PIXEL CIRCUIT, DISPLAY DEVICE, AND METHOD FOR DRIVING SAME

摘要

The purpose of the present invention is to suppress the fluctuation of a data line voltage that occurs when an analog voltage signal is sampled and held in a data line in a display device provided with a current-driven display element. Transistors SWr, SWg, SWb of demultiplexers 252 are successively switched on, each for a prescribed period, in the selection period of a write control line SW_LR(i). In the period when the transistor SWr is switched on, an analog video signal Dj from a data voltage output unit circuit 211d is applied to a data line SLrj and a pixel circuit 50r. When the transistor SWr is then switched off, the voltage held by the data line SLrj decreases below the voltage of the analog video signal Dj due to a parasitic capacitance Cssdr. However, the voltage of a voltage fluctuation compensation line G3_Cnt(i) changes from a low level to a high level within the selection period. This causes the voltage of the data line SLrj to rise via a capacitor Ccnt, and the decrease in voltage to be compensated for.