Liquid Crystal Composition for Fast 3D Display Response
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional liquid crystal display devices face challenges in achieving high driving speed and reliability while maintaining low temperature stability, high dielectric anisotropy, and refractive index anisotropy, particularly in displaying 3D images with existing liquid crystal compositions.
Innovation Solution
A liquid crystal composition with high dielectric anisotropy and refractive index anisotropy, combined with improved low temperature stability, is developed, comprising a specific liquid crystal compound that optimizes properties for various liquid crystal display modes by adjusting molecular structure and concentration to enhance performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If conventional liquid crystal compositions are used to achieve high dielectric anisotropy and refractive index anisotropy, then the driving speed improves, but the low temperature stability deteriorates
Solution Approach 1:
The patent changes the chemical composition parameters of the liquid crystal mixture by incorporating specific compounds (cyclic carbonate compounds, cyclohexane compounds, and pyrimidine compounds) in optimized ratios. This composition adjustment allows achieving high dielectric anisotropy (Δε≥3.0) and refractive index anisotropy (Δn≥0.10) while maintaining low temperature stability (LTS≥-30°C) through molecular structure selection that balances these competing properties.
Solution Approach 2:
The patent creates a composite liquid crystal composition by combining multiple specific compounds in defined weight ratios. The mixture includes cyclic carbonate compounds (10-40 wt%), cyclohexane compounds (30-60 wt%), and pyrimidine compounds (10-30 wt%), forming a composite material that achieves synergistic effects for simultaneously improving driving speed through high anisotropy values and maintaining low temperature stability.
2Loss of time
If liquid crystal composition is optimized for high dielectric constant and refractive index, then response time decreases, but low temperature stability deteriorates
Solution Approach 1:
The patent optimizes the concentration parameters of specific liquid crystal compounds to achieve high dielectric constant (ε≥3.0) and refractive index (n≥0.10), which reduces response time. Simultaneously, the composition is designed with compounds having appropriate melting points and molecular structures to maintain low temperature stability (LTS≥-30°C), balancing the trade-off between fast response and temperature stability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The composition achieves improved low temperature stability, high dielectric constant, and low rotational viscosity, enabling faster response times and enhanced image quality in liquid crystal display devices, particularly for 3D imaging applications.
Implementation Method 1
The liquid crystal display device changes a transmittance ratio of light in the liquid crystal layer according to an electric field generated between each of the pixel electrodes and a common electrode
Implementation Method 2
A liquid crystal composition with high dielectric anisotropy and high refractive index anisotropy as well as improved LTS
Data Source
Figure 1~2
AI summary
A liquid crystal display device comprises a first substrate, a second substrate which faces the first substrate, an electrode part which is provided on at least one of the first substrate and the second substrate, and a liquid crystal layer which comprises a liquid crystal composition and is provided between the first substrate and the second substrate. The liquid crystal composition includes a liquid crystal compound of Formula 1. wherein R1, R2, A11, A12, A13, A21, A22, Z11, Z12, Z13, Z21, Z22, (F), a, b, c, d, and e are as described herein.