A display device, comprising: means for providing light; means for generating images on a screen by modulating light supplied from the means for providing light, the images being generated by sequentially scanning in a screen scanning direction while alternately turning-ON and turning-OFF the light from the means for providing light, wherein the means for generating images produces different gradations of luminance in the displayed image by implementing modulation amounts in accordance with driving by an applied video signal; and video signal processing means configured to supply to the image generating means, in use, a time division multiplexed video signal for generating target luminance values on the screen, the time division multiplexed video signal comprising time division multiplexed images from at least a first video signal and a second video signal, wherein in the time division multiplexed video signal images from the first video signal are adjacent to respective images from the second video signal and are temporally alternated with each other; wherein the video signal processing means is configured to detect in the time division multiplexed video signal, along the screen scanning direction, amounts of parallax or difference in gradation between a first image from the first video signal and an adjacent image from the second video signal, and to determine the loc0ation in the screen scanning direction, where the maximum amount of parallax or difference in gradation between said first image and adjacent image is detected by the video signal processing means; and means for controlling the turn-on time (Ton) of the supply of light to the means for generating images from the means for providing light, wherein the means for controlling is configured to set the start of said turn-on time (Ton) to correspond to the point in time in the display period of said first image when said the location on the screen reaches the amount of modulation that produces, upon supply of light, the target luminance for said first image at said location. means for providing light; means for generating images on a screen by modulating light supplied from the means for providing light, the images being generated by sequentially scanning in a screen scanning direction while alternately turning-ON and turning-OFF the light from the means for providing light, wherein the means for generating images produces different gradations of luminance in the displayed image by implementing modulation amounts in accordance with driving by an applied video signal; and video signal processing means configured to supply to the image generating means, in use, a time division multiplexed video signal for generating target luminance values on the screen, the time division multiplexed video signal comprising time division multiplexed images from at least a first video signal and a second video signal, wherein in the time division multiplexed video signal images from the first video signal are adjacent to respective images from the second video signal and are temporally alternated with each other; wherein the video signal processing means is configured to detect in the time division multiplexed video signal, along the screen scanning direction, amounts of parallax or difference in gradation between a first image from the first video signal and an adjacent image from the second video signal, and to determine the loc0ation in the screen scanning direction, where the maximum amount of parallax or difference in gradation between said first image and adjacent image is detected by the video signal processing means; and means for controlling the turn-on time (Ton) of the supply of light to the means for generating images from the means for providing light, wherein the means for controlling is configured to set the start of said turn-on time (Ton) to correspond to the point in time in the display period of said first image when said the location on the screen reaches the amount of modulation that produces, upon supply of light, the target luminance for said first image at said location.