Display device

A display device comprising:

• a lower substrate having a display area and a peripheral area at least partially surrounding the display area;
• a plurality of lower electrodes disposed in the display area and on the lower substrate;
• a pixel defining layer configured to cover a portion of each of the lower electrodes;
• a light emitting layer disposed on the lower electrodes and the pixel defining layer;
• an upper electrode disposed on the light emitting layer;
• a plurality of optical filters disposed on the upper electrode and spaced apart from each other;
• a lower light blocking layer disposed between the optical filters, and having a plurality of openings;
• an upper substrate disposed on the lower light blocking layer to oppose the lower substrate;
• and
• an alignment structure disposed in the peripheral area of the lower substrate and the upper substrate, and including a material identical to a material of the pixel defining layer and the lower light blocking layer, wherein the alignment structure includes:
• a first alignment pattern disposed on a bottom surface of the upper substrate;
• and
• a second alignment pattern disposed on a top surface of the lower substrate,
• wherein the first alignment pattern includes:
• a reference pattern;
• and
• outer peripheral patterns spaced apart from the reference pattern while surrounding the reference pattern,
• wherein the outer peripheral patterns are spaced apart from each other.