Flexible display panel and fabricating method thereof, flexible display apparatus

A method of fabricating a flexible display panel, comprising:

• forming a photosensitive layer comprising at least one azo group on a carrier substrate;
• forming a flexible substrate on the photosensitive layer;
• forming a barrier layer and a display device sequentially on the flexible substrate;
• irradiating the photosensitive layer with ultraviolet light;
• and
• peeling off the flexible substrate from the carrier substrate;
• wherein the flexible substrate is directly formed on the photosensitive layer;
• the barrier layer is formed between the flexible substrate layer and the display device;
• and
• the photosensitive layer comprising the at least one azo group further comprises a phenyl group, the phenyl group further comprises a derivative group, and the derivative group comprises an alkyl group or an aromatic heterocyclic group.