Liquid Crystal Composition Response Time Aperture Ratio
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Solution Overview
Problem
Liquid crystal display devices face slow response times due to weak fringe fields in the center areas of domains defined by cutting patterns, which restrict pixel electrode size and aperture ratio.
Innovation Solution
A liquid crystal composition comprising specific compounds in defined weight percentages, including 5 to 15% of chemical formula 1, 25 to 40% of chemical formula 2, 10 to 25% of chemical formula 3, 20 to 30% of chemical formula 4, 15 to 25% of chemical formula 5, 0 to 10% of chemical formula 6, 0 to 10% of chemical formula 7, and 0 to 10% of chemical formula 8, is used in a liquid crystal display device to improve response time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a patterned vertically aligned (PVA) mode liquid crystal display with cutting patterns is used to enhance viewing angle, then the orientation of liquid crystal molecules is adjusted by fringe field, but the fringe field becomes weak in the center area of domains, causing delayed movement of liquid crystal molecules and slowing response time
Solution Approach 1:
The patent changes the physical and chemical parameters of the liquid crystal composition by incorporating specific compounds (Formula 1 at 5-15 wt%, Formula 2 at 25-40 wt%, Formula 3 at 10-25 wt%, Formula 4 at 20-30 wt%, Formula 5 at 15-25 wt%, and Formulas 6-8 at 0-10 wt% each) to improve response time while maintaining the PVA mode structure with cutting patterns for viewing angle enhancement
2Area of stationary object
If the pixel electrode size is increased to improve aperture ratio, then the display area increases, but the delayed movement of liquid crystal molecules in the center area restricts the size increase and does not substantially increase aperture ratio
Solution Approach 1:
The patent modifies the liquid crystal composition parameters to achieve faster response times, enabling the pixel electrode size to be increased without being constrained by slow molecular movement, thereby substantially increasing the aperture ratio
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 enhances response time while maintaining or increasing the aperture ratio, reducing motion blurring and improving display quality.
Implementation Method 1
The liquid crystal composition is disposed between the first substrate and the second substrate... 25 to 40% by weight of at least one compound of chemical formula 2
Data Source
AI summary
A liquid crystal composition including 5 to 15% by weight of at least one compound of chemical formula 1, 25 to 40% by weight of at least one compound of chemical formula 2, 10 to 25% by weight of at least one compound of chemical formula 3, 20 to 30% by weight of at least one compound of chemical formula 4, 15 to 25% by weight of at least one compound of chemical formula 5, 0 to 10% by weight of at least one compound of chemical formula 6, 0 to 10% by weight of at least one compound of chemical formula 7, and 0 to 10% by weight of at least one compound of chemical formula 8.