This inventor holds 4 USPTO granted patents. Top assignees: Fairchild Korea Semiconductor Ltd., Samsung Sdi Co., Inc., System General Corporation. Active years: 2012-2013.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Bucheon, KR (2012)
- Seoul, KR (2012 - 2013)
Company Filing History:
2 out of 354 
1 out of 7,663 
1 out of 306 
Years Active: 2012-2013
Title: Jin-Hwa Chung: Innovator in LED Technology
Introduction
Jin-Hwa Chung is a prominent inventor based in Seoul, South Korea. He has made significant contributions to the field of LED technology, holding a total of 4 patents. His innovative work focuses on enhancing the efficiency and performance of LED drivers.
Latest Patents
One of Jin-Hwa Chung's latest patents is titled "High efficiency LED driver with current source regulations." This invention provides a control circuit for LED drivers, incorporating a voltage-feedback circuit that senses a voltage-feedback signal to generate a voltage loop signal. Current sources are coupled to the LEDs to control LED currents, while a detection circuit generates a current-source loop signal in response to the minimum voltage of the current sources. Additionally, a buffer circuit generates a feedback signal to limit the maximum voltage of the LEDs and regulate the minimum voltage across the current sources.
Another notable patent is "LED light emitting device and driving method thereof." This invention relates to an LED light emitting device and a driving method that improves the slew rate of a channel current flowing through an LED channel when driven with a pulse width modulation method. The invention includes an LED channel with multiple LED elements connected in series, a current control switch for performing a switching operation, and an operational amplifier that controls the switch based on a pulse width modulation signal.
Career Highlights
Jin-Hwa Chung has worked with notable companies in the semiconductor industry, including Fairchild Korea Semiconductor Ltd. and System General Corporation. His experience in these organizations has contributed to his expertise in LED technology and innovation.
Collaborations
Jin-Hwa Chung has collaborated with talented individuals in his field, including Chan Son and Ta-Yung Yang. Their combined efforts have led to advancements in LED technology and improved product designs.
Conclusion
Jin-Hwa Chung is a distinguished inventor whose work in LED technology has resulted in multiple patents and significant advancements in the industry. His contributions continue to influence the development of efficient lighting solutions.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile