Display device and method for driving display device

A display device comprising (i) a transmissive display panel, (ii) a backlight that irradiates the display panel with light, and (iii) an inverter section that supplies a driving voltage to the backlight, in which a display is carried out by controlling an amount of transmission of the light with which the display panel is irradiated by the backlight,

• said display device, further comprising:
• a comparison process section that judges whether or not a voltage supplied to the inverter section is not less than a predetermined voltage required for normally driving the inverter section;
• a lighting state detection section that detects a lighting state of the backlight;
• and
• a backlight failure detection section that (i) judges whether or not the backlight has failed, in accordance with a judged result of the comparison process section and a detected result of the lighting state detection section and (ii) outputs a signal which varies according to its judged result,
• the backlight failure detection section outputting a backlight failure signal indicating that the backlight has failed, in a case where (i) the voltage supplied to the inverter section is not less than the predetermined voltage and (ii) the backlight is not lighting normally, and
• the backlight failure detection section outputting no backlight failure signal, in a case where the voltage supplied to the inverter section is less than the predetermined voltage.