Liquid Crystal Composition for Subzero Display Response
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Solution Overview
Problem
Liquid crystal displays malfunction in extremely cold environments due to increased reaction times and image quality deterioration, necessitating a solution that allows operation at 0°C or lower without heaters.
Innovation Solution
A liquid crystal composition containing a polymerizable organic compound and a liquid crystal compound with a solid phase-nematic phase transition temperature of 0°C or lower, along with a specific content of organic compounds to maintain flexibility and responsiveness, and a liquid crystal element structure with conductive films and a polymerizable organic compound to support low-temperature operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a heater using an ITO film is provided in the display panel, then the display can be operated at low temperatures, but the manufacturing process becomes more complex and additional processing steps are required
Solution Approach 1:
The invention extracts the heating function from a separate ITO film heater component and integrates it into the liquid crystal composition itself through polymerizable compounds that generate heat via electrical field application. This eliminates the need for separate heater processing while maintaining low-temperature operability
Solution Approach 2:
The invention merges the liquid crystal material and heating function into a single integrated composition. The polymerizable organic compound serves dual purposes as both a liquid crystal material and a heating element when electrical field is applied, combining multiple functions into one system
2Temperature
If the liquid crystal display is cooled in an extremely cold environment, then the display can be used in cold conditions, but the reaction time increases and image quality deteriorates
Solution Approach 1:
The invention changes the physical and chemical parameters of the liquid crystal composition by incorporating polymerizable organic compounds with specific molecular structures and transition temperatures. This adjusts the viscosity and response characteristics to maintain fast response times even at extremely low temperatures
Solution Approach 2:
The invention uses a composite liquid crystal composition containing multiple components including polymerizable organic compounds, liquid crystal compounds, and additives. This composite structure provides both low-temperature stability and fast response characteristics that single-component systems cannot achieve
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 composition and element enable smooth operation at 0°C or lower, maintaining flexibility, responsiveness, and preventing electric field inhibition, thus ensuring consistent display performance.
Implementation Method 1
a liquid crystal composition containing a polymerizable organic compound and a liquid crystal compound
Implementation Method 2
the liquid crystal compound has a solid phase-nematic phase transition temperature or smectic phase-nematic phase transition temperature of 0°C or lower
Data Source
AI summary
A liquid crystal composition contains a polymerizable organic compound and a liquid crystal compound. The liquid crystal compound has a solid phase-nematic phase transition temperature or smectic phase-nematic phase transition temperature of 0° C. or lower. The content of the polymerizable organic compound having a glass transition temperature of 0° C. or lower based on a total amount of the liquid crystal composition is 10 to 60 mass %. A liquid crystal element has a liquid crystal layer, and the liquid crystal layer contains such a liquid crystal composition.