Pixel and display device including the same
AssigneeSamsung Display Co., Ltd.
InventorsSU JIN KIM, CHULKYU KANG, DONGHYUN KIM, SEON-KYOON MOK
Life of this patent
Estimating the term…
Abstract
In a pixel of a display device, a back gate control voltage is applied to a back gate electrode of a first transistor that operates as a driving transistor in an anode initialization period, and the back gate electrode of the first transistor is connected to an anode of a light emitting element in a light emitting period. A first transfer line is disposed apart from the first transistor in a first direction. A capacitor pattern is disposed apart from the first transistor in a second direction opposite to the first direction. A second transmission line is disposed between the first transistor and the capacitor pattern.
Claims20
A pixel comprising:
- a first transistor which generates a driving current;
- a light emitting element which emits light based on the driving current;
- a second transistor which applies a data voltage to a second electrode of the first transistor in response to a write signal;
- a third transistor which diode-connects the first transistor in response to the write signal;
- a fourth transistor which applies a reference voltage to a gate electrode of the first transistor in response to an initialization signal;
- a fifth transistor which applies a first power supply voltage to a first electrode of the first transistor in response to an emission signal;
- a sixth transistor which connects the first transistor and the light emitting element in response to the emission signal;
- a seventh transistor which applies an initialization voltage to an anode of the light emitting element in response to a bias signal;
- an eighth transistor which applies a back gate control voltage to a back gate electrode of the first transistor in response to the bias signal;
- a ninth transistor which connects the back gate electrode of the first transistor and the anode of the light emitting element in response to the emission signal;
- and
- a storage capacitor connected between the gate electrode of the first transistor and the seventh transistor.
A display device comprising:
- a display panel including a pixel;
- a gate driver which applies a write signal, an initialization signal, and a bias signal to the pixel;
- an emission driver which applies an emission signal to the pixel;
- and
- a driving controller which controls the gate driver and the emission driver,
- wherein the pixel includes,
- a first transistor which generates a driving current;
- a light emitting element which emits light based on the driving current;
- a second transistor which applies a data voltage to a second electrode of the first transistor in response to the write signal;
- a third transistor which diode-connects the first transistor in response to the write signal;
- a fourth transistor which applies a reference voltage to a gate electrode of the first transistor in response to the initialization signal;
- a fifth transistor which applies a first power supply voltage to a first electrode of the first transistor in response to the emission signal;
- a sixth transistor which connects the first transistor and the light emitting element in response to the emission signal;
- a seventh transistor which applies an initialization voltage to an anode of the light emitting element in response to the bias signal;
- an eighth transistor which applies a back gate control voltage to a back gate electrode of the first transistor in response to the bias signal;
- a ninth transistor which connects the back gate electrode of the first transistor and the anode of the light emitting element in response to the emission signal;
- and
- a storage capacitor connected between the gate electrode of the first transistor and the seventh transistor.
Dependencies are inferred from the claim text.