Short Communication: Scanning Limitations of Twisted Nematic Display Devices

Alt and Pleshko1 have shown that the maximum number of scanned lines Nmax, in the case of multiplexing rms-responding liquid crystal devices, is directly dependent on the optical response vs. voltage curve of the device. In their analysis the rms-value of the on- and off-voltage is: $${\hat{\text{V}}}_{\text{on}}={\hat{\text{V}}}_{\text{th}}+{\hat{\Delta}},$$ $${\hat{\text{V}}}_{\text{off}}={\hat{\text{V}}}_{\text{th}}.$$