先进封装解芯片难题-封装摩尔时代的突破

Core Insights - The report from Jinyuan Securities highlights the exponential growth in costs associated with advanced processes in the semiconductor industry, particularly noting that the design cost of a 2nm chip is approximately $725 million, which is 25 times that of a 65nm chip [1][2] - Capital expenditures (CapEx) for building semiconductor manufacturing facilities also reflect this trend, with the investment required for a 5nm chip factory being five times that of a 20nm factory [1][2] Advanced Packaging Trends - The shift towards advanced packaging is driven by the combination of chiplets and high-end advanced packaging, which allows for mixed processes, reduced time to market, reusability, and improved yield [2] - Chiplets can utilize different processes based on demand, such as using 3nm technology for CPUs while employing mature processes for I/O or analog circuits, thus shortening R&D cycles and design costs [2] - The performance per watt per dollar (Perf/Watt/Dollar) indicates that large chips combined with 3D stacking are more suitable for medium and small systems, while complex systems benefit from the "small die with better yield" approach [2] AI Chip Performance - In terms of raw computational performance, AI-specific chips (ASICs) are weaker than AI GPUs, and even large language models like GPT-4 cannot run on a single chip [3] - To match the performance of AI GPUs, ASICs require larger clusters of dedicated chips, and advanced packaging through chiplets and heterogeneous integration is key to maximizing performance while controlling costs [3] Technological Evolution in Advanced Packaging - The core of technological evolution in advanced packaging is the continuous increase in interconnect I/O count and bandwidth density, transitioning from high-density electronic interconnects to incorporating optical interconnects [4] - The second generation of packaging aims to support higher interconnect I/O demands in the AI era, addressing bandwidth and power consumption bottlenecks [4] 2.5D Packaging Technology - Silicon bridge packaging technology serves as a 2.5D solution, integrating one or more silicon bridges within a specific packaging substrate to ensure interconnectivity between multiple chips [5] - The main factors limiting 2.5D interconnect density include solder bridging risks, intermetallic compounds, and underfill process challenges [5] - Direct bonding and hybrid bonding techniques are crucial for enhancing interconnect density by eliminating solder layers and achieving closer interconnect spacing [5] Advanced Packaging Market Outlook - The advanced packaging market in China is projected to reach approximately 96.7 billion yuan in 2024, accounting for 30.95% of the global market, with expectations to grow to 188.8 billion yuan by 2029, reflecting a compound annual growth rate (CAGR) of 14.30% [7] - By 2029, China's advanced packaging and testing market is anticipated to represent 36% of the global market size [7] - The unit packaging cost is higher due to the complexity of processes and the use of silicon interposers and embedded silicon bridge technology [7] Related Companies - Equipment manufacturers include Tuojing Technology (688072.SH), Zhongwei Company (688012.SH), Shengmei Shanghai (688082.SH), Guangli Technology (300480.SZ), Beifang Huachuang (002371.SZ), and Zhongke Feimiao (688361.SH) [7] - Material suppliers include Dinglong Co., Ltd. (300054.SZ), Anji Technology (688019.SH), and Feikai Materials (300398.SZ) [7] - OSAT companies include Shenghe Jingwei (unlisted), Changdian Technology (600584.SH), and Shenzhen Technology (000021.SZ) [7]