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    • 6. 发明授权
    • Semiconductor device manufacturing method
    • 半导体器件制造方法
    • US06335252B1
    • 2002-01-01
    • US09564550
    • 2000-05-04
    • Toshiyuki OishiYukio NishidaHirokazu SayamaHidekazu Oda
    • Toshiyuki OishiYukio NishidaHirokazu SayamaHidekazu Oda
    • H01L21336
    • H01L29/6653H01L29/665H01L29/66545H01L29/6659H01L29/66628H01L29/7833
    • An MIS transistor manufacturing method which can prevent unwanted diffusion of extensions caused by the drive to the source/drain so that the diffusion of the source/drain and the diffusion of the extensions can independently be controlled so as to obtain optimum structure for each. Source/drain are formed by ion implantation using, as a mask, L-shaped silicon nitride films formed on sides of a gate electrode and silicon oxide films covering the silicon nitride films. The silicon oxide films are then removed leaving the silicon nitride films. Impurity ions are then ion-implanted into the main surface of the silicon substrate through the silicon nitride films. Since the silicon nitride films are thicker in the vicinity of the gate electrode and thinner in the vicinity of the source/drain, this process forms extensions penetrating under the gate electrode for a small distance.
    • 一种MIS晶体管制造方法,其可以防止由源极/漏极的驱动引起的延伸部的不期望的扩散,从而可以独立地控制源极/漏极的扩散和扩展部的扩散,从而获得每个的最佳结构。 作为掩模,通过离子注入形成源极/漏极,形成在栅电极的侧面上的L形氮化硅膜和覆盖氮化硅膜的氧化硅膜。 然后去除氧化硅膜,留下氮化硅膜。 然后通过氮化硅膜将杂质离子离子注入硅衬底的主表面。 由于氮化硅膜在栅电极附近较厚并且在源极/漏极附近较薄,所以该工艺形成了在栅电极下方一小段距离的延伸。