New Pixel Circuits for Controlling Threshold Voltage by Back-gate Bias Voltage using Crystalline Oxide Semiconductor FETs

摘要

We devised a threshold voltage compensation pixel circuit using back-gate bias voltage. Variations in threshold voltage can be reduced to 10% while improving the saturation characteristics of a driving transistor. We fabricated a 5.29-in Quad-VGA OLED display using this pixel circuit.