Flexible display panel, touch display module, and display device

A flexible display panel, comprising:

• a display substrate and a spacer arranged on a side of the display substrate away from a display side, wherein the spacer comprises a first side surface facing the display side of the display substrate and a second side surface away from the display side of the display substrate;
• the display substrate comprises an arc surface region close to an edge and a panel bending pad bent to the side of the display substrate away from the display side, the panel bending pad is fixed on the second side surface of the spacer;
• and
• a shape of the first side surface of the spacer is consistent with a shape of a portion of the display substrate facing the first side surface of the spacer, and a portion of the second side surface of the spacer corresponding to the arc surface region is a surface comprising a plane or a plurality of planes,
• wherein the panel bending pad is attached to the second side surface of the spacer, and
• wherein the flexible display panel further comprises:
• a back film attached to the side of the display substrate away from the display side, wherein the second side surface of the spacer is adhered to the back film in the panel bending pad by an adhesive.