US 12,119,859 B2
Cover window, manufacturing method of cover window, and display device including cover window
Byung Hoon Kang, Seoul (KR); Byeong-Beom Kim, Anyang-si (KR); Seung Ho Kim, Anyang-si (KR); Cheol Min Park, Hwaseong-si (KR); Chang Moo Lee, Suwon-si (KR); and Hoi Kwan Lee, Suwon-si (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Filed by SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed on Sep. 21, 2021, as Appl. No. 17/481,021.
Claims priority of application No. 10-2021-0044832 (KR), filed on Apr. 6, 2021.
Prior Publication US 2022/0321159 A1, Oct. 6, 2022
Int. Cl. H04B 1/3888 (2015.01); B32B 17/10 (2006.01); G06F 1/16 (2006.01); C03C 23/00 (2006.01)
CPC H04B 1/3888 (2013.01) [B32B 17/10174 (2013.01); G06F 1/1652 (2013.01); C03C 23/009 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A cover window comprising a folding portion and a non-folding portion,
wherein the folding portion comprises an inside surface that is compressed when folding and an outside surface that is stretched when folding,
the folding portion comprises a first layer adjacent to the outside surface, a second layer adjacent to the inside surface, and a third layer between the first layer and the second layer,
the folding portion and the non-folding portion comprise at least one metal ion,
a concentration of the metal ion included in the second layer is higher than a concentration of the metal ion included in the first layer, and
the first layer comprises a plurality of depletion regions.