Display device

A display device comprising:

• a substrate comprising a display area on which a plurality of pixels are disposed, a peripheral area surrounding the display area, a hole area positioned inside the display area, a pad area, and a bending area positioned between the peripheral area and the pad area in a plan view;
• a crack detection line comprising a first part disposed on the substrate in the pad area and extending to the bending area and the peripheral area and a second part connected to the first part, disposed to surround the hole area, and extending to the peripheral area, the bending area and the pad area;
• a printed circuit board disposed on the substrate in the pad area;
• a first transistor disposed on the substrate in the pad area, wherein a gate electrode of the first transistor is connected to a signal line to receive a signal, a first electrode of the first transistor is connected to the printed circuit board, and a second electrode of the first transistor is connected to the first part of the crack detection line;
• and
• a second transistor disposed on the substrate in the pad area, wherein a gate electrode of the second transistor is connected to the signal line to receive the signal, a first electrode of the second transistor is connected to a constant voltage line for applying a constant voltage, and a second electrode of the second transistor is connected to the first part of the crack detection line.

A display device comprising:

• a substrate comprising a display area on which a plurality of pixels are disposed, a peripheral area surrounding the display area, a hole area positioned inside the display area, a pad area, and a bending area positioned between the peripheral area and the pad area in a plan view;
• a crack detection line comprising a first part disposed on the substrate in the pad area and extending to the bending area and the peripheral area and a second part connected to the first part, disposed to surround the hole area, and extending to the peripheral area, the bending area and the pad area;
• a driving chip disposed on the substrate in the pad area and connected to a signal line to provide a signal to the signal line;
• and
• a plurality of transistors disposed on the substrate in the pad area and connected in series between a constant voltage line for applying a constant voltage and the first part of the crack detection line, wherein each of gate electrodes of the transistors is connected to the signal line to receive the signal.