US 11,871,603 B2
Display device and carrier film
Kicheol Song, Suwon-si (KR); Youngmoon Kim, Asan-si (KR); and Nari Ahn, Seongnam-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Gyeonggi-Do (KR)
Filed by Samsung Display Co., Ltd., Yongin-Si (KR)
Filed on Sep. 4, 2020, as Appl. No. 17/012,608.
Claims priority of application No. 10-2019-0172174 (KR), filed on Dec. 20, 2019.
Prior Publication US 2021/0193962 A1, Jun. 24, 2021
Int. Cl. H01L 51/52 (2006.01); H10K 50/844 (2023.01); B32B 7/12 (2006.01); B32B 27/08 (2006.01); B32B 27/28 (2006.01); B32B 27/36 (2006.01); B32B 27/34 (2006.01); B32B 7/022 (2019.01); B32B 7/02 (2019.01); H10K 77/10 (2023.01); H10K 59/12 (2023.01); H10K 102/00 (2023.01)
CPC H10K 50/844 (2023.02) [B32B 7/02 (2013.01); B32B 7/022 (2019.01); B32B 7/12 (2013.01); B32B 27/08 (2013.01); B32B 27/281 (2013.01); B32B 27/34 (2013.01); B32B 27/36 (2013.01); H10K 77/111 (2023.02); B32B 2307/51 (2013.01); B32B 2307/54 (2013.01); B32B 2457/20 (2013.01); H10K 59/12 (2023.02); H10K 2102/311 (2023.02)] 11 Claims
OG exemplary drawing
 
1. A display device comprising:
a display panel;
a panel protective film disposed below the display panel; and
a first adhesive layer disposed between the display panel and the panel protective film,
wherein under a setting in which a test speed of a tensile test of the panel protective film is 5 millimeters per minute, and Young's modulus of the panel protective film is measured in a range of strain in which strain of the panel protective film is 0.05 percent to 0.5 percent, the panel protective film has the Young's modulus of 4324 megapascals to 4792 megapascals at 25 degrees Celsius, and has the Young's modulus of 3646 megapascals to 3924 megapascals at 85 degrees Celsius so that a deformation in a folding area of the display device is reduced,
wherein, at 210 degrees Celsius, stress of a yielding point of the panel protective film is 29.97 megapascals to 31.34 megapascals, and strain of the yielding point of the panel protective film is 1.19 percent to 1.26 percent.