Light emitting device and light unit having the same

Patent metadata

Field	Value
Publication number	US-2016268237-A1
Application number	US-201615064946-A
Country	US
Kind code	A1
Filing date	Mar 9, 2016
Priority date	Mar 11, 2015
Publication date	Sep 15, 2016
Grant date	—

Abstract

A light emitting device is provided. The light emitting device may include a body, first and second lead frames coupled to the body, a first light emitting chip on the first lead frame, a second light emitting chip on the second lead frame, and a reflective frame on the body and the first and second lead frames. The reflective frame may include a first opening provided therein with the first light emitting chip and a second opening provided therein with the second light emitting chip.

First claim

What is claimed is:

1 . A light emitting device comprising:
a body; first and second lead frames coupled to the body; a first light emitting chip on the first lead frame; a second light emitting chip on the second lead frame; and a reflective frame over the body and the first and second lead frames, wherein the reflective frame includes a plurality of openings spaced apart from each other, the plurality of openings having a first opening provided therein with the first light emitting chip and a second opening provided therein with the second light emitting chip.

2 . The light emitting device of claim 1 , wherein the reflective frame is formed of a metallic material.

3 . The light emitting device of claim 1 , wherein the reflective frame is spaced apart from the first and second lead frames and electrically insulated from the first and second lead frames.

4 . The light emitting device of claim 1 , wherein the first and second openings include sides that are inclined with respect to a bottom surface of the body.

5 . The light emitting device of claim 4 , wherein lower ends of lateral sides of the first and second openings are lower than a top surface of the light emitting chip.

6 . The light emitting device of claim 3 , further comprising a first connector connected with the first light emitting chip and a second connector connected with the second light emitting chip, wherein the reflective frame includes a separation part between the first and second openings, the separation part having a first recess connected with the first opening, a portion of the first connector provided in the first recess; and a second recess connected with the second opening, a portion of the second connector provided in the second recess.

7 . The light emitting device of claim 6 , wherein the first and second recesses are provided under a top surface of the separation part.

8 . The light emitting device of claim 6 , wherein the separation part includes a recess region provided at a lower portion thereof to connect the first and second recesses with each other.

9 . The light emitting device of claim 6 , further comprising a third lead frame provided between the first and second lead frames, connected with the first light emitting chip, and provided under the separation part of the reflective frame.

10 . The light emitting device of claim 9 , further comprising a fourth lead frame provided between the first and second lead frames, connected with the second light emitting chip, provided under the separation part of the reflective frame, and spaced apart from the third lead frame.

11 . The light emitting device of claim 10 , wherein the body includes first and second lateral side portions opposite to each other, and third and fourth lateral side portions opposite to each other,
the first and second lateral side portions having lengths longer than lengths of the third and fourth lateral side portions, the first lead frame having a first lead part that protrudes from the first lateral side portion of the body and a second lead part that protrudes from the second lateral side portion of the body, and the second lead frame having a third lead part that protrudes from the first lateral side portion of the body and a fourth lead part that protrudes from the second lateral side portion of the body.

12 . The light emitting device of claim 11 , wherein the third lead frame includes a fifth lead part that protrudes from the first lateral side portion of the body,
the fourth lead frame includes a sixth lead part that protrudes from the second lateral side of the body, the fifth lead part is provided between the first and third lead parts, the sixth lead part is provided between the second and fourth lead parts, the fifth lead part has a width wider than a bottom width of the third lead frame, and the sixth lead part has a width wider than a bottom width of the fourth lead frame.

13 . A light emitting device comprising:
a body having a cavity therein; first and second lead frames coupled to the body and provided in different regions of the cavity; third and fourth lead frames coupled to the body and provided between the first and second lead frames; a first light emitting chip on the first lead frame; a second light emitting chip on the second lead frame; and a reflective frame provided on the body and having a first opening that opens to an upper portion of the first light emitting chip, a second opening that opens to an upper portion of the second light emitting chip, and a separation part between the first and second openings, wherein the body includes first and second lateral side portions opposite to each other and third and fourth lateral side portions opposite to each other, the first and second lateral side portions have lengths longer than lengths of the third and fourth lateral side portions, the first lead frame includes a first lead part protruding from the first lateral side portion of the body and a second lead part protruding from the second lateral side portion of the body, the second lead frame includes a third lead part protruding from the first lateral side portion of the body and a fourth lead part protruding from the second lateral side portion of the body, the third lead frame includes a fifth lead part coupled to the first light emitting chip and protruding from the first lateral side portion of the body, and the fourth lead frame includes a sixth lead part coupled to the second light emitting chip and protruding from the second lateral side of the body.

14 . The light emitting device of claim 13 , further comprising:
a first connector connected with the first light emitting chip and the third lead frame; a second connector connected with the second light emitting chip and the fourth lead frame; a first protection chip on the third lead frame; and a third connector connected with the first protection chip and the first lead frame, wherein portions of the first to third connectors are provided under the separation part.

15 . The light emitting device of claim 14 , further comprising a second protection chip on the fourth lead frame; and a fourth connector connected with the second protection chip and the second lead frame.

16 . The light emitting device of claim 13 , further comprising a plurality of first couplers provided outside the body; and a plurality of second couplers provided outside the reflective frame and coupled to the first couplers, wherein one of the first and second couplers has a protrusion structure, and a remaining one of the first and second couplers has a groove structure.

17 . The light emitting device of claim 13 , further comprising an adhesive layer to bond a top surface of the body to the reflective frame.

18 . The light emitting device of claim 13 , further comprising a protrusion provided between the third and fourth lead frames and protruding from the top surface of the body, wherein the protrusion includes a material constituting the body and extends upward from top surfaces of the third and fourth lead frames.

19 . The light emitting device of claim 13 , wherein the separation part of the reflective frame is spaced apart from the protrusion.

20 . The light emitting device of claim 13 , further comprising a first phosphor film on the first light emitting chip; and a second phosphor film provided on the second light emitting chip.

Assignees

• Lg Innotek Co Ltd

Inventors

• Lee Tae Sung
• Ryu Young Min
• Jung Jae Hwan
• Choi Jong Beom

Classifications

• H10W90/756

  between a chip and a stacked lead frame, conducting package substrate or heat sink · CPC title

• H10W90/00 Primary

  Package configurations · CPC title

• H10H20/8506 Primary

  Containers · CPC title

• H10H20/857

  Interconnections, e.g. lead-frames, bond wires or solder balls · CPC title

• H10H20/856 Primary

  Reflecting means · CPC title