1. Extremely high mobility TFT with a layered-2D perovskite semiconductor. 2. Next-generation large area electronics through material-device-circuit co-optimization (University of Surrey, UK). 3. BK21: Next-generation AR/VR Leading Hardware Technology. 4. Development of a power module for portable X-ray Systems. 5. Development of a highly stable electron emission source for high power multibeam X-ray sources.