| abstract |
The protective film according to the embodiment includes a polyester resin in which diol and dicarboxylic acid containing 1,4-cyclohexanedimethanol are polymerized, and since the difference in modulus at room temperature for two perpendicular directions in the plane is small, frequent Whitening and cracking can be significantly suppressed even when bending or folding. Due to these characteristics, the protective film can be applied to a flexible display device. |