Company Filing History:
Years Active: 2002-2008
Title: Jo Gyoo Chul: Innovator in Electronic Device Manufacturing
Introduction
Jo Gyoo Chul is a prominent inventor based in Miyagi-ken, Japan. He has made significant contributions to the field of electronic device manufacturing, holding a total of 6 patents. His work focuses on developing innovative etching agents and methods that enhance the efficiency and effectiveness of electronic device substrates.
Latest Patents
One of Jo Gyoo Chul's latest patents is an etching reagent and method for manufacturing electronic device substrates and electronic devices. This invention provides an etching agent capable of etching a copper (Cu) film using a simple chemical etching method, such as immersion. The etching agent comprises an aqueous solution containing potassium hydrogen peroxosulfate and hydrofluoric acid. This formulation allows for minimal time-dependent changes in the etching rate and prevents pattern narrowing due to irregular side etching of the Cu film. The process involves forming masks of a given pattern on a laminated film created by sequentially depositing a titanium (Ti) or Ti alloy film and a Cu film on a substrate. The gate electrode and lower pad layer with specified patterns are then formed by etching the laminated film using this innovative etching agent.
Career Highlights
Jo Gyoo Chul has worked with notable companies in the electronics industry, including LG Philips LCD Co., Inc. and LG Display Co., Ltd. His experience in these organizations has contributed to his expertise in developing advanced technologies for electronic devices.
Collaborations
Throughout his career, Jo Gyoo Chul has collaborated with talented individuals such as Chae Gee Sung and Makoto Sasaki. These partnerships have fostered innovation and the exchange of ideas in the field of electronic device manufacturing.
Conclusion
Jo Gyoo Chul is a distinguished inventor whose work in etching agents and electronic device substrates has made a significant impact on the industry. His innovative approaches continue to advance the technology used in electronic devices, showcasing his dedication to improving manufacturing processes.