Patent ID: 6858989

Claim:
A pixel driver circuit for driving an OLED pixel in an active matrix OLED display, comprising: a switch having an input, an output, and a control input which is coupled to a row select line of the display; a current driver TFT transistor having a gate coupled to the output of the switch, a drain coupled to the pixel, and a source coupled to a voltage source; a capacitor having an electrode coupled to the voltage source, and another electrode coupled to the current driver TFT transistor gate; and a toggle element having a first input, a second input, and an output, the output being coupled to the input of the switch and including a first toggle input and a second toggle input, the first toggle input being coupled to a data voltage and the second input being coupled to a reverse voltage, the toggle element alternately switching the output coupled to the input of the switch between the first toggle input and the second toggle input over a refresh period of the display.