In this paper a new three-dimensional (3D) liquid crystal display (LCD) display mode based on backlight control is
presented to avoid the left and right eye images crosstalk in 3D display. There are two major issues in this new black
frame 3D display mode. One is continuously playing every frame images twice. The other is controlling the backlight
switch periodically. First, this paper explains the cause of the left and right eye images crosstalk, and presents a solution
to avoid this problem. Then, we propose to play the entire frame images twice by repeating each frame image after it was
played instead of playing the left images and the right images frame by frame alternately. Finally, the backlight is
switched periodically instead of turned on all the time. The backlight is turned off while a frame of image is played for
the first time, then turned on during the second time, after that it will be turned off again and run the next period with the
next frame of image start to refresh. Controlling the backlight switch periodically like this is the key to achieve the black
frame 3D display mode. This mode can not only achieve better 3D display effect by avoid the left and right image
crosstalk, but also save the backlight power consumption. Theoretical analysis and experiments show that our method is
reasonable and efficient.
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