Patent ID: 6191767
Filing Date: 2001-02-20
Classification: G09G

Abstract:
A matrix type image display device, comprising:a Y direction driving circuit for providing a scanning electrode with a selected voltage at each one horizontal scanning period;an analog/digital converter circuit for receiving an analog image data input signal and converting said analog image data into digital multi-tone image data;voltage generating means for generating a plurality of tone voltages;a serial latch circuit for serially latching said digital multi-tone image data;a parallel latch circuit for latching in parallel the serially latched digital multi-tone image data and holding said parallel latched digital multi-tone image data during one horizontal scanning period;decoder means for converting said parallel latched digital multi-tone image data into voltage selecting data;voltage outputting means for receiving said tone voltages and said voltage selecting data, and for outputting only one of said tone voltages having a constant voltage level as multi-tone image data-in accordance with said voltage selecting data during one horizontal scanning period, wherein each of said tone voltages when output by said voltage output means has a constant voltage level for one horizontal scanning period; anda matrix display panel which receives said multi-tone image data corresponding to said one of said tone voltages output from said voltage outputting means in said one horizontal scanning period and displays a multi-tone image based on said multi-tone image data.