| 摘要 |
PROBLEM TO BE SOLVED: To obtain a color liquid crystal display device that has a good visual angle characteristic and is a double refractive system, by combining a phase plate to the display device, which utilizes a comb-shaped electrode. SOLUTION: A lower polarizing plate 11 and a reflection plate 14 are joined to the outside of a first substrate 1 and a phase plate 13 and an upper polarizing plate 12 are joined to the outside of a second substrate 9. In order to avoid the reversed rotation of the liquid crystal molecules while a voltage is applied, the directions of the long axes of liquid crystal molecules 15 in a no voltage applied condition are set to a few degree clockwise rotation. The polarization axis of the plate 11 is arranged to make an approximately 45-degree angle with respect to the long axis direction of the molecules 15 and the polarization axis of the plate 12 is arranged to make an approximately 90-degree angle with respect to the ploarization axis of the plate 11. The stretching axis of the plate 13 is arranged to make an approximately 90-degree angle with respect 10 the long axis direction of the molecules 15. The molecules 15 are rotated while maintaining the directions that are approximately parallel to the substrate 1, the changes in the phase difference values by a visual angle are made small resulting in a less color change by a visual angle. Note that it is preferred to use the NRZ phase plate which is close to Nz=0.5. |
