The current study focuses on the optical, dielectric, and electro-optical properties of single-walled carbon nanotubes (SWCNTs) doped in the nematic matrix of a room temperature liquid crystalline material 4-(trans-4-n-hexylcyclohexyl)isothiocyanatobenzene (6CHBT). The nematic liquid crystalline material used in the study is 6CHBT. It has been doped with SWCNTs of diameter ~ 0.8-1.4 nm and length ~100-300 nm. The nematic liquid crystalline material 6CHBT is an ideal base material for displays because of its low viscosity and nematic phase temperature range of 12.5 - 43.0 C. SWCNTs have been doped in 6CHBT in two different concentrations i.e., 0.01 and 0.02% (weight ratio). For higher concentrations, CNTs were observed to be bundled at different locations. For this reason, higher concentrations were not studied. Using electro-optical and dielectric spectroscopy, the effects of SWCNTs doping on a number of display characteristics, including threshold voltage, dielectric anisotropy, and splay elastic constant, have been investigated. SWCNTs alignment parallel to the nematic direction is supported by the nematic phase. Yet, the SWCNTs enhance the local orientational arrangement of the molecules in the nematic phase. As a result, the inclusion of the SWCNTs significantly lowers the threshold voltage necessary to convert the molecules from planar (bright state) to homeotropic (dark state) shape.