Shielded Electronic Module With Crossed Magnetic Flux Electrodes
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Solution Overview
Problem
Existing module designs fail to effectively shield components from electromagnetic interference between substrates spaced apart and facing each other, as they do not consider the impact of magnetic flux on signal lines and components.
Innovation Solution
The module incorporates a first and second substrate with electrical connection, where an inductor is mounted on one substrate and at least one shield electrode is positioned to cross the magnetic flux path, enhancing shielding performance by being grounded and strategically placed to suppress interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If two substrates are disposed in a state of being spaced apart from each other and facing each other, then component mounting flexibility is improved, but electromagnetic interference between components increases
Solution Approach 1:
A shield electrode is introduced as an intermediary element between the first substrate and the inductor. This shield electrode acts as a mediator that blocks electromagnetic waves generated by the inductor from interfering with other components mounted on the substrate, thereby resolving the contradiction between maintaining spaced-apart substrate configuration and preventing electromagnetic interference.
Solution Approach 2:
The harmful electromagnetic field is extracted and contained within a dedicated shield electrode structure. By separating the electromagnetic shielding function from the general substrate structure, the patent effectively isolates the interference problem while preserving the beneficial spaced-apart substrate configuration for component mounting.
2Object-affected harmful factors
If shield electrode is added to enhance shielding performance, then electromagnetic interference is reduced, but device complexity increases
Solution Approach 1:
The shield electrode is merged with the existing substrate structure through electrical connection, combining the shielding function with the structural framework. This integration approach provides effective electromagnetic interference protection while minimizing the increase in device complexity by utilizing existing structural elements.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration enhances shielding performance, reduces module area and height, and increases component mounting density while effectively mitigating electromagnetic interference.
Implementation Method 1
at least one shield electrode is fixed to the first substrate with the shield electrode being positioned so as to cross a path of a magnetic flux emitted by the inductor
Implementation Method 2
the shield electrode being positioned so as to cross a path of a magnetic flux emitted by the inductor, and thus, the shield performance can be enhanced
Data Source
AI summary
A module includes: a first substrate having a first surface and a second surface facing opposite sides; and a second substrate having a third surface and a fourth surface facing opposite sides, wherein the second substrate is disposed to overlap the first substrate with the third surface facing the first substrate, while being spaced apart from the first substrate on the second surface side of the first substrate, the first substrate and the second substrate are electrically connected, an inductor is mounted on the third surface, and at least one shield electrode is fixed to the first substrate with the shield electrode being positioned so as to cross a path of a magnetic flux, and each of the at least one shield electrode is grounded.