Light emitting diode device having advanced light extraction efficiency and preparation method thereof

Disclosed is an LED device, a method for manufacturing the same, and a light emitting apparatus having the same. The LED device includes (a) a light emitting diode unit and (b) an adjustment layer laminated on a light emitting surface of the light emitting diode unit, a fine pattern having being formed on the adjustment layer by repeating a shape in a light emission direction. The adjustment layer is (i) at least one layer formed by aligning transparency adjustment particles having a shape or (ii) a polymer film layer having a fine pattern imprinted on the polymer film layer so as to adjust transparency. A fine pattern adjustment layer having various shapes and an adjustable size is introduced on the light emitting surface of the LED unit. As a result, the light extraction efficiency of the surface of the LED unit improves together with ease of manufacturing and secured uniformity.