LED_Ultra_3in1 adopts edge-lit tech. It allows using fewer LEDs in design, and creates a 0.5 cm of the world 's slimmest thickness. This feature make LED_Ultra_3in1 not only a ceiling panel light, but also a large area uniform luminescent source to customize interior design. We also invent a modular components to create multiple-use funtion. It can be used as a surface mount fixture, a suspension fixture, or can be connecting together easily when combined with different expansion modules.