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US 11,961,456 B2Granted
Pixel circuit and display apparatus including the same
AssigneeSamsung Display Co., Ltd.
InventorsSungmin Son, Jae-Jin Song
Life of this patent
Estimating the term…
Abstract
A pixel circuit includes a light emitting element, a first transistor, a second transistor, and a third transistor. The first transistor applies a driving current to the light emitting element. The second transistor and the third transistor apply an initialization voltage to a first electrode of the light emitting element. The second transistor and the third transistor are electrically connected to each other in series.
Claims18
A pixel circuit comprising:
- a light emitting element;
- a first transistor that applies a driving current to the light emitting element;
- and
- a second transistor and a third transistor that apply an initialization voltage to a first electrode of the light emitting element and electrically connected to each other in series, wherein a first control signal applied to a control electrode of the second transistor is different from a second control signal applied to a control electrode of the third transistor.
1 more element
A pixel circuit comprising:
- a first transistor including:
- a control electrode electrically connected to a first node;
- an input electrode electrically connected to a second node;
- and
- an output electrode electrically connected to a third node;
- a second transistor including:
- a control electrode that receives a data writing gate signal;
- an input electrode that receives a data voltage;
- and
- an output electrode electrically connected to the second node;
- a third transistor including:
- a control electrode that receives a compensation gate signal;
- an input electrode electrically connected to the first node;
- and
- an output electrode electrically connected to the third node;
- a fourth transistor including:
- a control electrode that receives a data initialization gate signal;
- an input electrode that receives a first initialization voltage;
- and
- an output electrode electrically connected to the first node;
- a fifth transistor including:
- a control electrode that receives an emission signal of a present stage;
- an input electrode that receives a first power voltage;
- and
- an output electrode electrically connected to the second node;
- a sixth transistor including:
- a control electrode that receives the emission signal of the present stage;
- an input electrode electrically connected to the third node;
- and
- an output electrode electrically connected to a first electrode of a light emitting element;
- a 7-1-th transistor including:
- a control electrode that receives the emission signal of the present stage;
- an input electrode electrically connected to a fourth node;
- and
- an output electrode electrically connected to the first electrode of the light emitting element;
- and
- a 7-2-th transistor including:
- a control electrode that receives an emission signal of one of next stages of the present stage;
- an input electrode that receives second initialization voltage;
- and
- an output electrode electrically connected to the fourth node,
- wherein a second power voltage is applied to a second electrode of the light emitting element.
39 more elements
A pixel circuit comprising:
- a first transistor including:
- a control electrode electrically connected to a first node;
- an input electrode electrically connected to a second node;
- and
- an output electrode electrically connected to a third node;
- a second transistor including:
- a control electrode that receives a data writing gate signal;
- an input electrode that receives a data voltage;
- and
- an output electrode electrically connected to the second node;
- a third transistor including:
- a control electrode that receives a compensation gate signal;
- an input electrode electrically connected to the first node;
- and
- an output electrode electrically connected to the third node;
- a fourth transistor including:
- a control electrode that receives a data initialization gate signal;
- an input electrode that receives an initialization voltage;
- and
- an output electrode electrically connected to the first node;
- a fifth transistor including:
- a control electrode that receives an emission signal of a present stage;
- an input electrode that receives a first power voltage;
- and
- an output electrode electrically connected to the second node;
- a sixth transistor including:
- a control electrode that receives the emission signal of the present stage;
- an input electrode electrically connected to the third node;
- and
- an output electrode electrically connected to a first electrode of a light emitting element;
- a 7-1-th transistor including:
- a control electrode that receives the emission signal of the present stage;
- an input electrode electrically connected to a fourth node;
- and
- an output electrode electrically connected to the first electrode of the light emitting element;
- and
- a 7-2-th transistor including:
- a control electrode that receives an emission signal of one of next stages of the present stage;
- an input electrode that receives the initialization voltage;
- and an output electrode electrically connected to the fourth node,
- wherein a second power voltage is applied to a second electrode of the light emitting element.
38 more elements
A display apparatus comprising:
- a display panel including a pixel;
- a gate driver that provides a gate signal to the pixel;
- a data driver that provides a data voltage to the pixel;
- and
- an emission driver that provides an emission signal to the pixel,
- wherein the pixel comprises:
- a light emitting element;
- a first transistor that applies a driving current to the light emitting element;
- and
- a second transistor and a third transistor that apply an initialization voltage to a first electrode of the light emitting element and electrically connected to each other in series, wherein
- a first control signal applied to a control electrode of the second transistor is different from a second control signal applied to a control electrode of the third transistor.
8 more elements
Dependencies are inferred from the claim text.