PROJECTION TYPE LIQUID CRYSTAL DISPLAY DEVICE AND PROJECTION TYPE STEREOSCOPIC DISPLAY DEVICE

摘要

PURPOSE: To provide a projection type liquid crystal display device constituted so that a black matrix is made inconspicuous and image quality is enhanced without extremely deteriorating the resolution of a projected picture and the occurrence of a moire fringe is reduced even when a screen on which microfabrication processing is periodically executed is used. CONSTITUTION: The projection type liquid crystal display device 1 is constituted of a light source 2, a parabolic mirror 3, a liquid crystal display element 4, a projection lens 5, a parallel plate-like glass 6 and a rotating mechanism 7. Then, the picture displayed on the element 4 is projected on the screen. The glass 6 is arranged in an optical path between the element 4 and the lens 5 so that the incident and emitting surface thereof becomes vertical to an optical axis. Since the picture projected on the surface of the screen is also vibrated at a high speed when the glass 6 is rotated and vibrated at a high speed by the rotating mechanism 7, brightness at a picture element part and at the part of the black matrix is averaged in terms of time and the black matrix is made inconspicuous. Besides, the moire fringe is not formed even when the screen on which a lenticular lens and the like is formed, is used.