US 12,319,613 B2
Display apparatus and method of manufacturing the same
Hoikwan Lee, Yongin-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed by Samsung Display Co., Ltd., Yongin-si (KR)
Filed on Jul. 5, 2023, as Appl. No. 18/347,150.
Application 18/347,150 is a continuation of application No. 17/142,812, filed on Jan. 6, 2021, granted, now 11,711,937.
Claims priority of application No. 10-2020-0081068 (KR), filed on Jul. 1, 2020.
Prior Publication US 2023/0345758 A1, Oct. 26, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. C03C 21/00 (2006.01); H10K 50/84 (2023.01); H10K 50/86 (2023.01); H10K 59/12 (2023.01); H10K 59/40 (2023.01); H10K 71/00 (2023.01); H10K 77/10 (2023.01); H10K 102/00 (2023.01)
CPC C03C 21/002 (2013.01) [H10K 50/841 (2023.02); H10K 50/86 (2023.02); H10K 59/12 (2023.02); H10K 59/40 (2023.02); H10K 71/00 (2023.02); H10K 77/111 (2023.02); H10K 59/1201 (2023.02); H10K 2102/311 (2023.02); H10K 2102/351 (2023.02)] 31 Claims
OG exemplary drawing
 
1. A display apparatus comprising:
a display panel comprising pixels; and
a cover window disposed on the display panel,
wherein the cover window comprises:
a flat portion having a first thickness; and
a folding portion spaced apart from the flat portion, the folding portion having a second thickness that is less than the first thickness of the flat portion, the folding portion extending from the flat portion,
a thickness of the cover window decreases from the flat portion to the folding portion,
a first stress profile of the flat portion of the cover window that is a stress change along a depth direction from a surface of the flat portion of the cover window is different from a second stress profile of the folding portion of the cover window that is a stress change along a depth direction from a surface of the folding portion of the cover window, the first stress profile representing an amount of compressive or tensile stress stored in the cover window at particular locations, and
a surface compressive stress on the surface of the flat portion of the cover window is different from a surface compressive stress on the surface of the folding portion of the cover window.