US 11,854,442 B2
Cover window and display device including the same
Byungseo Yoon, Yongin-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Gyeonggi-Do (KR)
Filed by Samsung Display Co., Ltd., Yongin-si (KR)
Filed on Oct. 17, 2022, as Appl. No. 17/967,246.
Claims priority of application No. 10-2022-0011043 (KR), filed on Jan. 25, 2022.
Prior Publication US 2023/0237936 A1, Jul. 27, 2023
Int. Cl. G06F 3/041 (2006.01); G09F 9/30 (2006.01); G02B 1/14 (2015.01); H05K 5/03 (2006.01); G06F 1/16 (2006.01); H10K 50/844 (2023.01); H10K 59/40 (2023.01)
CPC G09F 9/301 (2013.01) [G02B 1/14 (2015.01); G06F 1/1652 (2013.01); H05K 5/03 (2013.01); H10K 50/844 (2023.02); H10K 59/40 (2023.02)] 20 Claims
OG exemplary drawing
 
1. A cover window comprising:
glass comprising a folding portion of a folding area, a planar portion, and a boundary portion between the folding portion and the planar portion, the boundary portion having a thickness which gradually becomes greater than a thickness of the folding portion as farther from the folding portion and having inclination with respect to the planar portion; and
a filler disposed on a first surface of the glass,
wherein the inclination is an acute angle defined when a virtual line which is parallel to the planar portion and meets the folding portion meets the boundary portion, and is less than 1°, and
wherein a difference between a refractive index of the filler and a refractive index of the glass is within about 0.07.