先进封装，碰壁了

Core Insights - The semiconductor packaging industry is facing increasing challenges as advanced packaging technologies evolve, particularly due to the complexities introduced by artificial intelligence and high-performance computing designs [2][3] - Mechanical and process control issues are becoming significant bottlenecks in scaling up packaging technologies, moving beyond traditional interconnect density limitations [2][3] Group 1: Packaging Challenges - Warping has emerged as a critical issue, affecting assembly and alignment, and is often a manifestation of material and structural imbalances present from the start [5][6] - The mismatch in thermal expansion coefficients (CTE) and stiffness imbalances in layered structures contribute to warping, complicating the packaging process [6][7] - As packaging sizes increase, the economic and yield advantages of wafer-level processes diminish, leading to a shift towards panel-level processes [7][10] Group 2: Material Considerations - Glass substrates offer advantages such as stability and thermal matching with silicon, but they also introduce brittleness and different failure modes, particularly at edges [10][11] - The sensitivity of copper hybrid bonding to contamination and stress increases as interconnect spacing decreases, complicating manufacturing processes [12][13] - The integration of back-end processing into precision budgets is becoming essential as device thickness decreases, impacting overall yield and quality [16][17] Group 3: Supply Chain and Economic Factors - The shortage of substrates is not merely a supply issue but reflects the limitations of traditional substrate platforms in meeting the demands of advanced packaging technologies [19][20] - The industry is exploring new platforms that can support larger components and higher integration levels while managing the mechanical complexities introduced by these advancements [19][22] - The transition to larger modules and tighter chip integration necessitates a holistic view of factors such as substrate selection, carrier strategies, and process sequences to ensure repeatable manufacturing and economic viability [22][23]