Patent ID: 11958987
Assignee: LG CHEM, LTD.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C  B  G  H  Y | IPC B  C  H

Claim 0:
1. A cover window for a flexible display device, comprising a polymer substrate comprising a polyamide resin; and a hard coating layer formed on at least one surface of the polymer substrate,
wherein the polyamide resin comprises a first polyamide segment and a second polyamide segment, each polymide segment containing a benzene-1,3-dicarbonyl group and a benzene-1,4-dicarbonyl group in a different molar ratio,
the polymer substrate has a yellow index of 4.00 or less as measured in accordance with STM E 313, and
an elastic modulus of 4 to 9 GPa as measured at a strain rate of 12.5 mm/min in accordance with ISO 527-3.