Heat Spreader Antenna Region Segmentation
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Solution Overview
Problem
In electronic devices, increasing heat density due to miniaturization and integration challenges the effective dissipation of heat without impacting antenna performance, as traditional heat spreaders often overlap with antennas, affecting communication characteristics.
Innovation Solution
A plate-shaped heat spreader with a stacked metal layer structure and a working fluid in an enclosed space, where the antenna is positioned in a nonconductive area, allowing the heat spreader to extend and increase its area without misaligning the metal layers, thus improving heat dissipation while maintaining antenna characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the area of the plate-shaped heat spreader is increased to improve heat dissipation, then the heat dissipation effect is improved, but the antenna characteristics greatly vary due to interference with the antenna disposed in the same area
Solution Approach 1:
The heat spreader is divided into two distinct regions: an operational region that overlaps with the antenna and a quasi-operational region that extends to increase heat dissipation area. This segmentation allows different parts of the heat spreader to serve different functions - the operational region minimizes antenna interference while the quasi-operational region provides enhanced heat dissipation capacity.
Solution Approach 2:
Different regions of the heat spreader are assigned different functional qualities. The operational region is designed with properties optimized for minimizing impact on antenna characteristics, while the quasi-operational region is designed to maximize heat dissipation. This local differentiation resolves the contradiction by allowing each region to optimize for its specific purpose.
2Area of stationary object
If the plate-shaped heat spreader is disposed in the relatively-small-conductor-density area to increase heat spreader area, then the heat dissipation effect is improved, but the antenna characteristics greatly vary
Solution Approach 1:
The heat spreader structure is segmented into operational and quasi-operational regions, allowing the quasi-operational region to extend into nonconductive areas for increased heat dissipation while the operational region maintains proper spacing from the antenna to preserve antenna characteristics.
Solution Approach 2:
The heat spreader extends in multiple spatial dimensions, with the operational region positioned to avoid antenna interference and the quasi-operational region extending into available nonconductive spaces. This multi-dimensional arrangement allows maximum heat dissipation area without compromising antenna performance.
3Productivity
If electronic devices are miniaturized and integrated to increase element density, then device performance is improved, but heat dissipation becomes more difficult due to increased heat density
Solution Approach 1:
The heat spreader utilizes available three-dimensional space within the device housing, extending the heat dissipation area beyond the immediate vicinity of heat-generating components. By exploiting spatial dimensions and nonconductive areas, the system achieves enhanced heat dissipation capacity without increasing device footprint or compromising miniaturization benefits.
Solution Approach 2:
The heat spreader structure serves multiple functions: it provides thermal management for heat-generating components, extends into nonconductive areas for additional heat dissipation, and maintains proper spatial relationships with antenna elements. This multi-functionality allows the system to address heat dissipation challenges in miniaturized devices without sacrificing device performance.
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 heat dissipation efficiency while ensuring the integrity and performance of the antenna, even in high-density electronic devices, by utilizing a nonconductive area for the quasi-operational region of the heat spreader.
Implementation Method 1
The heat that is generated by the heating component spreads over the entire plate-shaped heat spreader and is dissipated from the entire heat spreader
Implementation Method 2
a working fluid in an enclosed space interposed between the first metal layer and the second metal layer
Data Source
AI summary
An electronic device includes an antenna, and a plate-shaped heat spreader including first and second metal layers that are stacked, a working fluid in an enclosed space interposed between the first and second metal layers, and a joint along which outer peripheral portions around the enclosed space are joined. The heat spreader includes an operational region in which the enclosed space is located and a quasi-operational region other than the enclosed space. The antenna is provided in the quasi-operational region in a plan view of the heat spreader.