Digital drive of AMOLED

Objective: Instead of analog driving as with state of the art technology, the driving transistor of the pixel circuit is operated in switch mode. The variation and the drift of the TFT transistor parameters are no more an issue, so that high yield and simple process will be enabled. The voltage drop on the driving transistor is due to the switch mode very low, so that the power consumption of the AMOLED panel is reduced by 35%. The challenges are artifacts due to the non-uniform thermal distribution, trace resistance and so on. We work on method decomposing the image into binary subfarmes of which the generated light distribution are summed up to the image desired.