Anisotropic Thermal Channels for Junction Heat Isolation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Electronic devices face overheating issues due to high junction and surface temperatures, which affect performance, necessitating improved heat dissipation mechanisms.
Innovation Solution
Incorporation of a thermally conductive layer with segmented anisotropic conductive channels that provide high thermal conductivity in one direction and low conductivity in another, enabling localized directional heat transfer and thermal decoupling between components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional thermal management is used, then heat dissipation is provided, but junction and surface temperatures remain high affecting performance
Solution Approach 1:
The thermally conductive layer is divided into multiple segmented channels rather than a continuous structure. Each channel is separated by thermally insulating material, creating discrete heat transfer paths that prevent lateral heat spread to adjacent components while maintaining efficient heat removal from heat-generating devices.
Solution Approach 2:
The thermal conductivity is made anisotropic and spatially varying - high thermal conductivity along the channel length for efficient heat removal, and low thermal conductivity between channels for thermal isolation. This local differentiation of thermal properties enables simultaneous heat dissipation and thermal decoupling.
2Temperature
If thermally conductive material is used to dissipate heat, then heat transfer is improved, but heat spreads to adjacent components causing thermal interference
Solution Approach 1:
The continuous thermally conductive material is segmented into discrete channels separated by thermally insulating material. This segmentation confines heat transfer to specific pathways, allowing efficient heat removal from each component while preventing thermal coupling between adjacent components.
Solution Approach 2:
Thermally insulating material is introduced as an intermediary between adjacent thermally conductive channels. This intermediary layer blocks lateral heat transfer between channels while allowing each channel to maintain its own heat dissipation pathway, thus eliminating thermal interference between components.
3Loss of energy
If continuous thermally conductive layer is used, then heat transfer is maximized, but thermal coupling between components increases
Solution Approach 1:
The thermally conductive layer is segmented into discrete channels separated by thermally insulating material. This segmentation maintains high heat transfer efficiency within each channel while eliminating thermal coupling between adjacent channels, as each channel operates as an independent heat transfer pathway.
Solution Approach 2:
The thermal conductivity is differentiated locally - high along the channel direction for efficient heat transfer, and low between channels for thermal isolation. This local quality variation enables simultaneous optimization of heat transfer efficiency and thermal decoupling.
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
Reduces integrated device junction and surface temperatures, enhancing thermal management and performance by minimizing heat transfer between adjacent components.
Implementation Method 1
the thermally conductive layer includes a plurality of segmented thermally anisotropic conductive channels
Implementation Method 2
Each segmented thermally anisotropic conductive channel from the plurality of segmented thermally anisotropic conductive channels is configured to provide heat transfer primarily in the first direction
Implementation Method 3
The thermally conductive layer may include a thermally insulating material
Data Source
AI summary
A device comprising a region that includes a component configured to generate heat and a thermally conductive layer coupled to the region, where the thermally conductive layer includes a plurality of segmented thermally anisotropic conductive channels. Each segmented thermally anisotropic conductive channel from the plurality of segmented thermally anisotropic conductive channels is aligned in a first direction. Each segmented thermally anisotropic conductive channel from the plurality of segmented thermally anisotropic conductive channels is configured to provide heat transfer capabilities in the first direction. The thermally conductive layer is configured to (i) reduce the junction temperature of the component and/or (ii) reduce a surface temperature of the device.