An OLED driving currents compensation method with a CCD camera

In this work, we propose a promising approach that compensates OLED driving currents for large-sized OLED displays. With a CCD camera, pixel-to-pixel brightness differences were determined, and applied to compensate OLED driving currents for the purpose of achieving high luminance uniformity. We also implemented the proposed method as a system comprising a FPGA-based timing controller (T-con) and softwares, and the proposed method shows improved luminance uniformity over 20% at the gray level of 32/256.