Apparatus for improving yields and uniformity of active matrix oled panels

摘要

An apparatus for improving yields and uniformity of active matrix organic light emitting diode (AMOLED) panels mainly adds a ballast resistor between a drive transistor and an organic light emitting diode (OLED) of each pixel. The ballast resistor can prevent short circuit of the drive transistor or excessive drive current in the pixel, and prevent the voltage source and the common electrode from directly occurring short circuit together when the OLED has occurred short circuit thereby improve yields and uniformity of the panel.