| 摘要 |
PROBLEM TO BE SOLVED: To eliminate reflection and parallax and coloration and to obtain a wide field angle and sufficient lightness by making linearly polarized light incident for light display, and obtaining scattered light on a projection surface by passing the same polarized component with the incident light. SOLUTION: When no voltage is applied, liquid crystal 14 and a liquid crystal high polymer 15 which has set are nearly equal in refractive index to ordinary light and extraordinary light. Consequently, a light transmission state with set retardation is entered and there is no scatter. At this time, the same operation with only normal liquid crystal is obtained and circularly polarized light is obtained. When a voltage is applied, only the liquid crystal is oriented at right angles to electrodes 10 and 7, so the refractive index of the liquid crystal becomes nearly equal to the ordinary light refractive index, the refractive index difference from the liquid crystal polymer increases, and the display element enters unscattered light (linearly polarized component) and scattered state, so that the scattered light is held in a polarized state. Therefore, the majority of unscattered light and scattered light can pass through the polarizing element 4, so that the display state of this device will be a light state. |
