Out With Organic, In with glass? DNP Unveils Glass Core Substrate Tech For Chips
As the chip industry develops more sophisticated processors with higher heat dissipation requirements, some firms have moved on to chiplet-based designs. This not-so-gradual shift has resulted in chip packaging technologies becoming increasingly important. Large and highly complex chips such as Nvidia's H100 and advanced multi-chip solutions like Intel's Data Center Max GPU (Ponte Vecchio) present new requirements for packaging materials. To that end, Dai Nippon Printing (DNP) is showcasing a new development for semiconductor packages – Glass Core Substrate (GCS) – which it says can address many of those challenges.
Typically, modern chips are installed on fine pitch substrates (FPS), which are then put on multi-layer high-density interconnect (HDI) substrates. The most advanced CPU/GPU HDI substrates these days use Ajinomoto Build-up Film(ABF), which combines organic epoxy resins, hardener, and inorganic microparticle filler, according to the manufacturer. It is easy to use, and it can achieve high-density pitching (thus enabling high density metal wiring), it has insulation properties that are good enough for modern chips, high rigidity, high durability, and low thermal expansion, among other factors.