Abstract: This disclosure provides systems, methods and apparatus related to displaying 3D images. In one aspect, an apparatus includes an array of display elements and a plurality of parallax barrier shutters. Each parallax barrier shutter corresponds to one of the display elements and is configured to be driven into a first state in which an angular distribution of light passing the parallax barrier shutter from the corresponding display element is weighted towards a first side of the apparatus or a second state in which the angular distribution of light passing the parallax barrier shutter from the corresponding display element is weighted towards a second side of the apparatus opposite the first side.