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US08981444B2 Subresolution silicon features and methods for forming the same 有权
分解硅特征及其形成方法

Subresolution silicon features and methods for forming the same
摘要：
Novel etch techniques are provided for shaping silicon features below the photolithographic resolution limits. FinFET devices are defined by recessing oxide and exposing a silicon protrusion to an isotropic etch, at least in the channel region. In one implementation, the protrusion is contoured by a dry isotropic etch having excellent selectivity, using a downstream microwave plasma etch.
摘要（中）：

提供了新颖的蚀刻技术，用于在低于光刻分辨率极限的条件下成形硅特征。 FinFET器件通过凹陷氧化物和至少在沟道区域中将硅突起暴露于各向同性蚀刻来限定。 在一个实施方案中，使用下游微波等离子体蚀刻，通过具有优异选择性的干各向同性蚀刻来形成突起。

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