Three-dimensional image display device, portable terminal device, display panel and fly eye lens

Patent metadata

Field	Value
Publication number	US-9516298-B2
Application number	US-201113287658-A
Country	US
Kind code	B2
Filing date	Nov 2, 2011
Priority date	Nov 6, 2003
Publication date	Dec 6, 2016
Grant date	Dec 6, 2016

Abstract

In a three-dimensional image display device for displaying color three-dimensional images, a fly eye lens, a display panel, and a light source are provided in this order from the observer side. A display panel has four pixels arrayed in a (2×2) matrix correlated with one lens element of the fly eye lens. In the event that j is a natural number, a pixel magnifying projection width e in a second direction is set in a range of the following expression according to mean interpupillary distance Y of the observers.

e
3

≠

Y

2
×
j

First claim

What is claimed is:

1. A three-dimensional image display device comprising:
a display panel on which a plurality of pixels colored in a plurality of colors are arrayed in a first direction, and a second direction orthogonal to said first direction, in matrix fashion; and
an optical unit for distributing light emitted from the pixels arrayed in said first direction along said first direction, and also for distributing light emitted from the pixels arrayed in said second direction along said second direction, wherein
said optical unit, to an observer if a direction from a right eye to a left eye of the observer is the same as said first direction, distributes light for the right eye emitted from the pixels arrayed in said first direction to the right eye and light for the left eye emitted from the pixels arrayed in said first direction to the left eye, and to the observer, if the direction from the right eye to the left eye of the observer is the same as said second direction, distributes light for the right eye emitted from the pixels arrayed in said second direction to the right eye and light for the left eye emitted from the pixels arrayed in said second direction to the left eye,
the array pitch of said pixels in said first direction and the array pitch of said pixels in said second direction are equal to each other,
said display panel has a plurality of pixel matrixes each made up of a plurality of pixels having colors different from each other said plurality of pixels being arrayed adjacent to each other in said first direction and in said second direction in matrix fashion, so that a pixel of another pixel matrix is not present between said plurality of pixels included in each of said plurality of pixel matrixes,
said optical unit is a fly eye lens that has a plurality of optical elements, in matrix fashion, that distribute light along said first direction and said second direction, each of said plurality of optical elements being correspondingly provided to one pixel matrix of said plurality of pixel matrixes,
said display panel has a plurality of display units each made up of said plurality of pixel matrixes arrayed adjacent to each other in said first direction and said second direction in matrix fashion, so that said plurality of pixel matrixes do not overlap each other, and
in each of said plurality of display units, pixel arrays arrayed in said first direction and pixel arrays arrayed in said second direction each include therein pixels of all the plurality of colors, respective colors of said pixels in each of said pixel arrays arrayed in said first and second directions being different from one another.

2. The three-dimensional image display device according to claim 1 , wherein each of said display units is made up of four pixel matrixes, two of which are arrayed in said first direction, and two of which are arrayed in said second direction, in matrix fashion.

3. The three-dimensional image display device according to claim 2 , wherein each of said pixel matrixes is made up of four pixels, two of which are arrayed in said first direction, and two of which are arrayed in said second direction.

4. The three-dimensional image display device according to claim 3 , wherein said four pixels forming each of said pixel matrixes include a red pixel, a green pixel, a blue pixel, and a cyan pixel.

5. The three-dimensional image display device according to claim 3 , wherein said four pixels forming each of said pixel matrixes include a red pixel, a green pixel, a blue pixel, and a white pixel.

6. The three-dimensional image display device according to claim 1 , wherein
if said first direction coincides with the direction from the right eye of an observer to the left eye of the observer, a right-eye image and a left-eye image are alternately displayed on pixels arrayed in said first direction and an image for a same viewpoint is displayed on pixels arrayed in said second direction,
if said second direction coincides with the direction from the right eye of an observer to the left eye of the observer, a right-eye image and a left-eye image are alternately displayed on pixels arrayed in said second direction, and a same-viewpoint image is displayed on pixels arrayed in said first direction, and
a direction that alternately displays the right-eye image and the left-eye image is switched based on the direction from the right eye to the left eye of the observer.

7. A portable terminal device comprising:
a main body; and
the three-dimensional image display device according to claim 1 connected to said main body.

8. The portable terminal device according to claim 7 , wherein said three-dimensional image display device is connected to said main body so as to rotate.

9. The portable terminal device according to claim 7 , further comprising detecting unit for detecting a displacement direction of said three-dimensional image display device with respect to said main body, wherein
said three-dimensional image display device switches the array direction of the pixels for displaying a right-eye image and the pixels for displaying a left-eye image either in said first direction or in said second direction based on the detection results of said detecting unit.

10. The portable terminal device according to claim 7 , wherein said portable terminal device is a handheld phone, portable terminal, PDA, game device, digital camera, or digital video camera.

11. The three-dimensional image display device according to claim 1 , wherein
each of said pixel matrixes includes four pixels of the pixels, the four pixels being disposed, in matrix fashion, with two pixels aligned in each of said first direction and said second direction,
the plurality of optical elements of the fly eye lens, each being correspondingly provided to each of said pixel matrixes, has a square shape.

Assignees

• Uehara Shin-Ichi
• Ikeda Naoyasu
• Takanashi Nobuaki
• Nlt Technologies Ltd

Inventors

• Uehara Shin-Ichi
• Ikeda Naoyasu
• Takanashi Nobuaki

Classifications

• G02B30/27

  involving lenticular arrays · CPC title

• H04N13/324

  Colour aspects · CPC title

• H04N13/31 Primary

  using parallax barriers · CPC title

• H04N13/0409 Primary

  Electricity · mapped topic

• G02B27/2214

  Physics · mapped topic