Three dimensional image display device

Patent metadata

Field	Value
Publication number	US-2016150220-A1
Application number	US-201514828273-A
Country	US
Kind code	A1
Filing date	Aug 17, 2015
Priority date	Nov 24, 2014
Publication date	May 26, 2016
Grant date	—

Abstract

A 3D image display device includes: a display panel that includes a plurality of pixels arranged in a matrix form; and a view point division part that divides the plurality of pixels into a plurality of corresponding view points. The view point division part includes a plurality of view point division units each associated with a lenticular lens tilted at an inclination angle and an inclination angle changing unit for changing the inclination angles of the plurality of the view point division units to correspond to a portrait mode or a landscape mode. The view point division part and the display panel are configured so that a same optimal viewing distance is calculated in portrait mode and landscape mode.

First claim

What is claimed is:

1 . A 3D image display device, comprising:
a display panel that includes a plurality of pixels arranged in a matrix form; and a view point division part that divides the plurality of pixels into a plurality of corresponding view points, wherein the view point division part includes: a plurality of view point division units, each associated with a lenticular lens tilted at an inclination angle; and an inclination angle changing unit configured to change the inclination angles of the plurality of the view point division units to correspond to a portrait mode or a landscape mode, and the view point division part and the display panel are configured so that a same optimal viewing distance (OVD) is calculated in portrait mode and landscape mode.

2 . The 3D image display device of claim 1 , wherein:
the inclination angle changing unit includes: an upper substrate; a lower substrate; a plurality of first electrodes disposed on the upper substrate to correspond to the inclination angle of one mode of portrait mode or landscape mode; a plurality of second electrodes disposed on the lower substrate to correspond to the inclination angle of a mode other than the one mode, and a liquid crystal layer interposed between the upper substrate and the lower substrate, wherein the liquid crystal layer changes into the lenticular lenses according to a voltage applied to at least one of the plurality of first electrodes and second electrodes.

3 . The 3D image display device of claim 1 , wherein:
the inclination angle in portrait mode is defined according to a value obtained by multiplying a first coefficient by a first ratio between a horizontal pitch of a pixel and a vertical pitch of the pixel, the inclination angle in landscape mode is defined according to a value obtained by multiplying a second coefficient by a reciprocal of the first ratio, and a second ratio between a horizontal lens pitch of the lenticular lens and a vertical lens pitch of the lenticular lens is the first ratio multiplied by a ratio between a function of two variables used to determine the first coefficient and a function of two variables used to determine the second coefficient.

4 . The 3D image display device of claim 3 , wherein:
Hp is the horizontal pitch of the pixel, Vp is the vertical pitch of the pixel, Hp<Vp, b, m, n, and a are natural numbers, A1 is the inclination angle in portrait mode, and A2 is the inclination angle in landscape mode, A1 and A2 are defined by the following Equations,

A



1

=

tan

-
1



b
*
Hp

m
*
Vp

,



A



2

=

tan

-
1



n
*
Vp

a
*
Hp

,

Lp is the horizontal lens pitch of the lenticular lens, and L1 is the vertical lens pitch of the lenticular lens,
Lp and L1 satisfy the second ratio of the following Equation,

Lp
:
Ll

=

2
*

(

b
+
m
-
1

)

*
Hp

m

:

2
*

(

a
+
n
-
1

)

*
Vp

a

,

wherein values of b, m, n, and a are determined to satisfy Lp=L1 and the inclination angles of the plurality of view point division units in portrait mode and landscape mode are determined.

5 . The 3D image display device of claim 4 , wherein:
E is an average human binocular distance, d is the OVD, and g is a distance between the view point division part and the display panel, the g value is determined to satisfy the following Equations,

Hp
:
g

=

m
*

E

(

b
+
m
-
1

)

:
d

,



d
:
Lp

=

(

d
+
g

)

:

2
*

(

b
+
m
-
1

)

*

Assignees

• Samsung Display Co Ltd

Inventors

• Jung Kyung Ho
• Hamagishi Goro

Classifications

• H04N13/317

  using slanted parallax optics · CPC title

• H04N13/305 Primary

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

• H04N13/00 Primary

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

• G02B30/27

  involving lenticular arrays · CPC title

• H04N13/351

  for displaying simultaneously · CPC title