Liquid crystal display method and apparatus capable of making multi-level tone display

摘要

A liquid crystal display system capable of making a display of 2i+j (i, j: positive integers) kinds of tones display includes a frame rate control device for selecting one out of frame rate control data of 2j kinds in accordance with j-bit display data included in (i+j)-bit display data, i and j being positive integers, a multi-level tone pulse generator for generating display pulses of 2i+1 kinds including at least activation for display, inactivation for display, and intermediate display corresponding to an intermediate level, and a selection drive device for selecting a display pulse of one kind out of display pulses of 2i+1 kinds in accordance with the frame rate control data supplied from the frame rate control device and i-bit display data and applying the selected display pulse to a liquid crystal panel, the i-bit being different from the j-bit.