Method of compensating gamma reference voltages

摘要

In a method of compensating gamma reference voltages includes setting a plurality of emission signal on-duty ratios that have different values in a range from 0% to 100%, setting a plurality of data offsets for the emission signal on-duty ratios and each of the data offsets being set based on a color shift, the color shift being caused according to the emission signal on-duty ratios, generating a plurality of compensation gamma reference voltages by multiplying a gamma reference voltage by the data offsets, and applying the compensation gamma reference voltages to an organic light emitting display panel in dimming ranges that include the emission signal on-duty ratios, respectively.

主权项

1. A method of compensating gamma reference voltages, the method comprising:
setting a first emission signal on-duty ratio, a second emission signal on-duty ratio, and a third emission signal on-duty ratio that have different values in a range from 0% to 100%, a value of the first emission signal on-duty ratio being greater than a value of the second emission signal on-duty ratio, the value of the second emission signal on-duty ratio being greater than a value of the third emission signal on-duty ratio; setting data offsets for the first through third emission signal on-duty ratios, each of the data offsets being based on a color shift, the color shift being caused according to the first through third emission signal on-duty ratios; obtaining an average data offset by calculating an average of the data offsets; generating a first compensation gamma reference voltage corresponding to the first emission signal on-duty ratio by multiplying a gamma reference voltage by the average data offset; generating a second compensation gamma reference voltage corresponding to the second emission signal on-duty ratio by multiplying the first compensation gamma reference voltage by the average data offset; generating a third compensation gamma reference voltage corresponding to the third emission signal on-duty ratio by multiplying the second compensation gamma reference voltage by the average data offset; and applying the first through third compensation gamma reference voltages to an organic light emitting display (OLED) panel in dimming ranges that include the first through third emission signal on-duty ratios, respectively.