Invention Grant
US08206996B2 Etch tool process indicator method and apparatus 有权
蚀刻工具过程指示器方法和装置

Etch tool process indicator method and apparatus
Abstract:
A method for providing a process indicator for an etching chamber is provided. A wafer with a blanket etch layer is provided into the etching chamber. A blanket etch is performed on the blanket etch layer. A blanket deposition layer is deposited over the blanket etch layer after performing the blanket etch has been completed. A thickness of the blanket etch layer and a thickness of the blanket deposition layer is measured. The measured thicknesses are used to determine a process indicator.
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