US 11,917,782 B2
Protective film, electronic device having same, and method for attaching protection film
Heonjung Shin, Hwaseong-si (KR); Kyungtae Kim, Asan-si (KR); Boa Kim, Icheon-si (KR); and Hyunjoon Oh, Seongnam-si (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Filed by Samsung Display Co., Ltd., Yongin-si (KR)
Filed on Sep. 23, 2022, as Appl. No. 17/934,872.
Application 17/934,872 is a continuation of application No. 16/567,847, filed on Sep. 11, 2019, granted, now 11,457,536.
Claims priority of application No. 10-2018-0143760 (KR), filed on Nov. 20, 2018.
Prior Publication US 2023/0017504 A1, Jan. 19, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. B32B 37/12 (2006.01); B29C 63/02 (2006.01); C09J 7/22 (2018.01); C09J 7/40 (2018.01); G01N 3/20 (2006.01); G06F 1/16 (2006.01); H04M 1/02 (2006.01); H04M 1/18 (2006.01); H05K 5/00 (2006.01); H05K 5/03 (2006.01)
CPC H05K 5/03 (2013.01) [B29C 63/02 (2013.01); B32B 37/12 (2013.01); G01N 3/20 (2013.01); G06F 1/1652 (2013.01); H04M 1/0268 (2013.01); H04M 1/185 (2013.01); H05K 5/0017 (2013.01); B32B 2457/00 (2013.01); C09J 7/22 (2018.01); C09J 7/40 (2018.01); Y10T 428/14 (2015.01)] 20 Claims
OG exemplary drawing
 
1. A protective film comprising:
a protective base film having a first modulus of 1,000 MPa or less at a first temperature and a second modulus of 15 MPa or more at a second temperature 80° C. higher than the first temperature; and
a functional layer on the protective base film,
wherein the first modulus is higher than the second modulus.