Display device

A display device comprising:

• a substrate including a display region, a non-display region on at least one side of the display region, an additional region protruding from a portion of the non-display region, and a bent region in the additional region;
• a plurality of pixels in the display region;
• first lines disposed on the substrate in the non-display region, the first lines extending along the non-display region;
• a first insulating layer disposed on the first lines and the substrate;
• second lines disposed on the first insulating layer in the non-display region;
• a second insulating layer in the non-display region over the second lines and having an upper surface unevenness formed by the first and second lines and including an opening that exposes the substrate of the bent region therethrough;
• a bent insulating layer filling in the opening and including an organic material;
• third lines over the second insulating layer in the non-display region;
• and
• an organic insulating layer disposed on the second insulating layer and between at least adjacent third lines in a plan view, the organic insulating layer to planarize the upper surface unevenness and including a same material as the bent insulating layer, wherein
• the third lines intersect the first and second lines in the non-display region with the organic insulating layer interposed therebetween.