US 12,112,705 B2 · Pixel, display device, and method of driving display device

Abstract

A pixel includes an organic light-emitting diode, a driving transistor, a first dual gate transistor, a first capacitor, and a compensation transistor. The organic light-emitting diode includes first and second terminals. The driving transistor generates the driving current and includes a first terminal to which a first power supply voltage is applied, a second terminal connected to the first terminal of the organic light-emitting diode, and a gate terminal. The first dual gate transistor is connected between the gate terminal of the driving transistor and the second terminal of the driving transistor and includes first and second sub-transistors. The first capacitor includes a first electrode to which the first power supply voltage is applied, and a second electrode connected to a first node that connects the first and second sub-transistors to each other. The compensation transistor includes a terminal connected between the second electrode and the first node.

Claims20

Dependent claims

A pixel comprising:

an organic light-emitting diode including a first terminal electrically connected to an output node and a second terminal electrically connected to a second power supply voltage line;
a driving transistor including a first terminal electrically connected to an input node, a second terminal electrically connected to the output node, and a gate terminal electrically connected to a control node;
a first dual gate transistor electrically connected between the control node and the second terminal of the driving transistor, the first dual gate transistor including a first sub-transistor and a second sub-transistor which are connected in series;
a first capacitor including a first electrode electrically connected to a first power supply voltage line and a second electrode electrically connected to a first node which connects the first and second sub-transistors to each other;
and
a compensation transistor including a first terminal to which a compensation voltage is applied, a second terminal electrically connected to the first node, and a gate terminal to which a compensation gate signal is applied.

3 more elements

A display device comprising:

a display panel including pixels, each of the pixels including:
an organic light-emitting diode including a first terminal electrically connected to an output node and a second terminal electrically connected to a second power supply voltage line;
a driving transistor including a first terminal electrically connected to an input node, a second terminal electrically connected to the output node, and a gate terminal electrically connected to a control node;
a first dual gate transistor electrically connected between the control node and the second terminal of the driving transistor, the first dual gate transistor including a first sub-transistor and a second sub-transistor which are connected in series;
a first capacitor including a first electrode electrically connected to a first power supply voltage line and a second electrode electrically connected to a first node which connects the first and second sub-transistors to each other;
and
a compensation transistor including a first terminal to which a compensation voltage is applied, a second terminal electrically connected to the first node, and a gate terminal to which a compensation gate signal is applied;
a data driver which generates a data voltage corresponding to input image data and supplies the data voltage to the pixels;
and
a compensation driver which receives gray level data from the data driver and generates the compensation voltage.

7 more elements

Dependencies are inferred from the claim text.

Pixel, display device, and method of driving display device

Life of this patent

Pixel, display device, and method of driving display device

Life of this patent

Abstract

Claims20