Precursor Film for Stretchable 3D Touch Panel Sensors
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conductive films with three-dimensional shapes are needed for improved touch panel operability, but existing methods face challenges in achieving sufficient stretchability and low energy curing sensitivity, with previous approaches either lacking in stretchability or requiring high exposure doses.
Innovation Solution
A precursor film comprising a substrate with a plated layer precursor layer containing polyfunctional acrylamide or methacrylamide monomers, a monofunctional monomer, and a polymerizable polymer, where the monofunctional monomer improves stretchability and the polymerizable polymer enhances curing sensitivity, with specific solubility parameters and functional groups for improved platability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a plated layer is formed using conventional composition (WO 2018/034291 A), then the plated layer can be obtained, but the stretchability of the plated layer is insufficient and it is difficult to deform into desired three-dimensional shapes
Solution Approach 1:
The patent changes the chemical composition parameters of the plated layer by incorporating polymerizable monomers (acrylamide or methacrylamide groups) and polymerizable polymers that can undergo polymerization upon exposure to light or other energy sources. This transformation from a non-polymerizable to a polymerizable composition enables the plated layer to be deformed into three-dimensional shapes while maintaining structural integrity, as the polymerization process creates a flexible yet stable network structure that can accommodate complex geometries.
2Reliability
If a plated layer precursor layer is formed using conventional composition (WO 2016/159136 A), then the plated layer can be obtained, but the sensitivity is low and high exposure dose is required for curing
Solution Approach 1:
The patent modifies the chemical composition by incorporating polymerizable monomers with specific functional groups (acrylamide or methacrylamide) that have high reactivity toward polymerization. These monomers are designed to undergo rapid polymerization upon exposure to light or other energy sources, significantly improving the curing sensitivity of the plated layer precursor layer. The presence of these reactive functional groups reduces the exposure dose required for complete curing, as they can initiate and propagate polymerization chains more efficiently than conventional compositions.
3Reliability
If polyfunctional acrylamide or methacrylamide monomers are used in the plated layer precursor layer, then the sensitivity of the plated layer precursor layer is improved and less energy is required for curing, but the complexity of the composition increases
Solution Approach 1:
The patent employs polymerizable monomers that perform multiple functions simultaneously: they serve as both the binding matrix for the plated layer and as the curable component that enables three-dimensional shaping. The acrylamide or methacrylamide functional groups provide both adhesion to the substrate and plating catalyst, while also being capable of polymerization upon energy exposure. This multi-functionality reduces the need for separate additives or components, thereby managing composition complexity while achieving improved curing sensitivity and shape capability.
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 solution provides a conductive film with excellent stretchability and reduced energy requirements for curing, enabling the production of conductive films suitable for three-dimensional touch panel applications with enhanced sensitivity and platability.
Implementation Method 1
the plated layer precursor layer is cured in a pattern shape by energy application to form a patterned plated layer
Data Source
AI summary
The present invention provides a precursor film for producing a conductive film, the precursor film including: a substrate; and a plated layer precursor layer disposed on the substrate, in which the plated layer precursor layer includes a polyfunctional monomer, a monofunctional monomer, and a polymer which has a functional group interacting with a plating catalyst or a precursor of the plating catalyst and has a polymerizable functional group.