| 摘要 |
Switching TFTs 111 and 112 are controlled to a conducting state and a switching TFT 113 to a non-conducting state, to provide a potential (VDD + Vth) according to a threshold voltage to a gate terminal of a driving TFT 110. Then, with the TFT 112 maintaining the conducting state, a potential of a data line Sj is changed from a reference potential Vpc to a data potential Vdata to place the TFT 110 in a conducting state. At this time, a current Ia flows and thus the gate terminal potential of the TFT 110 rises. The higher the mobility of the TFT 110, the larger the amount of change in gate terminal potential and the smaller the current flowing through an organic EL element 130 upon light emission. By this, a current that is not affected by variations in the threshold voltage of the TFT 110 nor by variations in the mobility of the TFT 110 flows through the organic EL element 130. Thus, in a current-driven type display device, variations in both the threshold voltage and mobility of a drive element are compensated for. |
