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US 2019/0295470 A1Published application
Organic light emitting display device
AssigneeSamsung Display Co., Ltd.
InventorsGun Hee KIM, Kyung-Bae KIM, Joohee JEON
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Abstract
An organic light emitting display device includes a display panel including a plurality of pixels and a panel driver configured to generate driving signals to drive the plurality of pixels. Each of the plurality of pixels includes a first transistor, a second transistor, a storage capacitor, a third transistor, a maintain capacitor, a fourth transistor, a fifth transistor, and an organic light emitting diode. The maintain capacitor is configured to maintain a gate voltage of the first transistor during an emission period of the pixels.
Claims20
An organic light emitting display device comprising:
- a display panel including a plurality of pixels, a plurality of scan lines, a plurality of data lines, a first power voltage providing line, a second power voltage providing line, and a plurality of emission control lines;
- and
- a panel driver configured to provide a scan signal, a data voltage, a first power voltage, a second power voltage, and an emission control signal to drive the plurality of pixels, and
- wherein each of the plurality of pixels includes:
- a first transistor including a first electrode coupled to a first node, a second electrode coupled to a second node, and a gate electrode coupled to a third node;
- a second transistor including a gate electrode configured to receive the scan signal, a first electrode configured to receive the data voltage, and a second electrode coupled to the first node;
- a storage capacitor including a first electrode configured to receive the first power voltage and a second electrode coupled to the third node;
- a third transistor including a gate electrode configured to receive the scan signal, a first electrode coupled to the third node, and a second electrode coupled to the second node;
- a maintain capacitor coupled to the third node, wherein the maintain capacitor is configured to maintain a gate voltage of the first transistor during an emission period of a corresponding pixel;
- a fourth transistor including a gate electrode configured to receive the emission control signal, a first electrode coupled to the first power voltage providing line, and a second electrode coupled to the first node;
- a fifth transistor including a gate electrode configured to receive the emission control signal, a first electrode coupled to the second node, and a second electrode coupled to a fourth node;
- and
- an organic light emitting diode including a first electrode coupled to the fourth node and a second electrode configured to receive the second power voltage.
10 more elements
An organic light emitting display device comprising:
- a display panel including a plurality of pixels, a plurality of scan lines, a plurality of data lines, a first power voltage providing line, a second power voltage providing line, a plurality of emission control lines, and a plurality of scan control lines;
- and
- a panel driver configured to provide a scan signal, a data voltage, a first power voltage, a second power voltage, an emission control signal, and a scan control signal to drive the plurality of pixels, and
- wherein each of the plurality of pixels includes:
- a first transistor including a first electrode coupled to a first node, a second electrode coupled to a second node, and a gate electrode coupled to a third node;
- a second transistor including a gate electrode coupled to a fourth node, a first electrode configured to receive the data voltage, and a second electrode coupled to the first node;
- a storage capacitor including a first electrode configured to receive the first power voltage and a second electrode coupled to the third node;
- a third transistor including a gate electrode coupled to the fourth node, a first electrode coupled to a fifth node, and a second electrode coupled to the second node;
- a fourth transistor including a gate electrode configured to receive the emission control signal, a first electrode coupled to the first power voltage providing line, and a second electrode coupled to the first node;
- a fifth transistor including a gate electrode configured to receive the emission control signal, a first electrode coupled to the second node, and a second electrode coupled to a sixth node;
- and
- an organic light emitting diode including a first electrode coupled to the sixth node and a second electrode configured to receive the second power voltage,
- wherein each of the plurality of pixels arranged in a first column of the plurality of pixels includes:
- a first scan control transistor including a gate electrode configured to receive the scan control signal, a first electrode coupled to the scan line, and a second electrode coupled to the fourth node;
- and
- a second scan control transistor including a gate electrode configured to receive the scan control signal, a first electrode coupled to the third node, and a second electrode coupled to the fifth node.
13 more elements
Dependencies are inferred from the claim text.