| 摘要 |
The orientation of a reflection type liquid crystal display device is improved to widen the field angle. A panel is provided with a transparent first substrate located on the external light incident side, a second substrate located on the opposite side bonded to the first substrate with interposition of a predetermined space, a twist-oriented nematic liquid crystal layer supported in the space between both substrates, and electrodes for applying a voltage to the nematic liquid crystal layer formed on both substrates. The nematic liquid crystal layer remains in twist orientation and functions as a quarter wavelength layer to allow the external light to pass in cooperation with the deflection plate and the quarter wavelength plate for displaying white while no voltage is applied. On the other hands the nematic liquid crystal layer is converted to perpendicular orientation and loses the function of a quarter wavelength layer not to allow the external light to pass for displaying black. The orientation direction 3U of nematic liquid crystal molecules which are in contact with the first substrate is prescribed in a range of 168.5+/-10 degrees with respect to the upward direction of the screen of the panel, and the orientation direction 3L of nematic liquid crystal molecules which are in contact with the second substrate is prescribed in a range of 51.5+/-10 degrees. |
