其中所述第三金属层和所述第二金属层由相同的材料形成,并且具有基本相同的厚度; 以及在第三金属层上的第四金属层。
    • 2. 发明申请
    • Hybrid Process for Forming Metal Gates of MOS Devices
    • MOS器件金属门的混合工艺
    • US20090230479A1
    • 2009-09-17
    • US12047113
    • 2008-03-12
    • Peng-Fu HsuYong-Tian HouSsu-Yi LiKuo-Tai HuangMong Song Liang
    • Peng-Fu HsuYong-Tian HouSsu-Yi LiKuo-Tai HuangMong Song Liang
    • H01L27/092
    • H01L21/823857H01L21/823842H01L27/092
    • A semiconductor structure includes a first MOS device including a first gate, and a second MOS device including a second gate. The first gate includes a first high-k dielectric over a semiconductor substrate; a second high-k dielectric over the first high-k dielectric; a first metal layer over the second high-k dielectric, wherein the first metal layer dominates a work-function of the first MOS device; and a second metal layer over the first metal layer. The second gate includes a third high-k dielectric over the semiconductor substrate, wherein the first and the third high-k dielectrics are formed of same materials, and have substantially a same thickness; a third metal layer over the third high-k dielectric, wherein the third metal layer and the second metal layer are formed of same materials, and have substantially a same thickness; and a fourth metal layer over the third metal layer.
    • 半导体结构包括包括第一栅极的第一MOS器件和包括第二栅极的第二MOS器件。 第一栅极包括在半导体衬底上的第一高k电介质; 第一高k电介质上的第二高k电介质; 在所述第二高k电介质上的第一金属层,其中所述第一金属层支配所述第一MOS器件的功函数; 以及在所述第一金属层上的第二金属层。 第二栅极包括半导体衬底上的第三高k电介质,其中第一和第三高k电介质由相同的材料形成,并具有基本上相同的厚度; 在所述第三高k电介质上的第三金属层,其中所述第三金属层和所述第二金属层由相同的材料形成,并且具有基本相同的厚度; 以及在第三金属层上的第四金属层。