US 11,873,245 B2
Method of manufacturing window for a display device
Dong-Sung Lee, Hwaseong-si (KR); Hyunseung Seo, Gwacheon-si (KR); Hui yeon Shon, Seongnam-si (KR); Hyunkyung Yun, Namyangju-si (KR); Changmoo Lee, Suwon-si (KR); Jonghwan Cho, Ansan-si (KR); Yongkyu Kang, Hwaseong-si (KR); and Jihyun Ko, Suwon-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed by Samsung Display Co., Ltd., Yongin-Si (KR)
Filed on Oct. 22, 2020, as Appl. No. 17/077,468.
Claims priority of application No. 10-2019-0131826 (KR), filed on Oct. 23, 2019.
Prior Publication US 2021/0122669 A1, Apr. 29, 2021
Int. Cl. C03C 17/32 (2006.01); C03C 17/22 (2006.01); C03C 23/00 (2006.01); C03C 17/34 (2006.01)
CPC C03C 17/326 (2013.01) [C03C 17/22 (2013.01); C03C 17/3405 (2013.01); C03C 23/002 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A method of manufacturing a window, the method comprising:
preparing a base material layer;
forming a first hard coating layer on the base material layer comprising coating a first solution including acrylic and epoxy on the base material layer and hardening the first solution in a first environment having a first oxygen concentration, wherein a composition ratio of acrylic to epoxy in the first hard coating layer is about 7:3; and
forming a second hard coating layer on the first hard coating layer,
wherein the forming of the second hard coating layer is performed in a second environment having an oxygen concentration that is less than the first oxygen concentration,
wherein the oxygen concentration of the second environment is in a range of about 0.01% to about 0.1%,
wherein a thickness of the first hard coating layer is in a range of about 30 μm to about 50 μm,
wherein a thickness of the second hard coating layer is in a range of about 5 μm to about 7 μm, and
wherein the second hard coating layer has a hardening rate of about 75% to about 85%, a hardness of about 450 MPa to about 550 MPa, and a surface contact angle of about 100 degrees to about 120 degrees.