Organic Polymer Light Emitting Display for Digital Mammography

摘要

We report on active matrix-organic polymer light-emitting displays (AM-OLEDs) based on a three hydrogenated amorphous silicon (a-Si:H) thin-film transistor (TFT) pixel electrode circuit that supplies a continuous output current to organic polymer light-emitting devices (OLEDs). The output current level drifts induced by either process variations or devices aging can be reduced in this design by adjusting the driver TFT operating point with the active resistor. Our first green light-emitting engineering prototype had a brightness of 120 cd/sq m and fill factor of about 45%.