LIGHTING UNIT AND DISPLAY DEVICE HAVING THE SAME

• US 20110199788A1
• Filed: 01/14/2011
• Published: 08/18/2011
• Est. Priority Date: 01/18/2010
• Status: Active Grant

• Current Assignee: LG Innotek Company Limited (LG Corporation)
• Original Assignee: LG Innotek Company Limited (LG Corporation)
• Inventors: PARK, Joo Hyang
• Granted Patent: US 8,568,012 B2
• Time in Patent Office: Days
• US Class Current: 362/612
• CPC Class Codes: G02B 6/0023 provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
• CPC Class Codes: G02B 6/003 Lens or lenticular sheet or layer
• CPC Class Codes: G02F 1/133603 with LEDs
• CPC Class Codes: G02F 1/133607 the light controlling member including light directing or refracting elements, e.g. prisms or lenses
• CPC Class Codes: H01L 2224/48091 Arched
• CPC Class Codes: H01L 25/0753 the devices being arranged next to each other
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 33/50 Wavelength conversion elements
• CPC Class Codes: H01L 33/54 having a particular shape

Abstract

Provided are a lighting unit and a display device including the same. The lighting unit includes a bottom cover having a plurality of sidewalls, light emitting modules each including a board disposed on the bottom cover and a plurality of light emitting diodes mounted on the board, and a light-transmitting resin layer covering the bottom cover and the board.

Claims

1. A lighting unit comprising:

a bottom cover having a plurality of sidewalls;

a plurality of light emitting modules comprising a board disposed and a plurality of light emitting diodes mounted on the board; and

a light-transmitting resin layer covering the plurality of light emitting diodes and the board,

wherein the board is disposed on the bottom cover.

2. The lighting unit according to claim 1, wherein the plurality of light emitting module are disposed on a bottom surface of the bottom cover, and the resin layer covers the bottom cover.

3. The lighting unit according to claim 1, wherein an outer portion of the resin layer contacts a bottom surface and the sidewalls of the bottom cover.

4. The lighting unit according to claim 1, wherein a top surface of the resin layer has an area greater than that of a bottom surface of the bottom cover.

5. The lighting unit according to claim 1, wherein a top surface of the resin layer includes a rough surface.

6. The lighting unit according to claim 1, wherein a plurality of fixing grooves is formed in at least one of the sidewalls and a bottom surface of the bottom cover, and a portion of the resin layer is disposed in the fixing grooves.

7. The lighting unit according to claim 1, further comprising a reflective sheet including a plurality of holes between the board and the resin layer, and at least one light emitting diode is inserted into the holes of the reflective sheet.

8. The lighting unit according to claim 1, wherein the resin layer comprising:

a first resin layer on the bottom cover; and

a second resin layer on the first resin layer, the second resin layer having a refractive index less than that of the first resin layer.

9. The lighting unit according to claim 1, wherein a top surface of the resin layer has a lens array shape on which a plurality of convex portions corresponding to the plurality of light emitting diodes is arrayed.

10. The lighting unit according to claim 1, wherein the resin layer includes at least one of a phosphor, a diffuser, and a transparent material particle having a refractive index different from that of the resin layer.

11. A lighting unit comprising:

a bottom cover having a sidewall and a recess portion within the sidewall;

a plurality of light emitting disposed in the recess portion of the bottom cover and wherein each of the light emitting modules comprising a plurality of light emitting diodes;

a resin layer covering each of the light emitting modules; and

an optical sheet disposed on the light emitting modules.

12. The lighting unit according to claim 11, wherein the bottom cover comprising:

a metal layer;

an insulation layer on the metal layer; and

a plurality of electrode patterns on which the plurality of light emitting diodes are mounted, the plurality of electrode patterns being disposed on the insulation layer.

13. The lighting unit according to claim 11, each of the light emitting modules further comprises a board on which the plurality of light emitting diodes is mounted.

14. The lighting unit according to claim 13, further comprising a sheet support protrusion supporting the optical sheet between the plurality of light emitting modules.

15. The lighting unit according to claim 13, wherein the resin layer has a width less than that of the board.

16. The lighting unit according to claim 14, wherein the optical sheet comprises at least one of a diffusion sheet, a prism sheet, and a photo luminescent film.

17. The lighting unit according to claim 13, wherein a plurality of transparent material particles each having a refractive index greater than that of the resin layer within the resin layer.

19. The display device according to claim 17, wherein the resin layer contacts the sidewalls and a bottom surface of the bottom cover.

20. The display device according to claim 17, further comprising an optical sheet between the lighting unit and the display panel.

18. A display device comprising:

a lighting unit comprising a bottom cover having a plurality of sidewalls, light emitting modules each comprising a board disposed on the bottom cover and a plurality of light emitting diodes mounted on the board, and a light-transmitting resin layer covering the bottom cover and the board; and

a display panel on the lighting unit.