发明授权
US08518282B2 Method of controlling etch microloading for a tungsten-containing layer 有权
控制含钨层的蚀刻微负载的方法

Method of controlling etch microloading for a tungsten-containing layer
摘要:
A method for etching features of different aspect ratios in a tungsten containing layer is provided. An etch gas is provided containing a tungsten etch component and a deposition component. A plasma is formed from the provided etch gas. A tungsten containing layer patterned with wide and narrow features is etched with the provided plasma.
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