Self-Shielded Components Conformal EMI Shielding
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Solution Overview
Problem
Conventional EMI shielding methods for electronic devices require additional space due to the need for separate conductive shields, which can limit device size and complexity.
Innovation Solution
Self-shielded components are achieved by integrating a conformal shield layer with a ground layer on a substrate, forming a boundary that envelops circuitry and provides EMI shielding without the need for external shields, thereby reducing space requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conductive can shielding is constructed around components using separate frame and cover, then EMI shielding effectiveness is improved, but device space requirements increase and device size is limited
Solution Approach 1:
The patent merges the EMI shielding function with the component package structure itself. The conformal shield layer is integrated directly onto the component package substrate, eliminating the need for separate frame and cover structures. This integration maintains EMI shielding effectiveness while significantly reducing the space required, as the shielding is now part of the component rather than an external addition.
Solution Approach 2:
The patent employs a conformal shield layer that is a thin film structure deposited onto the component package substrate. This thin film approach provides effective EMI shielding without requiring the bulkier traditional conductive can structures. The conformal nature of the layer allows it to follow the substrate contours, optimizing shielding coverage while minimizing space occupation.
2Reliability
If separate frame and cover structures are used for EMI shielding, then shielding coverage is improved, but device complexity and manufacturing steps increase
Solution Approach 1:
The patent combines multiple functions into a single integrated structure. The component package substrate serves both as the mounting base for the component and as the carrier for the conformal EMI shield layer. This merger eliminates the need for separate frame and cover components, reducing device complexity and streamlining manufacturing processes.
Solution Approach 2:
The component package substrate is given multiple functions: it serves as the structural base for mounting the component, provides electrical connections through its ground layer, and acts as the substrate for the conformal EMI shield layer. This multi-functionality reduces the overall number of components needed and simplifies the device architecture.
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 approach effectively shields circuitry from EMI signals while minimizing space usage, allowing for more compact and efficient electronic device design.
Implementation Method 1
The conformal shield layer and the ground layer can form an electromagnetic interference (EMI) shield
Data Source
AI summary
This is directed to self-shielded components and methods for making the same. A self-shielded component can include an electromagnetic interference (EMI) shield that contains circuitry within a shielded space defined by the EMI shield. Self-shielding can be achieved by interfacing a conformal shield layer to a ground layer disposed on or within a substrate of the self-shielded component. The combination of the conformal shield layer and the around layer can form a boundary of the shielded space that envelops circuitry requiring shielding. This enables the self-shielded component to be mounted to a circuit board without requiring a shield can or other processing to impart EMI shielding. In addition, the self-shielded components include the benefits of EMI shielding while simultaneously decreasing space requirements.