This inventor holds 3 USPTO granted patents and 1 published patent application. Top assignees: Knj Co., Ltd., Wooree E&l Co., Ltd., Wooree Lst Co. Ltd.. Active years: 2012-2025.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
1 out of 2 
1 out of 2 
1 out of 3 Years Active: 2012-2025
Title: The Innovations of Bun-Hei Koo
Introduction
Bun-Hei Koo is a notable inventor based in Seoul, South Korea. He has made significant contributions to the field of light-emitting devices, holding a total of 3 patents. His work focuses on improving the efficiency and performance of these devices through innovative designs and materials.
Latest Patents
One of his latest patents is titled "Light-emitting device using clad layer consisting of asymmetrical units." This invention relates to a light-emitting device that utilizes a clad layer made up of asymmetric units. The clad layer is designed to control the inflow of both electrons and holes into the active layer, thereby enhancing the internal quantum efficiency. The structure of the clad layer consists of multiple units with varying energy bandgaps, which are stacked to create an asymmetric energy band diagram.
Another significant patent by Koo is "Light emitting device using compound semiconductor." This invention aims to improve the electrical characteristics and internal quantum efficiency of light-emitting devices by maximizing the recombination rate of electrons and holes within the active layer. The device includes a substrate, a compound semiconductor layer with an active layer, and a current spreading layer that ensures uniform distribution of electrons or holes into the active layer.
Career Highlights
Bun-Hei Koo has worked with several companies throughout his career, including Wooree E&L Co., Ltd. and Wooree LST Co., Ltd. His experience in these organizations has contributed to his expertise in the development of advanced light-emitting technologies.
Collaborations
Koo has collaborated with notable colleagues such as Jae-Eung Oh and Young-Kyun Noh. These partnerships have likely fostered innovation and creativity in his projects.
Conclusion
Bun-Hei Koo's contributions to the field of light-emitting devices demonstrate his commitment to innovation and excellence. His patents reflect a deep understanding of semiconductor technology and its applications.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile