Display device with touch unit and valley along display area

A display device comprising:

• a substrate including a display area and a non-display area arranged around the display area;
• a display unit arranged in the display area and including a light-emitting element electrically connected to a thin film transistor;
• an insulator extending from the display area and including a valley portion defined as an opening arranged along an outer side of the display area, with at least a portion of the insulator being arranged in the non-display area;
• an encapsulation unit including at least one inorganic layer and at least one organic layer and arranged on the light-emitting element to encapsulate the light-emitting element;
• and
• a touch unit arranged on the encapsulation unit and including a sensing electrode corresponding to the display area, a signal line corresponding to the non-display area and connected to the sensing electrode, and a dummy layer arranged on one side of the signal line, the dummy layer overlapping the valley portion.

A display device comprising:

• a substrate including a display area and a non-display area arranged around the display area;
• a display unit arranged in the display area and including a light-emitting element electrically connected to a thin film transistor;
• an insulator extending from the display area and including a valley portion defined as an opening arranged along an outer side of the display area, with at least a portion of the insulator being arranged in the non-display area;
• an encapsulation unit including at least one inorganic layer and at least one organic layer and arranged on the light-emitting element to encapsulate the light-emitting element;
• and
• a touch unit arranged on the encapsulation unit and including a reflection prevention unit configured to reduce reflectivity of external light,
• wherein, in a plan view, the reflection prevention unit includes at least a first portion which overlaps an entirety of the valley portion, and a second portion which surrounds the first portion and does not overlap the valley portion.