Patent ID: 8207918

Claim:
An image display device, comprising: a plurality of pixels each including a light-emitting element having a first end and a second end; a plurality of signal lines for inputting image signals to the plurality of pixels; a signal driver section for supplying the image signals to the plurality of signal lines; and a step signal generation circuit for supplying a step signal to each of the plurality of signal lines, each of the plurality of pixels including: a driver transistor which includes a control electrode, a first electrode, and a second electrode, for driving the light-emitting element based on corresponding one of the image signals; a capacitor element connected between a corresponding one of the plurality of signal lines and the control electrode of the driver transistor; and a reset switch element connected between the control electrode and the second electrode of the driver transistor, the first electrode of the driver transistor being applied with a first power supply voltage, the first end of the light-emitting element being applied with a second power supply voltage, wherein: a frame period includes: a set period; and a write period which follows the set period, for writing the image signals to the plurality of pixels on each of a plurality of display lines; during a first period of the set period, the reset switch element of each of the plurality of pixels on the corresponding display line is turned on to converge a voltage at the control electrode of the driver transistor of each of the plurality of pixels on the corresponding display line to a predetermined voltage, and a step signal having a first voltage level is supplied from the step signal generation circuit to each of the plurality of signal lines; and during a second period of the set period, the reset switch element of each of the plurality of pixels on the corresponding display line is turned off, and a step signal having a second voltage level different from the first voltage level is supplied from the step signal generation circuit to each of the plurality of signal lines, to input, to the control electrode of the driver transistor of each of the plurality of pixels on the corresponding display line, a characteristic value set voltage which is one of a first set voltage and a second set voltage wherein: the first set voltage is a voltage lower in potential than the second power supply voltage when the first power supply voltage is higher than the second power supply voltage, or a voltage higher in potential than the second power supply voltage when the first power supply voltage is lower than the second power supply voltage; the second set voltage is a voltage lower in potential than a minimum voltage in a voltage range supplied from the signal driver section when the first power supply voltage is higher than the second power supply voltage, or a voltage higher in potential than a maximum voltage in the voltage range supplied from the signal driver section when the first power supply voltage is lower than the second power supply voltage.