Flexible display device

A flexible display device comprising:

• a display panel comprising a bending area bendable about a bending axis extending in a first direction, and a first non-bending area and a second non-bending area arranged to be spaced apart from each other in a second direction crossing the first direction with the bending area between the first non-bending area and the second non-bending area;
• an outer member over a first surface of the display panel;
• and
• a stress control member between the display panel and the outer member, and comprising a first control area overlapping with the bending area and a second control area and a third control area overlapping with the first non-bending area and the second non-bending area, respectively, such that the first control area is between the second control area and the third control area,
• wherein a maximum thickness of the first control area is less than a thickness of an end of the second control area spaced apart from the first control area in the second direction and a thickness of an end of the third control area spaced apart from the first control area in the second direction.