Conductive Structure Body with AlOxNy Darkening Layer for Touch Screens
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Solution Overview
Problem
Commercially available touch screen panels based on ITO transparent conductive thin films face issues with reduced touch recognition speed due to high surface resistance, requiring additional compensation chips, and suffer from visibility problems due to high reflectance and glare from metal fine pattern electrodes.
Innovation Solution
A conductive structure body comprising a substrate, a conductive pattern layer, and a darkening pattern layer made of AlOxNy (0≤x≤1.5, 0≤y≤1) is introduced, which reduces reflectance and improves absorbance, thereby enhancing visibility and concealing properties without affecting conductivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ITO transparent conductive thin films are used in touch screen panels, then conductivity is improved, but reflectance increases causing visibility problems and glare
Solution Approach 1:
The patent applies composite materials by combining ITO transparent conductive thin film with a darkening pattern layer having specific refractive index properties. This composite structure maintains the conductivity of ITO while the darkening layer reduces reflectance and glare, solving the visibility problem caused by the highly reflective ITO layer alone.
Solution Approach 2:
The patent implements local quality by creating a darkening pattern layer with specific refractive index characteristics that is applied selectively to address the reflectance issue. This localized treatment modifies only the optical properties (reduce reflectance) without affecting the electrical conductivity of the ITO layer, allowing different regions to have different functional optimizations.
2Reliability
If metal fine pattern electrodes are used to improve conductivity, then electrical performance is improved, but visibility deteriorates due to high reflectance and glare
Solution Approach 1:
The patent uses composite materials by integrating metal fine pattern electrodes with a darkening pattern layer. The metal pattern provides excellent electrical conductivity while the darkening layer with controlled refractive index reduces the glare and reflectance from the metal surfaces, thereby maintaining visibility.
Solution Approach 2:
The patent applies color changes through the darkening pattern layer that modifies the optical appearance of the metal fine pattern electrodes. This layer reduces the brightness and glare reflected from the metal patterns, effectively changing the visual perception from highly reflective to less glaring, thus improving visibility while preserving electrical performance.
3Speed
If additional compensation chips are added to touch screen panels, then touch recognition speed is improved, but device complexity increases
Solution Approach 1:
The patent extracts the need for additional compensation chips by optimizing the conductive layer structure itself. Through proper design of the conductive pattern and integration with the darkening pattern layer, the system achieves adequate touch recognition performance without requiring separate compensation circuitry, thereby reducing device complexity.
Solution Approach 2:
The patent applies multi-functionality by designing the conductive layer and darkening pattern layer to simultaneously serve multiple functions: providing electrical conductivity, reducing reflectance, and enabling touch recognition. This integrated approach eliminates the need for separate compensation chips, as the same structural elements perform multiple roles.
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 conductive structure body significantly decreases reflectance, improving visibility and touch recognition speed by reducing light reflection and diffraction, while maintaining low surface resistance, making it suitable for large-area touch screens.
Implementation Method 1
The conductive structure body significantly decreases reflectance, improving visibility and touch recognition speed by reducing light reflection and diffraction
Implementation Method 2
A conductive structure body comprising a substrate, a conductive pattern layer, and a darkening pattern layer comprising AlOxNy (0≤x≤1.5, 0≤y≤1) is introduced, which reduces reflectance and improves absorbance
Data Source
AI summary
An exemplary embodiment of the present invention relates to a conductive structure body that comprises a darkening pattern layer having AlOxNy, and a method for manufacturing the same. The conductive structure body according to the exemplary embodiment of the present invention may prevent reflection by a conductive pattern layer without affecting conductivity of the conductive pattern layer, and improve a concealing property of the conductive pattern layer by improving absorbance. Accordingly, a display panel having improved visibility may be developed by using the conductive structure body according to the exemplary embodiment of the present invention.