Display device having side surface connection pads

A display device comprising:

• a substrate including a display area and a peripheral area adjacent to the display area;
• a first insulating layer disposed over the peripheral area of the substrate, including a plurality of through holes extending in a direction perpendicular to the substrate, and including at least one recess portion in a side surface of the first insulating layer, wherein a portion of the side surface of the first insulating layer other than another portion of the side surface where the at least one recess portion is disposed is aligned with the side surface of the substrate, each of the at least one recess portion having a shape of a part of a through hole extending in the direction perpendicular to the substrate, and each of the at least one recess portion has a volume smaller than a volume of one of the plurality of through holes;
• and
• a first pad disposed on the first insulating layer, extending to an edge of the substrate, and completely filling the at least one recess portion, the first pad including an outermost front end surface that faces away from the display area and is aligned with the side surface of the substrate.

A display device comprising:

• a substrate including a display area and a peripheral area adjacent to the display area;
• a first insulating layer disposed over the peripheral area of the substrate and including:
• a first side surface portion including a side surface aligned with a side surface of the substrate;
• a second side surface portion spaced apart from the first side surface portion and including a side surface aligned with the side surface of the substrate;
• a plurality of through holes extending in a direction perpendicular to the substrate;
• and
• at least one recess portion between the first side surface portion and the second side surface portion, each of the at least one recess portion having a shape of a part of a through hole extending in the direction perpendicular to the substrate, each of the at least one recess portion having a volume smaller than a volume of one of the plurality of through holes;
• a plurality of first pads disposed on the first insulating layer and spaced apart from each other, the plurality of first pads completely filling the at least one recess portion and completely filling at least a part of the plurality of through holes;
• and
• a second pad disposed between the substrate and the plurality of first pads, contacting the plurality of first pads, and including an outermost front end surface aligned with the side surface of the substrate, wherein
• at least a part of the plurality of first pads includes an outermost front end surface aligned with the side surface of the substrate.