Patent ID: 7432919

Claim:
A display device comprising a display panel having an arrangement of a plurality of pixels and a control unit for supplying data voltage or data current corresponding to a video signal fed from the outside to each pixel of the display panel, each pixel of the display panel comprising a display element operable to luminesce when supplied with current and drive means for supplying to the display element a drive current corresponding to the data voltage or the data current from the control unit, the control unit comprising: deriving means for deriving the sum of currents to be passed through each pixel of the display panel based on values of the video signals for each pixel of the display panel, current measuring means for measuring the total quantity of currents to have been passed through the pixels of the display panel, and calculation processing means for correcting the video signals for each pixel of the display panel based on a derived value obtained by the deriving means and a measurement value obtained by the current measuring means, wherein the deriving means comprises accumulating means for accumulating the values of the video signals for each pixel of the display panel, and conversion means for converting an accumulated value obtained by the accumulating means into the sum of currents to be passed through each pixel of the display panel, the calculation processing means correcting the video signals based on the conversion value obtained by the conversion means and the measurement value obtained by the current measuring means.