Display device and manufacturing method thereof

A display device, comprising:

• a flexible substrate including a display area and a peripheral area;
• wherein the peripheral area includes a bending area and a non-bending area, the flexible substrate having an outside surface that faces away from itself when in a bent state and an inside surface that faces itself when in the bent state;
• a pixel portion positioned on the display area, on the outside surface of the flexible substrate;
• a first protective mask overlapping the display area of the flexible substrate, and a second protective mask positioned on the non-bending area, on the inside sur ace of the flexible substrate;
• a driving circuit portion positioned on the non-bending, area, on the outside surface of the flexible substrate;
• and
• a wire portion connecting the pixel portion and the driving circuit portion and to-be positioned the bending area, on the outside surface of the flexible substrate,
• wherein a thickness of the bending area of the flexible substrate is thinner than a thickness of the display area and a thickness of the non-bending area,
• wherein at a first border between the display area and the bending area of the flexible substrate and at a second border between the bending area and the non-bending area of the flexible substrate, a lateral surface of the inside surface of the flexible substrate has a reverse tapered shape where the thickness of the flexible substrate varies gradually, and
• wherein an edge of the first protective mask is aligned with the first border, and an edge of the second protective mask is aligned with the second border, and
• wherein the first protective mask and the second protective mask do not overlap a portion of the flexible substrate having the reverse tapered shape.