Polymerizable Compound Structure for Liquid Crystal Display Solubility
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Solution Overview
Problem
Existing polymerizable compounds used in liquid crystal display devices have poor solubility, slow polymerization rates, and low polymerization degrees, leading to residual issues and suboptimal display performance.
Innovation Solution
A novel polymerizable compound with a specific structure, including acrylate, methacrylate, or fluoroacrylate groups, and specific linking groups, is synthesized through Suzuki coupling and subsequent reactions, offering improved solubility and polymerization efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If existing polymerizable RM is used, then the liquid crystal display element can be manufactured, but the solubility is poor and polymerization rate is slow
Solution Approach 1:
The patent modifies the chemical structure of the polymerizable compound by introducing specific molecular groups and adjusting molecular weight parameters. The general formula introduces variable groups (R1-R6) that can be adjusted to optimize both solubility and polymerization rate, representing a parameter change approach to resolve the contradiction between these two properties.
Solution Approach 2:
The invention creates a composite molecular structure combining liquid crystal compounds with polymerizable groups in a specific architectural framework. This composite approach allows the molecule to exhibit both good solubility characteristics and high polymerization reactivity, resolving the contradiction between these two properties that plague existing single-function compounds.
2Manufacturing precision
If existing polymerizable RM is used, then polymerization can occur, but the polymerization degree is low and residues remain
Solution Approach 1:
The patent optimizes the molecular structure parameters including the type of polymerizable groups (acrylate, methacrylate, fluoroacrylate), the linking groups (Z1-Z2), and substituent patterns (L1-L6) to achieve more complete polymerization. These parameter changes enable higher conversion rates and reduce residual monomer content, directly addressing the contradiction between polymerization completeness and residue reduction.
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 new compound exhibits better solubility, faster polymerization rates, higher polymerization completeness, and reduced residues, enhancing display quality and reducing residual impurities.
Implementation Method 1
The PSVA-type display element is manufactured by injecting a polymerizable composition comprising a liquid crystal compound and a polymerizable compound between substrates, followed by ultraviolet radiation and polymerization in a state where liquid crystal molecules are aligned.
Data Source
AI summary
The disclosure belongs to the technical field of liquid crystal materials, and specifically relates to a polymerizable compound, a preparation method therefor, and the use thereof. The polymerizable compound has a structure as shown in general formula I. Compared with the existing polymerizable RM, the polymerizable compound has the advantages of a good solubility, a faster polymerization rate, a more complete extent of polymerization, and less residues, thereby improving the problem of poor display to a great extent.