US 2026/0136606 A1 · TRANSISTOR AND DISPLAY DEVICE INCLUDING THE SAME

Abstract

A display device includes a substrate including a first area including first subpixels and a transmissive part, and a second area including second subpixels. A first transistor in the first area includes an oxide semiconductor active layer, a gate electrode, and first and second source-drain electrodes. A second transistor disposed in the first area includes an oxide semiconductor active layer including first and second active layers, a gate electrode, and first and second source-drain electrodes. A light-emitting element is disposed in the first area. A third transistor is connected between the second transistor and the light-emitting element and includes an oxide semiconductor active layer including first and second active layers, a gate electrode, and first and second source-drain electrodes. The second active layer of the third transistor has a higher carrier mobility than the first active layer of the third transistor.

Claims24

Dependent claims

A transistor comprising:

an active layer comprising an oxide semiconductor material, the active layer including a first active layer and a second active layer contacting the first active layer, the second active layer having a higher carrier mobility than a carrier mobility of the first active layer;
a gate electrode overlapping at least a portion of the first active layer and at least a portion of the second active layer of the active layer to form a channel region;
a first source-drain electrode insulated from the gate electrode and connected to another portion of the second active layer not overlapping the gate electrode;
and
a second source-drain electrode insulated from the gate electrode and connected to another portion of the first active layer not overlapping the gate electrode.

2 more elements

A display device comprising:

a substrate comprising a first area comprising a plurality of first subpixels and a transmissive part, and a second area comprising a plurality of second subpixels;
a first transistor disposed in the first area with the transmissive part, the first transistor comprising an active layer comprising an oxide semiconductor material, a gate electrode, and a first source-drain electrode and a second source-drain electrode;
a second transistor disposed in the first area with the transmissive part, the second transistor comprising an active layer comprising a first active layer and a second active layer each comprising an oxide semiconductor material, a gate electrode, a first source-drain electrode, and a second source-drain electrode;
a light-emitting element disposed in the first area with the transmissive part;
and
a third transistor electrically connected between the second transistor and the light-emitting element, the third transistor comprising an active layer comprising a first active layer and a second active layer each comprising an oxide semiconductor material, a gate electrode, a first source-drain electrode, and a second source-drain electrode,
wherein the second active layer of the third transistor has a higher carrier mobility than a carrier mobility of the first active layer of the third transistor.

4 more elements

Dependencies are inferred from the claim text.

Transistor and display device including the same

Life of this patent

Transistor and display device including the same

Life of this patent

Abstract

Claims24