Automated characterisation system for liquid crystal displays

A complete program suite for the automated characterisation of liquid crystal displays (LCDs) has been developed in the Lab View 7.1 environment. It includes routines for basic electro-optical characterisation, i.e. generation of transmission-voltage curves applying triangular waveforms while measuring the switching voltages. And it provides an easily accessible interface for design of arbitrary waveforms, both for active matrix addressing (often necessary in nematic LCDs) and for passive matrix addressing (applicable to ferro-and antiferro-electric LCDs as well as some nematic LCDs). The software includes automated methods for generation of dynamic grey scales, for measurement of grey-grey transition times and for analysis of image sticking.