Window cover film and flexible display panel including the same

A window cover film comprising a transparent film and a hard coating layer formed on one surface of the transparent film, the window cover film having a micro flexural modulus of 15 to 40 GPa and a micro flexural strength of 200 MPa or more, wherein

• the micro flexural modulus and the micro flexural strength refer to a modulus of elasticity and a strength measured as follows:
• a film having a width of 10 mm, a length of 20 mm and a thickness of 20 to 100 μm is placed between a lower anvil and an upper anvil of a micro 3-point bend fixture including two lower anvils spaced at an interval of 4 mm and one upper anvil having a radius of 0.25 mm, a preload of 0.2 N is applied at a rate of 1 mm/min using a load cell of 50 N, and then the film is pressed at a rate of 1 mm/min until a flexural strain of 2% is achieved, the modulus of elasticity and the strength being measured from a stress applied thereto,
• wherein the transparent film is a polyimide-based film having a block polyamideimide structure comprising a fluorine atom and an aliphatic cyclic ring structure, and
• wherein the hard coating layer includes an alicyclic epoxidized silsesquioxane-based compound.