Elimination of the data-dependent defects by doubling the frequency of driving signals for cholesteric LCDs

摘要

Using the standard waveform composition method for 2+2 dynamic driveudschemes results in the dependence of image contrast on image data-content. In this paper,udan implementation of this standard method with doubling the frequency of drivingudsignals is proposed. It allows to equalize the effective selection time for all display’sudpixels independently of preceding and following non-selected pixel voltage waveforms.udThus, data-pattern-dependent defects at the passive-matrix addressing of cholestericudliquid crystal displays are fully eliminated.