Sensor Wiring Layout With Through-Holes for Curved Surface Reliability
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Solution Overview
Problem
Existing detection devices, such as strain sensors and force sensors, face issues with wiring breakage due to stress generated by deformation or coupling between deformable and non-deformable parts, particularly when attached to curved surfaces.
Innovation Solution
A detection device with a substrate having a detection region, coupling region, and wiring region, featuring through holes in the wiring region to relieve stress on coupling wires, and a configuration that allows the device to be attached to curved surfaces while minimizing stress on the wiring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If coupling wires are used to electrically connect detection elements to terminals in the wiring region, then electrical coupling is achieved, but stress concentration occurs leading to wiring breakage
Solution Approach 1:
The patent divides the wiring region into multiple segments by forming through-holes that partition the coupling wires into separate regions. This segmentation prevents stress from concentrating on individual wires and allows independent movement of each wire segment, thereby preventing wiring breakage while maintaining electrical coupling reliability
Solution Approach 2:
The patent introduces an insulating layer as an intermediary substance that fills the through-holes and surrounds the coupling wires. This insulating layer acts as a stress buffer and mediator, protecting the wires from direct stress concentration while maintaining their electrical function, thus improving wiring reliability without compromising strength
2Adaptability or versatility
If the device is attached to a curved surface, then adaptability is improved, but stress on coupling wires increases causing breakage
Solution Approach 1:
By segmenting the wiring region through through-holes, the patent enables each coupling wire to independently accommodate curvature-induced stress without affecting adjacent wires. This segmentation allows the device to be attached to curved surfaces while maintaining wiring reliability through distributed stress management
Solution Approach 2:
The patent applies local quality by creating regions of different mechanical properties within the wiring region. The through-holes create localized stress-relief zones that allow the wiring structure to adapt to curved surfaces, while the insulating material provides localized protection and support where needed
Data Source
AI summary
A detection device includes a substrate having a detection region, a coupling region, and a wiring region between the detection region and the coupling region, a plurality of detection elements disposed in the detection region of the substrate, a plurality of terminals disposed in the coupling region of the substrate and electrically coupled to the detection elements, a plurality of coupling wires adjacently disposed with a gap interposed therebetween in the wiring region of the substrate and electrically coupling the detection elements to the terminals, an insulating layer provided to the wiring region of the substrate and covering the coupling wires, and a plurality of through holes formed in the wiring region of the substrate and passing through the substrate and the insulating layer in a thickness direction between the coupling wires.