Testing of flat panel displays (FPDS) during manufacture is effected using an E-beam testing system operating in conjunction with unique signal processing and analysis. The E-beam testing system stimulates secondary electron emission by the thin film transistors (TFTs) of the FPD which is proportionate...http://www.google.com.au/patents/US5982190?utm_source=gb-gplus-sharePatent US5982190 - Method to determine pixel condition on flat panel displays using an electron beam
