台积电美国封装厂，重要进展

Core Viewpoint - TSMC is accelerating its expansion in the United States, planning to establish two advanced packaging plants (AP1, AP2) with construction expected to start in the second half of 2026 and operational by 2028, in response to local demand for AI and HPC chip packaging [2][3]. Group 1: Expansion Plans - TSMC's second wafer fab (P2) in the U.S. is set to introduce 2nm process technology earlier than initially planned, while the advanced packaging plants are located directly across from P3, with construction now expedited to 2026 [2][3]. - The company aims to build two new advanced packaging facilities and a research center in Arizona, enhancing the AI supply chain [2][3]. Group 2: Technology and Production - AP1 will incorporate SoIC and CoW technologies, while AP2 is focused on CoPoS, which is expected to mature by 2028 [3][4]. - SoIC is currently TSMC's most advanced packaging technology, already in mass production for clients like AMD, Apple, and NVIDIA [3][4]. Group 3: Investment and Market Impact - TSMC announced a $100 billion investment in the U.S., which includes the construction of three wafer fabs, two advanced packaging facilities, and a research center, marking the largest single foreign direct investment in U.S. history [6][7]. - The establishment of advanced packaging lines in the U.S. is driven by the needs of major clients such as Apple, NVIDIA, and AMD, with a focus on CoWoS and InFO technologies [6][8]. Group 4: Supply Chain Considerations - The construction of advanced packaging facilities requires a complete supply chain, including materials and testing capabilities, which may take at least four years to establish [7][8]. - TSMC's expansion in the U.S. could impact the existing packaging and testing supply chain in Taiwan, necessitating a mature ecosystem for testing and packaging [8][9].