Resin Composition for Touch Panel Sensors with Scratch and Heat Resistance
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Solution Overview
Problem
Conventional resin compositions for optical instruments face challenges in providing both sufficient hardness and heat resistance, with acrylate-based materials lacking scratch resistance and inorganic materials suffering from heat-induced discoloration and poor adhesion.
Innovation Solution
A resin composition comprising developable polysiloxane, polymerizable polysiloxane, and a polyfunctional monomer, specifically using a compound with a triazine ring skeleton, along with a phosphate compound and refractive index enhancement agent, to form a resin film that maintains adhesion and transparency even at high temperatures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If acrylate type material is used for resin composition, then light transmission is improved, but scratch resistance deteriorates
Solution Approach 1:
The patent uses a composite resin composition containing both organic acrylate monomers (for light transmission) and inorganic particles (for hardness and scratch resistance). This composite approach allows the resin film to simultaneously achieve optical clarity and mechanical durability that neither material could provide alone.
2Strength
If inorganic type resin composition is used, then scratch resistance is improved, but heat resistance deteriorates
Solution Approach 1:
The patent creates a hybrid resin system combining organic polymer matrices with inorganic particles, where the organic component provides heat stability and the inorganic component provides scratch resistance. This composite structure resolves the contradiction by distributing functional properties to appropriate material phases.
3Illumination intensity
If conventional inorganic type resin composition is used for high temperature treatment, then transparency is maintained, but adhesion deteriorates
Solution Approach 1:
The patent modifies the resin composition parameters by incorporating specific adhesion promoters and optimizing the ratio of organic to inorganic components. These parameter changes enable the resin to maintain both transparency and adhesion properties after high-temperature treatment, overcoming the limitations of conventional inorganic resin compositions.
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 excellent adhesion and heat resistance, preventing yellowing and peeling during high-temperature treatments, while also enhancing the refractive index for invisible electrode patterns, thus improving the durability and visibility of touch panels and other optical instruments.
Implementation Method 1
a polymerizable polysiloxane containing a radically polymerizable group
Implementation Method 2
the phosphate compound can make a resin film excellent in adhesion to a transparent electrode material such as ITO
Data Source
AI summary
The present invention has a main purpose of providing a resin composition capable of forming a resin film excellent in hardness and heat resistance. To achieve the purpose described above, the present invention provides a resin composition, comprising: a developable polysiloxane containing a developable group and substantially no radically polymerizable group; a polymerizable polysiloxane containing a radically polymerizable group and substantially no developable group; and a polyfunctional monomer.