Display device in which multiple images are displayed using four neighboring pixels, display panel and electronic apparatus using same

• US 9,648,312 B2
• Filed: 03/01/2016
• Issued: 05/09/2017
• 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:
  US15/057,692
• Publication Number:
  US 20160241844A1
• Time in Patent Office: 434 Days
• Field of Search: 345 87, 345 88, 345103, 345694-696, 345 11- 9, 345 32, 349 84, 349149, 349 15, 348 42- 48, 348 51, 353 7
• 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:

a display part including (a) pixels of a first series and (b) pixels of a second series, the pixels of the first series and the pixels of the second series being arrayed alternately in a first direction;

a parallax barrier comprised of (a) first series barriers or openings and (b) second series barriers, the first series barriers or openings and second series barriers being arrayed alternately in the first direction,

wherein,

the display device has a plurality of display modes including a first display mode and a second display mode,

in the first display mode (1) a 2D image signal is applied to the display part, (2) the parallax barrier is driven by a barrier control signal such that the first series barriers or openings and the second series barriers are in a transmissive state, and (3) the pixels of the first series and the pixels of the second series jointly display an image in accordance with the 2D image signal,

in the second display mode (1) a 3D image signal is applied to the display part, (2) the parallax barrier is driven by the barrier control signal such that the first series barriers or openings are in the transmissive state and the second series barriers are in a non-transmissive state, and (3) the pixels of the first series display a plurality of images via the first series barriers or openings and the pixels of the second series only display a black color or a gray color in accordance with the 3D image signal.

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

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

4. The display device according to claim 1, wherein the distance between the pixels of the first series in the first direction is longer than a first pixel width that is a width of the pixels of the first series in the first direction.

5. The display device according to claim 1, wherein the pixels of the first series and the pixels of the second series are arrayed alternately 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 each pixel of the first series is equal to a central coordinate in the first direction of a pixel of the second series neighboring on the pixel of the first series in the second direction.

7. The display device according to claim 1, wherein the parallax barrier is comprised of the first and second series barriers.

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

9. The display device according to claim 7, wherein the first series barriers and the second series barriers extend in a predetermined direction.

10. The display device according to claim 1, the second series barriers are switchable liquid crystal barriers.

11. The display device according to claim 1, wherein a width of the first series barriers is smaller than a first pixel width that is a width of the pixels of the first series in the first direction.

12. The display device according to claim 1, wherein the parallax barrier is comprised of openings and the second series barriers.

13. The display device according to claim 1, further comprising a back light, wherein:

the display part is a liquid crystal display part, and

the liquid crystal display part is disposed between the back light and the parallax barrier.

14. The display device according to claim 1, further comprising a back light, wherein:

the display part is a liquid crystal display part, and

the parallax barrier is disposed between the back light and the liquid crystal display part.

15. The display device of claim 1, wherein, for a given group of four neighboring pixels of the first series, two of the pixels are a one color and two of the pixels are of another color.

16. The display device of claim 1, wherein each of the pixels of the second series displays a same color with each of the pixels of the first series which is adjacent to the each of the pixels of the second series in the first direction.

17. The display device of claim 1, wherein, for a given group of four neighboring pixels of the first series, two of the pixels are in one row in the first direction and two of the pixels are in another row in the first direction.

18. An electronic apparatus, comprising:

a display unit; and

a control unit that controls operations of the display unit,

wherein,

the display unit includes a display part in which pixels of a first series and pixels of a second being arrayed alternately in first direction,

a parallax barrier comprised of (a) first series barriers or openings and (b) second series barriers, the first series barriers or openings and the second series barriers being arrayed alternatively in the first direction,

the display device has a plurality of display modes including a first display mode and a second display mode,

in the first display mode (1) a 2D image signal is applied to the display part, (2) the parallax barrier is driven by a barrier control signal such that the first series barriers or openings and second series barriers are in a transmissive state, and (3) the pixels of the first series and the pixels of the second series jointly display an image in accordance with the 2D image signal,

in the second display mode (1) a 3D image signal is applied to the display part, (2) the parallax barrier is driven by the barrier control signal such that the first series barriers or openings are in the transmissive state and the second series barriers are in a non-transmissive state, and (3) the pixels of the first series display a plurality of images via the first series barriers or openings and the pixels of the second series only display a black color or a gray color in accordance with the 3D image signal.