Light-emitting display device and pixel thereof
AssigneeSamsung Display Co., Ltd.
InventorsHyun Joon Kim, Jun Ki Jeong
Life of this patent
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Abstract
A pixel of a light-emitting display device includes a capacitor, a first transistor, a second transistor including a gate receiving a gate writing signal, a third transistor including a gate receiving a scan signal, a fourth transistor including a gate receiving a gate initialization signal, a fifth transistor including a gate receiving a first emission signal, a sixth transistor including a gate receiving a second emission signal, and a light-emitting diode. The scan signal and the gate writing signal may be provided at a first frequency, and the first emission signal, the second emission signal and the gate initialization signal may be provided at a second frequency higher than the first frequency.
Claims20
A pixel of a light-emitting display device, the pixel comprising:
- a first transistor including a gate coupled to a gate node, a first terminal, and a second terminal;
- a second transistor including a gate receiving a first signal, a first terminal coupled to a data line, and a second terminal coupled to the first transistor;
- a third transistor including a gate receiving a second signal, a first terminal coupled to a line of an initialization voltage, and a second terminal coupled to an anode of a light-emitting diode;
- and
- a fourth transistor including a gate receiving a third signal, a first terminal coupled to the second terminal of the first transistor, and a second terminal coupled to the anode of the light-emitting diode,
- wherein a frequency of the first signal is different from a frequency of at least one of the second signal and the third signal,
- wherein the fourth transistor is a PMOS transistor.
A pixel of a light-emitting display device, the pixel comprising:
- a first transistor including a gate coupled to a gate node, a first terminal, and a second terminal;
- a second transistor including a gate receiving a first signal, a first terminal coupled to a data line, and a second terminal coupled to the first transistor;
- a third transistor including a gate receiving a second signal, a first terminal, and a second terminal coupled to the gate node;
- and
- a fourth transistor including a gate receiving a third signal, a first terminal coupled to the second terminal of the first transistor, and a second terminal coupled to an anode of a light-emitting diode,
- wherein a frequency of at least one of the first signal and the second signal is different from a frequency of the third signal,
- wherein at least one of the first, second and third transistors is an NMOS transistor, and the fourth transistor is a PMOS transistor.
A pixel of a light-emitting display device, the pixel comprising:
- a first transistor including a gate coupled to a gate node, a first terminal, and a second terminal;
- a second transistor including a gate receiving a first signal, a first terminal coupled to a data line, and a second terminal coupled to the first transistor;
- a third transistor including a gate receiving a second signal, a first terminal coupled to the second terminal of the first transistor, and a second terminal coupled to the gate node;
- and
- a fourth transistor including a gate receiving a third signal, a first terminal coupled to the second terminal of the first transistor, and a second terminal coupled to an anode of a light-emitting diode,
- wherein a frame period for the light-emitting display device includes a first sub-frame period and a second sub-frame period,
- wherein, in the first sub-frame period, the second, third and fourth transistors are turned on,
- wherein, in the second sub-frame period, the fourth transistor is turned on, and the second and third transistors are not turned on,
- wherein at least one of the first, second and third transistors is an NMOS transistor, and the fourth transistor is a PMOS transistor.
An electronic device comprising:
- a processor configured to provide input image data;
- a light-emitting display device configured to receive the input image data from the processor, and to display an image based on the input image data, the light-emitting display device including a plurality of pixels,
- wherein at least one of the plurality of pixels comprises:
- a first transistor including a gate coupled to a gate node, a first terminal, and a second terminal;
- a second transistor including a gate receiving a first signal, a first terminal coupled to a data line, and a second terminal coupled to the first transistor;
- a third transistor including a gate receiving a second signal, a first terminal coupled to a line of an initialization voltage, and a second terminal coupled to an anode of a light-emitting diode;
- and
- a fourth transistor including a gate receiving a third signal, a first terminal coupled to the second terminal of the first transistor, and a second terminal coupled to the anode of the light-emitting diode,
- wherein a frequency of the first signal is different from a frequency of at least one of the second signal and the third signal,
- wherein the fourth transistor is a PMOS transistor.
Dependencies are inferred from the claim text.