AMOLED Reliability with a-Si TFT's in Normal vs. Inverted TFT/OLED Integration Scheme


An important technical issue associated with using a-Si for AMOLED displays is the direct voltage programming of the pixel by providing a constant current source to the OLED. Since only n-channel a-Si TFT's are available, this requires connecting the driver TFT to the OLED cathode rather than the OLED anode which is not conventionally possible without… (More)


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