REALIZATION OF VIDEO-RATE STN DISPLAY USING ROW VOLTAGE MODULATION METHOD

Active Addressing(AA) method has made video-rate STN displays possible [13 [2]. However, multi-gray, active addressed STN displays need high cost analog driver IC and consequently, redundant digital-analog conversion circuitry [11 [2]. Furthermore, complex computation for column signal is indispensable. If active addressed multi-gray display uses pulse height modulation (PHM), the additive virtual signal computation (square, square róot and summation) [3] is necessary. Therefore, it is difficult to realize video-rate STN-LCD's with simple configuration and low cost.