ORGANIC LIGHT EMITTING DISPLAY DEVICE AND METHOD FOR DRIVING THE SAME

摘要

Disclosed is an organic light emitting display device that displays images with uniform luminance by compensating degradation of organic light emitting diode, and a method for driving the same. The device comprises a display panel with sub-pixels, each sub-pixel having an organic light emitting diode for emitting light; a memory which stores accumulated data of each sub-pixel; and a panel driver which calculates an individual compensation gain value for each sub-pixel and a global compensation gain value for all the sub-pixels in common based on the accumulated data of sub-pixel, modulates input data for each sub-pixel through the individual compensation gain value and global compensation gain value, converts the modulated data into a data voltage, and accumulates the modulated data on the accumulated data of the corresponding sub-pixel and stores the obtained data in the memory.

主权项

1. An organic light emitting display device comprising:
a display panel having a plurality of sub-pixels, wherein each sub-pixel has an organic light emitting diode which emits light by a data current based on a data voltage; a memory which stores accumulated data of each sub-pixel therein; and a panel driver which calculates an individual compensation gain value to be applied to each sub-pixel, and a global compensation gain value to be applied to all the sub-pixels in common on the basis of the accumulated data of each sub-pixel stored in the memory, modulates input data to be supplied to each sub-pixel by the use of individual compensation gain value and global compensation gain value, converts the modulated data into the data voltage, and accumulates the modulated data on the accumulated data of the corresponding sub-pixel and then stores the obtained data in the memory.