Study of high tolerant pixel structure due to mispatterning of electrodes for the fringe-field switching liquid crystal display

A homogenously aligned liquid crystal device driven by fringe-electric field named as fringe-field switching mode, are being widely used for all kinds of liquid crystal displays due to its excellent wide viewing angle and high transmittance characteristics. One of the characteristics is the voltage-dependent transmittance (V-T), which strongly depends upon the pixel electrode width and distance between them. As a result, if pattern size of the pixel electrode at different positions is not the perfectly matched, the non-uniformity in transmittance does occur because field intensity to rotate liquid crystal would not be same at each and every pixel electrode. In this work, correlation between the size of electrode pattern and V-T characteristic has been carried out to get an optimized size of the electrode pattern in order to minimize the non-uniformity in the transmittance.