Light emitting device

• US 8,408,738 B2
• Filed: 04/21/2010
• Issued: 04/02/2013
• Est. Priority Date: 04/21/2009
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Jung, Bupsung, Kim, Sungwoo, Bae, Seungchoon, Seo, Buwan, Kwon, Soonhyung, Park, Sangtae
• Primary Examiner(s): Neils, Peggy A.
• Application Number:
  US12/764,717
• Publication Number:
  US 20100265694A1
• Time in Patent Office: 1,077 Days
• Field of Search: 362/249.02, 362/97.3, 362/311.02, 362/296.02, 362/296.04, 362/800, 362/241, 362/245, 362/310, 257/100, 257/98
• US Class Current: 362/249.02
• CPC Class Codes: G02B 6/0021 for housing at least a part of the light source, e.g. by forming holes or recesses
• CPC Class Codes: G02B 6/0068 Arrangements of plural sources, e.g. multi-colour light sources
• CPC Class Codes: G02B 6/0078 Side-by-side arrangements, e.g. for large area displays
• CPC Class Codes: G02F 1/133602 Direct backlight
• CPC Class Codes: G02F 1/133603 with LEDs
• CPC Class Codes: G02F 1/133628 with cooling means

Abstract

A light emitting device is disclosed. The light emitting device includes a reflective layer, a plurality of light emitting components disposed on the reflective layer, and a resin layer formed on the plurality of light emitting components and the reflective layer.

Claims

1. A light emitting device comprising:

a substrate;

a reflective sheet disposed on the substrate;

a plurality of light emitting components disposed on the substrate;

a resin layer formed on the plurality of light emitting components and the reflective sheet;

a reflective pattern layer disposed on the resin layer, the reflective pattern layer overlapping with the light emitting components in a vertical direction; and

a plurality of diffusers disposed on the reflective sheet,

wherein the reflective pattern layer includes a first reflective pattern layer corresponding to first light emitting components and a second reflective pattern layer corresponding to second light emitting components adjacent to the first light emitting components,

wherein the first light emitting components and the second light emitting components emit a light in a lateral direction, and

wherein a distance between the first light emitting components and the second reflective pattern layer is different from a distance between the second light emitting components and the first reflective pattern layer.

2. The light emitting device of claim 1, wherein the plurality of light emitting components are a plurality of light emitting chips.

3. The light emitting device of claim 1, wherein the plurality of light emitting components are a plurality of light emitting packages, each package including a light emitting chip.

4. The light emitting device of claim 1, wherein the plurality of light emitting components are disposed in at least one array.

5. The light emitting device of claim 1, wherein the resin layer completely covers the light emitting components.

6. The light emitting device of claim 1, wherein the resin layer contacts the light emitting components and the reflective sheet.

7. The light emitting device of claim 1, wherein a thickness of at least one of the plurality of light emitting components is equal to a thickness of the resin layer.

8. The light emitting device of claim 1, further comprising third light emitting components adjacent to the second light emitting components,

wherein each of the first, second and third light emitting components includes a light emitting surface,

wherein the light emitting surface of the first light emitting components faces the second light emitting components, and the light emitting surface of the second light emitting components faces the third light emitting components, and

wherein the distance between the first light emitting components and the second reflective pattern layer is greater than the distance between the second light emitting components and the first reflective pattern layer.