In this paper, we provide a basic data to constitute knowledge map through analysis of competition situation such as analysis of patent activity for each nationality, analysis of patent activity for each applicant for a patent, analysis of patent activity for each technical area and analysis of competition status for power of security for market which consider qualitative level. In order to analysis LED data, we choose patent data of LED.
-Recently, the technological progress in manufacturing power devices based on wide bandgap materials, for example, silicon carbide(SiC) or gallium nitride(GaN), has resulted in a significant improvement of the operating-voltage range and switching speed and/or specific on resistance compared with silicon power devices. This paper will give an overview of the status on The Next generation Power Devices such as SiC/GaN with a focus on commercialization and research.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.