Mismatch Modeling and Simulation Methodology for Predicting the Output Voltage Variation of an LCD Driver

This paper presents a new mismatch modeling and simulation methodology for predicting the output voltage variation of an LCD (liquid crystal display) driver. The new model is especially effective for MV (medium voltage) MOSFETs which have a drift resistance region in the source/drain areas on both sides of the gate electrode. The new model takes into account the effect of drift resistance on the mismatch properties of the threshold voltage and the current gain. As a result, the model shows high precision over a wide range of transistor sizes and bias conditions. Circuit level SPICE simulation results show a better prediction for the output voltage variation than previous approaches