Shield Can Opening Structure for EMI Shielding and Heat Dissipation
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Solution Overview
Problem
Electronic devices face issues with heat buildup and electromagnetic interference due to high-power electric elements, leading to performance degradation and malfunction, as conventional shielding methods trap heat and fail to dissipate it effectively.
Innovation Solution
An electronic device design incorporating a shield can with openings, a shielding member, a metal plate, and a heat conductive member to efficiently discharge heat and shield electromagnetic waves, using a compressible shielding film and insulation layers to manage thermal transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a metal shield can is used to shield electromagnetic waves, then electromagnetic wave shielding is improved, but heat dissipation deteriorates
Solution Approach 1:
The shield can is divided into multiple sections with openings at different locations. The shield can includes a first opening at the bottom end and a second opening at the side surface, allowing heat to escape from multiple directions while maintaining electromagnetic shielding in other areas.
Solution Approach 2:
Different portions of the shield can have different properties: the bottom end has a first opening for heat dissipation, the side surface has a second opening for additional heat escape, and these openings are selectively positioned to balance shielding effectiveness with thermal management needs.
2Temperature
If the shield can is made with openings for heat dissipation, then heat dissipation is improved, but electromagnetic wave shielding deteriorates
Solution Approach 1:
A shielding member is introduced as an intermediary component that fills the openings in the shield can. This shielding member has electromagnetic wave shielding properties while allowing heat to pass through, thus mediating between the conflicting requirements of electromagnetic shielding and heat dissipation.
Solution Approach 2:
The shielding member is made of a composite material or structure that combines electromagnetic shielding capability with thermal conductivity. This allows the opening to simultaneously achieve heat dissipation function while maintaining electromagnetic wave blocking performance.
3Object-affected harmful factors
If a shielding member is added to cover the opening, then electromagnetic wave shielding is improved, but device complexity increases
Solution Approach 1:
The shielding member is integrated with the heat dissipation opening structure, combining the functions of electromagnetic shielding and heat dissipation management into a single component that covers the opening while maintaining both functions.
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 design effectively dissipates heat and shields electromagnetic interference, maintaining performance and preventing malfunctions by ensuring heat is not trapped within the device.
Implementation Method 1
a heat conductive member mounted in the opening and interposed between the electric element and the metal plate, and in contact with the electric element and the metal plate
Implementation Method 2
To shield the electromagnetic waves of the electric elements, one approach is to dispose a metal shield can surrounding the electric parts
Data Source
AI summary
Disclosed is an electronic device including a shielding member. The electronic device includes a substrate having an electric element mounted thereon; a shield can mounted on the electric element and including an opening formed at a part facing the electric element; a shielding member mounted around a part in which the opening is formed on an outer surface of the shield can, and electrically connected to the shield can; a metal plate mounted on the shielding member, with the opening covered, and electrically connected to the shielding member; and a heat conductive member mounted in the opening and interposed between the electric element and the metal plate, and in contact with the electric element and the metal plate.