Flexible display device including bent flexible substrate and bent circuit layer

A display device comprising:

• a substrate that is formed of a plurality of layers stacked together, the plurality of layers including a first organic insulation layer, a first inorganic insulation layer on the first organic insulation layer, a second organic insulation layer on the first inorganic insulation layer, and a second inorganic insulation layer on the second organic insulation layer;
• a circuit layer that is stacked on the second inorganic insulation layer so as to include a circuit of a plurality of unit pixels forming an image, the circuit layer including a semiconductor layer in contact with the second inorganic insulation layer;
• and
• a sealing layer that covers and seals the circuit layer, wherein
• the circuit layer includes a display element area in which a plurality of pixel electrodes corresponding to the unit pixels and a self-luminous element layer are provided, and a peripheral area that has a wiring to the display element area and a terminal and is at least partially bent,
• the substrate includes a first area that overlaps the display element area of the circuit layer and a second area that overlaps the peripheral area and is at least partially bent,
• the first inorganic insulation layer has a bottom surface adhered to the first organic insulation layer in the first area and the second area, and
• the first inorganic insulation layer has a top surface adhered to the second organic insulation layer in the first area but not in the second area.