3d display device

Patent metadata

Field	Value
Publication number	US-2016116752-A1
Application number	US-201314370397-A
Country	US
Kind code	A1
Filing date	Jun 27, 2013
Priority date	Apr 28, 2013
Publication date	Apr 28, 2016
Grant date	—

Abstract

A 3D display device, comprising: a display panel ( 01 ); a first grating layer ( 02 ), located at a light exiting side of the display panel ( 01 ) and comprising hole-like light-transmitting regions arranged in an array form; a second grating layer ( 03 ), located over the first grating layer ( 02 ) and comprising hole-like light-transmitting regions arranged in an array form; and an adjusting device ( 04 ), configured to adjust a relative shift between the first grating layer ( 02 ) and the second grating layer ( 03 ) so as to realize switching between a 2D display state and a 3D display state, wherein, the hole-like light-transmitting regions included in the first grating layer ( 02 ) correspond to the hole-like light-transmitting regions included in the second grating layer ( 03 ) in a one-to-one correspondence relationship, pixel units ( 05 ) arranged in an array form are provided within the display panel ( 01 ); in the 2D display state, an overlap region of projections of each pair of the hole-like light-transmitting regions on the display panel ( 01 ) covers a region of at least one pixel unit ( 05 ); in the 3D display state, an overlap region of projections of each pair of the hole-like light-transmitting regions on the display panel ( 01 ) is smaller than the region of one pixel unit ( 05 ).

First claim

1 . A 3D display device, comprising:
a display panel; a first grating layer, located at a light exiting side of the display panel and comprising hole-like light-transmitting regions arranged in an array form; a second grating layer, located over the first grating layer and comprising hole-like light-transmitting regions arranged in an array form; and an adjusting device, configured to adjust a relative shift between the first grating layer and the second grating layer so as to realize switching between a 2D display state and a 3D display state, wherein, the hole-like light-transmitting regions included in the first grating layer correspond to the hole-like light-transmitting regions included in the second grating layer in a one-to-one correspondence relationship, pixel units arranged in an array form are provided within the display panel; in the 2D display state, an overlap region of projections of each pair of the hole-like light-transmitting regions on the display panel covers a region of at least one pixel unit; in the 3D display state, an area of an overlap region of projections of each pair of the hole-like light-transmitting regions on the display panel is smaller than the region of one pixel unit.

2 . The 3D display device of claim 1 , wherein, the each pair of the hole-like light-transmitting regions corresponds to each of the pixel units in a one-to-one position correspondence relationship.

3 . The 3D display device of claim 1 , wherein, the hole-like light-transmitting regions included in the first grating layer and the hole-like light-transmitting regions included in the second grating layer are the same in both the shape and the dimension.

4 . The 3D display device of claim 3 , wherein, the hole-like light-transmitting regions included in the first grating layer and the hole-like light-transmitting regions included in the second grating layer take the shape of a square or a circle.

5 . The 3D display device of claim 1 , wherein, a total area of the hole-like light-transmitting regions in the first grating layer accounts for 60%-90% of a total area of the first grating layer; and a total area of the hole-like light-transmitting regions in the second grating layer accounts for 60%-90% of a total area of the second grating layer.

6 . The 3D display device of claim 1 , wherein, the adjusting device comprises:
a first driving unit, configured to drive the first grating layer to shift along an extending direction of rows of the pixel units; and/or a second driving unit, configured to drive the second grating layer to shift along the extending direction of the rows of the pixel units.

7 . The 3D display device of claim 1 , further comprising:
a third driving unit, configured to adjust a distance between the display panel and the first grating layer; a signal acquisition unit, provided on a front side of the display panel and comprising a distance acquisition module for collecting a distance information between a face of a viewer in front of the display panel and the display panel; and a signal processing unit, coupled to the distance acquisition module and the third driving unit, wherein, a drive signal is generated by the signal processing unit under a condition that the distance information collected by the distance acquisition module changes, and the third driving unit adjusts a relative distance between the display panel and the first grating layer on the basis of the drive signal.

8 . The 3D display device of claim 1 , wherein, the first grating layer and/or the second grating layer are/is a grating layer made of a black matrix material.

9 . The 3D display device of claim 1 , wherein, the display panel is a liquid crystal display panel, an organic light emitting display panel, a plasma display panel, or a cathode ray display.

10 . The 3D display device of claim 2 , wherein, the first grating layer and/or the second grating layer are/is a grating layer made of a black matrix material.

11 . The 3D display device of claim 3 , wherein, the first grating layer and/or the second grating layer are/is a grating layer made of a black matrix material.

12 . The 3D display device of claim 4 , wherein, the first grating layer and/or the second grating layer are/is a grating layer made of a black matrix material.

13 . The 3D display device of claim 5 , wherein, the first grating layer and/or the second grating layer are/is a grating layer made of a black matrix material.

14 . The 3D display device of claim 6 , wherein, the first grating layer and/or the second grating layer are/is a grating layer made of a black matrix material.

15 . The 3D display device of claim 7 , wherein, the first grating layer and/or the second grating layer are/is a grating layer made of a black matrix material.

16 . The 3D display device of claim 2 , wherein, the display panel is a liquid crystal display panel, an organic light emitting display panel, a plasma display panel, or a cathode ray display.

17 . The 3D display device of claim 3 , wherein, the display panel is a liquid crystal display panel, an organic light emitting display panel, a plasma display panel, or a cathode ray display.

18 . The 3D display device of claim 4 , wherein, the display panel is a liquid crystal display panel, an organic light emitting display panel, a plasma display panel, or a cathode ray display.

19 . The 3D display device of claim 5 , wherein, the display panel is a liquid crystal display panel, an organic light emitting display panel, a plasma display panel, or a cathode ray display.

20 . The 3D display device of claim 6 , wherein, the display panel is a liquid crystal display panel, an organic light emitting display panel, a plasma display panel, or a cathode ray display.

Assignees

• Boe Technology Group Co Ltd

Inventors

• Wu Naifu

Classifications

• G02B26/08 Primary

  for controlling the direction of light (in light guides G02B6/35) · CPC title

• H04N13/31

  using parallax barriers · CPC title

• G02B2207/123

  Optical louvre elements, e.g. for directional light blocking · CPC title

• H04N13/356

  having separate monoscopic and stereoscopic modes · CPC title

• G02B30/27 Primary

  involving lenticular arrays · CPC title