LIGHT EMISSION DEVICE AND DISPLAY DEVICE

• US 20080093973A1
• Filed: 06/06/2007
• Published: 04/24/2008
• Est. Priority Date: 10/24/2006
• Status: Abandoned Application

• Current Assignee: Samsung SDI Company Limited
• Original Assignee: Samsung SDI Company Limited
• Inventors: Lee, Hyun-Chul, Jeong, Seung-Hee, Jung, Kang-Sik
• Application Number:
  US11/759,180
• Publication Number:
  US 20080093973A1
• Time in Patent Office: Days
• US Class Current: 313/495
• CPC Class Codes: H01J 63/02 Details, e.g. electrode, gas filling, shape of vessel
• CPC Class Codes: H01J 63/06 Lamps with luminescent screen excited by the ray or stream

Abstract

A light emission device includes a vacuum vessel having a first substrate and a second substrate. The first substrate has a first substrate surface and the second substrate has a second substrate first surface and a second substrate second surface opposing the second substrate first surface. The first substrate surface is separated from the second substrate first surface. An electron emission unit is provided on the first substrate surface. A light emission unit is provided on the second substrate first surface for emitting light in response to receiving electrons emitted from the electron emission unit. A plurality of heat dissipation barrier ribs is provided on the second substrate second surface, the barrier ribs being spaced from each other.

Claims

1. A light emission device comprising:

a vacuum vessel having a first substrate and a second substrate, the first substrate having a first substrate surface, the second substrate having a second substrate first surface and a second substrate second surface opposing the second substrate first surface, the first substrate surface being separated from the second substrate first surface;

an electron emission unit provided on the first substrate surface;

a light emission unit provided on the second substrate first surface for emitting light in response to receiving electrons emitted from the electron emission unit; and

a plurality of heat dissipation barrier ribs provided on the second substrate second surface, the barrier ribs being spaced from each other.

2. The light emission device of claim 1, wherein the heat dissipation barrier ribs are formed across an active area of the second substrate.

3. The light emission device of claim 2, further comprising at least one support arranged on the plurality of heat dissipation barrier ribs at a periphery of the active area to fix the heat dissipation barrier ribs.

4. The light emission device of claim 3, wherein the at least one support intersects the plurality of heat dissipation barrier ribs.

5. The light emission device of claim 1,

wherein each barrier rib has a barrier rib first end and a barrier rib second end, and

wherein a first support intersects each barrier rib first end and a second support intersects each barrier rib second end.

6. The light emission device of claim 1, wherein:

wherein each barrier rib has a barrier rib first end and a barrier rib second end,

wherein a first support is provided for intersecting barrier rib first ends and a second support is provided for intersecting barrier rib second ends,

wherein a pair of periphery barrier ribs of the plurality of barrier ribs intersects both the first support and the second support, and

wherein adjacent barrier ribs between the pair of periphery barrier ribs alternately intersect the first support and the second support.

7. The light emission device of claim 1, wherein a reflective layer is formed on an inner surface of each heat dissipation barrier rib located on a periphery of the active area.

8. The light emission device of claim 7, wherein the reflective layer is metal.

9. The light emission device of claim 8, wherein the reflective layer is deposited on each heat dissipation barrier rib located on the periphery of the active area.

10. The light emission device of claim 1, wherein the plurality of heat dissipation barrier ribs are glass.

11. The light emission device of claim 1, wherein each of the heat dissipation barrier ribs has a thickness equal to or less than 200 μ

m.

12. The light emission device of claim 1, the light emission device further comprising a plurality of phosphor layers, a black layer located between the phosphor layers, and an anode electrode located on a phosphor layer surface and a black layer surface;

wherein the heat dissipation barrier ribs are aligned with the black layer.

13. The light emission device of claim 1, wherein the electron emission unit comprises:

a first electrode overlapping and insulated from a second electrode; and

an electron emission region electrically connected to one of the first electrode and the second electrode.

14. A display device comprising:

a display panel for displaying an image; and

a light emission device located on one side of the display panel for emitting light toward the display panel,

wherein the light emission device includes;

a vacuum vessel having a first substrate and a second substrate, the first substrate having a first substrate surface, the second substrate having a second substrate first surface and a second substrate second surface opposing the second substrate first surface, the first substrate surface being separated from the second substrate first surface;

an electron emission unit provided on the first substrate surface;

a light emission unit provided on the second substrate first surface for emitting light in response to receiving electrons emitted from the electron emission unit; and

a plurality of heat dissipation barrier ribs provided on the second substrate second surface, the barrier ribs being spaced from each other.

15. The device of claim 14, wherein the plurality of heat dissipation barrier ribs are formed across an active area of the second substrate.

16. The device of claim 15, further comprising at least one support arranged on the plurality of heat dissipation barrier ribs at a periphery of the active area to fix the plurality of heat dissipation barrier ribs.

17. The device of claim 16,

wherein each barrier rib has a barrier rib first end and a barrier rib second end, and

wherein a first support intersects each barrier rib first end and a second support intersects each barrier rib second end.

18. The device of claim 15, wherein a reflective layer is formed on an inner surface of each heat dissipation barrier rib located on the periphery of the active area.

19. The device of claim 14, wherein the display panel is a liquid crystal panel.

20. The device of claim 14, the display panel further comprising first pixels and the light emission device further comprising second pixels,

wherein there are fewer second pixels than first pixels;

and

wherein an intensity of light emitted from the second pixels is independently controlled.