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US07727708B2 Method for fabricating dual damascene structures 失效
双镶嵌结构的制作方法

Method for fabricating dual damascene structures
Abstract:
A method for fabricating a dual damascene structure includes providing a multi-layer photoresist stack comprising a first photoresist layer and a second photoresist layer, wherein each photoresist layer has a distinct dose-to-clear value, exposing said photoresist stack to one or more predetermined patterns of light, and developing said photo-resist layers to form a multi-tiered structure in the photo-resist layers.
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