US 12,377,637 B2
Cover window, display device, and cover window manufacturing method
Yong Kyu Kang, Hwaseong-si (KR); and Hyun Seung Seo, Suwon-si (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Filed by Samsung Display Co., Ltd., Yongin-si (KR)
Filed on Oct. 29, 2021, as Appl. No. 17/452,902.
Claims priority of application No. 10-2020-0148520 (KR), filed on Nov. 9, 2020.
Prior Publication US 2022/0149326 A1, May 12, 2022
Int. Cl. H01L 51/52 (2006.01); B32B 17/10 (2006.01); B32B 27/06 (2006.01); B32B 27/08 (2006.01); B32B 27/36 (2006.01); H10K 50/844 (2023.01); H10K 59/80 (2023.01)
CPC B32B 17/10 (2013.01) [B32B 27/08 (2013.01); B32B 27/365 (2013.01); H10K 50/844 (2023.02); B32B 2255/10 (2013.01); B32B 2457/206 (2013.01); H10K 59/873 (2023.02)] 19 Claims
OG exemplary drawing
 
1. A cover window comprising:
a window substrate;
a stress control layer on the window substrate and comprising a ceramic;
a hard coating layer on the stress control layer and having a pencil hardness greater than 6B; and
a functional polymer layer between the window substrate and the stress control layer or between the stress control layer and the hard coating layer, the functional polymer layer being configured to reduce scattering of light, to absorb an impact, to reduce indentation, or to reduce glare, and a thickness of the functional polymer layer being less than a thickness of the window substrate.
 
12. A display device comprising:
a display panel; and
a cover window on the display panel to protect the display panel,
wherein the cover window comprises:
a window substrate;
a stress control layer on the window substrate and comprising a ceramic;
a hard coating layer on the stress control layer and having a pencil hardness greater than 6B; and
a functional polymer layer between the window substrate and the stress control layer or between the stress control layer and the hard coating layer, the functional polymer layer being configured to reduce scattering of light at the window substrate, to absorb an impact, to reduce indentation, or to reduce glare, and a thickness of the functional polymer layer being less than a thickness of the window substrate.