Patent ID: 7839363

Claim:
An active matrix display device, comprising: a) a plurality of pixels and a plurality of data lines, each pixel connected to one of the data lines for receiving a gradation data current from the corresponding data line and including an EL element for emitting light in response to a drive current, a driver TFT for providing the drive current to the EL element, and a gate TFT for providing the gradation data current to the driver TFT to cause it to provide the drive current; b) a data driver having: i) two separate sets of voltage-current conversion circuits for performing voltage-current conversion on an input video signal to supply corresponding gradation data currents; and ii) plurality of output switching circuits, each connected to one of the data lines and to one respective voltage-current conversion circuit in each of the sets for selectively connecting the output from one of the corresponding voltage-current conversion circuits to the data line to supply the corresponding gradation data current to one of the corresponding pixels, with timing being adjusted at least either for each frame or for each line.