Just as the transition from a 15 cm vacuum tube to a 1 cm transistor triggered the IT revolution, light-emitting devices are also evolving beyond conventional LEDs used simply for illumination into ultra-miniaturized opto semiconductors that will drive the AI era. Based on proprietary technologies developed in Korea, including WICOP, device dimensions have been reduced from conventional packages of approximately 2,000 µm to an extreme scale of 1 µm — roughly 1/2,000 of the original size. These nearly invisible 1 µm opto semiconductors are expecte…