Touch panels and methods of manufacturing touch panels
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current touch panels face challenges in achieving improved reliability, especially when subjected to bending, due to limitations in durability and electrical resistance.
Innovation Solution
A touch panel manufacturing method involving the formation of sensing cells, insulating interlayers, and transparent conductive patterns on a substrate, where metal nanowires are used to create a network with high ductility and low electrical resistance, and the use of transparent resin interlayers to protect and connect these components, ensuring reliability and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional touch panel structures are used, then manufacturing is simpler, but reliability and durability under bending conditions deteriorate
Solution Approach 1:
The touch panel is divided into a sensing region with sensing cells and a non-sensing region without sensing cells, allowing different structural configurations in different areas to improve overall reliability under bending
Solution Approach 2:
The patent employs composite material structures including transparent conductive patterns, insulating interlayers, and substrate combinations that provide both mechanical durability and electrical functionality, enhancing reliability under bending conditions
2Reliability
If transparent conductive patterns are added to improve electrical characteristics, then electrical resistance decreases, but device complexity increases
Solution Approach 1:
The transparent conductive patterns serve multiple functions: they provide electrical conductivity for sensing, maintain optical transparency for display visibility, and contribute to structural integrity, thereby reducing the need for separate components
Solution Approach 2:
The patent combines the transparent conductive pattern formation with the connection pattern formation in the same manufacturing step, reducing process complexity while achieving both electrical connectivity and low resistance
3Reliability
If insulating interlayers are removed to form contact holes, then electrical connection is improved, but manufacturing precision requirements increase
Solution Approach 1:
The insulating interlayer is formed with pre-defined openings or the contact hole positions are predetermined in the design, allowing for easier and more precise formation during manufacturing without requiring high-precision post-forming adjustments
Data Source
AI summary
A touch panel includes: a substrate having a first region and a second region. A plurality of sensing cells are disposed in the first region and a pad portion is disposed in the second region. An insulating interlayer is disposed on the plurality of sensing cells, a connection pattern is disposed on the insulating interlayer, with the connection pattern being electrically connected to adjacent sensing cells through contact holes. A transparent conductive pattern is disposed in the second region and on the insulating interlayer, with the transparent conductive pattern being electrically connected to the plurality of sensing cells and the pad portion.