Triarylmethane Copolymer Color Filter Resists Heat and Solvents
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Solution Overview
Problem
Current coloring compositions for color filters lack sufficient heat resistance and solvent resistance, which are essential for advanced applications in liquid crystal display devices such as monitors and televisions.
Innovation Solution
A coloring composition comprising a polymer TP with a triarylmethane structure and an acid group, where the repeating unit B is present in the amount of 12% to 60% by mass, along with a polymerizable compound, to form a cured film with improved heat and solvent resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional coloring compositions are used for color filters, then the manufacturing process is simple, but the heat resistance and solvent resistance are insufficient
Solution Approach 1:
The invention uses a copolymer consisting of repeating unit A (with triarylmethane structure for coloration) and repeating unit B (with acid group for solubility and compatibility). This composite polymer structure combines the advantages of both units to achieve excellent heat resistance, solvent resistance, and pattern forming properties while maintaining manufacturing feasibility.
Solution Approach 2:
The invention specifies precise compositional parameters: repeating unit B content of 10-60 mass% (optimally 20-50 mass%), weight-average molecular weight of 10,000-100,000, and specific structural parameters of the repeating units. By controlling these parameters, the invention optimizes the balance between heat resistance, solvent resistance, and processability.
2Stability of the object's composition
If the polymer contains high content of repeating unit B with acid group, then the solubility and compatibility improve, but the heat resistance may deteriorate
Solution Approach 1:
The invention optimizes the content of repeating unit B to be 10-60 mass% (optimally 20-50 mass%). This parameter range ensures sufficient solubility and compatibility while maintaining excellent heat resistance. The specific structural parameters of both repeating units are also controlled to achieve the desired balance between solubility and thermal stability.
Solution Approach 2:
The polymer structure is designed with localized functional regions: repeating unit A provides thermal stability and coloration through its triarylmethane structure, while repeating unit B provides solubility and compatibility through its acid group. This local differentiation of functions within the copolymer chain achieves the desired balance of properties.
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 composition achieves excellent heat resistance and solvent resistance, enhancing the performance of color filters by improving the solubility and compatibility of the cured film, thereby maintaining its integrity and pattern forming properties.
Implementation Method 1
a coloring composition comprising: a polymer TP consisting only of a repeating unit A having at least one triarylmethane structure selected from General Formulae (TP1) and (TP2), and a repeating unit B having an acid group; and a polymerizable compound
Data Source
AI summary
Provided are a coloring composition having excellent heat resistance and solvent resistance, a cured film, a color filter, a method for manufacturing a color filter, a solid-state imaging device, an image display device, and a polymer.The coloring composition includes a polymer TP consisting only of a repeating unit A having a triarylmethane structure and a repeating unit B having an acid group, and a polymerizable compound, in which the polymer TP contain the repeating unit B in the amount of 12% to 60% by mass with respect to all the repeating units of the polymer TP.