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    • 4. 发明授权
    • Anneal hillock suppression method in integrated circuit interconnects
    • 集成电路互连中的退火小丘抑制方法
    • US06500754B1
    • 2002-12-31
    • US09999661
    • 2001-10-31
    • Darrell M. ErbSteven C. AvanzinoAlline F. Myers
    • Darrell M. ErbSteven C. AvanzinoAlline F. Myers
    • H01L214763
    • H01L21/76883
    • An integrated circuit and manufacturing method therefore is provided having a semiconductor substrate with a semiconductor device. A device dielectric layer is formed on the semiconductor substrate, and a channel dielectric layer formed on the device dielectric layer has an opening formed therein. A barrier layer lines the channel opening and a conductor core fills the opening over the barrier layer. Before planarization of the conductor core and the barrier layer, an anneal of the semiconductor substrate is performed at high temperatures of 400° C. and above to stimulate grain growth. After planarization, subsequent high temperature deposition of passivating or capping layers will not cause grain growth and hillocks will be suppressed.
    • 因此,提供了具有半导体器件的半导体衬底的集成电路和制造方法。 在半导体基板上形成器件电介质层,在器件电介质层上形成的沟道电介质层形成有开口部。 阻挡层对通道开口进行排列,并且导体芯填充阻挡层上的开口。 在导体芯和阻挡层平坦化之前,在400℃及以上的高温下进行半导体衬底的退火以刺激晶粒生长。 在平坦化之后,随后的钝化层或覆盖层的高温沉积将不会导致晶粒生长并且抑制小丘。