In a light emitting display panel 10, a large number of light emitting display pixels 10a are arranged in a matrix pattern, and a monitoring element Ex is provided therein which can extract a voltage which corresponds to the forward voltage of EL elements E1 on the display panel. By a signal from a current consumption detection section 14 which detects current consumption in the light emitting display panel 10, a drive ratio control section 15 performs ON/OFF control of a transistor Tr3 which is connected in series to the monitoring element Ex to control current provided from a constant current circuit. Thus, progression rates of agings of the monitoring element Ex and the EL elements E1 arranged in the display panel can be controlled to roughly coincide with each other, and a power loss generated in a light emission drive transistor Tr2 in each pixel 10a can be restrained as much as possible.