Photosensitive Ink Composition Balancing Refractive Index and Transparency
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Solution Overview
Problem
Existing cured products with high refractive index materials lack sufficient transparency.
Innovation Solution
A photosensitive ink composition incorporating a sulfide compound and a (meth)acrylate compound, along with a phosphine oxide and oxime ester compound as photopolymerization initiators, is used to form a cured product with high refractive index and transparency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a composition with metal oxide particles and fluorene compound is used to achieve high refractive index, then the refractive index is improved, but the transparency deteriorates
Solution Approach 1:
The patent changes the chemical parameters of the photopolymerizable compound by using specific compounds (sulfide compound with formula a-1 and (meth)acrylate compound with formula a-2) having defined molecular structures and functional groups, which alters the curing characteristics and optical properties of the final product to achieve both high refractive index and high transparency
Solution Approach 2:
The patent creates a composite system by combining specific photopolymerizable compounds (sulfide and (meth)acrylate), photopolymerization initiators (phosphine oxide and oxime ester), and metal oxide particles in a controlled composition ratio, resulting in a cured product that exhibits synergistic optical properties of high refractive index and high transparency
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 enables the formation of a cured product with both high refractive index and transparency, suitable for use in display panels.
Implementation Method 1
a composition in which metal oxide particles such as titanium dioxide and zirconium oxide are dispersed in an organic component, and a composition including a polymerizable compound exhibiting a high refractive index is used as highly refractive material. As such a highly refractive material, a composition including: metal oxide particles treated with a fluorene compound having a specific structure that includes a hydrolyzable silyl group; a fluorene compound having a specific structure that includes an acryloyl group; a photopolymerization initiator; and an organic solvent is disclosed
Data Source
AI summary
A liquid photosensitive ink composition capable of forming a cured product with a high refractive index and a high transparency, a cured product of the photosensitive ink composition, a display panel having a film consisting of the cured product, and a method for producing the cured product using the photosensitive ink composition. In a photosensitive ink composition including a photopolymerizable compound, and a photopolymerization initiator, a sulfide compound having specific structure and a (meth)acrylate compound having specific structure are used as the photopolymerizable compound, and a phosphine oxide compound and an oxime ester compound are used as the photopolymerization initiator.