Patent ID: 6838017

Claim:
Liquid crystal compounds having the general structure: wherein X is NCS (isothiocyanate); T 1 is a triple bond; Y 1 and Y 2 are a pair of substituents selected from the group consisting of H and F, and Y 1 ═Y 2 ; Z 1 and Z 2 are a pair of substituents selected from the group consisting of H and F, and Z 1 ═Z 2 ; and, at least one of the pairs Y 1 and Y 2 and Z 1 and Z 2 are substituted with F; Rn is selected from the group consisting of an alkyl group having the general formula C n H 2n+1 , an alkenyl group having the general formula C n H 2n−1 , an alkoxy group having the general formula OC n H 2n+1 , an alkenoxy group having the general formula OC n H 2n−1 , and a group of the general structure wherein R x is selected from a group consisting of an alkyl group having the general formula C x H 2x+1 , an alkenyl group having the general formula C x H 2x−1 , an alkoxy group having the general formula OC x H 2x+1 , and an alkenoxy group having the general formula OC x H 2x−1 ; and, wherein n is an integer greater than 0 and x is an integer greater than 0.