Patent ID: 9601046
Date: 2017-03-21
CPC Classifications: G09G

Claim:
1. A brightness correcting system, comprising: a display unit comprising a plurality of pixels configured to emit light with brightness components corresponding to supplied image data, the display unit being divided into a plurality of sample regions, each of the plurality of sample regions having one representative pixel selected from among a plurality of pixels; a brightness measuring unit for measuring brightness values in the sample regions; a data driver for supplying the image data to the pixels; a controller configured to select one reference pixel from among the plurality of representative pixels of the plurality of sample regions; an offset value calculating unit for calculating offset values corresponding to respective differences between the brightness value of the one reference pixel and the brightness values of the representative pixels corresponding to the sample regions, and for linearly calculating offset values of remaining pixels of the pixels using the offset values of the representative pixels such that a difference between the offset values of a pair of adjacent ones of the pixels in a row or column of the pixels that comprises the representative pixels of adjacent ones of the sample regions is the same as a difference between the offset values of another pair of adjacent ones of the pixels in the row or column; and a data correcting unit for correcting the image data using the offset values of the pixels and supplying the corrected image data to the data driver, wherein the controller is configured to supply the same image data to the pixels to emit light, to set the brightness values of the sample regions that are measured by the brightness measuring unit as the brightness values of the representative pixels included in the corresponding sample regions, and to set the representative pixel having the smallest brightness value among the representative pixels as the one reference pixel.