| 摘要 |
A projection type display device is provided to display high quality images. In the device, a WB-PBSW 2 is inclined to liquid crystal display devices 1r, 1b, 1g and has wire grids 2a parallel with a first substrate 11. One of directions of projection lines obtained by projecting the wire grids 2a on a second substrate 12 vertically, the one direction being directed to a direction where one extension surface of the polarization spectroscopic surface intersects with another extension surface of the second substrate when the one direction is turned in the counterclockwise direction by 90°, is defmed as X-axis. If the liquid crystal display devices 1r, 1b, 1g are a type of first twist (normal twist), device reference line vectors are located at 225° ± 10° in the counterclockwise direction in view from the first substrate 11. In case of a second twist (reverse twist) type, the device reference line vectors are located at 315° ± 10° in the counterclockwise direction in view from the first substrate 11. |
