Method for setting stereoscopic image data at a stereoscopic image display system by shifting data to a vertical direction

A stereoscopic image display system comprising:

• a light beam controller having a long axis that is tilted relative to a plurality of vertical lines at a predetermined tilted angle, wherein said light beam controller is configured to concentrate light beams emitted from a pixel matrix at a viewing position, wherein said pixel matrix includes a plurality of sub-pixels disposed at intersections of horizontal lines and vertical lines;
• a data conversion circuit for converting stereoscopic image data to be set at a home position of said pixel matrix in order to concentrate light at a first viewing position, and to be set at a second position in order to concentrate light at a second viewing position corresponding to left-right direction of a viewer, wherein said second position is shifted from said home position by one row of said horizontal lines in a direction of said vertical lines corresponding to said up-down direction of said viewer, and by less than one sub-pixel distance in a direction of said horizontal lines corresponding to said left-right direction of said viewer;
• and
• a viewing position detection circuit that detects a viewing position of said viewer, wherein said data conversion circuit determines a direction and the number of rows of said horizontal lines need to be shifted in response to a detected viewing position rom said viewing position detection circuit.