Switched mode digital logic method, system and apparatus for directly driving LCD glass

摘要

A digital circuit having a plurality of digital outputs coupled to backplane(s) and segments of a LCD glass in combination with a software program functions as a "switched mode" LCD driver. Alternating in polarity but equal in magnitude RMS voltage pulses are applied between segments and backplane(s) of the LCD glass. The voltage amplitude and time duration of these pulses determine whether a LCD segment is opaque or clear and the overall contrast of the LCD.