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    • 5. 发明授权
    • Threshold voltage improvement employing fluorine implantation and adjustment oxide layer
    • 使用氟注入和调整氧化物层的阈值电压改善
    • US07893502B2
    • 2011-02-22
    • US12465908
    • 2009-05-14
    • Weipeng LiDae-Gyu ParkMelanie J. SheronyJin-Ping HanYong Meng Lee
    • Weipeng LiDae-Gyu ParkMelanie J. SheronyJin-Ping HanYong Meng Lee
    • H01L21/8238
    • H01L21/823807
    • An epitaxial semiconductor layer may be formed in a first area reserved for p-type field effect transistors. An ion implantation mask layer is formed and patterned to provide an opening in the first area, while blocking at least a second area reserved for n-type field effect transistors. Fluorine is implanted into the opening to form an epitaxial fluorine-doped semiconductor layer and an underlying fluorine-doped semiconductor layer in the first area. A composite gate stack including a high-k gate dielectric layer and an adjustment oxide layer is formed in the first and second area. P-type and n-type field effect transistors (FET's) are formed in the first and second areas, respectively. The epitaxial fluorine-doped semiconductor layer and the underlying fluorine-doped semiconductor layer compensate for the reduction of the decrease in the threshold voltage in the p-FET by the adjustment oxide portion directly above.
    • 可以在为p型场效应晶体管保留的第一区域中形成外延半导体层。 形成离子注入掩模层并图案化以在第一区域中提供开口,同时阻挡至少为n型场效应晶体管保留的第二区域。 将氟注入到开口中以在第一区域中形成外延氟掺杂半导体层和下面的掺氟半导体层。 在第一和第二区域中形成包括高k栅极电介质层和调整氧化物层的复合栅极堆叠。 P型和n型场效应晶体管(FET)分别形成在第一和第二区域中。 外延氟掺杂半导体层和下面的掺氟半导体层通过直接在上面的调整氧化物部分来补偿p-FET中阈值电压的降低。
    • 9. 发明申请
    • STRESS ENGINEERING FOR SRAM STABILITY
    • 用于SRAM稳定性的应力工程
    • US20090166757A1
    • 2009-07-02
    • US11964879
    • 2007-12-27
    • Christopher V. BaioccoXiandong ChenYoung G. KoMelanie J. Sherony
    • Christopher V. BaioccoXiandong ChenYoung G. KoMelanie J. Sherony
    • G06F17/50H01L27/11
    • H01L27/1104G01R31/31816
    • A design structure embodied in a machine readable medium is provided for use in the design, manufacturing, and/or testing of Ics that include at least one SRAM cell. In particular, the present invention provides a design structure of an IC embodied in a machine readable medium, the IC including at least one SRAM cell with a gamma ratio of about 1 or greater. In the present invention, the gamma ratio is increased with degraded pFET device performance. Moreover, in the inventive IC, there is no stress liner boundary present in the SRAM region and ion variation for all devices is reduced as compared to that of a conventional SRAM structure. The present invention provides a design structure of an IC embodied in a machine readable medium, the IC comprising at least one static random access memory cell including at least one nFET and at least one pFET; and a continuous relaxed stressed liner located above and adjoining the at least one nFET and the at least one pFET.
    • 提供体现在机器可读介质中的设计结构用于设计,制造和/或测试包括至少一个SRAM单元的IC。 特别地,本发明提供了体现在机器可读介质中的IC的设计结构,该IC包括至少一个具有大约1或更大的伽马比的SRAM单元。 在本发明中,γ比随着pFET器件性能的降低而增加。 此外,在本发明的IC中,SRAM区域中不存在应力衬垫边界,与常规SRAM结构相比,所有器件的离子变化都降低。 本发明提供了体现在机器可读介质中的IC的设计结构,该IC包括至少一个包括至少一个nFET和至少一个pFET的静态随机存取存储器单元; 以及位于所述至少一个nFET和所述至少一个pFET之上并邻接所述至少一个nFET的连续松弛应力衬垫。
    • 10. 发明申请
    • THRESHOLD VOLTAGE IMPROVEMENT EMPLOYING FLUORINE IMPLANTATION AND ADJUSTMENT OXIDE LAYER
    • 使用荧光植入和调整氧化层的阈值电压改进
    • US20100289088A1
    • 2010-11-18
    • US12465908
    • 2009-05-14
    • Weipeng LiDae-Gyu ParkMelanie J. SheronyJin-Ping HanYong Meng Lee
    • Weipeng LiDae-Gyu ParkMelanie J. SheronyJin-Ping HanYong Meng Lee
    • H01L27/088H01L21/8236
    • H01L21/823807
    • An epitaxial semiconductor layer may be formed in a first area reserved for p-type field effect transistors. An ion implantation mask layer is formed and patterned to provide an opening in the first area, while blocking at least a second area reserved for n-type field effect transistors. Fluorine is implanted into the opening to form an epitaxial fluorine-doped semiconductor layer and an underlying fluorine-doped semiconductor layer in the first area. A composite gate stack including a high-k gate dielectric layer and an adjustment oxide layer is formed in the first and second area. P-type and n-type field effect transistors (FET's) are formed in the first and second areas, respectively. The epitaxial fluorine-doped semiconductor layer and the underlying fluorine-doped semiconductor layer compensate for the reduction of the decrease in the threshold voltage in the p-FET by the adjustment oxide portion directly above.
    • 可以在为p型场效应晶体管保留的第一区域中形成外延半导体层。 形成离子注入掩模层并图案化以在第一区域中提供开口,同时阻挡至少为n型场效应晶体管保留的第二区域。 将氟注入到开口中以在第一区域中形成外延氟掺杂半导体层和下面的掺氟半导体层。 在第一和第二区域中形成包括高k栅极电介质层和调整氧化物层的复合栅极堆叠。 P型和n型场效应晶体管(FET)分别形成在第一和第二区域中。 外延氟掺杂半导体层和下面的掺氟半导体层通过直接在上面的调整氧化物部分来补偿p-FET中阈值电压的降低。