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公开(公告)号:US20110097896A1
公开(公告)日:2011-04-28
申请号:US10526422
申请日:2003-08-04
IPC分类号: H01L21/768
CPC分类号: H01L21/7684 , H01L21/7688
摘要: The present invention relates to a method for fabrication of in-laid metal interconnects. The method comprises the steps of providing a substrate with a dielectric material (1) on top thereof, depositing a protection layer (2) on top of the dielectric material, depositing a sacrificial layer (7) on top of the protection layer, the sacrificial layer having a mechanical strength that is lower than the mechanical strength of the protection layer, making an opening (3) through the sacrificial layer, through the protection layer and into the dielectric material, depositing a barrier layer (4) in the opening and on the sacrificial layer, depositing metal material (5) on the barrier layer, the metal material filling the opening, removing portions of the metal material existing beyond the opening by means of polishing, and removing the barrier layer and the sacrificial layer in one polishing step.
摘要翻译: 本发明涉及一种内置金属互连的制造方法。 该方法包括以下步骤:在其顶部提供介电材料(1)的基底,在电介质材料的顶部上沉积保护层(2),在保护层的顶部上沉积牺牲层(7) 具有低于保护层的机械强度的机械强度的层,通过保护层形成通过牺牲层的开口(3)并进入电介质材料,在开口中沉积阻挡层(4) 牺牲层,在阻挡层上沉积金属材料(5),填充开口的金属材料,通过抛光去除存在于开口之外的金属材料的部分,以及在一个抛光步骤中去除阻挡层和牺牲层 。