Tiled display device

• US 20060012733A1
• Filed: 06/29/2005
• Published: 01/19/2006
• Est. Priority Date: 06/30/2004
• Status: Active Grant

• Current Assignee: LG Display Co., Ltd.
• Original Assignee: LG Philips LCD Company Limited (LG Display Co., Ltd.)
• Inventors: Kim, Min Joo, Jin, Hyun Suk
• Granted Patent: US 7,239,367 B2
• Time in Patent Office: Days
• US Class Current: 349/73
• CPC Class Codes: G02F 1/13336 Combining plural substrates to produce large-area displays, e.g. tiled displays
• CPC Class Codes: G02F 1/133512 Light shielding layers, e.g. black matrix G02F1/136209 takes precedence
• CPC Class Codes: G02F 1/133514 Colour filters
• CPC Class Codes: G02F 1/133524 Light-guides, e.g. fibre-optic bundles, louvered or jalousie light-guides

Abstract

A tiled display device is disclosed. The disclosed tiled display device includes a plurality of display panels each having an image display part in which a plurality of pixels are formed. The tiled display device includes a support frame having a plurality of panel receiving portions such that the plurality of display panels are tiled side by side and received therein. The tiled display device also includes a plurality of light guides each formed of an optical fiber bundle and disposed on the corresponding display panel, each light guide having an image receiving surface and a display surface that have different surface areas from each other, wherein a light and an image transmitted from the image display part are received by the image receiving surface and are reproduced on the display surface. In addition, the tiled display device includes a black matrix film provided on the display panel and having apertures and a light shielding portion to prevent the light from being leaked to a dead zone between optical fibers in the optical fiber bundle.

Claims

1. A tiled display device, comprising:

a plurality of display panels each having an image display part in which a plurality of pixels are formed;

a support frame having a plurality of panel receiving portions such that the plurality of display panels are tiled side by side and received therein;

a plurality of light guides each formed of an optical fiber bundle and disposed on the corresponding display panel, each light guide having an image receiving surface and a display surface that have different surface areas from each other, wherein a light and an image transmitted from the image display part are received by the image receiving surface and are reproduced on the display surface; and

a black matrix film provided on the display panel and having apertures and a light shielding portion to prevent the light from being leaked to a dead zone between optical fibers in the optical fiber bundle.

2. The device according to claim 1, wherein each of the optical fibers in the optical fiber bundle corresponds to at least one of the pixels.

3. The device according to claim 1, wherein a surface area of the display surface is greater than that of the image receiving surface.

4. The device according to claim 1, wherein each of the pixels includes a plurality of sub-pixels and a black matrix formed in a matrix along boundaries of the sub-pixels.

5. The device according to claim 4, wherein the plurality of sub-pixels includes 4-color sub-pixels.

6. The device according to claim 5, wherein the 4-color sub-pixels are arranged in a 2×

2 quad form, wherein the first sub pixel is an R (red) sub-pixel, the second sub-pixel is a G (green) sub-pixel, the third sub-pixel is a B (blue) sub-pixel, and the fourth sub-pixel is one of a W (white) sub-pixel or a Y (yellow) sub-pixel.

7. The device according to claim 1, wherein the apertures are circular.

8. The device according to claim 1, wherein the image display part of the display panel is divided into a plurality of regions, and aperture ratios of the pixels are varied according to the divided regions.

9. The device according to claim 8, wherein the plurality of regions include a central region and an edge region, and an aperture ratio of the pixels in the central region is smaller than an aperture ratio of the pixels in the edge region.

10. The device according to claim 8, wherein the aperture ratio of the pixels in the image display part is the smallest at the central region and gradually increases toward the edge region.

11. The device according to claim 1, wherein the display panel is a liquid crystal panel.

12. A tiled display device, comprising:

a plurality of display panels each having an image display part in which a plurality of pixels are formed, wherein each pixel includes 4-color sub-pixels and a black matrix formed in a matrix along boundaries of the sub pixels;

a support frame having a plurality of panel receiving portions such that the plurality of display panels are tiled side by side and received therein;

a plurality of light guides formed of an optical fiber bundle and disposed on the corresponding display panel, each light guide having an image receiving surface and a display surface that have different surface areas from each other, wherein a light and an image transmitted from the image display part are received by the image receiving surface and are reproduced on the display surface; and

a black matrix film provided on the display panel and having circular apertures and a light shielding portion to prevent the light from being leaked to a dead zone between optical fibers in the optical fiber bundle,

wherein the image display part of the display panel is divided into a plurality of regions, and aperture ratios of the pixels are varied according to the divided regions.

13. The device according to claim 12, wherein each of the optical fibers in the optical fiber bundle corresponds to at least one of the pixels.

14. The device according to claim 12, wherein a surface area of the display surface is greater than that of the image receiving surface.

15. The device according to claim 12, wherein the 4-color sub-pixels are arranged in a 2×

2 quad form, wherein the first sub pixel is an R (red) sub-pixel, the second sub-pixel is a G (green) sub-pixel, the third sub-pixel is a B (blue) sub-pixel, and the fourth sub-pixel is one of a W (white) sub-pixel or a Y (yellow) sub-pixel.

16. The device according to claim 12, wherein the plurality of regions include a central region and an edge region, and an aperture ratio of the pixels in the central region is smaller than an aperture ratio of the pixels in the edge region.

17. The device according to claim 16, wherein the circular aperture of the black matrix film corresponding to the central region is smaller than the circular aperture of the black matrix film corresponding to the edge region.

18. The device according to claim 16, wherein the black matrix along the boundaries of the sub-pixels in the central region is wider than the black matrix along the boundaries of the sub-pixels in the edge region.

19. The device according to claim 16, wherein the black matrix at the boundary of one of the 4-color sub-pixels in the central region is wider than the black matrix at the boundary of the same-colored sub-pixel in the edge region.

20. The device according to claim 19, wherein the one of the 4-color sub-pixels is one of a W (white) sub-pixel and a Y (yellow) sub-pixel.

21. The device according to claim 16, wherein the aperture ratio of the pixels in the image display part is the smallest at the central region and gradually increases toward the edge region.

22. The device according to claim 21, wherein the size of the circular apertures of the black matrix is the smallest at the central region and gradually increases toward the edge region.

23. The device according to claim 21, wherein the width of the black matrix at the boundaries of the sub-pixels is the smallest at the central region and gradually increases toward the edge region.

24. The device according to claim 21, wherein the width of the black matrix at the boundary of one of the 4-color sub-pixels is the smallest at the central region and gradually increases toward the edge region.

25. The device according to claim 24, wherein the one of the 4-color sub-pixels is one of a W (white) sub-pixel and a Y (yellow) sub-pixel.

26. The device according to claim 12, wherein the display panel is a liquid crystal panel.

27. The device according to claim 26, wherein the liquid crystal panel includes:

first and second substrates;

gate lines and data lines arranged on the first substrate and defining the sub-pixels;

a pixel electrode formed at each of the sub-pixels;

a switching device disposed at each intersection of the gate lines and the data lines and switching the corresponding one of the sub-pixels;

a color filter formed on the second substrate;

a common electrode formed on the color filter; and

a liquid crystal layer formed on the first and second substrates.

28. The device according to claim 26, wherein the liquid crystal panel includes:

first and second substrates;

gate lines and data lines arranged on the first substrate and defining the sub-pixels;

a pixel electrode and a common electrode formed at each of the sub-pixels and generating an electric field;

a switching device disposed at each intersection of the gate lines and the data lines and switching the corresponding one of the sub-pixels;

a color filter formed on the first substrate; and

a liquid crystal layer formed between the first and second substrates.