Liquid Crystal Composition for Wide Temperature and Fast Response

The patent employs a composite liquid crystal composition consisting of multiple specific compounds (cyclohexane derivatives, phenyl cyclohexane compounds, and other liquid crystal materials) mixed in defined proportions. This composite approach allows the composition to achieve a balanced combination of high maximum nematic phase temperature (90°C or higher), low minimum nematic phase temperature (−10°C or lower), small viscosity (50 mPa·s or lower at 20°C), suitable optical anisotropy (0.05 ≤ Δn ≤ 0.15), large dielectric anisotropy (2 ≤ Δε ≤ 5), high stability to ultraviolet light and heat, and large elastic constant (K ≥ 8 pN), which cannot be achieved by single compounds or conventional compositions.

The patent optimizes specific physical and chemical parameters of the liquid crystal composition by carefully selecting and proportioning multiple compounds. The composition achieves a maximum nematic phase temperature of 90°C or higher and a minimum of −10°C or lower, creating a wide operating temperature range. The viscosity is controlled to 50 mPa·s or lower at 20°C, optical anisotropy is maintained between 0.05 and 0.15, dielectric anisotropy is set between 2 and 5, and elastic constant is kept at 8 pN or higher, demonstrating precise parameter control to resolve the contradiction.

The patent uses a composite composition of specific liquid crystal compounds where low-viscosity components (achieving 50 mPa·s or lower at 20°C for short response time) are combined with high-stability components. The composition includes cyclohexane derivatives and phenyl cyclohexane compounds in specific proportions that maintain both fast response characteristics and high stability to ultraviolet light and heat, along with a wide temperature range (maximum 90°C or higher, minimum −10°C or lower).

The patent achieves a viscosity of 50 mPa·s or lower at 20°C to ensure short response time, while simultaneously maintaining maximum nematic phase temperature of 90°C or higher, minimum of −10°C or lower, and high stability to ultraviolet light and heat. This parameter optimization across multiple dimensions resolves the contradiction between speed and reliability.

The patent employs a composite liquid crystal composition with multiple compounds (cyclohexane derivatives, phenyl cyclohexane compounds, and other liquid crystal materials) in defined proportions. This composite structure enables simultaneous achievement of large dielectric anisotropy (2 ≤ Δε ≤ 5) for low threshold voltage and small power consumption, while maintaining suitable optical anisotropy (0.05 ≤ Δn ≤ 0.15) and small viscosity (50 mPa·s or lower at 20°C), demonstrating precise control over multiple electrical and optical parameters.

The patent optimizes the dielectric anisotropy to a range of 2 to 5, which achieves low threshold voltage and small power consumption. Simultaneously, the composition maintains optical anisotropy between 0.05 and 0.15 and viscosity at 50 mPa·s or lower at 20°C, showing precise parameter control that resolves the contradiction between electrical efficiency and optical/viscositic characteristics.

The patent uses a composite composition of specific liquid crystal compounds (cyclohexane derivatives, phenyl cyclohexane compounds, and other materials) in carefully defined proportions. This composite approach achieves a maximum nematic phase temperature of 90°C or higher for high temperature operation, while simultaneously maintaining a minimum nematic phase temperature of −10°C or lower, creating an extensive usable temperature range from −10°C to 90°C or higher that cannot be achieved by single compounds.

The patent achieves a maximum nematic phase temperature of 90°C or higher while maintaining a minimum of −10°C or lower, creating a wide operating temperature range. This parameter optimization resolves the contradiction between high temperature operation and low temperature performance by using a composite composition with balanced thermal characteristics.