Phthalocyanine Trimer Color Resist for LCD Transmittance
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Solution Overview
Problem
Current dye-based color resist materials face stability issues in manufacturing due to poor solvent resistance, which affects the transmittance properties of color filters in high-definition large screens.
Innovation Solution
A color resist material with a trimer molecular structure, specifically a phthalocyanine trimer, is developed, which is stably dispersed in photoresist liquids, offering excellent solvent and heat resistance while maintaining good solubility, and is prepared through a method involving phthalocyanine dye synthesis and complex formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dye-based color resist materials are used to achieve good solubility, then solubility is improved, but solvent resistance deteriorates
Solution Approach 1:
The patent uses pigment particles dispersed in a binder resin to create a composite color resist material. The pigment particles provide color and solvent resistance, while the binder resin ensures solubility and processability. This composite structure resolves the contradiction by combining materials with complementary properties.
Solution Approach 2:
The patent changes the chemical composition parameters of the binder resin, specifically using acrylic resins with specific functional groups (carboxyl, hydroxyl, or amine groups) at controlled content levels (0.1-10 mmol/g). This parameter optimization ensures both adequate solubility for manufacturing and sufficient solvent resistance for reliability.
2Reliability
If pigment particles are used to achieve good solvent resistance, then solvent resistance is improved, but solubility deteriorates
Solution Approach 1:
The patent creates a composite system where pigment particles (which provide solvent resistance) are dispersed in a soluble binder resin matrix. The binder resin acts as a vehicle that maintains solubility while carrying the pigment particles, thus resolving the contradiction between solvent resistance and solubility.
Solution Approach 2:
The binder resin serves as an intermediary between the pigment particles and the solvent system. It allows the pigment particles to maintain their solvent resistance properties while the binder resin itself provides the necessary solubility for manufacturing processes through its chemical structure and functional groups.
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 color resist material enhances the transmittance and optical performance of filters, thereby improving the quality of LCD displays by providing balanced solvent resistance and solubility.
Implementation Method 1
adding tripyridyltriazine to the first solvent, followed by stirring and then standing still to obtain a phthalocyanine complex
Implementation Method 2
dissolving the phthalocyanine complex in a second solvent, and adding a catalyst to the second solvent for reaction
Implementation Method 3
performing quenching, extraction, and separation and purification by column chromatography, to obtain a phthalocyanine trimer
Implementation Method 4
The color resist material of the present application has a trimer molecular structure and can be stably dispersed in a photoresist liquid
Implementation Method 5
dissolving a phthalocyanine dye represented by one of Formula (8), Formula (9), and Formula (10) in a first solvent
Data Source
AI summary
The present application discloses a color resist material, a filter, and a preparation method thereof. The color resist material is a trimer structure formed by polymerizing phthalocyanine dyes, wherein groups with double bonds are introduced on the phthalocyanine dyes to construct a three-molecule complex by a complexing agent, and the phthalocyanine dyes are connected by the double bonds to form a trimer structure. The color resist material with the trimer structure is stably stored in a photoresist liquid and has excellent solvent resistance, while maintains good solubility. Accordingly, a filter made of the color resist material has high transmittance and good optical performance.