Photosensitive Resin Composition for Touch Panel Wire Rust Prevention
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Solution Overview
Problem
Existing photosensitive resin compositions for touch panels lack effective development residue inhibitory and rust preventive properties for exposed wires, particularly after heat treatment, which can lead to corrosion and adhesion issues.
Innovation Solution
A photosensitive resin composition comprising a compound with a heterocyclic structure containing oxygen, nitrogen, or sulfur atoms, combined with an alkali-soluble binder polymer, an ethylenically unsaturated compound, and a photopolymerization initiator, which forms a protective film that inhibits development residue and rust on exposed wires during heat treatment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a transparent resin layer is formed using conventional photosensitive resin composition, then the electrode patterns and lead wires are protected, but development residues remain and rust occurs on exposed wires after heat treatment
Solution Approach 1:
The invention changes the chemical composition parameters of the photosensitive resin by incorporating specific heterocyclic compounds (pyridine, pyrimidine, or triazine rings) with multiple metal-binding functional groups. This compositional parameter change enables the resin to provide both protective coverage and rust prevention on exposed wires after heat treatment, eliminating development residues while maintaining electrode protection.
Solution Approach 2:
The invention creates a composite photosensitive resin system combining the heterocyclic compound (as rust inhibitor) with the binder polymer and photopolymerization initiator. This composite material approach integrates multiple functions: the heterocyclic compound provides rust prevention through metal coordination, the binder provides film formation and adhesion, and the photopolymerization initiator enables curing. The synergistic combination resolves the contradiction between protection and harmful residue generation.
2Reliability
If a photosensitive resin composition is used to form a protective film, then the film provides basic protection, but it lacks effective rust preventive property for exposed wires after heat treatment
Solution Approach 1:
The invention modifies the chemical composition of the photosensitive resin by incorporating heterocyclic compounds with specific structural parameters (pyridine, pyrimidine, or triazine rings) and multiple metal-binding functional groups. This parameter change transforms the resin from providing only basic protective coverage to actively preventing rust on exposed wires through metal coordination, while maintaining film formation capabilities.
Solution Approach 2:
The heterocyclic compound acts as an intermediary substance between the photosensitive resin and the exposed wire metal surface. It coordinates with metal atoms on the wire surface through its multiple functional groups, forming a protective complex that prevents rust formation. This intermediary mechanism enables the resin to provide rust prevention without compromising its protective film formation function.
3Object-affected harmful factors
If conventional rust inhibitor compounds are used, then some rust prevention is achieved, but development residue inhibitory property is insufficient
Solution Approach 1:
The invention changes the molecular structure parameters of the rust inhibitor by selecting heterocyclic compounds with aromatic ring structures (pyridine, pyrimidine, or triazine) and multiple functional groups. This structural parameter change improves both rust prevention capability (through enhanced metal coordination) and development residue inhibition (through better solubility and cleaner development characteristics), resolving the contradiction between these two properties.
Solution Approach 2:
The invention creates a composite system where the heterocyclic rust inhibitor works synergistically with the binder polymer and photopolymerization initiator. The heterocyclic compound provides rust prevention and development residue inhibition, while the other components ensure proper film formation and curing. This composite approach allows the rust inhibitor to function effectively without generating development residues.
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 provides excellent development residue inhibitory and rust preventive properties, ensuring the protection of wires and electrodes in touch panels, enhancing the durability and reliability of the touch panel's protective film.
Implementation Method 1
a photopolymerization initiator
Implementation Method 2
have a structure having 3 or more sites having an ability to adsorb to metal elements
Data Source
AI summary
A photosensitive resin composition contains a compound A which has a heterocyclic structure having at least one atom of an oxygen atom, a nitrogen atom, or a sulfur atom in a ring structure, and has at least one functional group selected from the group consisting of —SH, —OH, —COOH, —NH2, and —CONH2, an alkali-soluble binder polymer, an ethylenically unsaturated compound, and a photopolymerization initiator.