US 12,408,536 B2
Display apparatus having a substrate hole and method for forming the same
Jeong-Oh Kim, Goyang-si (KR); and Jei-Hyun Lee, Goyang-si (KR)
Assigned to LG Display Co., Ltd., Seoul (KR)
Filed by LG Display Co., Ltd., Seoul (KR)
Filed on Dec. 28, 2020, as Appl. No. 17/135,450.
Claims priority of application No. 10-2019-0180185 (KR), filed on Dec. 31, 2019.
Prior Publication US 2021/0202569 A1, Jul. 1, 2021
Int. Cl. H10K 59/65 (2023.01); H10K 59/122 (2023.01); H10K 59/123 (2023.01); H10K 59/131 (2023.01); H10K 59/80 (2023.01)
CPC H10K 59/65 (2023.02) [H10K 59/122 (2023.02); H10K 59/123 (2023.02); H10K 59/131 (2023.02); H10K 59/8723 (2023.02); H10K 59/873 (2023.02)] 16 Claims
OG exemplary drawing
 
1. A display apparatus comprising:
a substrate hole penetrating a device substrate;
a light-emitting device on the device substrate, the light-emitting device spaced away from the substrate hole;
a plurality of inorganic insulating layers between the device substrate and the light-emitting device;
a separating device disposed laterally between the plurality of inorganic insulating layers and the substrate hole;
a dam on the plurality of inorganic insulating layers, the dam disposed laterally between the light-emitting device and the separating device, the dam including a first metal pattern and a first insulating cap disposed on the first metal pattern; and
a first over-coat layer between the plurality of inorganic insulating layers and the light-emitting device, wherein the dam, the separating device and the substrate hole are laterally spaced apart from the first over-coat layer, and
a driving circuit a transistor including at least one thin film transistor and an intermediate electrode which electrically connects the light-emitting device to the driving circuit through a first contact hole penetrating the first over-coat layer,
wherein the plurality of inorganic insulating layers includes at least one gate insulating layer of the at least one transistor,
wherein the separating device includes a second metal pattern being in direct contact with the device substrate, and a second insulating cap disposed on the second metal pattern,
wherein a side surface of each of the plurality of inorganic insulating layers toward the separating device has a gentler slope than a side surface of the separating device and a side surface of the dam, such that an angle between a side surface of the plurality of inorganic insulating layers toward the separating device and an upper surface of the device substrate is smaller than an angle between a side surface of the first insulating cap of the dam toward the separating device and the upper surface of the device substrate and an angle between a side surface of the second insulating cap of the separating device toward the dam and the upper surface of the device substrate, and
wherein the first metal pattern and the second metal pattern are patterned from a same layer as the intermediate electrode.