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US 12,609,082 B2Granted
Pixel and display device including the same
AssigneeSamsung Display Co., Ltd.
InventorsHongsoo Kim, Jin-Wook Yang, Yu-Chol Kim, Seongoh Yeom, Eui-Myeong Cho, Jakyoung Jin
Life of this patent
Estimating the term…
Abstract
Disclosed is a pixel which includes a light emitting element, a first capacitor, a first transistor including a gate electrode connected to the first node, a second transistor including a gate electrode connected to a first scan line, a third transistor including a gate electrode connected to a second scan line, and a fourth transistor including a gate electrode connected to the second scan line. During a first initialization period, a first scan signal provided to the first scan line and a second scan signal provided to the second scan line are at an active level.
Claims21
A pixel comprising:
- a light emitting element including a first electrode electrically connected to a first voltage line through which a first driving voltage is provided, a second electrode electrically connected to a second voltage line through which a second driving voltage whose voltage level is lower than a voltage level of the first driving voltage is provided;
- a first capacitor connected between a first node and a second node;
- a first transistor including a first electrode connected to a third node, a second electrode electrically connected to the first electrode of the light emitting element, and a gate electrode connected to the first node;
- a second transistor including a first electrode connected to the first node, a second electrode connected to a third voltage line, and a gate electrode connected to a first scan line;
- a third transistor including a first electrode connected to the first electrode of the light emitting element, a second electrode connected to a fifth voltage line, and a gate electrode connected to a second scan line;
- a fourth transistor including a first electrode connected to a fourth voltage line, a second electrode connected to the third node, and a gate electrode connected to the second scan line;
- a fifth transistor including a first electrode connected to the first voltage line, a second electrode connected to the third node, and a gate electrode connected to a third scan line;
- a sixth transistor including a first electrode connected to the second electrode of the first transistor, a second electrode connected to the first node, and a gate electrode connected to the third scan line;
- a seventh transistor including a first electrode connected to the sixth voltage line through which a reference voltage is provided, a second electrode connected to the second node, and a gate electrode connected to the third scan line;
- and
- an eighth transistor including a first electrode connected to a data line, a second electrode connected to the second node, and a gate electrode connected to a fourth scan line,
- wherein, during a first initialization period, a first scan signal provided to the first scan line and a second scan signal provided to the second scan line are at an active level, and
- wherein, during the first initialization period, a bias voltage is provided from the fourth voltage line to the third node.
10 more elements
A display device comprising:
- a display panel including a pixel connected to a plurality of scan lines, an emission line, and a data line;
- a driving circuit configured to drive the plurality of scan lines and the emission line in response to a scan control signal;
- a driving controller configured to output the scan control signal;
- and
- a voltage generator configured to generate a plurality of driving voltages,
- wherein the pixel includes:
- a light emitting element including a first electrode electrically connected to a first voltage line through which a first driving voltage is provided, a second electrode electrically connected to a second voltage line through which a second driving voltage whose voltage level is lower than a voltage level of the first driving voltage is provided;
- a first capacitor connected between a first node and a second node;
- a first transistor including a first electrode connected to a third node, a second electrode electrically connected to the first electrode of the light emitting element, and a gate electrode connected to the first node;
- a second transistor including a first electrode connected to the first node, a second electrode connected to a third voltage line through which a first initialization voltage is provided, and a gate electrode connected to a first scan line;
- a third transistor including a first electrode connected to the first electrode of the light emitting element, a second electrode connected to a fifth voltage line through which a second initialization voltage is provided, and a gate electrode connected to a second scan line;
- a fourth transistor including a first electrode connected to a fourth voltage line, a second electrode connected to the third node, and a gate electrode connected to the second scan line;
- a fifth transistor including a first electrode connected to the first voltage line, a second electrode connected to the third node, and a gate electrode connected to a third scan line;
- a sixth transistor including a first electrode connected to the second electrode of the first transistor, a second electrode connected to the first node, and a gate electrode connected to the third scan line;
- a seventh transistor including a first electrode connected to a sixth voltage line through which a reference voltage is provided, a second electrode connected to the second node, and a gate electrode connected to the third scan line;
- and
- an eighth transistor including a first electrode connected to the data line, a second electrode connected to the second node, and a gate electrode connected to a fourth scan line,
- wherein, during a first initialization period, a first scan signal provided to the first scan line and a second scan signal provided to the second scan line are at an active level, and
- wherein, during the first initialization period, a bias voltage is provided from the fourth voltage line to the third node.
16 more elements
Dependencies are inferred from the claim text.