Organic light emitting display device and method of driving the same to include a compensation strategy applied during different time periods

摘要

A method of driving an organic light emitting display device includes sensing characteristics of driving TFTs of pixels to generate sensing data at a power-on time when the organic light emitting display device is powered on, merging initial compensation data and the sensing data at the power-on time to compensate for the characteristics of the driving TFTs of all the pixels, displaying an image in a driving mode and sequentially sensing characteristics of driving TFTs of a plurality of pixels in units of one horizontal line in real time during a blank interval between frames, and sequentially compensating for the characteristics of the driving TFTs of the pixels in units of one horizontal line in real time by using a real-time sensing data generated by real-time sensing.

主权项

1. An organic light emitting display device, which includes a display panel including a plurality of pixels each including a pixel circuit for emitting light from an organic light emitting diode, the organic light emitting display device comprising:
a driving circuit unit including a data driver and a gate driver; a sensing unit configured to:
during a power-on period corresponding to when the display device is powered on following a release of the display device and before an image is displayed on the display panel for a power cycle, operate the data driver and the gate driver of the driving circuit unit in a sensing mode to sense characteristics of all the pixels of the display panel to generate sensing data based on the sensed characteristics; andduring a driving mode following the power-on period and within the same power cycle, sequentially sensing characteristics of driving thin film transistors(TFTs) of the plurality of pixels in units of one horizontal line in real time during a blank interval between image frames being displayed to generate real-time sensing data; a compensation data calculating unit in communication with the sensing unit and configured to:
load an initial compensation data generated based on an initial compensation performed before the display device is released;merge the sensing data and the initial compensation data to generate updated compensation data; andgenerate real-time compensation data based on the real-time sensed data; and a panel driving unit configured to:
supply data voltages compensated according to the updated compensation data during the power-on period and according to the real-time compensation data during the driving mode.