Patent ID: 11973089
Assignee: LG DISPLAY CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 14:
15. A display device comprising:
a first thin film transistor including a first semiconductor pattern disposed on a substrate, a first gate electrode overlapping the first semiconductor pattern with a first gate insulation layer interposed therebetween and disposed over the first semiconductor pattern in a cross-sectional view of the display device, and a first source electrode and a first drain electrode connected to the first semiconductor pattern;
a middle layer on the first gate electrode;
a second thin film transistor including a second semiconductor pattern disposed on the middle layer, a second source electrode and a second drain electrode on the second semiconductor pattern, and a second gate electrode overlapping the second semiconductor pattern and disposed over the second semiconductor pattern in the cross-sectional view;
a light emitting element including a first electrode and a second electrode corresponding to the first electrode and a light emitting layer between the first electrode and the second electrode; and
a storage capacitor including a first storage electrode disposed on a same layer and comprising a same material as the first semiconductor pattern, a second storage electrode comprising a same material as the first gate electrode and overlapping the first storage electrode with the first gate insulation layer interposed therebetween, a third storage electrode disposed in a same layer as the second semiconductor pattern, and overlapping the second storage electrode with the middle layer interposed therebetween, and a fourth storage electrode disposed on an interlayer insulation layer disposed on the second gate electrode while overlapping the third storage electrode; and
a second gate insulation layer interposed between the second gate electrode and the second semiconductor pattern and covering at least a portion of a top surface of the third storage electrode.