Touchscreen Insulation Part for Uniform Electrode Formation
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Solution Overview
Problem
Existing single-sided single-sheet touchscreens face issues with forming a uniform transparent electrode due to differences in surface energy between the metal mesh substrate and the insulating layer, leading to non-uniform line width and thickness, which affects transmittance, haze, and electrical conductivity.
Innovation Solution
A single-sided single-sheet touchscreen design featuring a substrate with a first conductive pattern in the transverse direction, a second conductive pattern in the longitudinal direction, and a transparent insulation part with a blank space that electrically insulates the transparent electrode, allowing for uniform pattern formation and maintaining constant transmittance and conductivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional insulating layer is used to separate metal mesh patterns, then electrical insulation is achieved, but the transparent electrode pattern becomes non-uniform in line width and thickness due to surface energy differences
Solution Approach 1:
The insulating layer is designed with different local properties: a first insulating region with higher surface energy contact angle and a second insulating region with lower surface energy contact angle. This local differentiation allows the transparent electrode material to form uniform patterns while maintaining electrical insulation between the x-axis and y-axis metal mesh patterns.
Solution Approach 2:
The patent changes the surface energy parameters (contact angles) of different regions of the insulating layer to control the deposition behavior of the transparent electrode material. By adjusting these parameters, uniform line width and thickness are achieved despite the underlying metal mesh substrate's surface energy differences.
2Reliability
If the transparent electrode is formed on both metal mesh substrate and insulating layer, then electrical connection is achieved, but non-uniform spreading occurs due to different surface energies
Solution Approach 1:
The insulating layer is designed with different local properties: a first insulating region with higher surface energy contact angle and a second insulating region with lower surface energy contact angle. This local differentiation allows the transparent electrode material to form uniform patterns while maintaining electrical insulation between the x-axis and y-axis metal mesh patterns.
Solution Approach 2:
The patent changes the surface energy parameters (contact angles) of different regions of the insulating layer to control the deposition behavior of the transparent electrode material. By adjusting these parameters, uniform line width and thickness are achieved despite the underlying metal mesh substrate's surface energy differences.
Data Source
AI summary
Disclosed is a single-side single-sheet touchscreen, including a substrate; a first conductive pattern, formed in a transverse direction (x-axis) on a surface of the substrate and including at least two pattern columns, each having two or more conductive pattern regions that are electrically connected to each other; a second conductive pattern, formed on the surface of the substrate on which the first conductive pattern is formed and including two or more conductive pattern regions that are not electrically connected to the first conductive pattern and are not electrically connected to each other; a transparent electrode for electrically connecting the conductive pattern regions of the second conductive pattern in a longitudinal direction (y-axis); and a transparent insulation part, disposed between the transparent electrode and the first conductive pattern to electrically insulate the transparent electrode and the first conductive pattern from each other, wherein the transparent insulation part has a blank space at a portion that comes into contact with the second conductive pattern. A method of manufacturing the same is also provided.