| 摘要 |
In organic EL display apparatuses, when the reset operating time required for compensating variations in the OLED drive TFT voltage threshold is too short then fluctuations in the threshold voltage Vth cannot be corrected and an accurate gray scale is impossible. A precharge voltage is supplied from the precharge TFT switch prior to the reset TFT switch and the light TFT switch resetting the Vth of the OLED driver TFT, in order to apply a specified voltage value to the gate voltage of the OLED driver TFT prior to reset. The voltage potential on the gate of the OLED driver TFT prior to reset is therefore no longer an undetermined voltage potential so variations in the gate voltage after reset are suppressed and variations in the gray scale are suppressed. |
