	US 11,840,611 B2
	Polyamide-based composite film and display device comprising same
Yun Hee Seo, Chungcheongnam-do (KR); Sang Hun Choi, Gyeonggi-do (KR); Jin Woo Lee, Gyeonggi-do (KR); Jung Hee Ki, Gyeonggi-do (KR); Dae Seong Oh, Gyeonggi-do (KR); Han Jun Kim, Gyeonggi-do (KR); and Sun Hwan Kim, Gyeonggi-do (KR)
Assigned to SK Microworks Solutions Co., LTD., Chungcheongman-do (KR); and SK Microworks Co., LTD., Gyeonggi-do Republic of (KR)
Filed by SK microworks Co., Ltd., Gyeonggi-do (KR); and SK microworks solutions Co., Ltd., Chungcheongnam-do (KR)
Filed on Aug. 20, 2021, as Appl. No. 17/407,779.
Claims priority of application No. 10-2020-0112924 (KR), filed on Sep. 4, 2020.
Prior Publication US 2022/0073689 A1, Mar. 10, 2022
Int. Cl. C08J 5/18 (2006.01); C08G 69/28 (2006.01); C08K 3/36 (2006.01)

CPC C08J 5/18 (2013.01) [C08G 69/28 (2013.01); C08K 3/36 (2013.01); C08J 2377/10 (2013.01)]

11 Claims

1. A polyamide-based composite film, which comprises a base film comprising a polyamide-based polymer; and a functional layer disposed on the base film, and which has an average glossiness (GL_AVG) of 90 to 130, which is an average value of the glossiness at 20° (GL₂₀), a glossiness at 60° (GL₆₀), and the glossiness at 85° (GL₈₅), wherein the glossiness at 60° (GL₆₀) is glossiness measured according to the JIS Z 8741-1997 standard with the polyamide-based composite film at an incident angle of 60°,

wherein a glossiness control value of the polyamide-based composite film according to the following Equation 1 is 0 or more:

Glossiness control value=glossiness at 85°(GL₈₅)−glossiness at 20°(GL₂₀) [Equation 1]

wherein, in Equation 1, the glossiness at 85° (GL₈₅) is glossiness measured according to the JIS Z 8741-1997 standard with the polyamide-based composite film at an incident angle of and the glossiness at 20° (GL₂₀) is glossiness measured according to the JIS Z 8741-1997 standard with the polyamide-based composite film at an incident angle of 20°.