Three-dimensional image display device

Patent metadata

Field	Value
Publication number	US-10244229-B2
Application number	US-201514664304-A
Country	US
Kind code	B2
Filing date	Mar 20, 2015
Priority date	Sep 3, 2014
Publication date	Mar 26, 2019
Grant date	Mar 26, 2019

Abstract

A three-dimensional image display device includes a display panel that includes a plurality of pixels arranged in a matrix shape; and a viewpoint divider that includes a plurality of viewpoint dividing units that are inclined at a tilt angle. Letting a row-directional pitch and a column-directional pitch of the pixels be respectively denoted as Hp and Vp, where Hp>Vp, the tilt angle satisfies the following equation:
A = tan - 1 ⁢ b * Hp ( 3 ⁢ b + c ) * Vp ,
where c is −1 or 1, and b is a natural number that is greater than 1.

First claim

What is claimed is:

1. A three-dimensional image display device comprising:
a display panel that includes a plurality of pixels arranged in a matrix shape; and
a viewpoint divider that includes a plurality of viewpoint dividing units inclined at a tilt angle,
wherein Hp and Vp respectively denote a row-directional pitch and a column-directional pitch of the pixels, Hp>Vp, and the tilt angle A satisfies the following equation:

A
=

tan

-
1

⁢

b
*
Hp

(

3
⁢
b

+
c

)

*
Vp

,

wherein c is −1 or 1, and b is a natural number that is greater than 1, and
wherein Lh and Lv respectively denote a row-directional pitch and a column-directional pitch of the viewpoint dividing units along directions parallel to the pixel-row and pixel-column directions, respectively, and each pitch of the viewpoint dividing unit is configured to satisfy the following equation:

Lh
⁢

:

⁢
Lv

=

Hp

3
⁢
b

+
c

⁢

:

⁢

Vp
b

.

2. The three-dimensional image display device of claim 1 , wherein an apparent row-directional width of each pixel as observed by a user through the viewpoint dividing units is Hp/(3b+c), and
an apparent column-directional width of each pixel as observed by a user through the viewpoint dividing units is Vp/b.

3. The three-dimensional image display device of claim 1 , wherein, El denotes a calculated viewing distance on a plane at an optimal viewing distance from the viewpoint dividing units of a landscape mode of the three-dimensional image display device that corresponds to Lh, Ep denotes a calculated viewing distance on a plane at an optimal viewing distance from the viewpoint dividing units of a portrait mode of the three-dimensional image display device that corresponds to Lv, and E denotes a human average viewing distance,
El satisfies the following equation:

E
⁢

⁢
1

=

Lh
*
E
*
2

Lh
+
Lv

,

Ep satisfies the following equation:

Ep
=

Lv
*
E
*
2

Lh
+
Lv

,

 and
E=½ (El+Ep).

4. The three-dimensional image display device of claim 3 , wherein, d denotes a distance between a viewer eye and the viewpoint divider, g denotes a distance between the viewpoint divider and the display panel, and kl denotes a distance on the display panel that corresponds to a pitch of the viewpoint dividing unit in a landscape mode,
the following equations are satisfied:

E
⁢

⁢
1
⁢

:

⁢
d

=

k
⁢

⁢
1

2

⁢

:

⁢
g

 and
Lh:d=kl:(d+g).

5. The three-dimensional image display device of claim 3 , wherein, d denotes a distance between a viewer eye and the viewpoint divider, g denotes a distance between the viewpoint divider and the display panel, and kp denotes a distance on the display panel corresponds to a pitch of the viewpoint dividing unit in a portrait mode,
the following equations are satisfied:

Ep
⁢

:

⁢
d

=

kp
2

⁢

:

⁢
g

 and
Lv:d=kp:(d+g).

6. The three-dimensional image display device of claim 4 , wherein n=4b+c−1 denotes the number of pixels in a proximity dot,
kl satisfies the following equation:

k
⁢

⁢
1

=

2
⁢
n
*
Hp

3
⁢
b

+
c

,

 and

Assignees

• Samsung Display Co Ltd

Inventors

• Hamagishi Goro
• Jung Kyung Ho

Classifications

• H04N13/305 Primary

  using lenticular lenses, e.g. arrangements of cylindrical lenses · CPC title

• H04N13/31

  using parallax barriers · CPC title

• H04N13/00 Primary

  Stereoscopic video systems; Multi-view video systems; Details thereof · CPC title

• H04N13/317

  using slanted parallax optics · CPC title

• G02B30/27

  involving lenticular arrays · CPC title