Mother board for display device and display device

A mother board for display device, comprising:

• a plurality of panel portions each including a display area and a peripheral area surrounding the display area;
• display elements disposed in the display area;
• a rib layer disposed in the display area and the peripheral area and including pixel apertures overlapping the display elements;
• and
• inspection pads disposed in the peripheral area, wherein
• the inspection pads each include:
• a first metal layer;
• and
• a second metal layer overlapping the first metal layer,
• the rib layer is disposed between the first metal layer and the second metal layer, and includes a first aperture in which the second metal layer is brought into contact with the first metal layer,
• the first metal layer includes:
• a first layer formed of a first metal material;
• a second layer formed of a second metal material and overlapping the first layer;
• and
• a third layer formed of the first metal material and overlapping the second layer,
• the second metal layer includes:
• a fourth layer formed of the first metal material,
• a fifth layer formed of the second metal material and overlapping the fourth layer,
• a sixth layer formed of the first metal material and overlapping the fifth layer, and
• the inspection pads each comprise:
• a first portion in which the first layer, the second layer, the fourth layer, the fifth layer, and the sixth layer are stacked, and
• a second portion in which the first layer, the second layer, the third layer, the fourth layer, the fifth layer, and the sixth layer are stacked.

A display device comprising:

• a display area;
• a peripheral area surrounding the display area;
• display elements disposed in the display area;
• a rib layer disposed in the display area and the peripheral area and including pixel apertures overlapping the display elements;
• and
• inspection pads disposed in the peripheral area, wherein
• the inspection pads each include:
• a first metal layer, and
• a second metal layer overlapping the first metal layer,
• the rib layer is disposed between the first metal layer and the second metal layer, and includes a first aperture in which the second metal layer is brought into contact with the first metal layer, the first metal layer comprises:
• a first layer formed of a first metal material;
• a second layer formed of a second metal material and overlapping the first layer;
• and
• a third layer formed of the first metal material and overlapping the second layer,
• the third layer includes an area exposing the second layer in the first aperture, and
• the second metal layer includes
• a first contact portion in contact with the second layer in the area, and
• a second contact portion in contact with the third layer.