Location History:
- Asan, KR (2000)
- Cheonan, KR (2006)
Company Filing History:
Years Active: 2000-2006
Title: Innovations of Chang Cheol Lee in Semiconductor Packaging
Introduction
Chang Cheol Lee is a notable inventor based in Cheonan, South Korea. He has made significant contributions to the field of semiconductor packaging, holding 2 patents that showcase his innovative approaches. His work primarily focuses on methods that enhance the reliability and efficiency of chip stack packages.
Latest Patents
Chang Cheol Lee's latest patents include a method for joining lead frames in a package assembly and a multi-chip stack package. The method for joining lead frames involves creating a joining mediator on the joining portions of at least one lead frame. This mediator possesses anti-oxidation and inter-metallic diffusion properties, which can be formed from materials such as gold wires, gold bumps, solder bumps, and solder bars. By applying heat and pressure, the joining mediator forms a robust inter-metallic joint layer that effectively connects the lead frames.
The multi-chip stack package eliminates the need for a die pad, allowing for a more balanced inner package structure. This design reduces the risk of poor molding that could expose package elements. In this package, an upper chip is bonded to the top surface of a lower chip, with auxiliary leads providing stability and preventing tilting during transfer-molding. These innovations contribute to more efficient semiconductor packaging solutions.
Career Highlights
Chang Cheol Lee is currently employed at Samsung Electronics Co., Ltd., where he continues to develop cutting-edge technologies in semiconductor packaging. His work has been instrumental in advancing the capabilities of multi-chip packages, making them more reliable and efficient.
Collaborations
Throughout his career, Chang has collaborated with talented individuals such as Kwan Jai Lee and Young Jae Song. These partnerships have fostered a creative environment that encourages innovation and the development of new technologies.
Conclusion
Chang Cheol Lee's contributions to semiconductor packaging through his innovative patents have significantly impacted the industry. His work at Samsung Electronics Co., Ltd. continues to push the boundaries of technology, ensuring that semiconductor packaging remains efficient and reliable.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.