Gyun Chae

Title: Innovations by Inventor Gyun Chae

Introduction

Gyun Chae is a notable inventor based in Taejon, South Korea. He has made significant contributions to the field of display technology and electronic ballasts, holding a total of 2 patents. His work focuses on enhancing the efficiency and functionality of electronic devices.

Latest Patents

One of Gyun Chae's latest patents is for flat field emitter displays. This innovation involves flat panel field emitter displays that utilize a planar cathode structure instead of the conventional microtip structure. This design increases the degree of integration and allows for operation at low voltages and high speeds. The structure includes a channel insulator formed below the cathode, underlaid by a gate, which enables control over electron emission through gate voltage. The arrangement of electrodes in the order of anode, cathode, and gate simplifies the manufacturing process. This technology can be applied to various video systems, ranging from small displays to large screens, while utilizing existing semiconductor processes.

Another significant patent by Chae is a power-factor correction circuit for electronic ballasts used in fluorescent lamps. This circuit includes a full-wave rectification circuit that rectifies AC input voltage and a DC-link capacitor that supplies a DC-link voltage. The design features a charge pumping circuit and a valley-fill DC voltage supply circuit, which improve the power factor of the ballast. This innovation allows for automatic control of the power supply based on the number of fluorescent lamps in use, enhancing energy efficiency.

Career Highlights

Gyun Chae is affiliated with the Korea Advanced Institute of Science and Technology, where he continues to contribute to research and development in his field. His work has garnered attention for its practical applications and innovative approaches to existing technologies.

Collaborations

Chae has collaborated with notable colleagues, including Gyu Hyeong Cho and Nam Sung Jung, further enriching his research and development efforts.

Conclusion

Gyun Chae's contributions to display technology and electronic ballasts demonstrate his commitment to innovation and efficiency. His patents reflect a deep understanding of engineering principles and a drive to improve existing technologies.