Liquid Crystal Composition Single UV Alignment
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Solution Overview
Problem
Conventional vertical alignment liquid crystal display panels require a long alignment time due to two UV irradiation processes in the polymer stabilized vertical alignment (PSVA) process, which reduces efficiency.
Innovation Solution
A liquid crystal composition with a polar component and a polymerizable component, where the mass fraction of the polymerizable component is less than 0.36%, allowing complete reaction after a single UV irradiation, eliminating the need for a second UV irradiation step.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two UV irradiation processes are used in the PSVA liquid crystal alignment process, then the pretilt angles are properly formed and polymerizable components react completely, but the alignment time becomes excessively long
Solution Approach 1:
The patent combines the pretilt angle formation and polymerizable component reaction into a single UV irradiation process by optimizing the liquid crystal composition, specifically controlling the polymerizable component content at 0.1-10 wt% and using specific polar component structures, allowing both functions to be achieved simultaneously rather than requiring separate irradiation steps
Solution Approach 2:
The patent changes the chemical composition parameters of the liquid crystal, specifically the mass fraction of polymerizable components (0.1-10 wt%) and the structure of polar components, to enable complete reaction during a single UV irradiation process, thereby reducing alignment time while maintaining alignment quality
2Productivity
If the polymerizable component content is increased to ensure complete reaction, then the reaction efficiency improves, but the liquid crystal composition complexity increases
Solution Approach 1:
The patent optimizes the polymerizable component content to a specific range (0.1-10 wt%) and selects specific polar component structures, achieving complete reaction in one UV irradiation step without requiring excessive polymerizable components, thus balancing reaction efficiency with composition simplicity
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
This approach reduces the alignment time of liquid crystals and improves manufacturing efficiency by allowing the polymerizable component to react completely in one UV irradiation process, addressing the long alignment time issue in conventional methods.
Implementation Method 1
the second UV irradiation causes reaction of remaining polymerizable components in the PSVA liquid crystals
Data Source
AI summary
The present disclosure provides a liquid crystal composition, a liquid crystal display panel, and a manufacturing method of the liquid crystal display panel. Liquid crystal main monomer and polymerizable component monomer are adopted, and mass fractions of the liquid crystal main monomer and the polymerizable component monomer are controlled, so the polymerizable component monomer in the liquid crystal composition can react completely after an UV irradiation, and a second UV irradiation is dispensed. Therefore, it can reduce alignment time of liquid crystals.