Display device displaying single or dual images and method of driving the same

1. A display device, comprising:

a display cell having a plurality of sub-pixels to make a single image or dual images, the plurality of sub-pixels including a first group for displaying a first image of the dual images and a second group for displaying a second image of the dual images; and

a control cell for passing through the single image, and guiding the first image toward a first direction and the second image toward a second direction different from the first direction,

wherein the control cell includes a plurality of first electrodes spaced apart from each other and a plurality of second electrodes spaced apart from each other, wherein the plurality of first electrodes face the plurality of second electrodes,

wherein the control cell includes first and second regions alternately arranged, the first and second regions are transparent for the single image, and the first and second regions are alternatingly transparent and opaque, respectively, for displaying the dual images,

wherein a width of the first region is determined according to a first number of the plurality of first and second electrodes that a voltage is not applied and a width of the second region is determined according to a second number of the plurality of first and second electrodes that the voltage is applied,

wherein the first and second directions are controlled by the widths of the first and second regions,

wherein the plurality of sub-pixels include first and second alternately arranged sub-pixels, and the first and second sub-pixels make the first and second images, respectively,

wherein each of the first and second sub-pixels has first, second and third colors such that the first sub-pixel of the first color, the second sub-pixel of the first color, the first sub-pixel of the second color, the second sub-pixel of the second color, the first sub-pixel of the third color and the second sub-pixel of the third color are sequentially arranged,

wherein the first and second sub-pixels having the same color adjoin each other, and

wherein the first region overlaps the two adjacent first and second sub-pixels having the same color and the second region overlaps the two adjacent first and second sub-pixels having the different color.

2. The device according to claim 1 , wherein the control cell includes first and second regions alternately arranged, and the first and second regions are transparent for the single image, and the first and second regions are alternatingly transparent and opaque, respectively, for displaying the dual images.

3. The device according to claim 2 , wherein the control cell includes an electro-chromatic cell having first and second substrates, an electro-chromatic material between the first and second substrates, a plurality of first electrodes on an inner surface of the first substrate, and a plurality of second electrodes on an inner surface of the second substrate, wherein the first and second electrodes correspond to each other.

4. The device according to claim 3 , wherein the plurality of first electrodes and the plurality of second electrodes are arranged both in the first and second regions.

5. The device according to claim 3 , wherein the plurality of first electrodes and the plurality of second electrodes are arranged in the second region.

6. The device according to claim 3 , wherein the electro-chromatic material includes at least one of tungsten oxide (WO 3 ), molybdenum oxide (MoO 3 ), titanium oxide (TiO 3 ), vanadium oxide (V 2 O 5 ), iridium oxide (IrO 2 ), niobium oxide (Nb 2 O 5 ) and nickel oxide (NiO).

7. The device according to claim 1 , wherein the display cell includes a liquid crystal cell.

8. The device according to claim 7 , wherein the liquid crystal cell includes an IPS mode cell, an FFS mode cell and a VA mode cell.

9. A method of driving a display device, comprising:

making a single image or dual images in a display cell having a plurality of sub-pixels, the plurality of sub-pixels including a first group for displaying a first image of the dual images and a second group for displaying a second image of the dual images;

passing the single image through a control cell to display the single image, and guiding the first image toward a first direction and the second image toward a second direction different from the first direction through the control cell to display the dual images; and

applying first and second data signals to first and second sub-pixels alternately arranged of the plurality of sub-pixels, respectively, to make the dual images, the first and second data signals being for the first and second images, respectively,

wherein the control cell includes a plurality of first electrodes spaced apart from each other and a plurality of second electrodes spaced apart from each other,

wherein the plurality of first electrodes face the plurality of second electrodes,

wherein the control cell includes first and second regions alternately arranged, the first and second regions are transparent for the single image, and the first and second regions are alternatingly transparent and opaque, respectively, for displaying the dual images,

wherein a width of the first region is determined according to a first number of the plurality of first and second electrodes that a voltage is not applied and a width of the second region is determined according to a second number of the plurality of first and second electrodes that the voltage is applied,

wherein the first and second directions are controlled by the widths of the first and second regions,

wherein the first and second sub-pixels make the first and second images, respectively,

wherein each of the first and second sub-pixels has first, second and third colors such that the first sub-pixel of the first color, the second sub-pixel of the first color, the first sub-pixel of the second color, the second sub-pixel of the second color, the first sub-pixel of the third color and the second sub-pixel of the third color are sequentially arranged,

wherein the first and second sub-pixels having the same color adjoin each other,

wherein the first region overlaps the two adjacent first and second sub-pixels having the same color and the second region overlaps the two adjacent first and second sub-pixels having the different color.

10. The method according to claim 9 , wherein the control cell includes first and second regions alternately arranged, and the first and second regions are transparent for the single image and the first and second regions are alternatingly transparent and opaque, respectively, for the dual images.

11. The method according to claim 10 , wherein the control cell includes an electro-chromatic cell having first and second substrates, an electro-chromatic material between the first and second substrates, a plurality of first electrodes on an inner surface of the first substrate, and a plurality of second electrodes on an inner surface of the second substrate, and the first and second electrodes correspond to each other.

12. The method according to claim 11 , wherein the plurality of first electrodes and the plurality of second electrodes are arranged both in the first and second regions.

13. The method according to claim 12 , wherein the plurality of first and second electrodes in the second region are applied with voltages to make the electro-chromatic material in the second region opaque when displaying the dual images.

14. The method according to claim 11 , wherein the plurality of first electrodes and the plurality of second electrodes are arranged in the second region.

15. The method according to claim 14 , wherein the plurality of first and second electrodes are supplied with voltages to make the electro-chromatic material in the second region opaque when displaying the dual images.

16. The method according to claim 11 , wherein the electro-chromatic material includes at least one of tungsten oxide (WO 3 ), molybdenum oxide (MoO 3 ), titanium oxide (TiO 3 ), vanadium oxide (V 2 O 5 ), iridium oxide (IrO 2 ), niobium oxide (Nb 2 O 5 ) and nickel oxide (NiO).

17. The method according to claim 9 , wherein the display cell includes a liquid crystal cell.

18. The method according to claim 17 , wherein the liquid crystal cell includes an IPS mode cell, an FFS mode cell and a VA mode cell.

19. A method of driving a display device, comprising:

making a single image or dual images in a display cell having a plurality of sub-pixels, the plurality of sub-pixels including a first group for displaying a first image of the dual images and a second group for displaying a second image of the dual images;

making a control cell entirely transparent for the single image to pass through when displaying the single image, alternatingly transparent and opaque to pass the first and second images toward first and second directions, respectively, and blocking the first and second images toward the second and first directions, respectively, when displaying the dual images; and

applying first and second data signals to first and second sub-pixels alternately arranged of the plurality of sub-pixels, respectively, to make the dual images, the first and second data signals being for the first and second images, respectively,

wherein the control cell includes a plurality of first electrodes spaced apart from each other and a plurality of second electrodes spaced apart from each other,

wherein the plurality of first electrodes face the plurality of second electrodes,

wherein the control cell includes first and second regions alternately arranged, the first and second regions are transparent for the single image, and the first and second regions are alternatingly transparent and opaque, respectively, for displaying the dual images,

wherein a width of the first region is determined according to a first number of the plurality of first and second electrodes that a voltage is not applied and a width of the second region is determined according to a second number of the plurality of first and second electrodes that the voltage is applied,

wherein the first and second directions are controlled by the widths of the first and second regions,

wherein the first and second sub-pixels make the first and second images, respectively,

wherein each of the first and second sub-pixels has first, second and third colors such that the first sub-pixel of the first color, the second sub-pixel of the first color, the first sub-pixel of the second color, the second sub-pixel of the second color, the first sub-pixel of the third color and the second sub-pixel of the third color are sequentially arranged,

wherein the first and second sub-pixels having the same color adjoin each other,

wherein the first region overlaps the two adjacent first and second sub-pixels having the same color and the second region overlaps the two adjacent first and second sub-pixels having the different color.

20. The method according to claim 19 , further comprising alternately applying voltages to a electro-chromatic material of the control cell to make portions of the control cell transparent and opaque alternately.