Ion-Implanted Thermal Barrier for Microelectronics Heat Isolation
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Solution Overview
Problem
As microelectronic components shrink, heat fluxes increase, leading to high temperatures that can impair device performance and limit the proximity of heat-generating devices to other components on a microelectronic chip, necessitating effective thermal dissipation without affecting nearby devices.
Innovation Solution
An ion-implanted thermal barrier is created between hot and cold devices on a substrate using ion implantation, which introduces defects to reduce thermal conductivity and define a controlled thermal dissipation path, allowing for better thermal isolation and higher device density.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If microelectronic components are shrunk to increase device density, then device density is improved, but heat flux increases and thermal management becomes more difficult
Solution Approach 1:
The patent applies segmentation by dividing the thermal management function into distinct regions: a first region with high thermal conductivity for heat dissipation and a second region with low thermal conductivity for thermal isolation. This segmentation allows different areas to perform specialized thermal functions, enabling higher device density while managing heat flux effectively.
Solution Approach 2:
The patent implements local quality by creating regions with different thermal conductivity properties within the same substrate. The first region is engineered to have high thermal conductivity to conduct heat away from hot spots, while the second region has low thermal conductivity to thermally isolate sensitive components. This local differentiation of thermal properties allows simultaneous optimization of heat dissipation and thermal isolation in different locations.
2Quantity of substance
If heat-generating devices are placed in close proximity to other components, then device density is improved, but performance of nearby devices is degraded due to thermal interference
Solution Approach 1:
The substrate is segmented into a first region extending in a first direction for heat dissipation and a second region extending in a second direction for thermal isolation. This spatial segmentation allows hot devices to be placed close to other components while the second region acts as a thermal barrier to prevent performance degradation of nearby devices.
Solution Approach 2:
The second region with low thermal conductivity acts as an intermediary thermal barrier between heat-generating devices and sensitive components. This intermediary region blocks thermal interference while allowing the devices to remain in close proximity, thus maintaining high device density without compromising the reliability and performance of neighboring devices.
3Reliability
If thermal isolation is enhanced between devices, then device performance is improved, but device density is reduced due to larger spacing requirements
Solution Approach 1:
Instead of providing uniform thermal isolation across the entire substrate, the patent applies thermal isolation locally in the second region where it is needed to protect specific sensitive components. This localized approach provides sufficient thermal protection while minimizing the space consumed by isolation structures, thereby maintaining high device density.
Solution Approach 2:
The patent extends thermal management in multiple dimensions by having the first region extend in a first direction for heat dissipation and the second region extend in a second direction for thermal isolation. This multi-dimensional approach allows efficient thermal management with minimal footprint, enabling both good thermal isolation and high device density.
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 ion-implanted thermal barrier effectively isolates thermal environments, enabling improved performance and increased device density by managing heat dissipation without affecting neighboring components, and can be implemented using existing microelectronics tools and processes.
Implementation Method 1
an ion-implanted thermal barrier, comprising an ion-implanted region between a hot device and a cool device on a substrate
Implementation Method 2
The barrier can be used to define a thermal dissipation path that will allow for better thermal isolation between devices
Data Source
AI summary
Ion implantation can be used to define a thermal dissipation path that allows for better thermal isolation between devices in close proximity on a microelectronics chip, thus providing a means for higher device density combined with better performance.