Patent ID: 6448952
Filing Date: 2002-09-10
Classification: G09G,H04N

Abstract:
A stereoscopic image display device comprising:a display panel having a plurality of scanning electrodes, a plurality of data electrodes extending perpendicularly to the scanning electrodes, and liquid crystal filling a space between the scanning electrodes and data electrodes, pixels being formed at each intersection of the scanning and data electrodes together with the liquid crystal, the display panel being divided into an upper half part and a lower half part; a scanning control circuit for scanning the scanning electrodes by sequentially supplying scanning voltages to each scanning electrode and by maintaining the same for a predetermined period, the scanning electrodes located in the upper half part of the panel and the scanning electrodes located in the lower half part being scanned separately but simultaneously in opposite directions; an image data control circuit for sequentially supplying image data voltages to the data electrodes in synchronism with scanning of the scanning electrodes, so that a left eye image is displayed on the display panel in a first field during which all the scanning electrodes are once scanned and a right eye image is displayed in a second field during which all the scanning electrodes are once scanned; and an eye shutter having a left eye shutter and a right eye shutter to be worn by a viewer, both the left and right eye shutters being alternately opened and closed in synchronism with display of the respective left and right eye images on the display panel, wherein: the scanning electrodes are scanned in such a manner that the image data is written on the pixels in a selecting period, the written image data is held on the pixels in a holding period and the image data is eliminated in an eliminating period; and the one eye shutter is opened and the other eye shutter is closed until a time immediately before the image for the other respective eye image is displayed on the scanning electrode first scanned.