Patent ID: 6853384
Filing Date: 2005-02-08
Classification: G09G

Abstract:
1. A liquid crystal display device which carries out tone display with pixels by applying a tone voltage according to tone data to each pixel in each frame, comprising: a converter for converting tone data of a display frame to correction tone data based on the tone data of the display frame and tone data of an immediately preceding frame; a driver for applying the tone voltage to the pixels based on the correction tone data obtained in said converter; a liquid crystal cell, which makes up the pixels, for realizing tone display by the applied tone voltage, wherein said converter stores beforehand defined tone data which is specified by the tone data of the display frame and the tone data of the immediately preceding frame, and said converter generates the correction tone data based on the specified defined tone data; wherein said converter specifies the defined tone data based on upper digits of the tone data of the display frame and upper digits of the tone data of the immediately preceding frame, said converter converting the tone data of the display frame by replacing the upper digits of the tone data of the display frame with the specified defined tone data, and generating the correction tone data base on a result of conversion; and wherein said converter converts the upper digits of the tone data of the display frame based on the upper digits of the tone data of the display frame and the upper digits of the tone data of the immediately preceding frame, and converts lower digits of the tone data of the display frame based on the lower digits of the tone data of the display frame and lower digits of the tone data of the immediately preceding frame, and generates the correction tone data by adding the converted upper digits and the converted lower digits of the tone data of the display frame.