Patent ID: 11950487
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A display apparatus, comprising:
a base substrate;
a first thin film transistor disposed on the base substrate;
a via insulation layer disposed on the first thin film transistor; and
a light emitting structure disposed on the via insulation layer,
wherein:
the first thin film transistor comprises:
a first gate electrode;
an oxide semiconductor overlapped with the first gate electrode, and comprising tin (Sn);
an etch stopper disposed on the oxide semiconductor and comprising an oxide semiconductor material which does not include tin (Sn);

a first source electrode making contact with the oxide semiconductor; and
a first drain electrode in contact with the oxide semiconductor, and spaced apart from the first source electrode;

the oxide semiconductor consists of at least one selected from the group consisting of indium-gallium-tin oxide (IGTO) and indium-gallium-zinc-tin-oxide (IGZTO); and
the etch stopper consists of at least one selected from the group consisting of zinc oxide (ZnOx), indium oxide (InOx), indium-gallium oxide (IGO), indium-zinc oxide (IZO), gallium-zinc oxide (GZO), zinc-magnesium oxide (ZMO), zinc-zirconium oxide (ZnZrxOy), and indium-gallium-hafnium oxide (IGHO).