Driving method of light emitting device

A driving method of a light emitting device comprising a step of inputting a video signal and a erasing signal to perform a digital gray scale display,

• the light emitting device comprising:
• a switching transistor, wherein a source electrode or a drain electrode thereof is connected to a signal line and a gate electrode thereof is connected to a scan line;
• a driving transistor, wherein a gate electrode thereof is connected to the switching transistor;
• and
• a light emitting element connected to a source electrode or a drain electrode of the driving transistor,
• wherein a period for inputting the erasing signal is longer than a period for inputting the video signal.

A driving method of a light emitting device comprising a step of inputting the video signal and a erasing signal to perform a digital gray scale display,

• the light emitting device comprising:
• a switching transistor, wherein a source electrode or a drain electrode thereof is connected to a signal line and a gate electrode thereof is connected to a scan line;
• a driving transistor, wherein a gate electrode thereof is connected to the switching transistor;
• a erasing transistor for discharging a charge corresponding to a gate-source voltage of the driving transistor;
• and
• a light emitting element connected to a source electrode or a drain electrode of the driving transistor,
• wherein a period for inputting the erasing signal is longer than a period for inputting the video signal.

A driving method of a light emitting device comprising a step of inputting the video signal and a erasing signal to perform a digital gray scale display,

• the light emitting device comprising:
• a switching transistor, wherein a source electrode or a drain electrode thereof is connected to a signal line and a gate electrode thereof is connected to a scan line;
• a driving transistor, wherein a gate electrode thereof is connected to the switching transistor;
• a erasing transistor for discharging a charge corresponding to a gate-source voltage of the driving transistor;
• a transistor connected to the driving transistor in series and having an fixed gate potential;
• and
• a light emitting element connected to a source electrode or a drain electrode of the driving transistor,
• wherein a period for inputting the erasing signal is longer than a period for inputting the video signal.