Flexible display panel and display device

A display device, comprising:

• a flexible display panel, wherein
• the flexible display panel comprises a flexible substrate and an inorganic film layer located on the flexible substrate,
• the inorganic film layer comprises a first portion and a second portion, the first portion is connected with the second portion, the first portion has a first thickness T1, the second portion has a second thickness T2, and T1<T2, and
• the first portion comprises at least one first sub-portion and at least one second sub-portion, the first sub-portion is connected with the second sub-portion at a boundary line extending in a first direction, a length of an end of the first sub-portion at the boundary line in first direction is the same as a length of an end of the second sub-portion at the boundary line in the first direction such that the end of the first sub-portion smoothly joins with the end of the second sub-portion at the boundary line, and from the boundary line, a dimension of the second sub-portion in the first direction gradually changes in a direction away from the first sub-portion.