Applied talks technologies, collaborations to aid chiplet assembly

September 09, 2021 // By Peter Clarke
Applied talks technologies, collaborations to aid chiplet assembly
Chip manufacturing equipment supplier Applied Materials has announced three technology developments in support of heterogeneous integration – or chiplet assembly – within components.

These are die-to-wafer hybrid bonding, wafer-to-wafer bonding and the introduction of novel advanced substrates. Applied is combining advanced packaging technologies and large-area substrates with industry collaborations to aid their adoption.

Heterogeneous integration, otherwise known as chiplet assembly, brings new kinds of design and manufacturing flexibility to semiconductor and system companies by allowing chips of various technologies, functions and sizes to be integrated in one package.


Die-to-wafer hybrid bonding uses direct, copper-to-copper interconnects to increase I/O density and shorten the wiring length between chiplets to improve overall performance, power and cost. To accelerate development of this technology, Applied is adding the ability to model and simulate this type of bonding to its Advanced Packaging Development Center in Singapore. This builds upon the joint development agreement announced in October 2020 between Applied and BE Semiconductor Industries NV (Duiven, The Netherlands) to develop an equipment solution for die-based hybrid bonding.


Wafer-to-wafer bonding enables chipmakers to build certain chip structures on one wafer and others on a second wafer and then bond the wafers to create complete devices. In order to achieve high performance and yield, the quality of the front-end processing steps is critical as is the precise uniformity and alignment of the wafers as they are being bonded.

Applied has reached a joint development agreement with EV Group (EVG) to develop co-optimized solutions for wafer-to-wafer bonding (see EV Group, ASM partner for 3D-IC, chiplet bonding). The collaboration brings together Applied’s semiconductor process expertise in deposition, planarization, implant, metrology and inspection with EVG’s leadership in wafer bonding, wafer pre-treatment and activation, as well as alignment and bond overlay metrology.

Next: Larger substrates

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