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    • 27. 发明授权
    • Method for manufacturing an electrode of a capacitor
    • 制造电容器电极的方法
    • US06500763B2
    • 2002-12-31
    • US09735901
    • 2000-12-14
    • Jin-won KimSang-don NamWan-don KimKab-jin Nam
    • Jin-won KimSang-don NamWan-don KimKab-jin Nam
    • H01L21302
    • H01L28/91H01L21/31111H01L21/31116H01L21/31122
    • A method for manufacturing an electrode of a capacitor used in a semiconductor device, wherein a support insulating layer, an etch stop layer including a tantalum oxide layer, and a mold sacrificial insulating layer are sequentially formed on a semiconductor substrate. The mold sacrificial insulating layer, the etch stop layer and the support insulating layer are sequentially patterned to form a three-dimensional mold for a storage node. A storage node layer is formed to cover the inner surface of the mold. Next, storage nodes for capacitors are formed by dividing the storage node layer. The residual mold sacrificial insulating layer is removed by selectively wet etching, using the tantalum oxide layer as an etch stopper.
    • 在半导体器件中制造用于电容器的电极的方法,其中在半导体衬底上依次形成支撑绝缘层,包括氧化钽层的蚀刻停止层和模具牺牲绝缘层。 模具牺牲绝缘层,蚀刻停止层和支撑绝缘层被顺序地图案化以形成用于存储节点的三维模具。 形成存储节点层以覆盖模具的内表面。 接下来,通过划分存储节点层来形成用于电容器的存储节点。 通过使用氧化钽层作为蚀刻停止器,通过选择性湿法蚀刻除去残余模具牺牲绝缘层。