Samsung Electronics 1c DRAM Process Expansion Reaches Yield Milestones While Facing Complex HBM4 Assembly and Stacking Challenges
Samsung Electronics seeks to stabilize its production process which supports its goal to increase memory production capacity for High Bandwidth Memory sixth generation HBM4 requirements through its 1c DRAM process expansion. The 1c DRAM production process has achieved its first 80% yield threshold according to biz.chosun reporting yet industry experts remain doubtful about the actual production capacity of HBM4 units. HBM4 production presents an operational challenge because its vertical stacking and thermal management and signal integrity methods create problems which differ from the processes used in general purpose semiconductor manufacturing.
The functional yield of integrated HBM4 products currently falls short of 60% according to industry analysts who estimate the current functional yield at less than that threshold. The assembly phase creates additional failure points which disrupt the successful production of each DRAM die after its individual components have been processed. The main challenge for HBM4 production lies in achieving complete alignment of stacked chips throughout the entire finished product. The company requires Samsung to complete the yield maturation process by mid 2023 so they can establish production capabilities to support their major artificial intelligence clientele which includes Nvidia.
The urgent nature of this project exists because Samsung needs to modify its current production methods which directly impact its financial performance. The company has integrated a higher frequency of extreme ultraviolet lithography steps compared to its primary competitors. The performance advantage offered by this strategy requires additional process steps which result in increased costs for production. The company must protect its profit margins while building capacity to match competing companies who have adopted alternative cost control methods.
Samsung needs to prove its technology through successful verification but market observers believe that this achievement creates an opening for future market competition which has not yet started. Samsung needs to choose between two options which involve normalizing its processes and stabilizing its production expenses. The company's ability to maintain its position in the AI memory market depends on its ability to produce high volume HBM4 output which will demonstrate its capacity to do so after the recent stabilization of the 1c DRAM process.
