Multi-Layer Liquid Crystal Element Low Voltage Switching
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Solution Overview
Problem
The existing polymer-dispersed liquid crystal elements require a high voltage of approximately 100 V to switch the orientation state of liquid crystal molecules, even when they form a three-dimensional network structure.
Innovation Solution
A liquid crystal element is designed with multiple layers, each containing macromolecules that form a three-dimensional network structure, allowing the orientation state of liquid crystal molecules to be switched using a low voltage by controlling the potential differences between electrodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a three-dimensional network structure of macromolecules is formed in the liquid crystal layer, then the response speed of liquid crystal molecules is improved (sub-millisecond response), but the voltage required for switching increases significantly (approximately 100 V)
Solution Approach 1:
The liquid crystal element is divided into multiple liquid crystal layers (first liquid crystal layer, second liquid crystal layer, etc.), each containing macromolecules that form three-dimensional network structures. This segmentation allows the system to achieve fast response speeds while reducing the voltage required for switching compared to a single-layer structure with the same total thickness.
Solution Approach 2:
The invention transitions from a single-layer structure to a multi-layer structure, adding the dimension of layering. Each layer independently contains macromolecules forming three-dimensional networks, enabling the system to maintain fast response characteristics while reducing the electrical stress and voltage requirements on any single layer.
2Stability of the object's composition
If a three-dimensional network structure is formed in the liquid crystal layer, then the structural stability is improved, but the device complexity increases
Solution Approach 1:
The liquid crystal element is divided into multiple liquid crystal layers (first liquid crystal layer, second liquid crystal layer, etc.), each containing macromolecules that form three-dimensional network structures. This segmentation allows the system to achieve fast response speeds while reducing the voltage required for switching compared to a single-layer structure with the same total thickness.
Solution Approach 2:
Multiple liquid crystal layers are combined between the electrodes, with each layer containing macromolecules that form three-dimensional networks. The layers work together to provide structural stability and fast response characteristics while distributing the electrical stress across multiple interfaces.
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 proposed solution enables the efficient switching of liquid crystal molecule orientations using a significantly lower voltage, while maintaining the three-dimensional network structure, thus improving the operational efficiency and reducing power consumption.
Implementation Method 1
The plurality of first liquid crystal molecules and the plurality of second liquid crystal molecules are aligned in the predetermined direction or in a state where the plurality of first liquid crystal molecules and the plurality of second liquid crystal molecules are aligned in a direction across the predetermined direction
Implementation Method 2
A state of the liquid crystal element is switched to either one of a first state and a second state by application of voltage
Implementation Method 3
The first macromolecules form a three-dimensional network structure in the first liquid crystal layer. The second macromolecules form a three-dimensional network structure in the second liquid crystal layer
Data Source
AI summary
A liquid crystal element (100) includes a first electrode (20), a first liquid crystal layer (40), a second electrode (50), a second liquid crystal layer (70), and a third electrode (80). The first electrode (20) has light transmittance. The first liquid crystal layer (40) contains first macromolecules and a plurality of first liquid crystal molecules. The second electrode (50) has light transmittance. The second liquid crystal layer (70) contains second macromolecules and a plurality of second liquid crystal molecules. The first liquid crystal layer (40) is placed between the first electrode (20) and the second electrode (50). The second liquid crystal layer (70) is placed between the second electrode (50) and the third electrode (80). The first macromolecules form a three-dimensional network structure in the first liquid crystal layer (40). The second macromolecules form a three-dimensional network structure in the second liquid crystal layer (70).