Abstract: The present disclosure relates to an optical laminate for a flexible display device comprising: a support substrate layer; and a hard coating layer positioned on at least one surface of the support substrate layer and having a thickness of 10 ?m to 250 ?m, wherein the hard coating layer is a polysiloxane containing 70 mol % or more of a repeating unit including an epoxy group-containing functional group; and an elastomeric polymer including polycaprolactone polyol, and wherein the polysiloxane has a number average molecular weight of more than 3,000 and less than 10,000, and a polydispersity Index (PDI) of 1.0 or more and less than 5.0, and a flexible display device including the same.

Abstract: The present invention relates to a cover window for a flexible display device of substrate-less type which simultaneously achieves a physical property balance between flexibility and high hardness even without a substrate film, particularly has almost no damage to the film even by repetitive bending or folding operation, and thus, can be easily applied to bendable, flexible, rollable, or foldable mobile devices, display devices, and the like, and a flexible display device including the same.

Abstract: The present disclosure relates to an optical laminate which hardly has a risk of damaging the film even in repetitive bending or folding operations, and thus can be easily applied to bendable, flexible, rollable or foldable mobile devices, display devices, and the like, to a cover window for flexible display device including the same, and to a flexible display device including the same.

Abstract: This invention relates to an optical laminate comprising: a hard coating layer comprising polysiloxane; a primer layer; and an anti-finger print layer comprising a fluorine-containing compound, and having specific change in water contact angle and specific change in coefficient of friction, before and after conducting friction test on the anti-finger print layer; and a flexible display device including the same.

Abstract: The polyamide-imide block copolymer according to the present invention makes it possible to provide a polyamide-imide film having excellent thermal stability and chemical resistance and, at the same time, having excellent mechanical properties.

Abstract: The present disclosure relates to an optical laminate for a flexible display device comprising: a support substrate layer; and a hard coating layer positioned on at least one surface of the support substrate layer and having a thickness of 10 ?m to 250 ?m, wherein the hard coating layer is a polysiloxane containing 70 mol % or more of a repeating unit including an epoxy group-containing functional group; and an elastomeric polymer including polycaprolactone polyol, and wherein the polysiloxane has a number average molecular weight of more than 3,000 and less than 10,000, and a polydispersity Index (PDI) of 1.0 or more and less than 5.0, and a flexible display device including the same.

Abstract: The present disclosure relates to a poly(amide-imide) copolymer in which at least one of an imide repeating unit and an amide repeating unit is substituted with a specific functional group, and a composition and a polymer film comprising the same.