Single mask MIM capacitor and resistor with in trench copper drift barrier
    3.
    发明申请
    Single mask MIM capacitor and resistor with in trench copper drift barrier 有权
    单掩模MIM电容器和电阻器具有沟槽铜漂移屏障

    公开(公告)号:US20060160299A1

    公开(公告)日:2006-07-20

    申请号:US11037530

    申请日:2005-01-18

    IPC分类号: H01L21/8242

    摘要: The formation of a MIM (metal insulator metal) capacitor (164) and concurrent formation of a resistor (166) is disclosed. A copper diffusion barrier (124) is formed over a copper deposition (110) that serves as a bottom electrode (170) of the capacitor (164). The copper diffusion barrier (124) mitigates unwanted diffusion of copper from the copper deposition (110), and is formed via electro-less deposition such that little to none of the barrier material is deposited at locations other than over a top surface (125) of the deposition of copper/bottom electrode. Subsequently, layers of dielectric (150) and conductive (152) materials are applied to form a dielectric (172) and top electrode (174) of the MIM capacitor (164), respectively, where the layer of conductive top electrode material (152) also functions to concurrently develop the resistor (166) on the same chip as the capacitor (164).

    摘要翻译: 公开了MIM(金属绝缘金属)电容器(164)的形成和电阻器(166)的同时形成。 在用作电容器(164)的底部电极(170)的铜沉积(110)上形成铜扩散阻挡层(124)。 铜扩散阻挡层(124)减轻了铜从铜沉积物(110)的不期望的扩散,并且通过无电沉积形成,使得在除了顶部表面(125)之外的位置处几乎不会沉积阻挡材料, 的铜/底电极的沉积。 随后,分别施加介电层(150)和导电(152)材料层以形成MIM电容器(164)的电介质(172)和顶电极(174),其中导电顶电极材料层(152) 还用于同时开发与电容器(164)相同的芯片上的电阻器(166)。