Patent ID: 7196677

Claim:
A multi-picture simultaneous display device comprising: a mixed picture display part for displaying two display modes via a switching operation per field, a first display mode displaying one piece of video information on an entire area of a display screen, and a second display mode displaying the other pieces of the video information on a plurality of divided areas of the display screen in such a manner as to assign the other pieces of the video information to the respective divided areas which are divided by a rule; a first picture separating mechanism disposed on the mixed picture display part, and defining a first polarizing element; a plurality of optical means each of which is disposed in such a manner as to form a predetermined angle relative to the mixed picture display part; and a second picture separating mechanism for separating a picture displayed on the mixed picture display part and on the plurality of the optical means so as to allow the picture to be viewable, the second picture separating mechanism defining a second polarizing element which is different in a polarizing direction than that of the first polarizing element of the first picture separating mechanism; and wherein, the polarizing direction of one of the first picture separating mechanism and the second picture separating mechanism is switched synchronously with the switching between the first display mode and the second display mode.