Shielded Module Structure With Trench-Based EMI and Magnetic Isolation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current module designs for communication devices fail to provide both effective electromagnetic and magnetic shielding as the shielding members either function as electromagnetic shields or magnetic shields, but not both simultaneously, leading to inadequate protection as component density increases.
Innovation Solution
A module design incorporating a substrate with electronic components, a sealing resin, a ground electrode, a conductive layer, and a magnetic member, where the conductive layer acts as an electromagnetic shield and the magnetic member serves as a magnetic shield, with a connecting conductor and magnetic wall member filling trenches to ensure both types of shielding are achieved.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single shielding member is used, then the structure is simple, but it cannot provide both electromagnetic and magnetic shielding functions
Solution Approach 1:
The patent combines the electromagnetic shielding function (conductive layer) and magnetic shielding function (magnetic member) into a single integrated shielding structure. The conductive layer and magnetic member are arranged in specific spatial relationships (one above the other, or side by side) to simultaneously provide both shielding functions without requiring separate independent structures.
Solution Approach 2:
The shielding structure is designed to perform multiple functions: the conductive layer provides electromagnetic wave shielding while the magnetic member provides magnetic field shielding. This multi-functional design allows a single shielding system to address both electromagnetic and magnetic interference issues that arise from high-density component mounting.
2Volume of moving object
If high-density component mounting is implemented, then size reduction is achieved, but electromagnetic and magnetic interference increases
Solution Approach 1:
The patent applies different shielding materials and structures in different spatial locations within the module. The conductive layer is positioned in certain areas while the magnetic member is positioned in other areas, creating localized shielding zones that address interference problems specific to high-density component arrangements without compromising the compact size.
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 design effectively satisfies both electromagnetic and magnetic shielding requirements, reducing the risk of damage during trench formation and optimizing space for component mounting while providing reliable shielding along desired paths.
Implementation Method 1
a conductive layer covering the sealing resin... functioning as the electromagnetic shield
Implementation Method 2
a magnetic member including a magnetic plate member arranged so as to cover the sealing resin and a magnetic wall member arranged in a wall shape in the trench... functioning as the magnetic shield
Data Source
AI summary
A module is provided with a substrate including a principal surface, a plurality of electronic components arranged on the principal surface, a sealing resin covering the principal surface and the plurality of electronic components and including a trench between any of the plurality of electronic components, a ground electrode arranged on the principal surface, a conductive layer covering the sealing resin, and a magnetic member. The conductive layer is electrically connected to the ground electrode by a connecting conductor arranged so as to penetrate the sealing resin. The magnetic member includes a magnetic plate member arranged so as to cover the sealing resin and a magnetic wall member arranged in a wall shape in the trench. The connecting conductor and the magnetic wall member both fill the trench in a state of being formed in the trench.