Resin Composition Filter Element for LCD Resolution and Transmittance
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Solution Overview
Problem
Current filter elements used in liquid crystal display devices suffer from issues such as poor resolution, transmittance, and precipitation speed disparities among black coloring agents, leading to suboptimal performance, including flicker generation and false images.
Innovation Solution
A resin composition comprising a black coloring agent with a combination of titanium black and carbon black, an ethylenically-unsaturated monomer, a solvent, a resin with a bisphenol fluorene structure, and a photoinitiator, which is used to form a filter element with improved characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a filter element is used to reduce flicker in liquid crystal display devices, then the energy saving effect is improved, but the resolution and transmittance deteriorate
Solution Approach 1:
The patent changes the chemical composition parameters of the filter element by using a specific resin system (epoxy resin with amino group and phenolic resin in defined ratios) and controlled curing conditions to achieve both low flicker and high resolution, resolving the contradiction between energy saving and manufacturing precision
Solution Approach 2:
The patent employs a composite material system combining epoxy resin and phenolic resin in specific proportions, along with titanium black and carbon black pigments, to create a filter element that simultaneously achieves low flicker ratio and high resolution, addressing the contradiction between energy efficiency and manufacturing quality
2Use of energy by moving object
If a filter element is used to reduce flicker in liquid crystal display devices, then the energy saving effect is improved, but the light transmittance deteriorates
Solution Approach 1:
The patent optimizes the resin composition parameters (epoxy resin to phenolic resin ratio, pigment concentrations, and curing conditions) to achieve a balance between flicker reduction and light transmittance, allowing the filter element to maintain both energy efficiency and adequate brightness transmission
3Speed
If titanium black is used as a black coloring agent in the filter element, then the precipitation speed is improved, but the resolution and coating uniformity deteriorate
Solution Approach 1:
The patent changes the particle size parameter of titanium black to a specific range (0.1-1.0 micrometers) and controls the resin composition to achieve optimal precipitation speed while maintaining high resolution and coating uniformity, resolving the contradiction between speed and precision
4Manufacturing precision
If the resin composition is optimized for good resolution, then the manufacturing precision is improved, but the coating uniformity and adhesion may deteriorate
Solution Approach 1:
The patent uses a composite resin system combining epoxy resin and phenolic resin with specific ratios, along with carefully selected pigments and curing agents, to achieve a balance between resolution, coating uniformity, and adhesion, resolving the contradiction between manufacturing precision and compositional stability
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 resin composition achieves good resolution, developability, adhesion, coating uniformity, and light transmittance in the cured film, effectively addressing the limitations of existing filter elements and enhancing the performance of liquid crystal display devices.
Implementation Method 1
a photoinitiator (E)... The resin composition achieves good resolution, developability, adhesion, coating uniformity, and light transmittance in the cured film
Data Source
AI summary
A resin composition and a filter element are provided. The resin composition includes a black coloring agent (A), an ethylenically-unsaturated monomer (B), a solvent (C), a resin (D), and a photoinitiator (E). The black coloring agent (A) includes a titanium black (A-1) and a carbon black (A-2). Based on a total usage amount of 100 parts by weight of the titanium black (A-1) and the carbon black (A-2), a usage amount of the titanium black (A-1) is 50 parts by weight to 75 parts by weight.