Electro-optic device and driving method thereof

摘要

A driving method of an electro-optic device includes initializing a gate voltage of a driving transistor; and performing a data write operation where a threshold voltage of the driving transistor is compensated by turning on a first transistor and a second transistor connected in series between a drain and a gate of the driving transistor and a voltage is provided to a capacity element connected to the gate of the driving transistor to hold a voltage of the compensated data signal as a gate voltage. The first transistor is at a drain side of the driving transistor and the second transistor is between the first transistor and a gate side of the driving transistor. When the data write operation ends, the second transistor is first turned off and, subsequently, the first transistor is turned off. The second transistor is again turned on after the first transistor is turned off.

主权项

1. A driving method of an electro-optic device comprising:
initializing a gate voltage of a driving transistor; performing a data write operation where, when a data signal having a voltage level corresponding to a gradation is provided to the driving transistor, a threshold voltage of the driving transistor is compensated by turning on a first transistor and a second transistor connected in series between a drain and a gate of the driving transistor and a voltage is provided to a capacity element connected to the gate of the driving transistor to hold a voltage of the compensated data signal as a gate voltage, the first transistor being placed at a drain side of the driving transistor and the second transistor being placed at a gate side of the driving transistor; and performing a light-emitting operation by providing a drain current according to the held gate voltage of the driving transistor to a light-emitting element connected to the drain of the driving transistor, wherein, when the data write operation is ended, the second transistor of the first and second transistors being at a turn-on state is first turned off and, then, the first transistor is turned off; and wherein the second transistor is again turned on after the first transistor is turned off.