EPFL scientist are among the leaders in the race to develop an industry-ready prototype of a 3D chip as well as a high-performance and reliable manufacturing method.
The chip is composed of three or more processors that are stacked vertically and connected together -- resulting in increased speed and multitasking, more memory and calculating power, better functionality and wireless connectivity. Credit: EPFL / Alain Herzog
The chip is composed of three or more processors that are stacked vertically and connected together—resulting in increased speed and multitasking, more memory and calculating power, better functionality and wireless connectivity.Developed at the Microelectronics Systems Laboratory (LSM), Director Yusuf Leblebici is unveiling these results to experts on Wednesday the 25th of January in Paris, in a keynote presentation at the 2012 Interconnection Network Architectures Workshop.
To reach this result, the team had to overcome a number of difficulties, such as the fragility of the copper connections and supports which, because they are miniaturized to such an extreme degree (about 50 micrometers in thickness), are as thin as a human hair. "In three years of work, we made and tested thousands of TSV connections, and had more than 900 functioning simultaneously," says Leblebici. "Now we have a production process that is really efficient." He adds that the laboratory has also manufactured 3D multi-core processors, connected by a TSV network.
This technology will initially be made available to a number of academic research teams for further development, before being commercialized.
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