Display device and driving method thereof

A display device comprising a light emitting element and an analog switch including a first transistor and a second transistor,

• wherein one of a first electrode and a second electrode of the light emitting element is electrically connected to a first power supply line, and the other is electrically connected to a second power supply line;
• wherein a gate electrode of the first transistor is electrically connected to the first power supply line, and a gate electrode of the second transistor is electrically connected to the second power supply line;
• and
• wherein an output terminal of the analog switch is electrically connected to a signal line.

A driving method of a display device comprising a light emitting element, an analog switch including a first transistor and a second transistor, and a biasing transistor,

• wherein one of a first electrode and a second electrode of the light emitting element is electrically connected to a first power supply line, and the other is electrically connected to a second power supply line;
• wherein a gate electrode of the first transistor is electrically connected to the first power supply line, and a gate electrode of the second transistor is electrically connected to the second power supply line;
• and
• wherein a gate electrode of the biasing transistor is electrically connected to a third power supply line, one of a source electrode and a drain electrode of the biasing transistor is electrically connected to the first power supply line, and the other is electrically connected to an output terminal of the analog switch and a scan line,
• the method comprising the steps of:
• inverting a potential of the first power supply line and a potential of the second power supply line;
• applying a reverse bias to the light emitting element;
• turning off the analog switch and turning on the biasing transistor;
• and
• making the potential of the first power supply line equal to a potential of the scan line.

A driving method of a display device comprising a light emitting element and an analog switch including a first transistor and a second transistor,

• wherein one of a first electrode and a second electrode of the light emitting element is electrically connected to a first power supply line, and the other is electrically connected to a second power supply line;
• wherein a gate electrode of the first transistor is electrically connected to the first power supply line, and a gate electrode of the second transistor is electrically connected to the second power supply line;
• and
• wherein an output terminal of the analog switch is electrically connected to a signal line,
• the method comprising the steps of:
• inverting a potential of the first power supply line and a potential of the second power supply line;
• applying a reverse bias to the light emitting element;
• and
• turning off the analog switch.

A driving method of a display device comprising a light emitting element, a clocked inverter including a first transistor and a second transistor, and a biasing transistor,

• wherein one of a first electrode and a second electrode of the light emitting element is electrically connected to a first power supply line, and the other is electrically connected to a second power supply line;
• wherein a gate electrode of the first transistor is electrically connected to the first power supply line, and a gate electrode of the second transistor is electrically connected to the second power supply line;
• and
• wherein a gate electrode of the biasing transistor is electrically connected to a third power supply line, one of a source electrode and a drain electrode of the biasing transistor is electrically connected to the first power supply line, and the other is electrically connected to an output terminal of the clocked inverter and a scan line,
• the method comprising the steps of:
• inverting a potential of the first power supply line and a potential of the second power supply line;
• applying a reverse bias to the light emitting element;
• making the clocked inverter enter a high impedance state and turning on the biasing transistor;
• making the potential of the first power supply line equal to a potential of the scan line;
• and
• turning off a transistor selected from a plurality of transistors disposed between the first power supply line and the signal line.