Lg Display Co., Ltd.

Chul-Kwon Lee

Ho-Chul Lee

Ji-Hee Song

Ji-Hwan Kim

Se-Ho Lim

Disclosed are a display device and a compensation method thereof for preventing and compensating for deterioration of pixels using average data of stress for each pixel. The display device includes a display panel comprising a plurality of pixels provided thereon and configured to display an image, a display driver configured to output a driving signal for driving the display panel, a timing controller configured to generate stress data by converting grayscale values included in image data into stress values, to accumulate the stress data for each pixel, to calculate average data for each pixel corresponding to an accumulated number of times, to determine a compensation value by performing lossless and lossy compression and restoration on the average data in a regular region and an irregular region, respectively, and to provide the compensation value to the display driver.

Display device and compensation method thereof

The present disclosure relates to an organic light emitting display device. The device includes, among others, a controller including a data compensator configured to accumulate stress data applied to organic light emitting diodes (OLEDs) on the basis of input image data, to generate accumulated stress data under a condition for recovery of accumulated loss in a loss region, to compress and restore the accumulated stress data in a lossless manner and a loss manner to determine a compensated value and to output the compensated value. Accordingly, it is possible to estimate previous loss data on the basis of new image data to be currently accumulated, recover loss and accumulate data to prevent accumulation of loss and efficiently compensate for afterimage due to deterioration of OLEDs to extend the period of use.

Organic light emitting display device and compensation method therefor

An electrophoresis display and a driving method thereof are disclosed. An electrophoresis display includes a display panel comprising a plurality of pixel cells to display an image, a data driving unit supplying a pixel voltage to a plurality of data lines provided in the display panel, a common voltage generating unit generating a common voltage swinging to reverse electric potential and supplying the common voltage to a common electrode of the display panel, and a timing control unit generating a data control signal and a common voltage control signal and controlling a driving timing of the data driving unit and the common voltage generating unit.

Growing community of inventors

Gimpo-si, South Korea

Chul-Kwon Lee