Multiple-tone display system

A liquid crystal display device for providing multiple-tone representations, said liquid crystal display device comprising:

• a data driver for receiving display data and providing a display voltage corresponding with the display data;
• a scan driver for providing a selecting voltage;
• and
• a liquid crystal panel having a plurality of pixels arranged in a matrix, said liquid crystal panel connected to said data driver and to said scan driver to supply the display voltage from said data driver to a pixel of said liquid crystal panel selected in accordance with the scan voltage,
• wherein the selected pixel of said liquid crystal panel displays a tone corresponding to the display voltage, and wherein the intensity of an intermediate tone between the maximum tone corresponding to the maximum display voltage and the minimum tone corresponding to the minimum display voltage is at least as great as the intensity on a straight line linking the intensity of the maximum tone and the intensity of the minimum tone when the intensities as a function of the tones are plotted on a graph having the tones along the graph abscissa and the intensities on a logarithmic scale along the graph ordinate.

A liquid crystal display device for providing multiple-tone representations, said liquid crystal display device comprising:

• a data driver for receiving display data and providing display voltages corresponding with the display data;
• a scan driver for providing a selecting voltage;
• and
• a liquid crystal panel having a plurality of pixels arranged in a matrix, said liquid crystal panel connected to said data driver and to said scan driver to supply the display voltages to a line of pixels of said liquid crystal panel selected in accordance with the scan voltage,
• wherein the selected line of pixels of said liquid crystal panel displays tones corresponding to the display voltages, and wherein the intensities of intermediate tones between the maximum tone corresponding to the maximum display voltage and the minimum tone corresponding to the minimum display voltage forms a line above a straight line linking the intensity of the maximum tone and the intensity of the minimum tone on a graph having the tones along the graph abscissa and the intensities on a logarithmic scale along the graph ordinate.

A liquid crystal display device for providing multiple-tone representations, said liquid crystal display device comprising:

• a data driver for receiving display data, and providing a display voltage corresponding with the display data;
• a scan driver for providing a selecting voltage;
• and
• a liquid crystal panel having a plurality of pixels arranged in a matrix, said liquid crystal panel connected to said data driver and to said scan driver to supply the display voltage to a pixel of said liquid crystal panel selected in accordance with the scan voltage,
• wherein the selected pixel of said liquid crystal panel displays a tone corresponding to the display voltage, and wherein a intermediate intensity between the maximum intensity and the minimum intensity which the liquid crystal panel is capable of showing is greater than the intensity on a straight line linking the maximum intensity and the minimum intensity when the intensities as a function of the tones are plotted on a graph having the tones along the graph abscissa and the intensities on a logarithmic scale along the graph ordinate.