Touch Panel Conductive Member Disconnection Alignment
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Solution Overview
Problem
Conductive touch panels with fine metal wire sensing electrodes face visibility issues due to overlapping disconnection portions in dummy electrodes, leading to reduced clarity when used in touch panels.
Innovation Solution
The conductive member comprises a first and second electrode layer with sensing and dummy electrodes formed by fine metal wire mesh cells, where the disconnection portions of the dummy electrodes are strategically positioned to avoid overlap, ensuring that the fine metal wire of one dummy electrode is not overlapped with the disconnection portion of another, thereby improving visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If dummy electrodes with disconnection portions are formed in the conductive member, then detection sensitivity is improved, but visibility is reduced due to conspicuous disconnection portions
Solution Approach 1:
The patent applies local quality by making the disconnection portions of dummy electrodes have different properties in different regions. Specifically, in regions where first and second dummy electrodes overlap, the disconnection portions are positioned to avoid overlapping each other, while in other regions they may be positioned differently. This localized differentiation reduces visual conspicuousness while maintaining detection sensitivity.
Solution Approach 2:
The patent employs asymmetry by creating non-uniform patterns in the dummy electrode disconnection portions. Rather than having all disconnection portions arranged symmetrically or uniformly, the positions are strategically varied - particularly avoiding overlap in specific regions where first and second dummy electrodes intersect - to reduce visual impact while preserving functional performance.
2Reliability
If fine metal wire mesh is used for sensing electrodes, then resistance value is reduced, but visibility is reduced due to visible metal wire intersections
Solution Approach 1:
The patent applies local quality by creating regions with different wire intersection characteristics. In regions where first and second sensing electrodes overlap, the mesh patterns are arranged to minimize visible intersections, while in other regions the mesh structure maintains its standard configuration for optimal electrical performance.
Solution Approach 2:
The patent addresses visibility by considering the third dimension of light transmission through the touch panel. By optimizing the spatial arrangement of mesh wires in overlapping regions, the patent reduces the visual impact of intersections while maintaining the electrical conductivity benefits of the fine metal wire structure.
Data Source
AI summary
A conductive member includes a first sensing electrode, a first dummy electrode, a second sensing electrode, and a second dummy electrode, each of which is constituted by a plurality of mesh cells formed with fine metal wires, the mesh cells of the first dummy electrode and the second dummy electrode have disconnection portions and, and in plan view, a fine metal wire of the second sensing electrode is disposed at the disconnection portion of the first dummy electrode, and a fine metal wire of the first sensing electrode is disposed at the disconnection portion of the second dummy electrode.