Display device and mother substrate for display device

A mother substrate for a display device, comprising:

• a substrate;
• a plurality of panel portions provided above the substrate;
• and
• an alignment mark provided outside the panel portions above the substrate, wherein
• each of the panel portions comprises:
• an organic insulating layer provided over a display area which displays an image and a surrounding area outside the display area;
• a lower electrode provided on the organic insulating layer in the display area;
• a rib formed of an inorganic insulating material and overlapping a peripheral portion of the lower electrode;
• a partition which comprises a lower portion provided on the rib and formed a conductive material, and an upper portion provided on the lower portion and protruding from a side surface of the lower portion;
• an organic layer provided on the lower electrode and including a light emitting layer;
• an upper electrode which covers the organic layer and is in contact with the lower portion of the partition;
• and
• a terminal electrode provided in the surrounding area, and
• a mark area in which the alignment mark is provided comprises a top layer formed of a material different from the organic insulating layer.

A display device comprising:

• a substrate;
• an organic insulating layer provided over a display area which displays an image and a surrounding area outside the display area above the substrate;
• a lower electrode provided on the organic insulating layer in the display area;
• a rib formed of an inorganic insulating material and overlapping a peripheral portion of the lower electrode;
• a partition which comprises a lower portion provided on the rib and formed of a conductive material, and an upper portion provided on the lower portion and protruding from a side surface of the lower portion;
• an organic layer provided on the lower electrode and including a light emitting layer;
• an upper electrode which covers the organic layer and is in contact with the lower portion of the partition;
• and
• a terminal electrode provided in the surrounding area, wherein
• the organic insulating layer comprises a first aperture from which the terminal electrode is exposed and a recess portion located outside the first aperture,
• the rib extends to the surrounding area and comprises a second aperture from which the terminal electrode is exposed, and
• a peripheral portion along the second aperture of the rib overlaps the recess portion and is spaced apart from the organic insulating layer.