The intention was a key part of CXMT's business plan rather than an opportunistic attempt to acquire Samsung's technology after the start of its own DRAM process development, according to the testimony of a former Samsung engineer identified as Jeon, who worked at Samsung for 28 years before jumping ship to CXMT sometimes around 2016. This April, Jeon was sentenced to seven years in prison for illegally obtaining a 600-step Process Recipe Plan (PRP) information concerning Samsung's DRAM fabrication processes in general and the 18nm-class node in particular.
"From the beginning, CXMT CEO and CTO tried to develop DRAM by stealing Samsung Electronics' Process Recipe Plan (PRP) information," Jeon told the court this week, according to Maeil Business . "CXMT had no research institutes or facilities at the time of its establishment, and had no intention of developing technology through its own research."
Copying the recipe does not automatically give you a working process. Nonetheless, a detailed process recipe can dramatically shorten development of any production node because it reveals things like the sequence of steps, deposition or etch conditions, anneals, cleans, implant parameters, temperatures, pressures, tool types, and so on. For a memory process, a ready process recipe can remove a huge amount of trial-and-error and reveal how the process integration is supposed to work. Meanwhile, even to ensure that the recipe works as intended, one needs to obtain the same or compatible tools as well as adjust their characteristics accordingly.
However, while a process recipe can potentially help to ramp any fabrication technology, a process recipe itself does not necessarily reveal the complete transistor architecture or physical design. For that, perpetrators also want things like cross-sectional structures, masks/layout information, design rules, device dimensions, capacitor geometry, process window, and so on. Such details are not easy to get for a brand-new fabrication technology, but they can be obtained by reverse engineering of shipping products. By combining process recipe with reverse engineering, experienced DRAM engineers can reconstruct much of the technology. Meanwhile, process integration engineers can save years of trial-and-error with actual fab tools.
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Key considerations
- Investor positioning can change fast
- Volatility remains possible near catalysts
- Macro rates and liquidity can dominate flows
Reference reading
- https://www.tomshardware.com/pc-components/dram/SPONSORED_LINK_URL
- https://www.tomshardware.com/pc-components/dram/cxmt-planned-to-use-stolen-samsung-ip-to-develop-its-dram-court-hears-former-samsung-engineer-who-jumped-to-chinese-memory-maker-now-behind-bars#main
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