AMOLEDs With a Pixel-Driving Architecture for Eliminating Crosstalk

A pixel-driving architecture for high-resolution active-matrix organic light-emitting diodes (AMOLEDs)-which eliminates crosstalk-is proposed. The proposed architecture utilizes the fact that the hysteresis characteristic of low-temperature-polysilicon thin-film transistors (TFTs) can be controlled by negative bias. The high-amplitude negative-bias precharge in the architecture can suppress hysteresis in one frame length by means of a simple pixel circuit composed of three TFTs and one capacitor. The result of applying this architecture is a high-resolution AMOLED that generates no crosstalk. A 3.0-in 202 × 267-ppi full-color panel based on this pixel-driving architecture was developed, and it was confirmed that this panel produces moving images that are free of crosstalk.