SK keyfoundry, in Collaboration with LB Semicon, Co-Develops Direct RDL to Advance Semiconductor Packaging and Strengthen Competitiveness in Automotive High-Performance Semiconductors
RDL refers to metal wiring and insulating layers on top of semiconductor chips to enable electrical connections. It is primarily used in WLP (Wafer Level Packaging) and FOWLP (Fan-Out Wafer Level Packaging) processes to enhance connectivity between the chip and the substrate while minimizing signal interference. The newly co-developed Direct RDL by SK keyfoundry and LB Semicon supports power semiconductors with high current capacity, outperforming competitors. The technology achieves a metal wiring thickness of up to 15 μm and wiring density covering up to 70% of the chip area – making it suitable not only for mobile and industrial applications but also for automotive use. In particular, the solution meets the Auto Grade 1 classification under AEC-Q100 international automotive semiconductor quality standard, ensuring reliable operation in harsh environments with an operating temperature range of –40℃ to +125℃. Unlike competitors, this makes the technology fully viable for automotive products. In addition, by providing a Design Guide and Process Development Kit, SK keyfoundry can now offer a process solution tailored to customer needs, enabling smaller chip sizes, lower power consumption, and cost-effective packaging.
Semiconductor packaging and testing specialist LB Semicon stated that leveraging SK keyfoundry's deep understanding of semiconductor processes and advanced manufacturing capabilities significantly shortened the development timeline. Through the integration of its own back-end processing technologies with SK keyfoundry's foundry process expertise, the two companies successfully achieved optimized wafer-level Direct RDL formation, which is expected to greatly enhance production efficiency.
LB Semicon's CEO Namseog Kim commented, 'The joint development of direct RDL has served as an important milestone in strengthening the technological competitiveness of SK keyfoundry and LB Semicon.' He also added, 'Through close collaboration between the two companies, we plan to establish a strong foothold in the next-generation semiconductor packaging market, built on high reliability.'
'The joint development with LB Semicon, the semiconductor packaging specialist, holds significant meaning as it demonstrates the successful integration of our company's advanced and comprehensive manufacturing expertise into cutting-edge semiconductor packaging process development,' said Derek D. Lee, CEO of SK keyfoundry. 'SK keyfoundry will continuously collaborate with LB Semicon, a leading company in semiconductor technology, to further evolve and position ourselves as a premier foundry with proven capabilities in delivering high-performance and high-reliability semiconductor solutions to the global market.'
About SK keyfoundry
Headquartered in Korea, SK keyfoundry provides specialty Analog and Mixed-Signal foundry services for semiconductor companies to serve a wide range of applications in the consumer, communications, computing, automotive and industrial industries. With a broad range of technology portfolios and process nodes, SK keyfoundry has the flexibility and capability to meet the ever-evolving needs of semiconductor companies across the globe. Please visit https://www.skkeyfoundry.com for more information.
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