Flexible display device

A flexible display device, comprising:

• a flexible display panel;
• a flexible printed circuit board;
• and
• a reel,
• wherein the flexible printed circuit board comprises a first binding area and an element area,
• an integrated circuit is provided in the element area,
• and a first pad is provided in the first binding area,
• wherein the flexible display panel comprises a display area and a second binding area,
• a second pad is provided in the second binding area,
• and the first pad of the first binding area is bound to the second pad of the second binding area,
• wherein the reel has a cavity,
• and the reel comprises an inner surface facing towards the cavity and an outer surface facing away from the cavity,
• the inner surface comprises a first surface, and the first surface is flat,
• and wherein the element area of the flexible printed circuit board is provided on the first surface,
• and the display area of the flexible display panel is rollable along the outer surface of the reel,
• wherein a mainboard is provided in the cavity of the reel,
• wherein the flexible printed circuit board further comprises a connection area electrically connected to the mainboard,
• wherein the reel further comprises a first fixing recess and a second fixing recess,
• wherein an opening of the first fixing recess and an opening of the second fixing recess both face towards the cavity,
• wherein one end of the mainboard is provided in the first fixing recess,
• and another end of the mainboard is provided in the second fixing recess,
• and wherein an angle between a plane of the mainboard and the first surface is greater than or equal to 90°.