Disclosed herein are a light-emitting diode (LED) device, and an ink composition including the same, which can reduce an exposed area of a photoactive layer exposed at a surface to prevent a decrease in efficiency due to a surface defect, and repair the surface defect and minimize degradation in light emission efficiency due to the surface defect even when the surface defect occurs to maintain high efficiency in light extraction efficiency and, simultaneously, minimize a side surface contact through a mounting method using dielectrophoresis when LED devices are self-aligned on a mounting electrode to improve a drivable (or light emittable) mounting efficiency.