Patent ID: 11910652
Assignee: LG DISPLAY CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. An organic light emitting display device comprising:
a substrate;
a first conductive layer disposed on the substrate;
a buffer layer disposed on the first conductive layer;
an active layer disposed on the buffer layer;
a first insulating film disposed on or over the active layer, the first insulating film overlapping a part of an upper surface of the active layer;
a second insulating film disposed on or over the first insulating film, the second insulating film including a first contact hole exposing the part of the upper surface of the active layer;
a third insulating film disposed on the second insulating film, the third insulating film including a second contact hole overlapping the first contact hole; and
an electrode of an organic light emitting element disposed on the third insulating film, the electrode contacting the active layer through the first contact hole and the second contact hole,
wherein an area in which the active layer and a second conductive layer contact is included in a node at which a reference voltage is applied to a driving transistor.