Autostereoscopic display device having a transparent mode of operation
First Claim
Patent Images
1. A display device comprising:
- an emissive display panel comprising a display output face and a rear face, wherein light emissive display pixels are disposed between the display output face and the rear face;
a polarization-sensitive view forming arrangement over the display output face,wherein the view forming arrangement directs light of a first polarization from different pixels into different directions thereby enabling multiple views to be displayed in different directions simultaneously,wherein the view forming arrangement passes light of a second polarization that is orthogonal to the first polarization without significant change of direction; and
a polarization filter arranged on the rear face,wherein the polarization filter blocks light of the first polarization and passes light of the second polarization; and
wherein the display device has at least two modes of operation;
a first, see-through mode of operation in which the display panel does not emit light and the display device blocks the light of the first polarization but allows light of the second polarization to pass through in both opposite directions through the display device; and
a second, 3D display mode in which the emissive pixels output light of the first polarization from the display output face and the view forming arrangement forms the multiple views.
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Abstract
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.
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Citations
14 Claims
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1. A display device comprising:
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an emissive display panel comprising a display output face and a rear face, wherein light emissive display pixels are disposed between the display output face and the rear face; a polarization-sensitive view forming arrangement over the display output face, wherein the view forming arrangement directs light of a first polarization from different pixels into different directions thereby enabling multiple views to be displayed in different directions simultaneously, wherein the view forming arrangement passes light of a second polarization that is orthogonal to the first polarization without significant change of direction; and a polarization filter arranged on the rear face, wherein the polarization filter blocks light of the first polarization and passes light of the second polarization; and wherein the display device has at least two modes of operation; a first, see-through mode of operation in which the display panel does not emit light and the display device blocks the light of the first polarization but allows light of the second polarization to pass through in both opposite directions through the display device; and a second, 3D display mode in which the emissive pixels output light of the first polarization from the display output face and the view forming arrangement forms the multiple views. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of operating a display device, the device comprising:
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an emissive display panel comprising a display output face and a rear face, wherein light emissive display pixels are disposed between the display output face and the rear face; a polarization-sensitive view forming arrangement over the display output face, wherein the view forming arrangement directs light of a given first polarization from different pixels into different directions thereby enabling multiple views to be displayed in different directions simultaneously, wherein the view forming arrangement passes light of a second polarization that is orthogonal to the first polarization without a significant change of direction; and a polarization filter arranged on the rear face, wherein the polarization filter blocks light of the first polarization and passes light of the second polarization, wherein the method comprises at different times operating the display device in at least two modes of operation; a first, see-through mode of operation in which the display panel does not emit light and the display device blocks the light of the first polarization but allows light of the second polarization to pass through in both opposite directions through the display device; and a second, 3D display mode in which the display panel outputs light of the first polarization from the display output face and the view forming arrangement forms the multiple views.
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Specification