Display device and instrument panel and automobile incorporating the same

• US 20050237345A1
• Filed: 04/19/2005
• Published: 10/27/2005
• Est. Priority Date: 04/21/2004
• Status: Active Grant

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Miyago, Makoto, Mizumaki, Hidetaka
• Granted Patent: US 8,063,919 B2
• Time in Patent Office: Days
• US Class Current: 345/690
• CPC Class Codes: G01D 13/02 Scales; Dials
• CPC Class Codes: G09G 2320/046 Dealing with screen burn-in prevention or compensation of the effects thereof
• CPC Class Codes: G09G 2320/0666 for control of colour parameters, e.g. colour temperature
• CPC Class Codes: G09G 2340/125 wherein one of the images is motion video
• CPC Class Codes: G09G 3/2051 with use of a spatial dither pattern
• CPC Class Codes: G09G 5/02 characterised by the way in which colour is displayed details of colour display specific for CRTs G09G1/28; specific for flat matrix panels other than liquid crystal displays G09G3/2003; specific for liquid crystal displays G09G3/3607
• CPC Class Codes: G09G 5/397 Arrangements specially adapted for transferring the contents of two or more bit-mapped memories to the screen simultaneously, e.g. for mixing or overlay G09G5/02 takes precedence

Abstract

A display device includes a display panel for displaying information, and a driving circuit for driving the display panel. The driving circuit of the display device is capable of changing, with a lapse of display time, a displayed color of information which is statically displayed on the display panel.

Claims

1. A display device comprising:

a display panel for displaying information; and

a driving circuit arranged to drive the display panel;

wherein

the driving circuit is capable of changing, with a lapse of display time, a displayed color of information which is statically displayed on the display panel.

2. The display device of claim 1, wherein the driving circuit is capable of effecting the change in the displayed color in a discontinuous manner.

3. The display device of claim 1, wherein the driving circuit is capable of effecting the change in the displayed color in a gradual manner.

4. The display device of claim 1, wherein the driving circuit does not change, with the lapse of display time, a displayed position of the information which is statically displayed on the display panel.

5. The display device of claim 1, wherein the driving circuit includes a first memory arranged to store information to be statically displayed on the display panel, a second memory arranged to store information to be dynamically displayed on the display panel, and a color conversion section arranged to change the displayed color of the information which is statically displayed on the display panel.

7. The display device of claim 1, wherein the display panel includes a plurality of pixels arranged in a matrix configuration, and each of the plurality of pixels includes a first color dot corresponding to a first color, a second color dot corresponding to a second color, and a third color dot corresponding to a third color.

8. The display device of claim 7, wherein the change in the displayed color is effected by changing a luminance of one of the first color dot, the second color dot, and the third color dot.

9. The display device of claim 7, wherein the change in the displayed color is effected by varying display signal voltages supplied from the driving circuit to the first color dot, the second color dot, and the third color dot.

10. The display device of claim 9, wherein the first color dot is an R dot corresponding to a red color, the second color dot is a G dot corresponding to a green color, and the third color dot is a B dot corresponding to a blue color, and the change in the displayed color is effected so as to compensate for a change in tristimulus values X, Y, and Z of the XYZ colorimetric system caused by a change in the luminance of one of the R dot, the G dot, and the B dot, the compensation being made by a change in the luminances of the other two of the R dot, the G dot, and the B dot.

11. The display device of claim 7, wherein each of the plurality of pixels includes an additional first color dot corresponding to the first color, an additional second color dot corresponding to the second color, and an additional third color dot corresponding to the third color.

12. The display device of claim 1, wherein the display panel includes a plurality of pixels arranged in a matrix configuration, and each of the plurality of pixels includes a plurality of subpixels each including a first color dot corresponding to a first color, a second color dot corresponding to a second color, and a third color dot corresponding to a third color.

13. The display device of claim 12, wherein the first color dot is an R dot corresponding to a red color, the second color dot is a G dot corresponding to a green color, and the third color dot is a B dot corresponding to a blue color, and the change in the displayed color is effected so as to compensate for a change in tristimulus values X, Y, and Z of the XYZ calorimetric system caused by a change in the luminance of one of the plurality of subpixels, the compensation being made by a change in the luminance of another of the plurality of subpixels.

14. The display device of claim 1, wherein the display device is a display device for an instrument panel to be mounted in an automotive vehicle.

15. An instrument panel comprising the display device of claim 1.

16. An automotive vehicle comprising the instrument panel of claim 15.

17. The display device of claim 1, wherein the display device is a display device for an amusement device.

18. An amusement device comprising the display device of claim 1.

6. A display device comprising:

a display panel for displaying information; and

a driving circuit arranged to drive the display panel;

wherein

the driving circuit includes a first memory arranged to store information to be statically displayed on the display panel, a second memory arranged to store information to be dynamically displayed on the display panel, and a color conversion section arranged to change a displayed color of information which is statically displayed on the display panel.

19. A display device comprising:

a display panel for displaying information; and

a driving circuit arranged to drive the display panel;

wherein

the display panel includes a plurality of pixels arranged in a matrix configuration;

each of the plurality of pixels includes a plurality of subpixels each including a first color dot corresponding to a first color, a second color dot corresponding to a second color, and a third color dot corresponding to a third color; and

the driving circuit switches, with a lapse of display time, gray scale levels displayed by the first, second, and third color dots included in at least one of the plurality of pixels which is statically displaying information, between the plurality of subpixels.

20. The display device of claim 19, wherein the display device is a display device for an instrument panel to be mounted in an automotive vehicle.

21. An instrument panel comprising the display device of claim 19.

22. An automotive vehicle comprising the instrument panel of claim 21.

23. The display device of claim 19, wherein the display device is a display device for an amusement device.

24. An amusement device comprising the display device of claim 19.

25. A method for driving a display device having a display panel for displaying information, the method comprising:

a first step of statically displaying information in a first portion of the display panel and dynamically displaying information in a second portion of the display panel;

wherein

the first step includes a second step of changing, with a lapse of display time, a displayed color of the information which is statically displayed in the first portion of the display panel.

26. The display device driving method of claim 25, wherein the second step is performed so that the displayed color is changed discontinuously.

27. The display device driving method of claim 25, wherein the second step is performed so that the displayed color is changed gradually.

28. The display device driving method of claim 25, wherein the second step is performed so that a displayed position of the information which is statically displayed on the display panel is not changed with the lapse of display time.

29. The display device driving method of claim 25, wherein the display panel includes a plurality of pixels arranged in a matrix configuration, each of the plurality of pixels includes an R dot corresponding to a red color, a G dot corresponding to a green color, and a B dot corresponding to a blue color, and the second step is performed so as to compensate for a change in tristimulus values X, Y, and Z of the XYZ colorimetric system caused by a change in the luminance of one of the R dot, the G dot, and the B dot, the compensation being made by a change in the luminances of the other two of the R dot, the G dot, and the B dot.

30. The display device driving method of claim 25, wherein the display panel includes a plurality of pixels arranged in a matrix configuration, each of the plurality of pixels includes a plurality of subpixels each including an R dot corresponding to a red color, a G dot corresponding to a green color, and a B dot corresponding to a blue color, and the second step is performed so as to compensate for a change in tristimulus values X, Y, and Z of the XYZ calorimetric system caused by a change in the luminance of one of the plurality of subpixels, the compensation being made by a change in the luminance of another of the plurality of subpixels.

31. A method for driving a display device having a display panel for displaying information, wherein the display panel includes a plurality of pixels arranged in a matrix configuration, and each of the plurality of pixels includes a plurality of subpixels each including a first color dot corresponding to a first color, a second color dot corresponding to a second color, and a third color dot corresponding to a third color, the method comprising:

a first step of statically displaying information in a first portion of the display panel and dynamically displaying information in a second portion of the display panel;

wherein

the first step includes a second step of switching, with a lapse of display time, gray scale levels displayed by the first, second, and third color dots included in at least one of the plurality of pixels which is statically displaying information, between the plurality of subpixels.