Display device including alignment pattern

A display device comprising:

• a substrate including a first component area in which a first transmission portion is arranged, a second component area that surrounds the first component area and in which a second transmission portion is arranged, the second transmission portion having a second light transmittance that is different from a first light transmittance of the first transmission portion, and a main display area surrounding at least a portion of the second component area;
• an insulating layer arranged on the substrate and having a first transmission hole corresponding to the first transmission portion and exposing a first portion of an upper surface of the substrate;
• and
• a plurality of display elements arranged on the insulating layer and corresponding to the first component area, the second component area, and the main display area,
• wherein the insulating layer comprises an inorganic insulating layer and an organic insulating layer that is arranged on the inorganic insulating layer, and
• wherein at least one of the inorganic insulating layer and the organic insulating layer has a second transmission hole that exposes a second portion of the upper surface of the substrate in the second transmission portion.