Company Filing History:
Years Active: 2007-2010
Title: Chang-soo Jang: Innovator in Printed Circuit Board Technology
Introduction
Chang-soo Jang is a prominent inventor based in Yongin-si, South Korea. He has made significant contributions to the field of printed circuit board technology, holding a total of five patents. His work focuses on innovative methods and structures that enhance the performance and reliability of printed circuit boards.
Latest Patents
One of Chang-soo Jang's latest patents is a method of manufacturing a printed circuit board. This method involves forming a prepreg layer using a reel method, creating a conductive film for circuit patterns on the prepreg layer's surface, and establishing a predetermined circuit pattern on the conductive film. The prepreg layer is designed to have a thickness of no more than 0.15 mm and consists of fiber and resin materials, with the resin content being about 70% or less by volume.
Another notable patent is for a printed circuit board that features a structure aimed at relieving stress concentration. This design addresses the thermal expansion coefficient differences between semiconductor devices and the printed circuit board when they are mounted together. The board includes an inner lead portion connected to the semiconductor device, with leads arranged in parallel and additional leads at both ends of the area. Each lead has a pitch smaller than 30 μm, while the additional leads are wider than 20 μm.
Career Highlights
Chang-soo Jang is currently employed at Samsung Techwin Co., Ltd., where he continues to innovate in the field of electronics. His expertise in printed circuit board technology has positioned him as a key contributor to advancements in this area.
Collaborations
Throughout his career, Chang-soo Jang has collaborated with notable colleagues, including Jae-chul Ryu and Dong-kwan Won. These partnerships have fostered a collaborative environment that encourages innovation and the development of cutting-edge technologies.
Conclusion
Chang-soo Jang's contributions to printed circuit board technology exemplify his commitment to innovation and excellence. His patents reflect a deep understanding of the complexities involved in electronic design and manufacturing. As he continues to work at Samsung Techwin Co., Ltd., his impact on the industry is likely to grow even further.