Video display method and video display apparatus

A video display method using a display apparatus for displaying a glasses free 3D video, the display apparatus including a display unit in which sub-pixels constituting pixels are arranged in a matrix, the video display method comprising:

• (a) displaying, in a row of sub-pixels of the display unit, a video in which a left-eye video and a right-eye video are disposed alternately in units of n sub-pixels, where n is an integer equal to or greater than 2;
• and
• (b) detecting a distance from the display unit to a viewer and a position of the viewer in a horizontal direction, wherein
• in step (a), display positions of the left-eye video and the right-eye video in the row of sub-pixels are shifted by a predetermined number of sub-pixels, based on the detected distance from the display unit to the viewer and the detected position of the viewer in the horizontal direction.

A video display apparatus for displaying a glasses free 3D video, the video display apparatus comprising:

• a display unit in which sub-pixels constituting pixels are arranged in a matrix;
• a control unit configured to display, in a row of sub-pixels of the display unit, a video in which a left-eye video and a right-eye video are disposed alternately in units of display each unit made up of n sub-pixels, where n is an integer equal to or greater than 2;
• and
• a range detecting unit configured to detect a distance from the display unit to a viewer, wherein
• the control unit is configured to:
• vary, as a function of the detected distance, the number of sub-pixels of at least one unit of display, among a plurality of units of display included in the row of sub-pixels, if the detected distance is different from a predetermined distance;
• increase the number of sub-pixels of the at least one unit of display if the detected distance is less than the predetermined distance;
• and
• reduce the number of sub-pixels of the at least one unit of display if the detected distance is greater than the predetermined distance.

A video display apparatus for displaying a glasses free 3D video, the video display apparatus comprising:

• a display unit in which sub-pixels constituting pixels are arranged in a matrix;
• a control unit configured to display, in a row of sub-pixels of the display unit, a video in which a left-eye video and a right-eye video are disposed alternately in units of n sub-pixels, where n is an integer equal to or greater than 2;
• and
• a detection unit configured to detect a distance from the display unit to a viewer and a position of the viewer in a horizontal direction, wherein
• the control unit is configured to shift, by a predetermined number of sub-pixels, display positions of the left-eye video and the right-eye video in the row of sub-pixels, based on the detected distance from the display unit to the viewer and the detected position of the viewer in the horizontal direction.