NON-CONTINUOUS ENCAPSULATION LAYER FOR MIM CAPACITOR
    4.
    发明申请
    NON-CONTINUOUS ENCAPSULATION LAYER FOR MIM CAPACITOR 有权
    MIM电容器的非连续封装层

    公开(公告)号:US20050189615A1

    公开(公告)日:2005-09-01

    申请号:US10908491

    申请日:2005-05-13

    IPC分类号: H01L21/02 H01L21/8242

    CPC分类号: H01L28/57

    摘要: The present invention relates to metal-insulator-metal (MIM) capacitors and field effect transistors (FETs) formed on a semiconductor substrate. The FETs are formed in Front End of Line (FEOL) levels below the MIM capacitors which are formed in upper Back End of Line (BEOL) levels. An insulator layer is selectively formed to encapsulate at least a top plate of the MIM capacitor to protect the MIM capacitor from damage due to process steps such as, for example, reactive ion etching. By selective formation of the insulator layer on the MIM capacitor, openings in the inter-level dielectric layers are provided so that hydrogen and/or deuterium diffusion to the FETs can occur.

    摘要翻译: 本发明涉及形成在半导体衬底上的金属 - 绝缘体 - 金属(MIM)电容器和场效应晶体管(FET)。 FET形成在线路前端(FEOL)电平以下的MIM电容器下面,这些电容器形成在上部后端(BEOL)电平。 选择性地形成绝缘体层以封装MIM电容器的至少顶板,以保护MIM电容器免受由于诸如反应离子蚀刻等工艺步骤的损害。 通过在MIM电容器上选择性地形成绝缘体层,提供层间电介质层中的开口,使得可以发生氢和/或氘到FET的扩散。