1. Overview

   Energy consumptions are one of the critical problems in the current and future industries. In particular, lighting such as bulb and fluorescent is a large fraction of energy consumption. Therefore, there exist strong needs for an altenative light source for energy savings. Light Emitting Diodes (LEDs) are one of the promising light sources for future solid state lighting due to their low energy consumptions, longer lift-times, and environmental friendlinesses.

                                                                          [Scientific American 2001]

2. Trends; past, present, and future

   Before 2000's, the development of LEDs are focused on the application of signals and indicators. However, current trends are moving to the possible application of an alternative light source for future solid state lighting. So far, many research gropus and leading companies for LEDs have widely investigated to develop high performance LEDs for future solid state lighting. However, we are facing some limits for using current LEDs as an alternative light source. Therefore, we need more challenges to overcome these limits.

                                                                                                         [Compound Semiconductor Magazine 2002]

3. High power & high efficiency LEDs

4. OEMD lab's focus!

       - Development of transparent electrode for top emitting LEDs (Blue & White)

       - Development of highly reflective electrode for flip-chip LEDs (Blue & White)

       - Improvement of LED performances (Blue & White)

       - Evaluation of reliability of LEDs (Blue & White)