Invention Grant
US09478660B2 Protection layer on fin of fin field effect transistor (FinFET) device structure 有权
鳍式场效应晶体管(FinFET)器件结构鳍片上的保护层

Protection layer on fin of fin field effect transistor (FinFET) device structure
Abstract:
A fin field device structure and method for forming the same are provided. The FinFET device structure includes a substrate and a fin structure extending from the substrate. The FinFET device structure also includes an isolation structure formed on the substrate. The fin structure has a top portion and a bottom portion, and the bottom portion is embedded in the isolation structure. The FinFET device structure further includes a protection layer formed on the top portion of the fin structure. An interface is between the protection layer and the top portion of the fin structure, and the interface has a roughness in a range from about 0.1 nm to about 2.0 nm.
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