US 12,379,620 B2
Flexible display device
Jin Kyu Kim, Cheongju-si (KR); Mi-Ae Park, Hwaseong-si (KR); Sung Ku Kang, Suwon-si (KR); and Sáng Wol Lee, Yongin-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed by SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed on May 7, 2021, as Appl. No. 17/314,508.
Application 17/314,508 is a division of application No. 15/446,875, filed on Mar. 1, 2017, granted, now 11,024,828.
Claims priority of application No. 10-2016-0069466 (KR), filed on Jun. 3, 2016.
Prior Publication US 2021/0280828 A1, Sep. 9, 2021
Int. Cl. H10K 59/13 (2023.01); G02F 1/1333 (2006.01); H10K 50/844 (2023.01); H10K 59/80 (2023.01); H10K 77/10 (2023.01); G02F 1/1345 (2006.01); G02F 1/1362 (2006.01); H10K 59/131 (2023.01)
CPC G02F 1/133305 (2013.01) [H10K 50/844 (2023.02); H10K 59/873 (2023.02); H10K 77/111 (2023.02); G02F 1/133388 (2021.01); G02F 1/13452 (2013.01); G02F 1/136254 (2021.01); G02F 2201/50 (2013.01); G02F 2202/28 (2013.01); H01L 2224/73204 (2013.01); H10K 59/131 (2023.02); Y02E 10/549 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A display device comprising:
a substrate including a first region, a second region, and a bending area disposed between the first region and the second region;
a display unit disposed over the second region of the substrate;
a first protection film disposed below the first region of the substrate; and
a second protection film disposed below the second region of the substrate,
wherein the substrate is bent in the bending area, and the first protection film and the second protection film are disposed on either side of the bending area,
wherein a driving integrated circuit chip is disposed above the first region of the substrate and is completely overlapped by the first protection film and does not overlap the display unit in a direction perpendicular to the substrate when the substrate is in an unbent state,
wherein a tensile modulus of the first protection film is larger than that of the second protection film, and
wherein when the substrate is in the unbent state, the first protection film and the second protection film do not overlap in the direction perpendicular to the substrate.