US 12,626,650 B2Granted

Pixel of a display device, and display device

AssigneeSamsung Display Co., Ltd.

InventorsJongsik Shim, Soon-Gi Kwon, Donghyun Kim, Junyoung Min, Jun-Yong An, Chanyoung Yang, Seunghee Lee, Junwon Choi

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Abstract

A pixel includes a first transistor including a first and second gates, a first capacitor connected between a first node and a third node, a second capacitor connected between a fourth node and the third node, a second transistor receiving a first scan signal and connected between a data line and the first node, a third transistor receiving a second scan signal and connected between a reference voltage line and the first node, a fourth transistor receiving a third scan signal and connected between an initialization line and the third node, a fifth transistor receiving an emission signal and connected between a first power line and the second node, a sixth transistor receiving the second scan signal and connected between the fourth node and the second node, and a light emitting element connected between the third node and a second power line.

Claims20

Dependent claims

A pixel of a display device, the pixel comprising:

a first transistor including a first gate connected to a first node, a first terminal connected to a second node, a second terminal connected to a third node, and a second gate connected to a fourth node;
a first capacitor including a first electrode connected to the first node, and a second electrode connected to the third node;
a second capacitor including a first electrode connected to the fourth node, and a second electrode connected to the third node;
a second transistor including a gate which receives a first scan signal, a first terminal connected to a data line which transfers a data voltage, and a second terminal connected to the first node;
a third transistor including a gate which receives a second scan signal, a first terminal connected to a line which transfers a reference voltage, and a second terminal connected to the first node;
a fourth transistor including a gate which receives a third scan signal, a first terminal connected to a line which transfers an initialization voltage, and a second terminal connected to the third node;
a fifth transistor including a gate which receives an emission signal, a first terminal connected to a line which transfers a first power supply voltage, and a second terminal connected to the second node;
a sixth transistor including a gate which receives the second scan signal, a first terminal connected to the fourth node, and a second terminal connected to the second node;
and
a light emitting element connected between the third node, and a line which transfers a second power supply voltage.

7 more elements

A pixel of a display device, the pixel comprising:

a first transistor including a first gate connected to a first node, a first terminal connected to a second node, a second terminal connected to a third node, and a second gate connected to a fourth node;
a first capacitor including a first electrode connected to the first node, and a second electrode connected to the third node;
a second capacitor including a first electrode connected to the fourth node, and a second electrode connected to the third node;
a second transistor including a gate which receives a first scan signal, a first terminal connected to a data line which transfers a data voltage, and a second terminal connected to the first node;
a third transistor including a gate which receives a second scan signal, a first terminal connected to a line which transfers a reference voltage, and a second terminal connected to the first node;
a fourth transistor including a gate which receives a third scan signal, a first terminal connected to a line which transfers an initialization voltage, and a second terminal connected to the third node;
a fifth transistor including a gate which receives an emission signal, a first terminal connected to a line which transfers a first power supply voltage, and a second terminal connected to the second node;
a sixth transistor including a gate which receives the second scan signal, a first terminal connected to the fourth node, and a second terminal connected to the second node;
a seventh transistor including a gate which receives a fourth scan signal, a first terminal connected to the line which transfers the first power supply voltage, and a second terminal connected to the fourth node;
and
a light emitting element connected between the third node and a line which transfers a second power supply voltage,
wherein the first capacitor stores a voltage difference between the data voltage and the initialization voltage, and
wherein the second capacitor stores a threshold voltage of the first transistor in a diode connection manner.

10 more elements

An electronic device comprising:

a display panel including a plurality of pixels;
a data driver configured to provide a data voltage to each of the plurality of pixels;
a scan driver configured to provide a first scan signal, a second scan signal and a third scan signal to each of the plurality of pixels;
an emission driver configured to provide an emission signal to each of the plurality of pixels;
and
a controller configured to control the data driver, the scan driver and the emission driver,
wherein each of the plurality of pixels comprises:
a first transistor including a first gate connected to a first node, a first terminal connected to a second node, a second terminal connected to a third node, and a second gate connected to a fourth node;
a first capacitor including a first electrode connected to the first node, and a second electrode connected to the third node;
a second capacitor including a first electrode connected to the fourth node, and a second electrode connected to the third node;
a second transistor including a gate which receives the first scan signal, a first terminal connected to a data line which transfers the data voltage, and a second terminal connected to the first node;
a third transistor including a gate which receives the second scan signal, a first terminal connected to a line which transfers a reference voltage, and a second terminal connected to the first node;
a fourth transistor including a gate which receives the third scan signal, a first terminal connected to a line which transfers an initialization voltage, and a second terminal connected to the third node;
a fifth transistor including a gate which receives the emission signal, a first terminal connected to a line which transfers a first power supply voltage, and a second terminal connected to the second node;
a sixth transistor including a gate which receives the second scan signal, a first terminal connected to the fourth node, and a second terminal connected to the second node;
and
a light emitting element connected between the third node and a line which transfers a second power supply voltage.

14 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/977,136Filed 11 Dec 2024
Priority: KR 10-2024-000657616 Jan 2024
Published: US 2025/0232711 A117 Jul 2025
Granted: 12 May 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification12 codes

G09G 3/32
Using electroluminescent panels: semiconductive, e.g. using light-emitting diodes [LED]
G09G 3/3233
Using an active matrix: with pixel circuitry controlling the current through the light-emitting element
G09G 2300/0819
Several active elements per pixel in active matrix panels: used for counteracting undesired variations, e.g. feedback or autozeroing
G09G 2300/0842
Several active elements per pixel in active matrix panels: forming a memory circuit, e.g. a dynamic memory with one capacitor