STRESS-ADJUSTING METHOD OF MOS DEVICE
    9.
    发明申请
    STRESS-ADJUSTING METHOD OF MOS DEVICE 审中-公开
    MOS器件的应力调整方法

    公开(公告)号:US20120071004A1

    公开(公告)日:2012-03-22

    申请号:US12885110

    申请日:2010-09-17

    IPC分类号: H01L21/31

    摘要: A stress-adjusting method for use in a manufacturing system of a MOS device is provided. At first, a first stress layer is formed onto a substrate wherein at least two MOSFETs are previously formed on the substrate. The first stress layer overlies an inter-gate region between two adjacent gate regions of the MOSFETs and overlies the two adjacent gate regions. Then, the first stress layer in the inter-gate region is thinned. A second stress layer is further formed onto the substrate to overlie the thinned first stress layer in the inter-gate region to provide the resulting MOS device with satisfactory stress.

    摘要翻译: 提供了一种用于MOS器件制造系统的应力调节方法。 首先,在衬底上形成第一应力层,其中在衬底上预先形成至少两个MOSFET。 第一应力层覆盖在MOSFET的两个相邻栅极区域之间的栅极间区域,并且覆盖在两个相邻栅极区域上。 然后,栅极间区域中的第一应力层变薄。 第二应力层进一步形成在衬底上以覆盖栅极间区域中的减薄的第一应力层,以使所得到的MOS器件具有令人满意的应力。