Display device and manufacturing method thereof

A display device includes, a light emitting diode disposed on a substrate, and including an emission layer, an encapsulation layer disposed on the light emitting diode, a first layer disposed on the encapsulation layer and including an opening, a light blocking pattern disposed in the opening and extending in a first direction, and a second layer disposed on the first layer and the light blocking pattern. A refractive index of the first layer and a refractive index of the second layer are different from each other.