Stereoscopic display device with selectively transmissive parallax barriers

• US 10,455,223 B2
• Filed: 04/04/2017
• Issued: 10/22/2019
• Est. Priority Date: 09/29/2011
• Status: Active Grant

• Current Assignee: Japan Display Incorporated
• Original Assignee: Japan Display Incorporated
• Inventors: Koito, Takeo, Takama, Daisuke
• Primary Examiner(s): Mistry, Ram A
• Application Number:
  US15/478,907
• Publication Number:
  US 20170208322A1
• Time in Patent Office: 931 Days
• Field of Search: 345 87, 345 88, 345103, 345694-696, 349 84, 349149
• CPC Class Codes: G09G 2320/0209 Crosstalk reduction, i.e. to reduce direct or indirect influences of signals directed to a certain pixel of the displayed image on other pixels of said image, inclusive of influences affecting pixels in different frames or fields or sub-images which constitute a same image, e.g. left and right images of a stereoscopic display
• CPC Class Codes: G09G 3/2003 Display of colours specific for liquid crystal displays G09G3/3607
• CPC Class Codes: H04N 13/305 using lenticular lenses, e.g. arrangements of cylindrical lenses
• CPC Class Codes: H04N 13/31 using parallax barriers
• CPC Class Codes: H04N 13/312 the parallax barriers being placed behind the display panel, e.g. between backlight and spatial light modulator [SLM]
• CPC Class Codes: H04N 13/324 Colour aspects
• CPC Class Codes: H04N 13/351 for displaying simultaneously

Abstract

A display device including a display part including a pixel of a first series having a first horizontal pixel width and a pixel of a second series having a second horizontal pixel width smaller than the first horizontal pixel width, the pixels of the first series and the pixels of the second series being arrayed alternately in each of a horizontal direction and a vertical direction, and a light beam control part that controls a light beam from the display part or a light beam toward the display part.

Claims

1. A display device, comprising:

first-series pixels including a first first-series pixel and a second first-series pixel;

second-series pixels including a first second-series pixel arranged between the first first-series pixel and the second first-series pixel in a first direction; and

a parallax barrier corresponding to the first series pixels and the second series pixels and comprised of a plurality of selectively transmissive barriers including a first barrier, a second barrier, and a third barrier arranged between the first barrier and the second barrier,

wherein, in a first display mode in which the first first-series pixel is configured to display a first image corresponding to a first viewpoint and the second first-series pixel is configured to display a second image corresponding to a second viewpoint;

the third barrier is configured to be in a transmissive state;

the first barrier and the second barrier are configured to be in a non-transmissive state;

the first image of the first first-series pixel is radiated to the first viewpoint through the third barrier;

the second image of the second first-series pixel is radiated to the second viewpoint through the third barrier; and

the first second-series pixel is configured to display a black color or a gray color.

2. The display device according to claim 1, wherein the distance between the first first-series pixel and the second first-series pixel in the first direction is substantially equal to a width of the first first-series pixel in the first direction.

3. The display device according to claim 1, wherein the distance between the first first-series pixels and the second first-series pixel in the first direction is shorter than a width of the first first-series in the first direction.

4. The display device according to claim 1, wherein the distance between the first first-series pixel and the second first-series pixel in the first direction is larger than a width of the first first-series pixel in the first direction.

5. The display device according to claim 1, wherein:

the first-series pixels further include a third first-series pixel,

the second-series pixels further include a second second-series pixel,

the second second-series pixel is arranged between the first first-series pixel and the third first-series pixel in a second direction which crosses the first direction.

6. The display device according to claim 5, wherein a central coordinate in the first direction of the first first-series pixel is equal to a central coordinate in the first direction of the second second-series pixel.

7. The display device according to claim 1, wherein the first barrier and the second barrier are switchable liquid crystal barriers.

8. The display device according to claim 7, wherein the third barrier is a switchable liquid crystal barrier.

9. The display device according to claim 1, wherein the first barrier and the second barrier extend in a predetermined direction.

10. The display device according to claim 1, wherein a width of the third barrier is smaller than a width of the first first-series pixel in the first direction.

11. The display device according to claim 1, further comprising an illuminator, wherein the first-series pixels and the second-series pixels are present between the illuminator and the parallax barrier.

12. The display device according to claim 1, further comprising an illuminator, wherein the parallax barrier is present between the illuminator and both the first-series pixels the second-series pixels.

13. The display device of claim 1, wherein, for a given group of four neighboring first-series pixels, two of the neighboring first-series pixels display a same first color and two of the neighboring first-series pixels display a same second color.

14. The display device of claim 1, wherein:

the display device is configured to further perform a second display mode,

in the second display mode, the first second-series pixel is configured to display a same color with at least one of the first first-series pixel or the second first-series pixel, and

in the first display mode, the first second-series pixel is configured to display black or gray.

15. The display device of claim 14, wherein:

the first-series pixels further include a third first-series pixel, the second-series pixels further include a second second-series pixel, the second second-series pixel is arranged between the first first-series pixel and the third first-series pixel in a second direction which crosses the first direction,

in the second display mode, the second second-series pixel is configured to display a same color with the first first-series pixel.

17. The display device according to claim 1, further comprising a lens through which the first and second images are radiated.

16. A display device, comprising:

first-series pixels including a first first-series pixel and a second first-series pixel;

second-series pixels including a first second-series pixel arranged between the first first-series pixel and the second first-series pixel in a first direction; and

a parallax barrier corresponding to the first series pixels and the second series pixels and comprised of openings including a first opening and selectively transmissive barriers including a first barrier and a second barrier, the first opening arranged between the first barrier and the second barrier in the first direction,

wherein, in a first display mode in which the first first-series pixel is configured to display a first image corresponding to a first viewpoint and the second first-series pixel is configured to display a second image corresponding to a second viewpoint;

the first barrier and the second barrier are configured to be in a non-transmissive state;

the first image of the first first-series pixel is radiated to the first viewpoint through the first opening;

the second image of the second first-series pixel is radiated to the second viewpoint through the first opening; and

the first second-series pixel is configured to display a black color or a gray color.