Light-Shielding Resin Composition Moisture Resistance
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Solution Overview
Problem
The existing blue color-shielding black powders used in light-shielding applications, such as in liquid crystal display devices and solid-state imaging elements, lack sufficient moisture resistance when formed into patterned cured films.
Innovation Solution
A light-shielding resin composition comprising metal nitride or oxynitride particles of transition metals with specific electronegativity, including hafnium and tungsten, along with a polymerization initiator and a low-molecular compound with ethylenically unsaturated groups, to enhance the moisture resistance of the cured film.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If blue color-shielding black powder (metal oxynitride) is used for light-shielding applications, then light-shielding properties are improved, but moisture resistance of the cured film deteriorates
Solution Approach 1:
The patent changes the chemical composition parameters of the light-shielding pigment by introducing specific transition metals (electronegativity 1.22-1.80) combined with hafnium or tungsten, achieving both high light-shielding properties and improved moisture resistance in the cured film
Solution Approach 2:
The patent creates a composite light-shielding pigment system combining transition metal nitride/oxynitride with hafnium or tungsten compounds, where the synergistic effect of multiple materials provides both excellent light-shielding performance and enhanced moisture resistance
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 produces a cured film with improved moisture resistance, suitable for use in color filters, light-shielding films, solid-state imaging elements, and image display devices, maintaining excellent light-shielding properties.
Implementation Method 1
a polymerization initiator; and a low-molecular compound containing an ethylenically unsaturated group
Data Source
AI summary
A light-shielding resin composition contains: a light-shielding pigment which is one or more selected from the group consisting of metal nitride-containing particles containing an atom A and metal oxynitride-containing particles containing the atom A; and a resin, in which the light-shielding pigment contains at least one of a nitride or an oxynitride of a transition metal having an electronegativity of 1.22 to 1.80, among transition metals of groups 3 to 7, and the atom A is at least one selected from the group consisting of hafnium and tungsten, and is an atom different from the transition metal.