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    • 7. 发明授权
    • Multi-threshold voltage FETs
    • 多阈值电压FET
    • US09337109B2
    • 2016-05-10
    • US13902326
    • 2013-05-24
    • Taiwan Semiconductor Manufacturing Company, Ltd.
    • Gerben DoornbosKrishna Kumar Bhuwalka
    • H01L29/82H01L21/00H01L27/092H01L21/336H01L21/8234H01L21/8238H01L27/06H01L29/10
    • H01L21/823821H01L21/823412H01L27/0605H01L27/0924H01L29/1054
    • A multi-threshold voltage (Vt) field-effect transistor (FET) formed through strain engineering is provided. An embodiment integrated circuit device includes a first transistor including a first channel region over a first buffer, the first channel region formed from a III-V semiconductor material and a second transistor including a second channel region over a second buffer, the second channel region formed from the III-V semiconductor material, the second buffer and the first buffer having a lattice mismatch. A first strain introduced by a lattice mismatch between the III-V semiconductor material and the first buffer is different than a second strain introduced by a lattice mismatch between the III-V semiconductor material and the second buffer. Therefore, the threshold voltage of the first transistor is different than the threshold voltage of the second transistor.
    • 提供了通过应变工程形成的多阈值电压(Vt)场效应晶体管(FET)。 实施例集成电路装置包括:第一晶体管,包括第一缓冲器上的第一沟道区,由III-V半导体材料形成的第一沟道区和在第二缓冲区上包括第二沟道区的第二晶体管,形成第二沟道区 从III-V半导体材料,第二缓冲器和第一缓冲器具有晶格失配。 由III-V族半导体材料和第一缓冲层之间的晶格失配引入的第一应变与由III-V族半导体材料和第二缓冲层之间的晶格失配导入的第二应变不同。 因此,第一晶体管的阈值电压不同于第二晶体管的阈值电压。