Abstract
External compensation approaches, using source drivers to sense and compensate the different degradation of array pixels, have been proposed for driving active matrix light emitting diode (AMLED) displays. With external compensation, much simpler pixel circuits are able to be adopted for higher manufacturing yield, and more room to improve resolution and integrate added functions. This brief proposed a displaying-synchronous open-loop (DSOL) external compensation method with a simple pixel circuit design. The sensing and compensation is performed synchronously during several continuous display frames with normal displaying. A display performance simulation flow is developed to verify the driving method. The simulation results on single pixels and overall displays with various input images and videos prove the capability of the proposed DSOL method for compensating the image quality degradation without affecting normal displaying.
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