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    • 5. 发明授权
    • Hybrid STI stressor with selective re-oxidation anneal
    • 混合STI应力选择性再氧化退火
    • US07276417B2
    • 2007-10-02
    • US11320221
    • 2005-12-28
    • Kai-Ting TsengYu-Lien HuangHao-Ming LienLing-Yen YehHun-Jan Tao
    • Kai-Ting TsengYu-Lien HuangHao-Ming LienLing-Yen YehHun-Jan Tao
    • H01L21/336
    • H01L21/823878H01L21/76224H01L21/823807H01L29/7846
    • A method for forming stressors in a semiconductor substrate is provided. The method includes providing a semiconductor substrate including a first device region and a second device region, forming shallow trench isolation (STI) regions with a high-shrinkage dielectric material in the first and the second device regions wherein the STI regions define a first active region in the first device region and a second active region in the second device region, forming an insulation mask over the STI region and the first active region in the first device region wherein the insulation mask does not extend over the second device region, and performing a stress-tuning treatment to the semiconductor substrate. The first active region and second active region have tensile stress and compressive stress respectively. An NMOS and a PMOS device are formed on the first and second active regions, respectively.
    • 提供了一种在半导体衬底中形成应力源的方法。 该方法包括提供包括第一器件区域和第二器件区域的半导体衬底,在第一和第二器件区域中形成具有高收缩介电材料的浅沟槽隔离(STI)区域,其中STI区域限定第一有源区域 在所述第一器件区域和所述第二器件区域中的第二有源区域中,在所述STI区域和所述第一器件区域中的所述第一有源区域上形成绝缘掩模,其中所述绝缘掩模不在所述第二器件区域上延伸,并执行 对半导体衬底进行应力调谐处理。 第一活性区和第二活性区分别具有拉伸应力和压应力。 分别在第一和第二有源区上形成NMOS和PMOS器件。