Display device and method of manufacturing the same

A display device comprising:

• a substrate having a transmission area, a display area extending around a periphery of the transmission area, and an intermediate area between the transmission area and the display area;
• a first active layer on the substrate and comprising a first active pattern in the display area;
• a first conductive layer on the first active layer and comprising a gate electrode overlapping the first active pattern;
• a second active layer on the first conductive layer and comprising a second active pattern in the display area;
• a second conductive layer between the first conductive layer and the second active layer;
• a third conductive layer on the second conductive layer and comprising a bridge electrode electrically connecting the gate electrode and the second active pattern;
• a first sub-layer in the intermediate area and on a same layer as the first conductive layer, the first sub-layer having a first sub-opening;
• and
• a second sub-layer in the intermediate area and covering an outer surface of the first sub-layer, the second sub-layer having a second sub-opening connected to the first sub-opening,
• wherein a slope of sidewalls of the first sub-layer and the second sub-layer, which are connected to each other, varies continuously inwardly toward a center of the second sub-opening in a direction away from the substrate.

A method of manufacturing a display device, the method comprising:

• forming a first active layer comprising a first active pattern in a display area of a substrate, the substrate having a transmission area, the display area extending around a periphery of the transmission area, and an intermediate area between the transmission area and the display area;
• forming a first conductive layer comprising a gate electrode overlapping the first active pattern on the first active layer;
• forming a second active layer on the first conductive layer and comprising a second active pattern;
• forming a second conductive layer between the first conductive layer and the second active layer;
• forming a third conductive layer on the second conductive layer and comprising a bridge electrode electrically connecting the gate electrode and the second active pattern;
• forming a first sub-layer in the intermediate area and on the first active layer;
• forming a second sub-layer in the intermediate area and covering an outer surface of the first sub-layer;
• forming an upper insulating layer having an insulating opening exposing a portion of the second sub-layer on the third conductive layer and the second sub-layer;
• exposing a portion of the first sub-layer by removing the second sub-layer exposed from the upper insulating layer;
• and
• removing the first sub-layer exposed from the second sub-layer,
• wherein the forming of the second sub-layer and the forming of the third conductive layer are concurrently performed in a same process.