US 12,449,837 B2
Foldable display apparatus
Seonghyeon Lee, Busan (KR); Minwoo Jeon, Busan (KR); Jonggun Lee, Paju-si (KR); Suk Choi, Hwaseong-si (KR); and Jungmin Lee, Seoul (KR)
Assigned to LG Display Co., Ltd., Seoul (KR)
Filed by LG Display Co., Ltd., Seoul (KR)
Filed on Jun. 7, 2022, as Appl. No. 17/834,730.
Claims priority of application No. 10-2021-0074115 (KR), filed on Jun. 8, 2021.
Prior Publication US 2022/0390985 A1, Dec. 8, 2022
Int. Cl. G06F 1/16 (2006.01); B32B 3/02 (2006.01); B32B 7/022 (2019.01); B32B 25/20 (2006.01); B32B 27/38 (2006.01); B32B 27/40 (2006.01)
CPC G06F 1/1616 (2013.01) [B32B 3/02 (2013.01); B32B 7/022 (2019.01); G06F 1/1656 (2013.01); B32B 25/20 (2013.01); B32B 27/38 (2013.01); B32B 27/40 (2013.01); B32B 2250/03 (2013.01); B32B 2250/44 (2013.01); B32B 2307/51 (2013.01); B32B 2457/20 (2013.01); Y10T 428/2457 (2015.01); Y10T 428/24777 (2015.01)] 19 Claims
OG exemplary drawing
 
1. A foldable display apparatus, comprising:
a display panel;
a cover window on the display panel; and
a first layer between the display panel and the cover window, the first layer having an elastic storage modulus less than an elastic storage modulus of the cover window,
wherein the display panel includes a display area, a non-display area at a periphery of the display area, and a foldable area overlapping a portion of the display area and a portion of the non-display area,
wherein the first layer includes a core layer and a protective layer surrounding side surfaces of the core layer, and
wherein the protective layer is absent from the side surfaces of the core layer in an area of the core layer adjacent to a folding axis of the foldable area.
 
12. A foldable display apparatus, comprising:
a display panel including a display area, a non-display area at a periphery of the display area, and a foldable area overlapping a portion of the display area and a portion of the non-display area;
a cover window on the display panel;
a protective part between the display panel and the cover window;
a first layer at a first surface of the protective part; and
a second layer at a second surface of the protective part opposite to the first surface of the protective part,
wherein the first surface of the protective part includes a first recess overlapping a folding axis of the foldable area of the display panel, a center of the first recess coincides with the folding axis, and the first recess has a shape that is horizontally symmetrical with respect to the folding axis, and
wherein the second surface of the protective part includes two second recesses, the second recesses spaced apart from each other on both sides of the folding axis by the same distance from the folding axis, and each of the second recesses partially overlaps with the first recess.