Barrier and image display device with the same

1. An image display device comprising:

an image panel;

a barrier having the color change regions spaced apart from each other in a repetitive

pattern on the image panel,

wherein the color change regions selectively change into light transmission regions or

light blockage regions,

a light source between the image panel and the barrier,

wherein the barrier switches an image of the image panel into a 2D or 3D image, and the light source comprises a light guide plate disposed on a surface of the barrier and an at least one UV lamps disposed at a side of the light guide plate.

2. The image display device according to claim 1 , wherein one of the UV lamps emits a wavelength of below 390 nm.

3. The image display device according to claim 1 , wherein one of the UV lamps emits a wavelength of 390 to 450 nm.

4. The image display device according to claim 1 , wherein the image panel comprises selecting one of the group consisting of an LCD (liquid crystal display device), an OLED (organic electroluminescent display device), a PDP (plasma display panel), a CRT (cathode ray tube), and an FED (field emission display device).

5. The image display device according to claim 1 , wherein the color change region is formed on a transparent substrate.

6. The image display device according to claim 1 , wherein the color change region is formed of a photochromic layer.

7. The image display device according to claim 6 , wherein the photochromic layer is formed of at least one selected from the group consisting of a spiropyrane-based compound, an azobenzen-based compound, a diarylethene-based compound, a spironaphthoxazine-based compound, and dihydropyridine and furylfulgide derivatives.

8. The image display device according to claim 6 , wherein the photochromic layer has a thickness of 400 to 2000 Å.

9. The image display device according to claim 6 , wherein the photochromic layer is formed of a material with a reversible color change in a wavelength range of below 450 nm.

10. The image display device according to claim 1 , further comprising a protection layer on the color change region.

11. The image display device according to claim 5 , further comprising a top substrate interposed between the substrate and the color change region to face each other.

12. The image display device according to claim 1 , wherein the color change region becomes opaque in a wavelength range of below 390 nm to embody a 3D image, and the color change region becomes transparent in a wavelength range of 390 to 450 nm to embody a 2D image.

13. The image display device according to claim 1 , wherein the barrier is formed on a light guide plate that projects light to the color change region.

14. The image display device according to claim 1 , further comprising a backlight unit disposed on another surface of the image panel to emit light for an image display to the image panel.

15. The image display device according to claim 14 , the backlight unit includes a light source for a barrier and a light source for an image panel.