Strain balanced structure with a tensile strained silicon channel and a compressive strained silicon-germanium channel for CMOS performance enhancement
    12.
    发明授权
    Strain balanced structure with a tensile strained silicon channel and a compressive strained silicon-germanium channel for CMOS performance enhancement 有权
    应变平衡结构具有拉伸应变硅通道和压缩应变硅 - 锗通道,用于CMOS性能提升

    公开(公告)号:US07238989B2

    公开(公告)日:2007-07-03

    申请号:US11201990

    申请日:2005-08-11

    IPC分类号: H01L27/01

    摘要: A method of fabricating a CMOS device wherein mobility enhancement of both the NMOS and PMOS elements is realized via strain induced band structure modification, has been developed. The NMOS element is formed featuring a silicon channel region under biaxial strain while the PMOS element is simultaneously formed featuring a SiGe channel region under biaxial compressive strain. A novel process sequence allowing formation of a thicker silicon layer overlying a SiGe layer, allows the NMOS channel region to exist in the silicon layer overlying a SiGe layer, allows the NMOS channel region to exist in the silicon layer which is under biaxial tensile strain enhancing electron mobility. The same novel process sequence results in the presence of a thinner silicon layer, overlying the same SiGe layer in the PMOS region, allowing the PMOS channel region to exist in the biaxial compressively strained SiGe layer, resulting in hole mobility enhancement.

    摘要翻译: 已经开发了通过应变诱导带结构修改来实现NMOS和PMOS元件的迁移率增强的CMOS器件的制造方法。 NMOS元件形成为具有双轴应变下的硅沟道区,同时形成在双轴压缩应变下具有SiGe沟道区的PMOS元件。 允许形成覆盖SiGe层的较厚硅层的新颖工艺顺序允许NMOS沟道区存在于覆盖SiGe层的硅层中,允许NMOS沟道区存在于双层拉伸应变增强下的硅层中 电子迁移率。 相同的新工艺序列导致存在较薄的硅层,覆盖PMOS区域中相同的SiGe层,允许PMOS沟道区存在于双轴压缩应变SiGe层中,导致空穴迁移率增强。

    Strain balanced structure with a tensile strained silicon channel and a compressive strained silicon-germanium channel for CMOS performance enhancement
    13.
    发明申请
    Strain balanced structure with a tensile strained silicon channel and a compressive strained silicon-germanium channel for CMOS performance enhancement 有权
    应变平衡结构具有拉伸应变硅通道和压缩应变硅 - 锗通道,用于CMOS性能提升

    公开(公告)号:US20050272188A1

    公开(公告)日:2005-12-08

    申请号:US11201990

    申请日:2005-08-11

    摘要: A method of fabricating a CMOS device wherein mobility enhancement of both the NMOS and PMOS elements is realized via strain induced band structure modification, has been developed. The NMOS element is formed featuring a silicon channel region under biaxial strain while the PMOS element is simultaneously formed featuring a SiGe channel region under biaxial compressive strain. A novel process sequence allowing formation of a thicker silicon layer overlying a SiGe layer, allows the NMOS channel region to exist in the silicon layer overlying a SiGe layer, allows the NMOS channel region to exist in the silicon layer which is under biaxial tensile strain enhancing electron mobility. The same novel process sequence results in the presence of a thinner silicon layer, overlying the same SiGe layer in the PMOS region, allowing the PMOS channel region to exist in the biaxial compressively strained SiGe layer, resulting in hole mobility enhancement.

    摘要翻译: 已经开发了通过应变诱导带结构修改来实现NMOS和PMOS元件的迁移率增强的CMOS器件的制造方法。 NMOS元件形成为具有双轴应变下的硅沟道区,同时形成在双轴压缩应变下具有SiGe沟道区的PMOS元件。 允许形成覆盖SiGe层的较厚硅层的新颖工艺顺序允许NMOS沟道区存在于覆盖SiGe层的硅层中,允许NMOS沟道区存在于双层拉伸应变增强下的硅层中 电子迁移率。 相同的新工艺序列导致存在较薄的硅层,覆盖PMOS区域中相同的SiGe层,允许PMOS沟道区存在于双轴压缩应变SiGe层中,导致空穴迁移率增强。

    Method for dicing semiconductor wafers
    20.
    发明授权
    Method for dicing semiconductor wafers 有权
    切割半导体晶片的方法

    公开(公告)号:US08288842B2

    公开(公告)日:2012-10-16

    申请号:US11655008

    申请日:2007-01-18

    IPC分类号: H01L23/544 H01L21/301

    CPC分类号: H01L21/78 B28D5/00

    摘要: A method provides for dicing a wafer having a base material with a diamond structure. The wafer first undergoes a polishing process, in which a predetermined portion of the wafer is polished away from its back side. The wafer is then diced through at least one line along a direction at a predetermined offset angle from a natural cleavage direction of the diamond structure. A wafer is produced with one or more dies formed thereon with at least one of its edges at an offset angle from a natural cleavage direction of a diamond structure of a base material forming the wafer. At least one dicing line has one or more protection elements for protecting the dies from undesired cracking while the wafer is being diced along the dicing line.

    摘要翻译: 一种方法提供用具有金刚石结构的具有基底材料的晶片切割。 晶片首先进行抛光处理,其中将晶片的预定部分从其背面抛光。 然后将晶片沿着与金刚石结构的天然裂解方向成预定偏移角的方向通过至少一条线切割。 制造具有一个或多个模具的晶片,其上的至少一个边缘与形成晶片的基底材料的金刚石结构的天然裂解方向成偏移角。 至少一个切割线具有一个或多个保护元件,用于在晶片沿着切割线切割时保护模具不受不期望的开裂。