PCB Shielding Structure for Component Mounting Space
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Solution Overview
Problem
As electronic devices are miniaturized, the mounting space for components becomes insufficient due to the need for shielding against electromagnetic waves, which can interfere with each other's operation.
Innovation Solution
An electronic device with a shielding structure that includes a conductive layer, conductive pad, and shielding member on a printed circuit board, where the conductive member surrounds the periphery of the electronic component and the shielding member isolates the component from external electromagnetic interference while being electrically connected to the conductive layer, allowing for efficient shielding and maintaining mounting space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a shielding structure is added to block electromagnetic waves, then electromagnetic interference between components is reduced, but the mounting space in the electronic device becomes insufficient
Solution Approach 1:
The shielding structure is segmented into multiple functional layers: a conductive member layer that provides electromagnetic shielding, a dielectric member layer that provides electrical insulation and mechanical support, and a reflective member layer that reflects electromagnetic waves. This segmentation allows each layer to perform its specific function efficiently while optimizing the overall space utilization.
Solution Approach 2:
The shielding structure is integrated within the existing electronic device architecture by nesting the conductive member, dielectric member, and reflective member in a layered configuration that fits within the device housing and component arrangements. The shielding structure is positioned between electromagnetic wave sources and sensitive components, effectively utilizing the available three-dimensional space without requiring additional external volume.
2Area of stationary object
If electronic components are disposed adjacent to each other to save space, then mounting density increases, but electromagnetic waves from some components affect the operation of other components
Solution Approach 1:
The shielding structure acts as an intermediary element positioned between electromagnetic wave sources (such as antennas or wireless communication modules) and sensitive electronic components. The conductive member blocks electromagnetic fields, the dielectric member provides electrical isolation, and the reflective member redirects electromagnetic waves, collectively preventing interference while allowing high-density component placement.
Solution Approach 2:
The shielding structure is selectively applied in specific regions where electromagnetic interference is most problematic, rather than providing uniform shielding throughout the entire device. The conductive member, dielectric member, and reflective member are positioned strategically around high-frequency components and sensitive circuits, optimizing interference protection while minimizing impact on mounting space and signal integrity in other areas.
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
The solution effectively shields electronic components from electromagnetic interference while securing sufficient mounting space for various components, enhancing user experience by preventing malfunctions and optimizing device design.
Implementation Method 1
a shielding member isolating the first region of the printed circuit board from the outside of the printed circuit board by covering the electric component and the conductive member
Data Source
AI summary
An electronic device according to an embodiment includes a printed circuit board including a conductive layer and a conductive pad connected to the conductive layer and exposed to an outside of the printed circuit board; an electric component disposed on a first region of the printed circuit board and the electric component electrically connected to the printed circuit board; a conductive member disposed on the conductive pad and the conductive member surrounding at least part of a periphery of the first region of the printed circuit board; and a shielding member isolating the first region of the printed circuit board from the outside of the printed circuit board by covering the electric component and the conductive member, the shielding member electrically connected to the conductive layer. In addition, various embodiments are possible.