| 摘要 |
In a TN LCD, a prism lens film and a wave lens film are disposed on the incoming and outgoing sides of a liquid crystal panel, respectively, to obtain an image wide in visual angle and good in its quality. Thus, outgoing light having a sharp directivity, can be obtained from light emitted from a surface illuminant and having a gradually varying directional property by the prism lens film. Further, with a louver film provided in front of the prism lens film, all the light traveling in the diagonal direction can be cut off so that substantially parallel light enter the liquid crystal panel. Since the light in which a variation in retardation is next to nothing, is diffused by the wave lens film, a wide visual-angle representation free of a dependence on the visual angle can be obtained. In order to prevent the image from being turned white due to the reflection of external light and obtain an image of satisfactory quality, which is high in contrast ratio, the front surface of the wave lens film is coated with a multilayer film. Further, both surfaces of the liquid crystal panel and the wave lens film, which are opposed to each other, are coated with multilayer films. Furthermore, an improvement in performance can be carried out by providing a louver film between the prism lens film and the liquid crystal panel. |
