A display device has a first, see-through mode of operation (30), (34) in which the display panel does not emit light and the display device blocks the light of a first polarization (state A) but allows light of a second polarization (state B) to pass through in both opposite directions. In a second, 3D display mode, the emissive pixels output light of the first polarization (state A) from the display output face and a view forming arrangement forms multiple views (36) in one output direction.