Liquid Crystal Composition for Faster Display Panel Response
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Solution Overview
Problem
The performance of liquid crystal materials in liquid crystal display panels needs improvement to enhance response time.
Innovation Solution
A liquid crystal composition comprising at least two first compounds, at least one second compound, and at least one third compound, each with specific structural formulas, is used to adjust properties such as clearing point, viscosity, and dielectric anisotropy to improve response time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If conventional liquid crystal materials are used, then the display panel can maintain basic display function, but the response time cannot be improved due to inadequate material performance
Solution Approach 1:
The patent employs a composite liquid crystal composition comprising multiple compounds with specific structures (Formula I, II, and III compounds in defined ratios). This composite approach combines materials with different properties to achieve both fast response time and reliable display performance, resolving the contradiction between speed improvement and performance stability.
Solution Approach 2:
The patent systematically adjusts critical material parameters including viscosity (reduced to 40-80 mPa·s), clearing point (maintained at 65-95°C), dielectric anisotropy (Δε = -2.0 to -4.0), and elastic coefficients (K11, K33, K22 within specific ranges). These parameter optimizations enable faster response while maintaining display reliability.
2Loss of time
If liquid crystal material properties are optimized for faster response, then response time improves, but other display performance parameters may deteriorate
Solution Approach 1:
The patent performs multi-parameter optimization simultaneously: reducing viscosity to 40-80 mPa·s for faster response, maintaining clearing point at 65-95°C for thermal stability, controlling dielectric anisotropy (Δε = -2.0 to -4.0) for electrical performance, and adjusting elastic coefficients for mechanical stability. This balanced parameter tuning achieves fast response without sacrificing display performance.
Solution Approach 2:
The composite composition integrates Formula I compounds (15-65%), Formula II compounds (1-15%), and Formula III compounds (1-20%) with specific functional characteristics. This material synergy enables the liquid crystal to achieve both rapid response and comprehensive display performance across multiple parameters.
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 reduces response time by optimizing viscosity and dielectric anisotropy, enhancing high-temperature resistance, and maintaining suitable light transmittance, thereby shortening response time from 30 ms to 25 ms.
Implementation Method 1
By applying voltage to the liquid crystal layer, the liquid crystal display panel can adjust and control the optical properties of materials in the liquid crystal layer
Data Source
AI summary
Embodiments of the present disclosure disclose a liquid crystal composition, which includes at least two first compounds, at least one second compound, and at least one third compound. The first compound has a structure represented by formula (I), the second compound has a structure represented by formula (II), and the third compound has a structure represented by formula (III). The first compound includes at least two of compounds represented by formula (I-a), formula (I-b), and formula (I-c). According to the present disclosure, the liquid crystal composition including first compounds, second compound, and third compound is provided, and the first compound has a compound with a specific structure.