Qnity Electronics has introduced an integrated materials and process technology platform aimed at addressing the manufacturing demands of next-generation 2.5D and 3D semiconductor packaging. The platform is designed to support advanced applications including chiplet-based architectures, high-bandwidth memory (HBM) and emerging substrate technologies, as growing AI workloads drive demand for higher interconnect density and more complex packaging structures.

The portfolio combines metallisation, solder bumping, dielectric materials and fine-line patterning technologies to help semiconductor manufacturers improve interconnect density, coplanarity, critical-dimension control and production yield. These capabilities are increasingly important for advanced packaging approaches such as Chip-on-Wafer-on-Substrate (CoWoS), Embedded Multi-die Interconnect Bridge (EMIB) and HBM, where tighter control of interconnect structures is required as package dimensions continue to shrink.

Qnity's technologies support SnAg micro-bumps and copper-to-copper direct and hybrid bonding, alongside high-resolution dielectric and patterning processes. The company says its metallisation processes can support line-and-space dimensions of around 2 micrometres while maintaining critical-dimension control and low defectivity. Its solder-plating solutions are also designed to provide consistent micro-bump formation and improved coplanarity across structures with different pitches.

The platform also includes copper deposition technologies focused on improving plating consistency and within-die uniformity, which are becoming increasingly important as interconnect dimensions decrease and multi-die packages grow in complexity. In parallel, Qnity is addressing the dielectric and lithography requirements of advanced packaging through thick dry-film photoresists for high-aspect-ratio copper pillars and fine-feature patterning, as well as dry-film photo-imageable dielectric materials for fan-out panel-level packaging and advanced substrates.

Glass-core substrates represent another area of focus, with Qnity's dielectric technology designed to support through-glass via (TGV) filling and associated reliability requirements. Glass-based substrate architectures are attracting greater interest as semiconductor manufacturers seek scalable approaches for higher-density interconnects and increasingly sophisticated AI systems.

The development highlights the growing convergence between materials engineering and semiconductor packaging processes. As AI accelerators, chiplets, HBM and heterogeneous integration push towards denser and more three-dimensional architectures, controlling dimensional uniformity, surface properties, coplanarity and defect levels across multiple manufacturing stages is becoming essential for reliable high-volume production. Qnity is scheduled to present further details of its platform at the Heterogeneous Integration Global Summit during SEMICON Taiwan 2026 on 1 September.