US 11,871,604 B2
Cover window, method of manufacturing the same, and display device having the same
Byunghoon Kang, Hwaseong-si (KR); Seungho Kim, Asan-si (KR); Gyuin Shim, Yongin-si (KR); and Seung Kim, Seongnam-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Gyeonggi-do (KR)
Filed by Samsung Display Co., Ltd., Yongin-Si (KR)
Filed on Apr. 6, 2021, as Appl. No. 17/223,358.
Claims priority of application No. 10-2020-0088049 (KR), filed on Jul. 16, 2020.
Prior Publication US 2022/0022334 A1, Jan. 20, 2022
Int. Cl. C03C 17/32 (2006.01); B32B 7/12 (2006.01); B32B 17/06 (2006.01); H01L 51/52 (2006.01); H05K 5/03 (2006.01); H05K 5/00 (2006.01); H10K 50/844 (2023.01); H10K 77/10 (2023.01); H10K 102/00 (2023.01)
CPC H10K 50/844 (2023.02) [B32B 7/12 (2013.01); B32B 17/06 (2013.01); C03C 17/324 (2013.01); C03C 17/328 (2013.01); H05K 5/0017 (2013.01); B32B 2255/26 (2013.01); B32B 2255/28 (2013.01); B32B 2307/51 (2013.01); B32B 2457/20 (2013.01); H10K 77/111 (2023.02); H10K 2102/311 (2023.02)] 17 Claims
OG exemplary drawing
 
1. A cover window comprising:
a base layer comprising a bending portion bent about a bending axis extending in one direction, a first flat portion, and a second flat portion spaced apart from the first flat portion with the bending portion interposed therebetween in a direction crossing the one direction and facing each other; and
a first coating portion disposed on the bending portion of the base layer and having a first modulus less than a modulus of the base layer,
wherein a thickness of the first coating portion is less than a thickness of the base layer, and the thickness of the first coating portion is equal to or greater than about 50 μm and equal to or less than about 300 μm.
 
14. A display device comprising:
a display panel comprising a bending area bent about a bending axis extending in one direction, a first flat area, and a second flat area spaced apart from the first flat area with the bending area interposed therebetween in a direction crossing the one direction and facing each other;
a cover window disposed on the display panel; and
an adhesive layer disposed between the display panel and the cover window, and
the cover window comprising:
a base layer comprising a first flat portion corresponding to the first flat area, a bending portion corresponding to the bending area, and a second flat portion corresponding to the second flat area; and
a first coating portion disposed on the bending portion of the base layer and having a first modulus less than a modulus of the base layer,
wherein a thickness of the first coating portion is less than a thickness of the base layer, and the thickness of the first coating portion is equal to or greater than about 50 μm and equal to or less than about 300 μm.