slit u00bd to slip in a vertical direction although different slit pitches that differ from ideal slit pitches exist in parallax barrier 1 and parallax barrier 1 u2032 the average value of pitches for each slit are approximately equal to ideal slit pitches and the gap regions for the ideal slits of each slit are dispersed with such configuration even if hue of the image difference of chroma or brightness occurred by the cause of the gap a viewer is not aware of that as uneven image in a stereoscopic vision display device and a multiple vision display device of fig2 a and 2b with the use of parallax barrier 1 of fig4 viewer a can observe stereoscopic images without recognizing uneven images in fig2 a and also each viewers b and c can observe different images without recognizing uneven images in fig2 b in a stereoscopic vision display device with the use of parallax barrier 1 u2032 of fig8 left eye image l and right eye image r are displayed on liquid crystal display device 104 as shown in fig9 the regions shown with hatching between left eye image l and right eye image r in fig9 indicate black matrix regions furthermore left eye image l and right eye.