Display panel and display device including the same
AssigneeSamsung Display Co., Ltd.
InventorHai-Jung In
Life of this patent
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Abstract
A display panel includes a pixel connected to a scan line and a data line, and a lighting test circuit which provides a lighting test voltage to the pixel through the data line. The lighting test circuit includes a first test transistor including a first electrode which receives the lighting test voltage, a second electrode and a gate electrode which receives a first test control signal, and a second test transistor including a first electrode connected to the second electrode of the first test transistor, a second electrode connected to the data line and a gate electrode which receives a second test control signal.
Claims15
A display panel, comprising:
- a pixel connected to a scan line and a data line;
- and
- a lighting test circuit which provides a lighting test voltage to the pixel through the data line,
- wherein the lighting test circuit includes:
- a first test transistor including a first electrode which receives the lighting test voltage, a second electrode, and a gate electrode which receives a first test control signal;
- and
- a second test transistor including a first electrode connected to the second electrode of the first test transistor, a second electrode connected to the data line, and a gate electrode which receives a second test control signal,
- wherein the image display period includes a plurality of frame periods that each include a data write period in which the data voltage is written to the data line and a data porch period in which the data voltage is not written to the data line, and
- wherein during the data write period only one of the first test control signal and the second test control signal has a high voltage and during at least a portion of the data porch period both the first test control signal and the second test control signal simultaneously have a low voltage.
A display device, comprising:
- a pixel connected to a scan line and a data line;
- a scan driver which provides a scan signal to the pixel through the scan line;
- a data driver which provides a data voltage to the pixel through the data line;
- and
- a lighting test circuit which provides a lighting test voltage to the pixel through the data line,
- wherein the lighting test circuit includes:
- a first test transistor including a first electrode which receives the lighting test voltage, a second electrode, and a gate electrode which receives a first test control signal;
- and
- a second test transistor including a first electrode connected to the second electrode of the first test transistor, a second electrode connected to the data line, and a gate electrode which receives a second test control signal,
- wherein the image display period includes a plurality of frame periods that each include a data write period in which the data voltage is written to the data line and a data porch period in which the data voltage is not written to the data line, and
- wherein during the data write period only one of the first test control signal and the second test control signal has a high voltage and during at least a portion of the data porch period both the first test control signal and the second test control signal simultaneously have a low voltage data.
Dependencies are inferred from the claim text.