Patent ID: 8953001
Filing Date: 2015-02-10
Classification: G09G

Abstract:
1. A method of digital-driving an organic light emitting display device that divides one frame into a plurality of sub-frames, the method comprising: calculating a total number of scan operations, which are to be performed during the frame, based on a number of scan-lines and a number of the sub-frames, the calculating the total number of the scan operations including setting the total number of the scan operations as a value that is generated by multiplying the number of the scan-lines by the number of the sub-frames; setting an emission time of each of the sub-frames based on a gray level maximum value and the total number of the scan operations, the setting the emission time of the each of the sub-frames including setting the shortest emission time among of the emission times of the sub-frames as M horizontal scan intervals, where M is a positive integer, when a value that is generated by multiplying the gray level maximum value by M is approximate to the total number of the scan operations; modifying the emission times of the sub-frames by permitting errors to the emission times of the sub-frames to control a sum of the emission times of the sub-frames to be equal to the total number of the scan operations; and sequentially shifting each sub-frame scan timing of the scan-lines by N horizontal scan intervals, where N is the number of the sub-frames.