US 12,352,928 B2
Cover window and display apparatus including the same
Dongsung Lee, Yongin-si (KR); Hyunseung Seo, Yongin-si (KR); Hyunkyung Yun, Yongin-si (KR); and Jihyun Ko, Yongin-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed by SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed on Apr. 4, 2023, as Appl. No. 18/295,562.
Application 18/295,562 is a division of application No. 17/237,983, filed on Apr. 22, 2021, granted, now 11,644,599.
Claims priority of application No. 10-2020-0124642 (KR), filed on Sep. 25, 2020.
Prior Publication US 2023/0244005 A1, Aug. 3, 2023
Int. Cl. G02B 1/14 (2015.01); B32B 7/12 (2006.01); B32B 27/30 (2006.01); G06F 3/044 (2006.01)
CPC G02B 1/14 (2015.01) [B32B 7/12 (2013.01); B32B 27/304 (2013.01); B32B 27/308 (2013.01); G06F 3/0445 (2019.05); G06F 3/0446 (2019.05); B32B 2255/10 (2013.01); B32B 2255/26 (2013.01); B32B 2270/00 (2013.01); B32B 2457/20 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A cover window comprising:
a window substrate having a first hardness and comprising polyvinylidene fluoride (PVDF); and
a hard coating layer on at least one surface of the window substrate and having a second hardness which is greater than that of the window substrate,
wherein the window substrate comprises a copolymer of a first polymer resin and the PVDF, and
wherein a ratio of the first polymer resin and the PVDF is such that a relative permittivity of the window substrate has a value from about 3 to about 6.