CURRENT DRIVE TYPE DISPLAY AND PIXEL CIRCUIT

摘要

In a pixel circuit (100), a switching TFT (114), a driving TFT (110) and an organic EL element (130) are provided between a power supply line (Vp) and a common cathode (Vcom), and a capacitor (121) and switching TFT (111) are provided between the gate terminal of the driving TFT (110) and a data line (Sj). A switching TFT (112) is provided between the joint (A) of the capacitor (121) and the switching TFT (111) and a power supply line (Vr), a switching TFT (113) is provided between the gate terminal and the drain terminal of the driving TFT (110), and a capacitor (122) is provided between the gate terminal of the driving TFT (110) and the power supply line (Vr). Consequently, a period for compensating variation in threshold voltage of a driving element can be set freely, and a display presenting high quality display by holding the control terminal potential of the driving element during light emission of an electrooptical element is provided.