Autostereoscopic display device
View Patent ↗Autostereoscopic display device ( 1 ) comprising rows and columns of colour sub-pixels and a lenticular array ( 9 ) in registration with the display, the lenses of which being slanted with respect to the general column pixel direction in order to enable square, or near-square, 3D pixels.
1. An autostereoscopic display device comprising:
a display panel having an array of display pixels for producing a display, wherein the display pixels are arranged in rows and columns of different color sub-pixels;
a lens array arranged in registration with the display panel for projecting a plurality of views towards a user in different directions, and comprising elongate lenses configurable to focus outputs of groups of the display pixels into the plurality of views projected towards a user in different directions, thereby enabling autostereoscopic imaging, wherein the elongate lenses have a long axis which is slanted at an angle θ to the general column pixel direction,
wherein:
s
=
±
(
α
p
2
c
-
(
α
p
2
c
)
2
-
1
)
where s=tanθ, α is the aspect ratio of the pixels forming each of the plurality of views p is the pitch of the lenses across the pixel row direction, expressed as a number of sub-pixel widths, and c is the number of total sub-pixels forming each pixel of the display panel,
wherein:
0.8
≤
α
≤
1
0.8
,
and wherein:
p
=
c
A
α
A
-
1
wherein A the reduction factor in resolution of the 3D view with respect to the resolution of the underlying panel.
2. The device as claimed in claim 1 , wherein each pixel of the display panel comprises an RGB pixel with red green and blue sub-pixels each extending in the column direction and arranged side by side.
3. The device as claimed in claim 1 , wherein each pixel of the display panel comprises an RGBY pixel with red green blue and yellow sub-pixels each extending in the column direction and arranged side by side.
4. The device as claimed in claim 1 , wherein c=3 and A=9.
5. The device as claimed in claim 4 , wherein the display panel has a resolution of 7680×4320 RGB pixels.
6. The device as claimed in claim 1 , wherein c=4 and A=16.
7. The device as claimed in claim 6 , wherein the display panel has a resolution of 7680×4320 RGBY pixels.
8. The device as claimed in claim 1 , wherein c=3 and A=16.
9. The display device as claimed in claim 1 , wherein the columns of pixels are parallel to a side edge of the display panel.
10. A method of determining the slant angle for a elongate lens array of an autostereoscopic display device, wherein the device comprises a display panel having an array of display pixels for producing a display, wherein the display pixels are arranged in rows and columns of different color sub-pixels and a lens array arranged in registration with the display panel for projecting a plurality of views towards a user in different directions, and comprising elongate lenses configurable to focus outputs of groups of the display pixels into the plurality of views projected towards a user in different directions, thereby enabling autostereoscopic imaging, wherein the elongate lenses have a long axis which is slanted at an angle θ to the general column pixel direction,
wherein the method comprises setting:
s
=
±
(
α
p
2
c
-
(
α
p
2
c
)
2
-
1
)
where s=tanθ, α is the aspect ratio of the pixels forming each of the plurality of views, p is the pitch of the lenses across the pixel row direction, expressed as a number of sub-pixel widths, and c is the number of total sub-pixels forming each pixel of the display panel,
wherein the method comprises setting:
0.8
≤
α
≤
1
0.8
and setting:
p
=
c
A
α
A
-
1
wherein A is the reduction factor in resolution of the 3D view with respect to the resolution of the underlying panel.
11. The device as claimed in claim 1 , wherein c=4 and A=9.