Patent ID: 8436793

Claim:
A light emitting apparatus comprising a pixel circuit and a driving circuit which drives the pixel circuit, wherein the pixel circuit includes: a driving transistor which generates a driving current; a light emitting device of which gradation is determined depending on the driving current, the light emitting device having an anode; a light emission control transistor which is arranged between the driving transistor and the anode; a discharge transistor which is arranged between the anode and an electric supply line; a capacitor device which has a first electrode connected to a gate of the driving transistor and a second electrode; and a first switching device which is interposed between the gate and a drain of the driving transistor, the driving circuit sets the light emission control transistor to be in an OFF-state while setting the first switching device to be in an ON-state so as to make a voltage between the gate and the source of the driving transistor be asymptotic to a threshold voltage in a compensation period, the driving circuit sets the first switching device to be in the OFF-state so as to set a potential of the gate of the driving transistor to be a potential corresponding to specified gradation of the light emitting device in a writing period after the compensation period, the driving circuit sets the light emission control transistor and the discharge transistor to be in the ON-state so as to flow a current through a path leading to the electric supply line through the light emission control transistor and the discharge transistor in a discharge period after the compensation period, the driving circuit sets the discharge transistor to be in the OFF-state while setting the light emission control transistor to be in the ON-state so as to supply the driving current to the light emitting device in a light emission period after the discharge period, the pixel circuit being arranged between a first power supply line to which a first potential is supplied and a second power supply line to which a second potential lower than the first potential is supplied, the potential supplied to the electric supply line being set such that a potential of the anode in the discharge period is lower than a potential which is higher than the second potential by a threshold voltage of the light emitting device, and the potential supplied to the electric supply line not being equal to the second potential.