No-Contact Via Structure for RF Filter Heat Dissipation
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Solution Overview
Problem
As RF filter devices shrink in size, they face challenges in dissipating heat effectively, which can lead to performance changes and potential failure due to overheating, as traditional via structures are limited in their ability to efficiently remove heat while maintaining electrical connectivity.
Innovation Solution
The introduction of a 'no-contact via' structure, which includes an electrically insulating material like silicon dioxide between the conductive traces, allowing for thermal conduction without electrical conduction, providing a thermally conductive path for heat removal without providing an electrical path, thus enabling more flexibility in locating heat dissipation points.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If traditional via structures are used for heat dissipation, then electrical connectivity is maintained, but heat dissipation efficiency is limited
Solution Approach 1:
The patent segments the via structure into two distinct components: an upper conductive portion for electrical connectivity and a lower insulating portion for heat dissipation. This segmentation allows each portion to perform its specialized function independently, resolving the contradiction between maintaining electrical connectivity and improving heat dissipation efficiency
Solution Approach 2:
The patent introduces an insulating material as an intermediary substance within the via structure. This intermediary allows thermal energy to pass through while blocking electrical current, enabling heat dissipation without compromising electrical connectivity. The insulating material acts as a mediator that reconciles the conflicting requirements of electrical and thermal management
2Volume of moving object
If device size is reduced, then integration density increases, but heat dissipation capability deteriorates
Solution Approach 1:
The patent changes the material parameters within the via structure by introducing insulating materials with high thermal conductivity properties. This parameter change allows the via to maintain its small physical dimensions while improving heat dissipation capability through optimized material selection and structural configuration
3Temperature
If heat dissipation paths are added, then thermal management improves, but device complexity increases
Solution Approach 1:
The patent makes the via structure multi-functional by enabling it to simultaneously provide electrical connectivity through the upper conductive portion and heat dissipation through the lower insulating portion. This universality eliminates the need for separate heat dissipation structures, improving thermal management without significantly increasing device complexity
Solution Approach 2:
The patent merges the electrical connection function and heat dissipation function into a single integrated via structure. By combining these two functions that were previously requiring separate structures, the patent improves thermal management while minimizing 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
The no-contact via structure effectively reduces the maximum temperature of RF filter devices during operation, allowing for increased output power without exceeding temperature specifications, thereby enhancing the thermal management of RF filter devices.
Implementation Method 1
allowing for thermal conduction without electrical conduction, providing a thermally conductive path for heat removal
Data Source
AI summary
An electronic device comprises one or more heat generating circuit elements and a no-contact via thermally coupled to the one or more heat generating circuit elements to increase dissipation of heat from the electronic device.