日本芯片，“复仇”韩国？

Group 1 - The global storage industry has undergone a significant power shift over the past thirty years, with Japan losing its dominance in the DRAM market to South Korean manufacturers [1][2][10] - In the 1980s, Japanese companies held over 50% of the global DRAM market share, benefiting from a strong manufacturing base and government support for semiconductor development [3][4][8] - The decline of Japanese DRAM dominance began in the 1990s due to economic challenges, structural changes in the DRAM industry, and increased competition from South Korean firms like Samsung and SK Hynix [8][9][10] Group 2 - High Bandwidth Memory (HBM) has emerged as a critical component in AI computing, with South Korean manufacturers capitalizing on their expertise in DRAM technology to dominate this market [12][13] - Japan's current presence in the HBM market is minimal, primarily limited to materials and equipment, lacking significant production capacity or technological advancements [13][14] - The introduction of SAIMEMORY, a subsidiary of SoftBank, aims to innovate in memory technology with the development of Z-Angle Memory (ZAM), which seeks to overcome limitations of current memory architectures [15][16][18] Group 3 - Japan's semiconductor strategy has shifted from attempting to regain past dominance to focusing on securing positions in key technological areas, such as advanced logic processes and packaging technologies [19][20][30] - The establishment of Rapidus represents Japan's effort to maintain a foothold in advanced semiconductor manufacturing, collaborating with IBM and ASML to ensure technological relevance [19][20] - Japanese companies are also investing in AI chip development, with firms like PFN and EdgeCortix leading initiatives to create specialized AI processors for various applications [21][26][28] Group 4 - The overall strategy for Japan's semiconductor industry is to avoid direct competition with South Korea and the U.S. by focusing on niche markets and innovative technologies rather than scale [30][31] - Japan's renewed focus on semiconductor technology reflects a strategic re-evaluation of its position in the global market, aiming to redefine its role in the evolving landscape of AI and memory technologies [29][30]