| 摘要 |
PROBLEM TO BE SOLVED: To provide a projection type display device having a significantly improved contrast ratio of a projected image. SOLUTION: The projection type display device is equipped with a light source 30, a means 39 of illumination optics, a means 42 for color separation optics, liquid crystal light valves such as liquid crystal panels 60, 61, 62, a means 72 of color synthesis optics, a projection lens 73 and optical phase compensation plates 57, 58, 59 disposed between the polarizing films 51, 52, 53 and the liquid crystal panels 60, 61, 62, respectively, so as to compensate the residual phase difference caused by the birefringence of the liquid crystal layers in a black display mode. |
