Zigzag Electrode Holes Reduce Touch Panel Pattern Visibility
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Solution Overview
Problem
The existing single electrode layer touch panels suffer from pattern visibility issues due to the presence of numerous straight transmitting and receiving electrodes and wires, which become visible when viewed from certain angles, compromising the aesthetic quality.
Innovation Solution
The design incorporates a substrate with transmission lines and electrodes featuring a zigzag pattern of holes arranged in rows and columns, forming convex and concave parts that extend the zigzag pattern, along with virtual electrodes that match the zigzag shape, to minimize visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If straight wires and electrodes are used for signal transmission, then the manufacturing process is simple, but pattern visibility occurs when viewed from certain angles
Solution Approach 1:
The patent applies curvature by transforming straight wires and electrodes into curved or zigzag patterns. The transmission lines and electrodes are designed with curved paths instead of straight lines, which prevents the formation of visible straight stripes when viewed from certain angles, thereby eliminating pattern visibility while maintaining manufacturing feasibility through standard photolithography processes
2Adaptability or versatility
If numerous transmitting electrodes and receiving electrodes are disposed nearby, then the touch panel functionality is achieved, but pattern visibility occurs due to the dense arrangement
Solution Approach 1:
The patent applies curvature to the electrode arrangements by designing transmitting electrodes and receiving electrodes with curved paths instead of straight lines. This curved arrangement maintains the necessary electrical connectivity and touch sensitivity while preventing the formation of visible straight patterns, thus achieving functionality without compromising aesthetic quality
Solution Approach 2:
The patent employs asymmetric electrode designs where transmitting and receiving electrodes have different geometric configurations. The electrodes are arranged in non-uniform patterns with varying curvatures and orientations, which breaks the symmetry that would otherwise create visible patterns, while still maintaining the required touch sensing functionality
Data Source
AI summary
The present invention provides a single electrode layer of a touch panel, which comprises a plurality of electrodes. The electrodes comprise a plurality of holes arranged in a plurality of rows in a first direction and adjacent to one another. The holes are also arranged in a plurality of columns in a second direction and adjacent to one another. The columns of the holes are arranged in a zigzag pattern along the first direction. The rows of the holes are arranged in a zigzag pattern along the second direction. The electrodes are arranged in a zigzag pattern along the first direction corresponding to the holes and forming a first side and a second side opposing to the first side, which are zigzag shape. The first and second sides form a plurality of convex parts and a plurality of concave parts. The geometric shapes of the convex parts and the concave parts extend the zigzag shapes of the holes along the second direction.