An IC substrate serves as the foundation for integrated circuits, providing mechanical support and electrical connectivity between the chip and the external environment. Essentially, it acts as a bridge, enabling the electronic signals to travel efficiently. The substrate is crucial in ensuring that the IC functions properly and reliably, making it a vital component in any semiconductor package.

IC substrates are typically made from materials like epoxy glass, ceramics, or organic compounds. These materials are chosen for their excellent electrical insulating properties and thermal conductivity. The ability of an IC substrate to dissipate heat is essential as it prevents overheating, ensuring the longevity and performance of the integrated circuit.