Conductive Structure Darkening Layer Reduces Touch Panel Reflectivity
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Solution Overview
Problem
Touch panels using metal conductive patterns face issues with high reflectivity, leading to visibility problems and glare due to the metal's reflective characteristics, which are not effectively addressed by existing technologies.
Innovation Solution
A conductive structure is developed with a base, a conductive pattern, and a darkening layer applied on the upper and lower surfaces of the conductive pattern, utilizing Galvanic corrosion to reduce reflectivity and improve absorption, thereby minimizing visibility and glare.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a metal conductive pattern is used in a touch panel, then conductivity is improved, but reflectivity increases causing visibility problems and glare
Solution Approach 1:
The patent applies composite materials by combining metal conductive patterns with a darkening layer coating. The metal layer provides high conductivity while the darkening layer coating reduces reflectivity, creating a composite structure that achieves both low resistance and low reflectivity properties simultaneously.
Solution Approach 2:
The patent changes the optical parameters of the conductive pattern by applying a darkening layer coating that alters the reflectivity characteristics. This coating modifies the optical properties without significantly affecting the electrical conductivity, allowing the metal pattern to maintain its conductive function while reducing visual glare.
2Object-affected harmful factors
If a darkening layer is added to reduce reflectivity, then visibility and contrast are improved, but device complexity increases
Solution Approach 1:
The patent applies color changes by introducing a darkening layer coating that alters the optical appearance of the metal conductive pattern. This coating changes the reflectivity and visual characteristics of the pattern, reducing glare and improving contrast without requiring fundamental structural changes to the touch panel.
3Reliability
If metal minute line is used instead of ITO, then conductivity is improved, but pattern recognition occurs due to high reflection
Solution Approach 1:
The patent introduces a darkening layer coating as an intermediary between the metal conductive pattern and the external environment. This intermediate layer acts as a mediator that reduces the direct interaction between light and the metal pattern, thereby minimizing reflection and preventing pattern recognition while preserving the electrical conductivity function.
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 introduction of a darkening layer significantly reduces the total reflectivity of the touch panel, improving visibility and contrast characteristics by controlling light reflection and absorption, resulting in a lower reflectivity of 5% or less, enhancing the overall performance of the touch panel.
Implementation Method 1
a darkening layer is introduced on a visible side of the conductive pattern, such that it is possible to prevent reflection due to the conductive pattern
Implementation Method 2
inducing Galvanic corrosion of the patterned darkening layer
Data Source
AI summary
Provided are a conductive structure including a) a base, b) a conductive pattern provided on at least one side of the base, and c) a darkening layer provided on the upper surface and lower surface of the conductive pattern, provided on at least a part of the side of the conductive pattern, and provided in an area corresponding to the conductive pattern area, and a touch panel including the same and a manufacturing method thereof.