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    • 1. 发明授权
    • Methods including oxide masks for fabricating capacitor structures for
integrated circuit devices
    • 包括用于制造用于集成电路器件的电容器结构的氧化物掩模的方法
    • US5960293A
    • 1999-09-28
    • US806080
    • 1997-02-25
    • Weon-cheol HongYun-seung Shin
    • Weon-cheol HongYun-seung Shin
    • H01L27/04H01L21/822H01L21/8242H01L27/108
    • H01L27/10852H01L27/10817
    • A method for forming a capacitor for an integrated circuit device includes the following steps. An interlayer dielectric layer is formed on a substrate, and a contact hole is formed in the interlayer dielectric layer. A first conductive layer is then formed on the interlayer dielectric layer, wherein the first conductive layer is electrically connected to the substrate through the contact hole. A hole having a depth less than the thickness of the first conductive layer is etched in the first conductive layer. An insulating layer is formed in the hole and the first conductive layer is then etched to a predetermined depth using the insulating layer as an etching mask to expose a side wall of an upper portion of the insulating layer. A spacer is formed on the side wall of the upper portion of the insulating layer. The first conductive layer is then etched using the insulating layer and the spacer as etching marks to form an electrode structure. The insulating layer and spacer are then removed. Lastly, the capacitor is completed by forming a dielectric layer on the electrode structure and then forming a second conductive layer on the dielectric layer.
    • 一种用于形成用于集成电路器件的电容器的方法包括以下步骤。 在基板上形成层间电介质层,在层间电介质层中形成接触孔。 然后在层间电介质层上形成第一导电层,其中第一导电层通过接触孔与基板电连接。 在第一导电层中蚀刻深度小于第一导电层的厚度的孔。 在孔中形成绝缘层,然后使用绝缘层作为蚀刻掩模将第一导电层蚀刻到预定深度,以暴露绝缘层的上部的侧壁。 在绝缘层的上部的侧壁上形成间隔物。 然后使用绝缘层和间隔物作为蚀刻标记来蚀刻第一导电层以形成电极结构。 然后去除绝缘层和间隔物。 最后,通过在电极结构上形成电介质层,然后在电介质层上形成第二导电层来完成电容器。