Stretchable Cholesteric Liquid Crystal Transfer for Tunable Reflection
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Solution Overview
Problem
Existing liquid crystal elements lack stretchability and efficient manufacturing methods, limiting their versatility and ease of production.
Innovation Solution
A liquid crystal element comprising a stretchable substrate, adhesive layer, and cholesteric liquid crystal layer with a plasticizer, allowing for easy manufacturing by transferring the cholesteric liquid crystal layer from an unstretchable support to a stretchable substrate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a composite structure with cholesteric liquid crystal elastomer between substrates is used, then the liquid crystal element can reflect light with specific wavelength, but the element lacks stretchability
Solution Approach 1:
The patent changes the physical-chemical parameters of the liquid crystal layer by incorporating a plasticizer, which modifies the glass transition temperature and enables the layer to become stretchable while preserving its cholesteric phase and light reflection properties
Solution Approach 2:
The patent creates a composite structure combining the cholesteric liquid crystal layer with a plasticizer and a stretchable substrate, where the plasticizer acts as a mediator that enables mechanical deformation while maintaining the liquid crystal's optical functionality
2Productivity
If traditional manufacturing methods are used, then the liquid crystal element can be produced, but the manufacturing process is complex and difficult
Solution Approach 1:
The patent applies preliminary action by forming the cholesteric liquid crystal layer on an unstretchable support body first, allowing the layer to be prepared and stabilized before transferring it to the final stretchable substrate, simplifying the overall manufacturing process
Solution Approach 2:
The patent uses an unstretchable support body as an intermediary medium to facilitate the formation and handling of the cholesteric liquid crystal layer, making the transfer to the stretchable substrate easier and more controllable
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 solution provides a stretchable liquid crystal element with adjustable reflective properties and simplified manufacturing, enabling color change based on stretch and distortion.
Implementation Method 1
The cholesteric liquid crystal has a property of reflecting light having a specific wavelength depending on a helical pitch
Implementation Method 2
a property of reflecting light having a specific wavelength
Data Source
AI summary
According to one embodiment, a liquid crystal element manufacturing method includes forming an alignment layer on a support body, forming a cholesteric liquid crystal layer on the alignment layer, forming an adhesive layer on the cholesteric liquid crystal layer, adhering a substrate having stretchability by the adhesive layer, and peeling the cholesteric liquid crystal layer from the alignment layer.