Multi-view 3D image display apparatus using modified common viewing zone

Patent metadata

Field	Value
Publication number	US-9674509-B2
Application number	US-201314097609-A
Country	US
Kind code	B2
Filing date	Dec 5, 2013
Priority date	Feb 19, 2013
Publication date	Jun 6, 2017
Grant date	Jun 6, 2017

Abstract

Disclosed is a multi-view three-dimensional (3D) image display apparatus using a modified common viewing zone. The multi-view 3D image display apparatus may use a modified common viewing zone between a central viewing zone (common viewing zone) of the multi-view 3D image display apparatus and a central viewing zone (parallel viewing zone) of a 3D image display apparatus employing an integral photography method, or form a common viewing zone at an optimum viewing distance (OVD) of the multi-view 3D image display apparatus and use a modified common viewing zone in an area beyond the OVD.

First claim

What is claimed is:

1. A multi-view three-dimensional (3D) image display apparatus, comprising:
a display panel in which pixels are arranged;
a parallax separation means arranged so as to be spaced apart from the display panel; and
a control unit configured to control formation of a modified common viewing zone in which viewing zones for each viewpoint pixel are arranged in a space, by viewpoint images created by the pixels of the display panel and the parallax separation means,
wherein, in the modified common viewing zone, a first horizontal position of a viewing zone for each first viewpoint pixel created by a first pixel set on the display panel providing the viewpoint image and a first position of the parallax separation means corresponding to the first pixel set, and a second horizontal position of a viewing zone for each second viewpoint pixel created by a second pixel set adjacent to the first pixel set and a second position of the parallax separation means corresponding to the second pixel set, are not the same;
wherein the parallax separation means is a parallax barrier or a lenticular lens, and a slit interval of the parallax barrier or a pitch T′ of the lenticular lens is larger than T of the multi-view 3D image display apparatus using a common viewing zone and smaller than T of a 3D image display apparatus employing an integral photography method; and
wherein the slit interval of the parallax barrier or the pitch T′ of the lenticular lens is represented as the following Equation 6, where Wp denotes a pixel width, N denotes the number of viewpoints, E denotes a viewpoint interval, and δE denotes a horizontal position difference of a viewing zone created by a slit of an adjacent parallax barrier or the lenticular lens

T
′

=

W
p

W
p

+
E

⁢

(

N
×
E

+

δ
⁢

⁢
E

)

.

[

Equation
⁢

⁢
6

]

2. The multi-view 3D image display apparatus of claim 1 , wherein a light intensity distribution of the viewing zone for each viewpoint pixel is a trapezoidal distribution in which brightness of a middle area of the viewing zone is uniform within a predetermined range, and wherein a width of an opening of the parallax barrier is 30% or less (not including 0) compared to a pitch of the pixels of the display panel.

3. The multi-view 3D image display apparatus of claim 1 , further comprising:
a tracking system of a face position or a head position of a viewer, wherein the control unit adjusts a horizontal position of a central viewing zone of the modified common viewing zone by re-arranging the viewpoint image in the pixels according to a position of the viewer, using face or head tracking information provided from the tracking system.

4. The multi-view 3D image display apparatus of claim 1 , wherein a ratio α of a horizontal position difference (δE) of a horizontal position of the viewing zone for each second viewpoint pixel to a horizontal position of the viewing zone for each first viewpoint pixel is 8 or larger.

5. The multi-view 3D image display apparatus of claim 1 , wherein ΔCrosstalk, a change width of an amount of crosstalk within the modified common viewing zone is 10% or less.

6. A multi-view three-dimensional (3D) image display apparatus, comprising:
a display panel in which pixels are arranged;
a line light source arranged so as to be spaced apart from the display panel; and
a control unit configured to control formation of a modified common viewing zone in which viewing zones for each viewpoint pixel are arranged in a space, by viewpoint images created by the pixels of the display panel and the line light source,
wherein, in the modified common viewing zone, a first horizontal position of a viewing zone for each first viewpoint pixel created by a first pixel set on the display panel providing the viewpoint image and a first position of the line light source corresponding to the first pixel set, and a second horizontal position of a viewing zone for each second viewpoint pixel created by a second pixel set adjacent to the first pixel set and a second position of the line light source corresponding to the second pixel set, are not the same
wherein a pitch T′ of the line light source is smaller than T of the multi-view 3D image display apparatus using a common viewing zone and larger than T of a 3D image display apparatus employing an integral photography method; and
wherein the pitch T′ of the line light source is represented as the following Equation 12, where Wp denotes a pixel width, N denotes the number of viewpoints, E denotes a viewpoint interval, and δE denotes a horizontal position difference of a viewing zone created by an adjacent line light source

T
′

=

W
p

E
-

W
p

⁢

(

N
*
E

-

δ
⁢

⁢
E

)

.

Assignees

• Korea Inst Sci & Tech

Inventors

• Kim Sung Kyu
• Yoon Ki Hyuk

Classifications

• H04N13/31 Primary

  using parallax barriers · CPC title

• H04N13/376

  for tracking left-right translational head movements, i.e. lateral movements · CPC title

• H04N13/305

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

• H04N13/0477

  Electricity · mapped topic

• H04N13/0404

  Electricity · mapped topic