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

• US 9,313,480 B2
• Filed: 09/11/2012
• Issued: 04/12/2016
• 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
• Application Number:
  US13/609,416
• Publication Number:
  US 20130083089A1
• Time in Patent Office: 1,309 Days
• Field of Search: 345 11- 9, 345/32, 345/87, 345/88, 345/103, 345694-696, 349/84, 349/149, 349/15, 348 42- 48, 348/51, 353/7
• US Class Current: 1/1
• 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

There is provided 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 each having a first horizontal pixel width and (b) pixels of a second series each 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;

a light beam control part that controls a light beam from the display part or a light beam toward the display part, the light beam control part including a parallax barrier comprised of (a) first series barriers or openings and (b) second series barriers arrayed alternately in the horizontal direction,

a display drive section to drive the display part by applying an image signal including a 2D image signal or a 3D image signal; and

a barrier drive section to drive the parallax barrier by applying a barrier control signal,

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) the display drive section applies the 2D image signal to the display part, (2) the parallax barrier is driven by the barrier control signal such that 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) the display drive section applies the 3D image signal 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 a 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, and

the pixels of the first series are grouped into groups of four neighboring pixels with each pixel of a group corresponding to a respective viewpoint.

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

3. The display device according to claim 2, wherein a central coordinate in the horizontal direction of each pixel of the first series is equal to a central coordinate in the horizontal direction of a pixel of the second series neighboring on the pixel of the first series in the vertical direction.

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

5. The display device according to claim 1, wherein the distance between the pixels of the first series in the horizontal direction is larger than the first horizontal pixel width.

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

7. The display device according to claim 6, wherein the first and second series barriers are switchable liquid crystal barriers.

8. The display device according to claim 6, wherein the first series barriers and the second series barriers extend in a predetermined direction.

9. The display device according to claim 8, wherein a width of the first series barriers is smaller than the first horizontal pixel width.

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 the parallax barrier is comprised of openings and the second series barriers.

12. 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.

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

14. 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.

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 in one horizontal row and two of the pixels are in another horizontal row.

16. A display panel, comprising:

pixels of a first series each having a first horizontal pixel width;

pixels of a second series each having a second horizontal pixel width smaller than the first horizontal pixel width;

a parallax barrier comprised of (a) first series barriers or openings and (b) second series barriers;

a display drive section to drive the display pixels by applying an image signal including a 2D image signal or a 3D image signal; and

a barrier drive section to drive the parallax barrier by applying a barrier control signal,

wherein,

the pixels of the first series and the pixels of the second series are arrayed alternately in each of a horizontal direction and a vertical 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) the display drive section applies the 2D image signal to the pixels, (2) the parallax barrier is driven by the 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) the display drive section applies the 3D image signal to the pixels, (2) the parallax barrier is driven by the barrier control signal such that the first series barriers or openings are in a 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, and

in the second display mode, the pixels of the first series are grouped into groups of four neighboring pixels with each pixel of a group corresponding to a respective viewpoint.

17. 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 each having a first horizontal pixel width and pixels of a second series each having a second horizontal pixel width smaller than the first horizontal pixel width are arrayed alternately in each of a horizontal direction and a vertical direction,

the display unit includes a light beam control part that controls a light beam from the display part or a light beam toward the display part, the light beam control part including a parallax barrier comprised of (a) first series barriers or openings and (b) second series barriers arrayed alternatively in the horizontal direction,

the display unit includes a display drive section to drive the display part by applying an image signal including a 2D image signal or a 3D image signal,

the display unit includes a barrier drive section to drive the parallax barrier by applying a barrier control signal,

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) the display drive section applies the 2D image signal to the display part, (2) parallax barrier is driven by the 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) the display drive section applies the 3D image signal 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 a 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, and

in the second display mode, the pixels of the first series are grouped into groups of four neighboring pixels with each pixel of a group corresponding to a respective viewpoint.

18. A display device, comprising:

a display part including (a) pixels of a first series each having a first horizontal pixel width and (b) pixels of a second series each 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;

a light beam control part that controls a light beam from the display part or a light beam toward the display part;

a display drive section to drive the display part by applying an image signal including a 2D image signal or a 3D image signal; and

a barrier drive section to apply a barrier control signal,

wherein,

the light beam control part has a parallax barrier part that includes a plurality of liquid crystal barriers including first series barriers and second series barriers which are switchable between an open state passing light and a closed state blocking light,

the parallax barrier is driven by application of the barrier control signal,

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) the display drive section applies the 2D image signal to the display part, (2) the parallax barrier is driven by the 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) the display drive section applies the 3D image signal 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 a 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, and

in the second display mode, the pixels of the first series are grouped into groups of four neighboring pixels with each pixel of a group corresponding to a respective viewpoint.