Patent ID: 8803953

Claim:
A stereoscopic image display device, comprising: a display panel configured to include data lines, gate lines intersecting the data lines, and the pixels arranged in a matrix in pixel regions defined by the data lines and the gate lines; liquid crystal shutter glasses configured to have a left eye shutter and a right eye shutter which can be controlled electrically; a data driving circuit configured to supply left eye image data voltages to the data lines during a data addressing period set in an N-th (where N is a natural number) frame period and connects neighboring data lines with each other to make the data lines short-circuited during a black grayscale inserting period set in the N-th frame period, and supply right eye image data voltages to the data lines during a data addressing period set in a (N+1)-th frame period and connects neighboring data lines with each other to make the data lines short-circuited during the black grayscale inserting period set in the N-th frame period; a gate driving circuit configured to sequentially supply a first gate pulse to the gate lines during the data addressing period and a second gate pulse to the gate lines during the black grayscale inserting period; and a backlight unit configured to provide light to the display panel, wherein only the left eye shutter is opened during the data addressing period set in the N-th frame period, and then the left eye shutter is closed and the right eye shutter is opened during the black grayscale inserting period set in the N-th frame period, wherein only the right eye shutter is opened during the data addressing period set in the (N+1)-th frame period, and then the right eye shutter is closed and the left eye shutter is opened during the black grayscale inserting period set in the (N+1)-th frame period, and wherein the backlight unit is turned off from a start point of each of the N-th and the (N+1)-th frame periods to a point when a second predetermined time (T 1 ) has elapsed, is then turned on from the second predetermined time (T 1 ) to a point when a first predetermined time (T 2 ) has elapsed, and is then turned off again from the first predetermined time (T 2 ) to an end point of the frame period.