Flexible display device and method for manufacturing thereof

A method of manufacturing a flexible display device, the method comprising:

• forming a flexible substrate on a base substrate;
• forming a display device layer including a first area to display an image and a second area not to display an image on a first surface of the flexible substrate, the display device layer having a width and a length, and including an adhesive layer that is included in the first area and extends along a lateral surface of the display device layer;
• forming an encapsulation layer attached to the display device layer by the adhesive layer;
• and
• forming a deformation-preventing portion on a second surface of the flexible substrate,
• wherein the deformation-preventing portion is overlapped with the second area,
• wherein the second surface of the flexible substrate corresponding to the first area is exposed, and
• wherein the first area of the display device layer includes a buffer layer, a gate insulating layer on the buffer layer, a passivation layer on the gate insulating layer, a first planarization layer on the passivation layer, and a second planarization layer between the first planarization layer and the adhesive layer, and the second area of the display device layer includes the buffer layer, the gate insulating layer, and the passivation layer.

A flexible display device comprising:

• a flexible substrate having a first surface and a second surface;
• a display device layer provided on the first surface of the flexible substrate, the display device layer having a width and a length, and including an adhesive layer that extends along a lateral surface of the display device layer;
• an encapsulation layer attached to the display device layer by the adhesive layer;
• and
• a deformation-preventing portion provided on a portion of the second surface of the flexible substrate,
• wherein the deformation-preventing portion braces the portion of the second surface of the flexible substrate from being deformed,
• wherein the second surface of the flexible substrate corresponding to the display device layer is exposed,
• wherein the display device layer includes a first area to display an image and a second area not to display an image, and the adhesive layer is included in the first area, and
• wherein the first area of the display device layer includes a buffer layer, a gate insulating layer on the buffer layer, a passivation layer on the gate insulating layer, a first planarization layer on the passivation layer, and a second planarization layer between the first planarization layer and the adhesive layer, and the second area of the display device layer includes the buffer layer, the gate insulating layer, and the passivation layer.