Patent ID: 9337041
Filing Date: 2016-05-10
CPC Classification: H01L

Claim Text:
1. A method of forming a semiconductor structure comprising: forming a disposable gate spacer on opposite sidewalls of a gate structure located on a body portion of a semiconductor material portion of a substrate; replacing said disposable gate spacer with a gate spacer comprising an anisotropic dielectric material having an anisotropic dielectric constant, said gate spacer laterally surrounding said gate structure, wherein said anisotropic dielectric material is a nematic phase liquid crystal material; aligning lengthwise directions of molecules of said nematic liquid crystal material along a vertical direction perpendicular to an interface between said body portion and a gate dielectric, wherein a first value of said anisotropic dielectric constant of said nematic phase liquid crystal material along said vertical direction perpendicular to said interface between said body portion and said gate dielectric is greater than a second value of said anisotropic dielectric constant of said nematic phase liquid crystal material along a direction parallel to said interface upon alignment of the molecules of said nematic phase liquid crystal material of said gate spacer.