Autostereoscopic display device

Patent metadata

Field	Value
Publication number	US-2016014398-A1
Application number	US-201414772220-A
Country	US
Kind code	A1
Filing date	Mar 19, 2014
Priority date	Mar 22, 2013
Publication date	Jan 14, 2016
Grant date	—

Abstract

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.

First claim

1 . An autostereoscopic display device comprising:
a display having an array of display pixels for producing a display, wherein the display pixels are arranged in rows and columns of different colour sub-pixels; a lens array arranged in registration with the display 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=tan θ, 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 display sub-pixel widths, and c is the number of different colour sub-pixels forming each pixel of the display,
wherein:
0.8≦α≦1/0.8,

and wherein:

p
=

cA

α



A

-
1

wherein A the reduction factor in resolution of the 3D view with respect to the resolution of the underlying panel.

2 . A device as claimed in claim 1 , wherein each pixel of the display comprises an RGB pixel with red green and blue sub-pixels each extending in the column direction and arranged side by side.

3 . A device as claimed in claim 1 , wherein each pixel of the display comprises an RGBY pixel with red green blue and yellow sub-pixels each extending in the column direction and arranged side by side.

4 . A device as claimed in claim 1 , wherein c=3 and A=9.

5 . A device as claimed in claim 4 , wherein the display has a resolution of 7680×4320 RGB pixels.

6 . A device as claimed in claim 1 , wherein c=4 and A=16.

7 . A device as claimed in claim 6 , wherein the display has a resolution of 7680×4320 RGBY pixels.

8 . A device as claimed in claim 1 , wherein:
c=3 and A=16; or c=4 and A=9.

9 . A display device as claimed in claim 1 , wherein the columns of pixels are parallel to a side edge of the display.

10 . A method of determining the slant angle for a elongate lens array of an autostereoscopic display device, wherein the device comprises a display having an array of display pixels for producing a display, wherein the display pixels are arranged in rows and columns of different colour sub-pixels and a lens array arranged in registration with the display 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=tan θ, 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 display sub-pixel widths, and c is the number of different colour sub-pixels forming each pixel of the display,
wherein the method comprises setting:
0.8≦α≦1/0.8

and setting:

p
=

cA

α



A

-
1

wherein A is the reduction factor in resolution of the 3D view with respect to the resolution of the underlying panel.

Assignees

• Koninkl Philips Nv

Inventors

• Kroon Bart
• Van Putten Eibert Gerjan

Classifications

• G09G2320/0233

  Improving the luminance or brightness uniformity across the screen · CPC title

• H04N2213/001

  Constructional or mechanical details · CPC title

• H04N13/398

  Synchronisation thereof; Control thereof · CPC title

• H04N13/324

  Colour aspects · CPC title

• H04N13/351

  for displaying simultaneously · CPC title