IC Package Thermal Contact Structure for Hotspot Heat Dissipation

The patent applies local quality by creating a thermally conductive contact structure that concentrates thermal management resources specifically at the thermal hotspot location on the die. Instead of uniformly distributing thermal management across the entire IC package, the invention places a high-thermal-conductivity pathway (through-mold via with conductive material) directly at the hotspot, making the thermal management system locally optimized where it is most needed. This resolves the contradiction by enabling effective heat dissipation from critical areas without requiring increased overall package size.

The patent applies segmentation by dividing the thermal management function into discrete, targeted components. The through-mold via structure segments the thermal pathway from the die substrate through the molding compound to the external heat sink. This segmented approach allows thermal management to be implemented in a modular fashion, requiring only localized modifications (drilling/filling specific vias) rather than redesigning the entire package structure. This resolves the contradiction by achieving improved thermal management through focused, cost-effective modifications rather than expensive large-scale package redesigns.

The patent uses the through-mold via as an intermediary structure that bridges the thermal gap between the die hotspot and the external heat sink. The via hole filled with thermally conductive material acts as a mediator, creating a controlled thermal pathway through the molding compound. This intermediary approach simplifies manufacturing compared to creating complex internal heat pipes or heat sinks within the mold, as it uses standard via drilling and filling techniques adapted for thermal conduction. The intermediary via structure resolves the contradiction by providing an effective thermal pathway using relatively simple, adaptable manufacturing steps.