Display device and method of driving the same
AssigneeSamsung Display Co., Ltd.
InventorsBYUNGCHANG YU, JANGMI KANG, MYUNGHOON PARK, DONG-HOON LEE
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Abstract
A display device is disclosed that includes a first circuit including a driving transistor including a first electrode, a second electrode, a gate electrode, and a back gate electrode, a light emitting element including an anode and a cathode connected to the first circuit, and a second circuit including a first transistor connected between the back gate electrode of the driving transistor and a compensation voltage line, and a second transistor connected between the back gate electrode of the driving transistor and a first voltage line.
Claims20
A display device comprising:
- a first circuit which is electrically connected to a data line, a plurality of scan lines, and a plurality of voltage lines, and includes a driving transistor including a first electrode, a second electrode, a gate electrode, and a back gate electrode;
- a light emitting element including an anode, and a cathode connected to the first circuit;
- and
- a second circuit including a first transistor connected between the back gate electrode of the driving transistor and a compensation voltage line, and a second transistor connected between the back gate electrode of the driving transistor and a first voltage line among the plurality of voltage lines.
A display device comprising:
- a first circuit including a driving transistor including a first electrode, a second electrode, a gate electrode, and a back gate electrode;
- and
- a light emitting element including an anode, and a cathode connected to the first circuit,
- wherein the first circuit is configured so that, in a compensation period, a first compensation voltage is applied to the back gate electrode of the driving transistor, a second compensation voltage is applied to the first electrode of the driving transistor, and a voltage obtained by adding a threshold voltage of the driving transistor to the second compensation voltage is applied to the gate electrode of the driving transistor.
A method of driving a display device comprising a pixel including a first circuit including a driving transistor including a first electrode, a second electrode, a gate electrode, and a back gate electrode, and a light emitting element including an anode, and a cathode connected to the first circuit, the method comprising:
- initializing the cathode of the light emitting element;
- compensating by applying a voltage obtained by adding a threshold voltage of the driving transistor to a second compensation voltage to the gate electrode of the driving transistor by applying a first compensation voltage to the back gate electrode of the driving transistor and applying the second compensation voltage to the first electrode of the driving transistor;
- and
- allowing the light emitting element to emit light by allowing a current, from which an influence of the threshold voltage of the driving transistor is removed, to flow from the first electrode of the driving transistor to the second electrode thereof.
Dependencies are inferred from the claim text.