| 摘要 |
At a writing time, a first transistor 412 is turned on so that a data signal Xj is supplied to one end of a capacitor 420 . At this time, since a second transistor 414 is turned off, driving current does not flow to an organic light emitting diode (OLED) device 430 . A power supply voltage Vdd is supplied to the other end of a capacitor through a power supply line L. However, since the driving current does not flow at the writing time, the power supply voltage Vdd is not reduced by the wiring line resistance of the power supply line L. On the other hand, at an emission time, the first transistor 412 is turned off and the second transistor 414 is turned on. Therefore, the driving current is supplied to the OLED device 430.
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