Abstract: A display device includes a substrate including a display area and a component area, and first and second signal lines disposed on the substrate, in which each of the display area and the component area includes a first semiconductor layer, a first gate conductive layer and a second gate conductive layer on the first semiconductor layer, a second semiconductor layer on the second gate conductive layer, a third gate conductive layer on the second semiconductor layer, an insulating layer in which openings surrounding the first semiconductor layer, the second gate conductive layer, the second semiconductor layer and the third gate conductive layer are defined, and first and second data conductive layers on the insulating layer, in which the first signal line in the first data conductive layer and the second signal line in the second data conductive layer respectively extend in perpendicular directions.

Abstract: A display device includes a base layer, a circuit layer including a reinforcing layer disposed on the base layer and transistors disposed on the reinforced layer, where each of the transistors includes a semiconductor pattern including a source, an active, a drain, and a gate, and a display layer including a light-emitting diode connected to the transistors, where the reinforcing layer overlaps three or more actives among actives of the transistors. Some of semiconductor patterns of the transistors include polysilicon, others of the semiconductor patterns of the transistors include oxide, and a distance from the reinforcing layer to a semiconductor pattern including the polysilicon is shorter than a distance from the reinforcing layer to a semiconductor pattern including the oxide.

Abstract: A display panel includes a folding axis about which the display panel is foldable, a circuit element layer which is foldable about the folding axis, the circuit element layer including a first transistor including a first semiconductor pattern, a second transistor electrically connected to the first transistor and including a second semiconductor pattern, and the first semiconductor pattern and the second semiconductor pattern on a same layer of the circuit element layer, and a connection pattern which connects the first semiconductor pattern and the second semiconductor pattern to each other, and is on a different layer of the circuit element layer from the same layer on which the first semiconductor pattern and the second semiconductor pattern are disposed, and a light emission element connected to the circuit element layer.

Abstract: A pixel includes a light emitting element including an anode and a cathode, a first transistor connected between the anode and a first power line and switched by a voltage of a node, a second transistor connected between the first transistor connected to the first power line and a data line and switched by a write scan signal, a third transistor connected between the node and the anode and switched by a compensation scan signal, and an insulating layer covering the second and third transistors. A first groove is defined in a portion of the insulating layer adjacent to the third transistor.