Liquid Crystal Composition for High Transmittance

The patent uses a composite liquid crystal composition comprising multiple specific compounds (Formulas 1-8) in optimized proportions. This composite approach allows the material to achieve both low refractive index anisotropy (0.100-0.104) and low elastic modulus (K11: 12-15 pN, K33: 15-18 pN) while maintaining satisfactory transmittance, resolving the contradiction between display function and optical performance

The patent systematically adjusts multiple parameters including the weight ratios of different liquid crystal compounds, the chemical structure parameters (X and Y groups), and the resulting physical properties (refractive index anisotropy, elastic modulus, rotational viscosity). By optimizing these parameters within specific ranges, the patent achieves the desired balance between transmittance and molecular orientation control

The patent optimizes the rotational viscosity (γ1) to be within 6-7.2 cP, which provides sufficient molecular orientation control despite the low elastic modulus. This parameter adjustment ensures that the liquid crystal molecules can still be effectively aligned by the alignment layer and respond appropriately to electric fields, maintaining reliability while achieving low refractive index anisotropy

The composite nature of the liquid crystal composition allows different components to contribute different properties. Some compounds contribute to low refractive index anisotropy, while others contribute to appropriate elastic modulus and rotational viscosity, achieving a balanced performance that satisfies both transmittance and orientation control requirements