Electronic Component Mounting Board Metal Layer Structural Integrity
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Solution Overview
Problem
Thinner electronic component mounting boards experience stress concentration and reduced strength due to thinner insulating layers, leading to potential cracks or breaks under handling or external stress.
Innovation Solution
Incorporating a metal layer with a first conductor layer and a second conductor layer separated by a space, positioned between insulating layers, which extends from one end of the metal layer to the other, overlapping imaginary lines parallel and perpendicular to the substrate, to enhance structural integrity and reduce noise generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the electronic component mounting board is made thinner with thinner insulating layers, then the board thickness is reduced, but the strength and resistance to stress concentration deteriorate
Solution Approach 1:
The patent introduces a metal layer composed of multiple conductor layers (first conductor layer and second conductor layer) separated by insulating layers, creating a composite structure. This metal layer is positioned between the insulating layers and extends across the board, providing enhanced mechanical strength and stress distribution while maintaining the thin overall board profile. The composite structure combines the advantages of thin insulating layers with the strength-providing metal reinforcement.
2Length of stationary object
If the electronic component mounting board is made thinner with thinner insulating layers, then the board thickness is reduced, but the resistance to stress concentration and external vibrations deteriorates
Solution Approach 1:
The metal layer structure with multiple conductor layers separated by insulating layers creates a composite material system that distributes stress more effectively throughout the board. This composite structure prevents stress concentration at single points and enhances resistance to external vibrations while maintaining the reduced board thickness.
3Strength
If a metal layer is added between insulating layers to enhance strength, then the strength increases, but the device complexity increases
Solution Approach 1:
The metal layer serves multiple functions simultaneously: it provides mechanical strength enhancement, acts as electrical conductors for signal transmission, and contributes to the overall structural integrity of the mounting board. This multi-functionality reduces the need for separate structural support elements, thereby limiting the increase in device complexity.
Solution Approach 2:
The patent merges the structural support function with the electrical conduction function by integrating the metal layer that serves both as a strength-enhancing element and as electrical conductors. This combination eliminates the need for separate structural frameworks, maintaining relatively simple device architecture while achieving enhanced strength.
Data Source
AI summary
An electronic component mounting board includes a substrate and a metal layer. The substrate includes a first layer, and a second layer located at a lower surface of the first layer. The metal layer is located between the first layer and the second layer, and includes a first conductor layer, and a second conductor layer located with a space from the first conductor layer. The space extends from a first end of the metal layer to a second end of the metal layer different from the first end as viewed from above. The metal layer overlaps a first imaginary line that is parallel to one side of the substrate and passes through a center of the substrate, and a second imaginary line that is perpendicular to the first imaginary line and passes through the center of the substrate as viewed from above.