Patent ID: 11950455
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 19:
20. A display device comprising:
a substrate including a driving portion and a pixel portion;
a first buffer layer in the driving portion on the substrate and including silicon nitride;
a second buffer layer in the driving portion on top of and contacting the first buffer layer, and in the pixel portion on top of and contacting the substrate, the second buffer layer including silicon oxide;
a first transistor in the driving portion on the second buffer layer and including a first oxide semiconductor layer and a first gate electrode overlapping the first oxide semiconductor layer;
a second transistor in the pixel portion on the second buffer layer and including a second oxide semiconductor layer and a second gate electrode overlapping the second oxide semiconductor layer;
a first electrode in the pixel portion on the substrate;
a second electrode facing the first electrode; and
a light emitting layer between the first electrode and the second electrode.