US 12,379,747 B2
Foldable display device
Eunae Cho, Paju-si (KR); and Seungkyu Lee, Bucheon-si (KR)
Assigned to LG Display Co., Ltd., Seoul (KR)
Filed by LG Display Co., Ltd., Seoul (KR)
Filed on Oct. 30, 2023, as Appl. No. 18/497,359.
Application 18/497,359 is a continuation of application No. 17/890,584, filed on Aug. 18, 2022, granted, now 11,893,912.
Application 17/890,584 is a continuation of application No. 17/109,983, filed on Dec. 2, 2020, granted, now 11,455,915, issued on Sep. 27, 2022.
Claims priority of application No. 10-2019-0163880 (KR), filed on Dec. 10, 2019.
Prior Publication US 2024/0062685 A1, Feb. 22, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G06F 1/16 (2006.01); G09F 9/30 (2006.01); H10K 59/10 (2023.01); H10K 59/40 (2023.01)
CPC G06F 1/1652 (2013.01) [G06F 1/1616 (2013.01); G06F 1/1656 (2013.01); G09F 9/301 (2013.01); H10K 59/10 (2023.02); H10K 59/40 (2023.02)] 20 Claims
OG exemplary drawing
 
1. A foldable display device, comprising:
a display panel including a folding area and non-folding area adjacent to the folding area,
the display panel including a flexible substrate, a light emitting element disposed on the flexible substrate, and an encapsulation layer disposed on the light emitting element;
a back plate disposed under the display panel;
a first support layer disposed under the back plate;
a first adhesive layer between the back plate and the first support layer;
a second adhesive layer between the back plate and the display panel;
an opening pattern included in the first support layer, the opening pattern arranged in a portion corresponding to the folding area;
a cover window for protecting the display panel;
a third adhesive layer between the cover window and the display panel;
a touch sensor disposed on the encapsulation layer; and
a foreign material compensation layer disposed on the touch sensor,
wherein the foreign material compensation layer includes an organic material,
wherein the display panel includes:
a thin film transistor;
a first planarization layer disposed on the thin film transistor;
a second planarization layer sequentially stacked on the first planarization layer;
a light emitting element disposed on the second planarization layer, the light emitting element including an anode, a light emitting unit, and a cathode; and
an intermediate electrode disposed on the first planarization layer, the intermediate electrode coupled to the anode and the thin film transistor.