Liquid Crystal Composition for Display Response Time and Temperature Balance

The patent uses a composite liquid crystal composition containing multiple specific compounds (cyclohexane derivatives, phenyl cyclohexane compounds, and other liquid crystal compounds) in defined weight ratios. This composite approach allows balancing the maximum nematic phase temperature (achieved through compounds like 1,4-cyclohexylenebis(methylene)-1,4-dicarboxylic acid compounds) with viscosity control (achieved through phenyl cyclohexane compounds with specific molecular structures), thereby maintaining fast response times even at elevated temperatures.

The patent precisely controls the molecular structure parameters of the liquid crystal compounds, particularly the phenyl cyclohexane compounds. By adjusting parameters such as the substitution patterns on the cyclohexane ring, the length of alkyl chains, and the positions of aromatic rings, the invention achieves an optimal balance where the viscosity is sufficiently low for fast response while the elastic constant remains high enough to maintain good contrast ratio. The specific weight ratio range (15-50% for phenyl cyclohexane compounds) is critical for this parameter optimization.

The patent introduces compounds with specific local molecular structures that independently contribute to different properties. The cyclohexane derivative compounds primarily provide high dielectric anisotropy (reducing threshold voltage and power consumption), while the phenyl cyclohexane compounds with specific aromatic ring arrangements primarily maintain optical anisotropy (ensuring contrast ratio). This local functional differentiation within the composite composition allows simultaneous optimization of both electrical and optical properties without compromise.