Method for forming self-aligned dual salicide in CMOS technologies
    6.
    发明授权
    Method for forming self-aligned dual salicide in CMOS technologies 失效
    在CMOS技术中形成自对准双重自杀机的方法

    公开(公告)号:US07112481B2

    公开(公告)日:2006-09-26

    申请号:US11254929

    申请日:2005-10-20

    IPC分类号: H01L21/8238

    摘要: A method of fabricating a complementary metal oxide semiconductor (CMOS) device, wherein the method comprises forming a first well region in a semiconductor substrate for accommodation of a first type semiconductor device; forming a second well region in the semiconductor substrate for accommodation of a second type semiconductor device; shielding the first type semiconductor device with a mask; depositing a first metal layer over the second type semiconductor device; performing a first salicide formation on the second type semiconductor device; removing the mask; depositing a second metal layer over the first and second type semiconductor devices; and performing a second salicide formation on the first type semiconductor device. The method requires only one pattern level and it eliminates pattern overlay as it also simplifies the processes to form different silicide material over different devices.

    摘要翻译: 一种制造互补金属氧化物半导体(CMOS)器件的方法,其中所述方法包括在用于容纳第一类型半导体器件的半导体衬底中形成第一阱区; 在所述半导体衬底中形成用于容纳第二类型半导体器件的第二阱区; 用掩模屏蔽第一类型半导体器件; 在所述第二类型半导体器件上沉积第一金属层; 在所述第二类型半导体器件上执行第一自对准硅化物形成; 去除面膜; 在所述第一和第二类型半导体器件上沉积第二金属层; 以及在所述第一类型半导体器件上执行第二自对准硅化物形成。 该方法仅需要一个图案级别,并且消除图案覆盖,因为它也简化了在不同设备上形成不同硅化物材料的工艺。