| 摘要 |
PURPOSE:To raise a response speed and to obtain a sharp display by sealing coloring matter molecules having the same orientation as liquid crystal molecules in an inverting cell of a negative-positive inversion type liquid crystal display device consisting of a TN liquid crystal cell where a transmission colored reflective plate is arranged. CONSTITUTION:In case of negative display where a display cell 1 is driven in the state where an electric field is applied across common electrodes 10a and 10b of an inverting cell 10, an optically rotatory polarization action does not act the part of a display electrode 1b and incident light passes this part as it is, and a color display due to a semi-transmission colored plate 9 appears in a black background. In case of positive display where the electric field of the inverting cell 10 is cut off, the display appears in black; and since the light absorbing action due to coloring matter molecules 12b is increased, the coloring phenomenon due to optically rotatory dispersion of the liquid crystal cell is eliminated, and the exit light has a background of mixed color of the colored reflective plate 9 and coloring matter molecules 12b, and thus, a sharp display is obtained. |
