Patent ID: 9549172
Date: 2017-01-17
CPC Classifications: H04N

Claim:
1. A stereoscopic image display device comprising: a display panel displaying a multi-view image in a three-dimensional (3D) mode; a switchable barrier provided on the display panel in order to separate the multi-view image to form a barrier in the 3D mode; a user position detecting unit outputting a user position data including a user position information indicating that a user moves from a first position to a second position by analyzing an image displayed on a front surface of the display panel photographed with a camera; a switchable barrier controlling unit calculating an average picture level of the multi-view image in the 3D mode, establishing an aperture ratio of the switchable barrier for display of the multi-view image according to the average picture level, and moving the switchable barrier based on the user position information indicating that the user moves from the first position to the second position while maintaining the established aperture ratio where the established aperture ratio for the multi-view image is constant regardless of the user moving between the first position and the second position; a switchable barrier driving unit supplying driving voltages to divided electrodes of the switchable barrier under a control of the switchable barrier controlling unit and supplying a common voltage to a barrier common electrode; and a display panel driving unit converting the multi-view image into data voltages to supply the data voltages to data lines of the display panel and sequentially supplying gate pulses synchronized with the data voltages to gate lines of the display panel.