| 摘要 |
When the scanning line turns high and the first transistor turns on to write luminance data, a potential corresponding to the luminance data in the organic light emitting diode is set in both the gate electrode of the second transistor. At the same time, the fourth transistor turns on, and the electric charge in the anode of the organic light emitting diode is pulled out to ground potential by way of the fourth transistor. Also, at the same time, the third transistor turns off, so that any shoot-through current from the power supply line Vdd will be prevented. Thus the potential at the anode of the organic light emitting diode becomes the same as the ground potential. Thus, the luminance data already present in the optical element is initialized.
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