Integrated Circuit Package Heatsink Assembly for Off-Axis Hotspot Cooling

The patent implements localized cooling structures (heat sinks, thermal vias, cooling channels) positioned specifically at hotspot locations within the integrated circuit package, rather than uniform cooling across the entire device. This allows concentrated thermal management at critical areas where heat generation exceeds dissipation capacity, directly addressing the hotspot temperature issue while improving overall device reliability.

The patent introduces thermally conductive intermediary materials and structures (such as thermal interface materials, heat spreaders, and thermal vias filled with conductive compounds) that facilitate heat transfer from hotspot regions to cooling structures. These intermediaries bridge the thermal gap between the heat-generating components and the cooling system, enabling effective heat removal and preventing reliability degradation.

The patent employs three-dimensional thermal management structures, including vertical thermal vias, stacked heat sink configurations, and multi-layer cooling channels, that conduct heat away from hotspots in multiple spatial dimensions. This dimensional approach allows effective heat dissipation without requiring direct planar alignment between heatsinks and hotspots, thereby maintaining circuit design flexibility while achieving superior thermal management.

The patent divides the cooling system into multiple segmented components (individual heat sinks, thermal vias, cooling channels) that can be independently positioned and optimized. This segmentation allows the cooling structures to be strategically placed at various hotspot locations without requiring a single large aligned heatsink, preserving design flexibility while effectively managing heat from multiple localized sources.

The patent utilizes composite thermal management structures combining materials with different thermal conductivity properties. This includes using high-thermal-conductivity materials (such as diamond, copper, or aluminum nitride) in specific regions where heat dissipation is critical, while maintaining the original semiconductor material elsewhere. This composite approach enhances heat spreading capacity in densely packed circuits without compromising performance stability.

The patent integrates multiple functional elements into unified structures that simultaneously provide electrical, mechanical, and thermal functions. For example, thermal vias serve both as electrical interconnects and heat conduction paths, while heat sink structures provide both mechanical support and thermal management. This multi-functionality improves heat dissipation capacity in densely packed circuits without adding separate components that could compromise performance stability.