DISPLAY DEVICE

• US 20090303157A1
• Filed: 06/16/2006
• Published: 12/10/2009
• Est. Priority Date: 09/16/2005
• Status: Abandoned Application

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Fukushima, Hiroshi, Imai, Akira, Yabuta, Koji, Takatani, Tomoo, Koyama, Yoshihide
• Application Number:
  US12/066,587
• Publication Number:
  US 20090303157A1
• Time in Patent Office: Days
• US Class Current: 345/7
• CPC Class Codes: G02B 30/27 involving lenticular arrays
• CPC Class Codes: G02B 30/30 involving parallax barriers
• CPC Class Codes: G02F 1/1313 specially adapted for a particular application
• CPC Class Codes: G02F 1/1323 Arrangements for providing a switchable viewing angle
• CPC Class Codes: G09G 2300/02 Composition of display devices
• CPC Class Codes: G09G 2310/0218 with collection of electrodes in groups for n-dimensional addressing
• 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 2320/068 for control of viewing angle adjustment
• CPC Class Codes: G09G 3/003 to produce spatial visual effects
• CPC Class Codes: G09G 3/3611 Control of matrices with row and column drivers

Abstract

A display device (1a) of the present invention includes a displaying section (10), an image generating section (2) for generating an image signal, and a parallax barrier aperture array (17), distinction means (3) for judging whether cross talk of an image of another-pixels reaches a level at which the cross talk is perceived by a viewer of an image of self-pixels, and adjustment means (4) for adjusting the pixel signals of the another-pixels so as to eliminate the cross talk, in a case that the distinction means (3) judges the cross talk of the image of the another-pixels reaches to the perceivable level. This provides a display device and a vehicle equipped therewith, both of which display, on a single display screen, different images in a plurality of display directions and thus are capable of providing excellent display environments wherein the viewer of an image displayed in one display direction does not perceive cross talk of an image displayed in another direction.

Claims

1. A display device that displays different images in a plurality of display directions respectively, comprising:

displaying means in which a plurality of pixels for displaying the images in predetermined directions are aligned in certain orders for the respective display directions of the images;

an image generating section for generating image signals of the images displayed on the pixels; and

light shield means for blocking light beams emitted from the pixels so that the light beams are not watched from any directions other than the display directions of the pixels,

the display device comprising;

distinction means for judging whether cross talk of an image group b displayed in a direction other than a particular direction in which a viewer watches an image a displayed reaches a level at which the cross talk of the image group b is perceived by the viewer; and

adjustment means for adjusting the image signals of the image group b to eliminate the cross talk, once the distinction means judges that the cross talk reaches the level at which the cross talk is perceived by the viewer.

2. The display device as set forth in claim 1, wherein the image a is a first image displayed in a first direction and the image group b is a second image displayed in a second direction different from the first direction.

3. The display device as set forth in claim 2, wherein the distinction means comprises:

a luminance measuring section for measuring each luminance of the first image and the second image by digitalizing each image signal of the first image and the second image; and

a judging section for judging that the cross talk reaches the level at which the cross talk is perceived by the viewer, in a case that luminance of the second image exceeds a predetermined luminance.

4. The display device as set forth in claim 2, wherein the distinction means comprises:

a contrast measuring section for measuring each contrasts of the first image and the second image by digitalizing each image signal of the first image and the second image; and

a judging section for judging that the cross talk reaches the level at which the cross talk is perceived by the viewer, in a case that contrast of the second image exceeds a predetermined contrast.

5. The display device as set forth in claim 2, wherein the distinction means comprises:

an information signal generating section for generating an external information signal in accordance with external information different from the image signals; and

a judging section for judging that the cross talk reaches the level at which the cross talk is perceived by the viewer, in accordance with the external information signals.

6. The display device as set forth in claim 3, wherein the adjustment means is configured so as to lower luminance of the second image, in accordance with a judgment result by the judging section.

7. The display device as set forth in claim 4, wherein the adjustment means is configured so as to lower the contrast of the second image, in accordance with a judging result by the judging section.

8. The display device as set forth in claim 5, wherein the adjustment means is configured so as to make pixels for displaying the second image display the first image, in accordance with a judgment result by the judging section.

9. The display device as set forth in claim 3, wherein the adjustment means is configured so as to make the second image undisplayed, in accordance with a judgment result by the judging section.

10. The display device as set forth in claim 4, wherein the adjustment means is configured so as to lower the luminance of the second image to ¼

of original luminance.

11. The display device as set forth in claim 5, further comprising a clock time information outputting section capable of outputting clock time information, wherein the external information is the clock time information.

12. The display device as set forth in claim 3, wherein the external information is viewing information of the viewer of the first image.

13. The display device as set forth in claim 4, wherein the adjustment means is configured so as to make pixels for displaying the second image display the first image, in accordance with a judgment result by the judging section.

14. The display device as set forth in claim 5, wherein the adjustment means is configured so as to make pixels for displaying the second image display the first image, in accordance with a judgment result by the judging section.

15. The display device as set forth in claim 3, wherein the adjustment means is configured so as to make the second image undisplayed, in accordance with a judgment result by the judging section.

16. The display device as set forth in claim 4, wherein the adjustment means is configured so as to make the second image undisplayed, in accordance with a judgment result by the judging section.

17. The display device as set forth in claim 5, wherein the adjustment means is configured so as to make the second image undisplayed, in accordance with a judgment result by the judging section.

18. The display device as set forth in claim 6, wherein the adjustment means is configured so as to lower the luminance of the second image to ¼

of original luminance.

19. The display device as set forth in claim 7, wherein the adjustment means is configured so as to lower the luminance of the second image to ¼

of original luminance.

20. The display device as set forth in claim 8, wherein the adjustment means is configured so as to lower the luminance of the second image to ¼

of original luminance.

21. The display device as set forth in claim 5, further comprising a clock time information outputting section capable of outputting clock time information, wherein the external information is the clock time information.

22. The display device as set forth in claim 5, wherein the external information is viewing information of the viewer of the first image.