Patent ID: 7245277

Claim:
An active type display panel comprising a plurality of data lines, a plurality of scan lines mutually intersecting said plurality of data lines, a plurality of pixel sections which are formed at respective intersection points of the data lines and the scan lines and each include a series circuit in which a light emitting element and a drive element which supplies a drive current to said light emitting element are connected in series, and a pair of power supply lines which connect the series circuits of said plurality of pixel sections in parallel; wherein each of said plurality of pixel sections further comprises a switch element of which one end is connected to a point connecting said light emitting element and said drive element, and a pixel controller which activates said drive element in accordance with an input signal on a corresponding data line during a scanning period to supply a drive current of a level corresponding to the input signal to said light emitting element, and wherein said display panel further comprises for each of the data lines: a switching portion which supplies a reference current to the light emitting element through said switch element during a first time period of the scanning period and halts the supply of said reference current in a second time period which remains in the scanning period to permit the activation of the drive element; a holding portion which holds a voltage across the terminals of said light emitting element through said switch element during said first time period; a comparator which generates, during the second time period, a correction voltage corresponding to the difference between the voltage held in the holding portion and the voltage across the terminals of said light emitting element; and an outputting portion which supplies the correction voltage to the corresponding data line during said second time period.