Touch Window Electrode Oxidation for Anti-Reflection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Indium tin oxide (ITO) electrodes in touch windows are expensive, prone to physical damage, and exhibit high resistance, making them unsuitable for flexible devices and large touch panels, while alternative mesh-shaped electrodes face issues with insufficient filling and reliability.
Innovation Solution
A touch window with a sensing electrode formed as a plating layer, reducing thickness and ensuring uniformity, and an anti-reflective oxide layer is formed by oxidizing the electrode layer, enhancing visibility and reliability without additional anti-reflective layers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ITO is used as the electrode material, then the transparency and electrical conductivity are improved, but the cost increases and the resistance to physical damage decreases
Solution Approach 1:
The patent replaces expensive ITO with a mesh-shaped electrode formed by metallic paste or conductive ink, which is cheaper and more durable against physical damage while maintaining electrical conductivity
Solution Approach 2:
The patent uses a composite structure combining mesh-shaped electrode with transparent insulating layers, achieving both cost reduction and improved mechanical strength while maintaining transparency
2Area of stationary object
If ITO is used for large touch panels, then the coverage area is improved, but the resistance increases
Solution Approach 1:
The patent divides the electrode into a mesh shape with multiple conductive paths, allowing current to flow through multiple parallel routes and reducing overall resistance while maintaining large area coverage
3Reliability
If metallic paste is used to form narrow line width electrodes, then the electrical conductivity is improved, but the filling completeness decreases leading to defects
Solution Approach 1:
The patent changes the physical state of the electrode material from paste to oxidized metal layer, enabling uniform thin film formation that completely fills narrow patterns without defects while maintaining electrical conductivity
4Object-affected harmful factors
If additional anti-reflective layers are formed on the electrode, then the reflection control is improved, but the overall thickness increases
Solution Approach 1:
The patent combines the anti-reflective function with the electrode layer by forming an oxide layer on the electrode surface, eliminating the need for separate anti-reflective layers and reducing overall thickness
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 reduces the overall thickness of the touch window, improves reliability, and maintains electrical properties while preventing reflection and damage, making it suitable for flexible and large-scale applications.
Implementation Method 1
an oxide layer, which may serve as an anti-reflective layer, may be formed by oxidizing a part of the electrode layer
Data Source
Figure 1
Figure 2~4
Figure 5~8
AI summary
Disclosed is a touch window. The touch window includes a substrate (100); and an electrode part (200) on the substrate (100). The sensing electrode (210 ; 300) includes a base substrate (211) formed with a pattern part (P); and an electrode layer (212) on the pattern part (P), where the electrode layer (212) has a thickness (T1) in a range of 0.03 µm to 3 µm.