Grating controlling method and apparatus, grating, display panel, and three-dimensional (3d) display device

Patent metadata

Field	Value
Publication number	US-2016274372-A1
Application number	US-201414769752-A
Country	US
Kind code	A1
Filing date	Oct 11, 2014
Priority date	Jul 18, 2014
Publication date	Sep 22, 2016
Grant date	—

Abstract

The present disclosure provides a grating controlling method and apparatus, a grating, a display panel, and a 3D display device for achieving 3D displaying. The grating controlling method is applied to a grating, in which the grating cooperates with a display panel used for outputting left-eye images and right-eye images to achieve the 3D displaying. The grating controlling method may include: obtaining a current position of an eye of an observer who is observing 3D images; and adjusting slit positions of the grating according to the current position, so as to enable the left-eye images to be observed by the left-eye of the observer through the adjusted slits, while to enable the right-eye images to be observed by the right-eye of the observer through the adjusted slits.

First claim

1 . A grating controlling method for achieving three-dimensional (3D) displaying, in which a grating cooperates with a display panel used for outputting left-eye images and right-eye images to achieve the 3D displaying, the grating controlling method comprising:
obtaining a current position of an eye of an observer who is observing 3D images; and adjusting slit positions of the grating according to the current position, so as to enable the left-eye images to be observed by the left-eye of the observer through the adjusted slits, while to enable the right-eye images to be observed by the right-eye of the observer through the adjusted slits.

2 . The grating controlling method according to claim 1 , further comprising, subsequent to the obtaining a current position of an eye of an observer who is observing 3D images, a step of:
calculating a distance S between the current position and a base position in a direction parallel to a connection line of the left-eye and the right-eye of the observer, wherein the grating comprises an original slit position; and the base position is a position when the left-eye images are observed by the left-eye of the observer through the original slits and the right-eye images are observed by the right-eye of the observer through the original slits simultaneously.

3 . The grating controlling method according to claim 2 , wherein the adjusting slit positions of the grating according to the current position comprises:
adjusting slit positions of the grating on the basis of the original slit position, according to the distance S.

4 . The grating controlling method according to claim 2 , wherein the grating is a liquid crystal grating; and the adjusting slit positions of the grating on the basis of the original slit position, according to the distance S comprises:
determining a corresponding value t, when the distance S is within the following value range:

[

(

2

t

-
1

)


I

2

n

+

2

mI

,

(

2

t

+
1

)


I

2

n

+

2

mI

)

where t=0, 1, 2, . . . n, mεN, I is an interpupillary distance of human eyes, n is a number of grating elements corresponding to a width of one slit of the liquid crystal grating;
determining a moving direction from the base position to the current position; and
enabling the slit position of the grating to move by t grating elements in the moving direction from the base position to the current position.

5 . A grating controlling apparatus for achieving three-dimensional (3D) displaying, in which a grating cooperates with a display panel used for outputting left-eye images and right-eye images to achieve the 3D displaying, the grating controlling apparatus comprising:
an eye tracking module configured to obtain a current position of an eye of an observer who is observing 3D images; and a driving module configured to adjust slit positions of the grating according to the current position, so as to enable the left-eye images to be observed by the left-eye of the observer through the adjusted slits, while to enable the right-eye images to be observed by the right-eye of the observer through the adjusted slits.

6 . The grating controlling apparatus according to claim 5 , further comprising:
a calculating module configured to calculate a distance S between the current position and a base position in a direction parallel to a connection line of the left-eye and the right-eye of the observer, wherein the grating comprises an original slit position; and the base position is a position when the left-eye images are observed by the left-eye of the observer through the original slits and the right-eye images are observed by the right-eye of the observer through the original slits simultaneously.

7 . The grating controlling apparatus according to claim 6 , wherein the driving module adjusts slit positions of the grating on the basis of the original slit position, according to the distance S.

8 . The grating controlling apparatus according to claim 6 , wherein the driving module comprises:
a first determining unit configured to determine a corresponding value t, when the distance S is within the following value range:

[

(

2

t

-
1

)


I

2

n

+

2

mI

,

(

2

t

+
1

)


I

2

n

+

2

mI

)

where t=0, 1, 2, . . . n, mεN, I is an interpupillary distance of human eyes, n is a number of grating elements corresponding to a width of one slit of the liquid crystal grating;
a

Assignees

• Boe Technology Group Co Ltd
• Chengdu Boe Optoelect Tech Co

Inventors

• Tian Hua

Classifications

• G02F1/292

  by controlled diffraction or phased-array beam steering (controlled diffraction for optical switching G02F1/31) · CPC title

• H04N13/383

  for tracking with gaze detection, i.e. detecting the lines of sight of the viewer's eyes · CPC title

• G02B27/0093

  with means for monitoring data relating to the user, e.g. head-tracking, eye-tracking · CPC title

• H04N13/376 Primary

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

• H04N13/31

  using parallax barriers · CPC title