Filter and display apparatus having the same

Abstract

A display apparatus includes a display and a display filter, wherein the display filter includes a base film and a plurality of beads, wherein each bead includes a light absorbing element and a transparent layer.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other features and advantages of the present invention will become more apparent to those of ordinary skill in the art by describing in detail exemplary embodiments thereof with reference to the attached drawings, in which:

FIG. 1 illustrates a cross-sectional view of a filter according to an embodiment of the present invention;

FIG. 2 illustrates a cross-sectional view of a filter according to another embodiment of the present invention;

FIG. 3 illustrates an exploded perspective view of a display apparatus having a filter according to an embodiment of the present invention; and

FIG. 4 illustrates a cross-sectional view taken along a line IV-IV of FIG. 3.

Claims

1. A display apparatus, comprising: a display; anda display filter, wherein the display filter includes: a base film; anda plurality of beads, wherein each bead includes a light absorbing element and a transparent layer.

2. The display apparatus as claimed in claim 1, wherein the display includes pixels of a predetermined size, and light absorbing elements of adjacent beads are separated by a distance corresponding to the predetermined size.

3. The display apparatus as claimed in claim 1, wherein the display includes pixels of a predetermined size, and a size of the bead corresponds to the predetermined size.

4. The display apparatus as claimed in claim 1, wherein the display includes a plasma display panel having discharge cells of a predetermined width, and a width of the bead corresponds to the predetermined width.

5. The display apparatus as claimed in claim 1, wherein the display filter is directly attached to the display.

6. A display filter, comprising: a base film; anda plurality of beads, wherein each bead includes a light absorbing element and a transparent layer.

7. The filter as claimed in claim 6, further comprising a coating layer on the base film, the coating layer fixing the plurality of beads to the base film.

8. The filter as claimed in claim 7, wherein the coating layer and the transparent layer have substantially the same refractive index.

9. The filter as claimed in claim 7, wherein the coating layer includes a dye or a pigment that modifies at least one of a color and a transmittance of visible light.

10. The filter as claimed in claim 6, wherein the light absorbing element is a black bead.

11. The filter as claimed in claim 6, wherein the beads abut one another.

12. The filter as claimed in claim 6, wherein the light absorbing element is substantially surrounded by the transparent layer.

13. The filter as claimed in claim 6, wherein the volume of the light absorbing element is about 3% to about 80% of the volume of the bead.

14. The filter as claimed in claim 6, wherein the diameter of the bead is about 3 μm to about 30 μm.

15. The filter as claimed in claim 6, wherein the bead is substantially spherical.

16. The filter as claimed in claim 6, wherein the bead has a circular or oval cross-section.

17. The filter as claimed in claim 6, further comprising a reflection prevention layer.

18. The filter as claimed in claim 6, further comprising an electromagnetic shielding layer.

19. The filter as claimed in claim 18, further comprising: an adhesive layer on the electromagnetic shielding layer; anda reflection prevention layer on the adhesive layer.

20. The filter as claimed in claim 6, further comprising a color correction layer.