Patent ID: 7295174

Claim:
A display unit comprising: a plurality of electron emission devices arranged in a matrix format; a plurality of scan lines arranged in a row direction and connected to the plurality of electron emission devices; a plurality of data lines arranged in a column direction and connected to the plurality of electron emission devices; a scan driver for supplying a selection signal for selecting a line of electron emission devices to the scan lines sequentially in the column direction; a data driver for supplying drive signals based on video data for driving the electron emission devices to each of the plurality of data lines; and a signal correction circuit for correcting each of the drive signals to be supplied to the plurality of data lines, wherein the signal correction circuit corrects the drive signals using a cumulative value of the video data corresponding to said drive signals, the signal correction circuit comprising: a first memory to sequentially store the video data corresponding to each of the data lines in a first direction, a second memory to store first correction data which is obtained by, for each data line, multiplying each of the video data read out from the first memory by a predetermined coefficient and then sequentially accumulating the multiplied data in a second direction opposite to the first direction, and a third memory to store second correction data as the cumulative value for each of the data lines, the second correction data being obtained by, for each data line, sequentially accumulating the first correction data read out from the second memory in the first direction.