We use circuit simulation in order to explain the causes of crosstalk and to quantify the consequences. This work analyzes how crosstalk arises from electrode resistance, pixel leakage current, and the location of faulty pixels.
All factors influence both image uniformity and the power consumption of the display.
The devices are relatively easy to make, because they consist of an electroluminescent layer sandwiched between an anode, usually transparent, and a cathode. A passive matrix display results by patterning the anode into columns and the cathode into rows to form an array of pixels from the intersections between the cathode and anode electrodes. Applying a positive bias to one anode and a negative bias to one cathode causes light emission from the pixel shared by the two electrodes. In many cases, activating one pixel influences light emission from one or more other pixels. The crosstalk has several origins.