High Dielectric Liquid Crystal Material for Capacitors
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Solution Overview
Problem
There is a need for a liquid crystal material with a large dielectric constant suitable for electronic devices, particularly one that can be easily formed and maintains a high dielectric constant over a wide temperature range, as existing materials like phenazine deuterated chloranilic acid crystals are not liquid crystals.
Innovation Solution
A liquid crystal material that develops a specific liquid crystal phase with a dielectric constant of 1000 or more, containing compounds represented by formulas (1), (2), and (3), which exhibit high SHG light intensity and positive dielectric anisotropy, allowing for the formation of devices such as capacitors and wavelength conversion devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stress or pressure
If phenazine deuterated chloranilic acid crystal is used, then dielectric constant is improved (2000-3000), but material formability deteriorates (not a liquid crystal material)
Solution Approach 1:
The patent changes the physical state parameter from solid crystal to liquid crystal phase, enabling the material to maintain high dielectric constant while achieving liquid crystal formability and ease of manufacture through phase transition
Solution Approach 2:
The patent uses composite liquid crystal materials comprising multiple components including chiral dopants and liquid crystal hosts, achieving both high dielectric constant and liquid crystal properties that enable easy fabrication
2Ease of manufacture
If liquid crystal material is used, then ease of manufacture is improved, but dielectric constant deteriorates (lower than 1000)
Solution Approach 1:
The patent optimizes molecular structure parameters of liquid crystal components and adjusts composition ratios to achieve dielectric constant of 1000 or more while maintaining liquid crystal phase and formability
Solution Approach 2:
The patent develops composite liquid crystal formulations combining specific liquid crystal hosts with chiral dopants and other additives, achieving enhanced dielectric constant while preserving liquid crystal properties and ease of manufacture
3Adaptability or versatility
If temperature range is expanded, then adaptability is improved, but dielectric constant deteriorates (decreases with temperature)
Solution Approach 1:
The patent selects liquid crystal materials with appropriate clearing points and phase transition temperatures to maintain the desired dielectric constant over a wide operating temperature range, adapting material properties to operational conditions
Solution Approach 2:
The patent adjusts the molecular structure and composition of liquid crystal materials to flatten the temperature dependence of dielectric constant, maintaining high values across expanded temperature ranges
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 liquid crystal material achieves a large dielectric constant of 1000 or more over a wide temperature range, with a relaxation frequency in the high frequency region and significant SHG light intensity, enhancing the performance of electronic devices like capacitors and display devices.
Implementation Method 1
SHG light intensity of the liquid crystal material at the temperature at which the specific liquid crystal phase is developed is 2 to 10 times or more larger than SHG light intensity of the liquid crystal material at a temperature at which the liquid crystal material develops a phase different from the specific liquid crystal phase
Implementation Method 2
a liquid crystal material exhibiting a dielectric constant of 1000 or more at a temperature at which a specific liquid crystal phase is developed
Data Source
AI summary
One aspect is contemplated for providing a device having a liquid crystal material exhibiting a dielectric constant of 1000 or more at a temperature at which a specific liquid crystal phase is developed, and a unit configured to apply voltage to the liquid crystal material at the temperature at which the specific liquid crystal phase is developed.