Display Module Antenna Magnetic Sheet Eddy Current Prevention
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Solution Overview
Problem
In electronic devices, the packaging of multiple components in limited space often leads to interference, particularly between antennas and nearby metal parts, causing degradation in antenna performance and making it challenging to achieve both slim design and effective communication.
Innovation Solution
A display module configuration that includes a magnetic sheet under the antenna to prevent eddy currents and a composite sheet with various materials to provide multiple functions, such as heat dissipation and noise shielding, which helps maintain antenna performance and allows for a slim design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple electronic components are packaged within limited space, then device functionality is improved, but antenna performance deteriorates due to interference with metal parts
Solution Approach 1:
A magnetic sheet is introduced as an intermediary component between the antenna and metal parts. This magnetic sheet prevents eddy currents from forming on the metal surface by providing a magnetic path, thereby eliminating the harmful interaction between the antenna and metal while allowing both components to coexist in limited space
2Length of moving object
If antenna and metal parts are placed close together, then device thickness is reduced, but eddy currents are generated on metal parts causing performance degradation
Solution Approach 1:
The magnetic sheet serves as a mediator placed between the antenna and metal parts, allowing them to be positioned close together for thin device design while preventing eddy current generation through its magnetic properties that provide an alternative flux path
3Reliability
If magnetic sheet is added to prevent eddy currents, then antenna performance is improved, but device complexity increases
Solution Approach 1:
The magnetic sheet is designed to perform multiple functions simultaneously: preventing eddy currents, providing electromagnetic shielding, and serving as a structural layer in the display module. This multi-functionality reduces the need for additional separate components, thereby limiting the increase in device complexity
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 antenna performance by reducing interference with nearby metal parts, improving communication efficiency, and enabling a slim design for electronic devices.
Implementation Method 1
The magnetic sheet may serve to prevent degradation of electronic device performance by preventing the generation of eddy currents on a nearby metal part of the device
Data Source
AI summary
Disclosed is a display module that includes at least one antenna, for use in an electronic device. The display module includes a display panel, and a magnetic sheet disposed under the display panel. The at least one antenna is disposed above the magnetic sheet. The magnetic sheet may serve to prevent degradation of electronic device performance by preventing the generation of eddy currents on a nearby metal part of the device.