US 11,893,912 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 Aug. 18, 2022, as Appl. No. 17/890,584.
Application 17/890,584 is a continuation of application No. 17/109,983, filed on Dec. 2, 2020, granted, now 11,455,915.
Prior Publication US 2023/0021348 A1, Jan. 26, 2023
Int. Cl. G06F 1/16 (2006.01); G09F 9/30 (2006.01); H10K 59/40 (2023.01)
CPC G09F 9/301 (2013.01) [G06F 1/1616 (2013.01); G06F 1/1656 (2013.01); H10K 59/40 (2023.02)] 18 Claims
OG exemplary drawing
 
1. A foldable display device, comprising:
a display panel including a folding area and non-folding areas on both sides of the folding area;
a back plate disposed under the display panel;
a first support layer disposed under the back plate; and
an opening pattern arranged in a portion corresponding to the folding area, the opening pattern extending through the first support layer, and
wherein the display panel includes:
a flexible substrate;
a thin film transistor disposed on the flexible substrate, the thin film transistor including a gate electrode, source electrode, a drain electrode, and a semiconductor layer;
a first planarization layer 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 on the first planarization layer, the intermediate electrode coupled to the drain electrode of the thin film transistor through a contact hole formed in the first planarization layer and coupled to the anode through a contact hole in the second planarization layer.