Abstract
The variations in the threshold voltage and the mobility of In–Ga–Zn–O thin-film transistors (TFTs) were significantly compensated by the proposed compensation method. The luminance difference at each pixel in the large-size organic light-emitting devices (OLEDs) was dramatically decreased less than 10% due to the stich mural and the applied data voltage difference at low gray scale level. Luminance uniformities of up to 99% were achieved for all gray levels of the OLEDs by using the external circuit and optical compensation with angle calibration.
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