Conductive Line Structure with Inclined Frame Wires for Sensing Devices
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Solution Overview
Problem
The challenge in manufacturing large-size sensing devices lies in achieving uniformity and efficiency in the production of the sensing electrode layer, particularly in improving the structure and manufacturing process to prevent defects such as residual conductive material and short circuits.
Innovation Solution
A conductive line structure is developed with a substrate featuring a straight borderline separating active and frame wire areas, where conductive lines in the frame wire area are inclined relative to the borderline, allowing for various electrical connections and printing methods like gravure printing to reduce residual material and enhance printing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional printing methods are used for large-size sensing devices, then production efficiency is maintained, but uniformity of the sensing electrode layer deteriorates and defects such as residual conductive material and short circuits occur
Solution Approach 1:
The conductive lines in the frame wire area are designed to be inclined relative to the borderline, creating an asymmetric pattern that differs from the active area. This asymmetric design allows the printing process to better control material deposition, reducing residual conductive material and improving uniformity while maintaining production efficiency through a streamlined single-step printing approach.
2Area of stationary object
If the sensing device size is increased, then the device meets large-size requirements, but uniformity in production of the sensing electrode layer deteriorates
Solution Approach 1:
The sensing device is divided into distinct areas (active area and frame wire area) separated by a borderline, with each area having specific conductive line configurations. This segmentation allows optimized printing parameters for different regions, ensuring uniformity across the entire large-size device while maintaining production efficiency.
3Ease of manufacture
If conductive lines are arranged parallel to the borderline, then manufacturing is simplified, but residual conductive material accumulates and short circuits occur
Solution Approach 1:
The conductive lines in the frame wire area are arranged at an inclination angle relative to the borderline rather than parallel to it. This asymmetric arrangement prevents the accumulation of residual conductive material that would occur with parallel arrangement, eliminating short circuit defects while maintaining ease of manufacture through a systematic design approach.
Data Source
AI summary
In one embodiment, a conductive line structure includes a substrate and a plurality of conductive lines thereon. The substrate has a first area and a second area, and the two areas are separated by at least one borderline. The plurality of conductive lines are disposed at the first area and the second area of the substrate, respectively. The at least one borderline may be a straight line, and the conductive lines disposed at the second area are inclined relative to the at least one borderline. A sensing device using the conductive line structure is also provided.