Touch Electrode Insulating Lines for Light Transmittance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional touch panels suffer from reduced light transmittance and visual trace phenomena due to the wide width of elongated insulating blocks between electrode lines, which affect their appearance and functionality.
Innovation Solution
A touch electrode device featuring narrow insulating lines and blocks on a transparent substrate, with first and second electrode lines made of light-transmissive materials like metal nanowires or transparent conductive oxides, and conductive connecting portions, where insulating lines are integrated or separately formed to minimize visual impact and enhance transmittance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If elongated insulating blocks are used to electrically insulate vertical electrode lines from horizontal electrode lines, then electrical insulation is achieved, but light transmittance is reduced and trace phenomenon occurs
Solution Approach 1:
The insulating structure is segmented into two functional parts: insulating blocks positioned only at junctions where electrode lines intersect, and narrow insulating lines extending along the electrode lines. This segmentation allows the insulating function to be distributed efficiently, minimizing the total area occupied by insulating materials and thereby maximizing light transmittance while maintaining electrical insulation at critical junction points.
Solution Approach 2:
Insulating materials are applied with varying widths based on local requirements: wide insulating blocks at junctions where electrical insulation is most critical, and narrow insulating lines along the electrode lines where minimal insulation is sufficient. This local quality approach ensures electrical insulation is provided exactly where needed while minimizing the overall impact on light transmittance.
2Reliability
If elongated insulating blocks are used for electrical insulation, then insulation function is provided, but visual appearance deteriorates due to trace phenomenon
Solution Approach 1:
The insulating structure is divided into compact blocks at junctions and thin lines along electrode paths. This segmentation creates a more aesthetically pleasing pattern that minimizes visual traces compared to continuous wide insulating blocks, while still providing necessary electrical insulation at the segmented junction points.
Solution Approach 2:
The insulating lines and blocks are designed with optical properties that match or blend with the surrounding transparent substrate and electrode materials. By optimizing the optical characteristics (transparency, refractive index matching) of the insulating materials, the visual contrast and trace phenomenon are minimized, improving overall appearance while maintaining electrical insulation 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 solution significantly improves light transmittance and prevents visual traces, maintaining the touch panel's functionality while enhancing its visual appearance by using narrow insulating lines and blocks, thus addressing the limitations of conventional designs.
Implementation Method 1
first and second electrode lines made of light-transmissive materials like metal nanowires or transparent conductive oxides, and conductive connecting portions
Implementation Method 2
insulating blocks are disposed at junctions between the first conductive connecting portions and the second conductive connecting portions, respectively
Data Source
AI summary
A touch electrode device includes first electrode lines and second electrode lines formed on a transparent substrate. An insulating block is disposed at a junction between a first conductive connecting portion of the first electrode line and a second conductive connecting portion of the second electrode line. At least one insulating line is extended from the insulating block and disposed along the first electrode line.