Light emitting apparatus with an opening part, manufacturing method thereof, and light unit

• US 8,704,263 B2
• Filed: 08/24/2007
• Issued: 04/22/2014
• Est. Priority Date: 08/24/2006
• Status: Active Grant

• Current Assignee: Suzhou Lekin Semiconductor Company Limited
• Original Assignee: LG Innotek Company Limited (LG Corporation)
• Inventors: Son, Won Jin
• Primary Examiner(s): Trinh, Hoa B
• Application Number:
  US11/844,837
• Publication Number:
  US 20080048203A1
• Time in Patent Office: 2,433 Days
• Field of Search: 257/99, 257/666, 257/100, 257/95, 257/98, 257 81- 82, 257/88, 257/79, 257/E51.018, 257/E51.019, 257/E51.02, 257/E51.022, 257/E33.001, 257/E33.066, 257/E33.072
• US Class Current: 257/99
• CPC Class Codes: H01L 2224/45015 being circular
• CPC Class Codes: H01L 2224/45139 Silver (Ag) as principal constituent
• CPC Class Codes: H01L 2224/48091 Arched
• CPC Class Codes: H01L 2224/49107 on the semiconductor or solid-state body
• 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 2924/00011 Not relevant to the scope of the group, the symbol of which is combined with the symbol of this group
• CPC Class Codes: H01L 2924/00012 Relevant to the scope of the group, the symbol of which is combined with the symbol of this group
• CPC Class Codes: H01L 2924/00014 the subject-matter covered by the group, the symbol of which is combined with the symbol of this group, being disclosed without further technical details
• CPC Class Codes: H01L 2924/01049 Indium [In]
• CPC Class Codes: H01L 2924/181 Encapsulation
• CPC Class Codes: H01L 2924/207 Diameter ranges
• CPC Class Codes: H01L 33/486 adapted for surface mounting
• CPC Class Codes: H01L 33/60 Reflective elements

Abstract

Provided are a light emitting apparatus and a light unit. The light emitting apparatus comprises a first substrate, a second substrate, and a light emitting device. The first substrate has a plurality of lead frames, and the second substrate has an opening part on the first substrate. The light emitting device is mounted on a portion of the first substrate that is below the opening part. The light unit comprises at least one light emitting apparatus and an optical member on a light emitting path of the light emitting apparatus.

Claims

1. A light emitting apparatus comprising:

a first substrate comprising at least two lead frames;

a second substrate on the first substrate, wherein the second substrate comprises a first opening part exposing a portion of the first substrate, wherein the second substrate comprises a first portion and a second portion separated from each other by the first opening part, wherein the first portion of the second substrate and the second portion of the second substrate are not part of a single, continuous surface;

a light emitting device on the exposed portion of the first substrate and electrically connected to the at least two lead frames;

a first reflection frame disposed on an inner sidewall of the first portion of the second substrate and a second reflection frame disposed on an inner sidewall of the second portion of the second substrate,

wherein the first reflection frame and the second reflection frame are completely separated from each other,

wherein the first substrate is not divided into physically separate portions, and wherein the first portion of the second substrate is disposed on a first area of the first substrate, and wherein the second portion of the second substrate is disposed on a second area of the first substrate different from the first area,

wherein the first opening part is opened in an at least three different directions from a region between the first portion and the second portion of the second substrate,

wherein a portion of the first reflection frame is disposed between a top surface of the first substrate and a bottom surface of the second substrate,

wherein a portion of the second reflection frame is disposed between the top surface of the first substrate and the bottom surface of the second substrate.

2. The apparatus according to claim 1, further comprising a mold member disposed in the first opening part,

wherein the at least two lead frames are disposed on the top surface of the first substrate and the light emitting device is disposed on at least one of the at least two lead frames,

wherein a width of the mold member in the same direction as a width of the first substrate is the same as the width of the first substrate,

wherein the width of the first substrate is taken in a first horizontal direction,

wherein a length of the first substrate is taken in a second horizontal direction orthogonal to the first horizontal direction,

wherein the mold member directly contacts the first reflection frame and the second reflection frame, and

wherein each of the first and second portions of the second substrate has a width equal to that of the second substrate and equal to that of the first opening part.

3. The apparatus according to claim 2, wherein the width of the mold member in the same direction as the width of the second substrate is the same as the width of the second substrate.

4. The apparatus according to claim 1, further comprising at least one heatsink hole in at least one of the at least two lead frames.

5. The apparatus according to claim 1, further comprising an adhesive member disposed between the first substrate and the second substrate.

6. The apparatus according to claim 1, further comprising a third substrate on the second substrate and having a second opening part dividing the third substrate on the second substrate.

7. The apparatus according to claim 6, wherein the second opening part of the third substrate is the same size as or larger than the first opening part of the second substrate.

8. The apparatus according to claim 2,

wherein the mold member comprises:

a first side and a second side directly contacted with the inner sidewalls of the first and second portions of the second substrate, respectively;

a third side adjacent to the first side and spaced apart from the inner sidewalls of the first and second portions of the second substrate; and

a fourth side adjacent to the second side and spaced apart from the inner sidewalls of the first and second portions of the second substrate,

wherein the first side is opposite to the second side,

wherein the third side is opposite to the fourth side,

wherein an interval between the third side and the fourth side is the same as the width of the first substrate.

16. The apparatus according to claim 2, wherein the first and second portions of the second substrate are separated from each other.

17. The apparatus according to claim 8, wherein the first and second reflection frames are contacted with the first and second sides of the mold member and are spaced apart from the third and fourth sides of the mold member,

wherein a top portion of the first reflection frame is higher than a top surface of the second substrate, and

wherein a top portion of the second reflection frame is higher than the top surface of the second substrate.

9. A light emitting apparatus comprising:

a first substrate;

a plurality of lead frames on the first substrate;

a second substrate and a third substrate spaced apart from each other on the first substrate,

an opening part between the second and third substrates;

a light emitting device electrically connected to the plurality of lead frames disposed on the first substrate; and

a mold member disposed on the light emitting device and between the second and third substrates,

wherein the light emitting device is disposed between the second substrate and the third substrate,

wherein the second and third substrates are separated from each other and are not part of a single, continuous substrate.

10. The apparatus according to claim 9,

wherein the opening part is opened in an at least three different directions from a region between the second and third substrates,

wherein the mold member has a width equal to that of each of the second and third substrates,

wherein the width of the mold member in the same direction as a width of the first substrate is the same as the width of the first substrate,

wherein the width of the first substrate is taken in a first direction,

wherein a length of the first substrate is taken in a second direction orthogonal to the first direction,

wherein the mold member directly contacts the second substrate and the third substrate, and

wherein a width of the opening part in the first horizontal direction is the same as the width of the first substrate.

11. The apparatus according to claim 9, wherein a width of the mold member is the same as a width of the second substrate and a width of the third substrate.

12. The apparatus according to claim 9, wherein the second substrate includes a first reflection frame disposed on an inner sidewall of the second substrate, wherein the third substrate includes a second reflection frame disposed on an inner sidewall of the third substrate, and

wherein the first and second reflection frames are formed of a metal material.

13. The apparatus according to claim 12, wherein the plurality of lead frames comprise a first lead frame disposed between the second substrate and the first substrate, and a second lead frame disposed between the third substrate and the first substrate,

wherein the first reflection frame is electrically connected to the first lead frame and the second reflection frame is electrically connected to the second lead frame.

18. The apparatus according to claim 9, wherein a top portion of the mold member is higher than a top surface of each of the plurality of second substrates.

19. The apparatus according to claim 18, wherein the top portion of the mold member is directly contacted with the top surface of each of the plurality of second substrates.

14. A light emitting apparatus comprising:

a first substrate;

a plurality of lead frames on the first substrate;

a plurality of second substrates spaced apart from each other on the first substrate and are not part of a single, continuous substrate,

an opening part between the plurality of second substrates;

a light emitting device electrically connected to the plurality of lead frames disposed on the first substrate; and

a mold member disposed on the light emitting device and between the plurality of second substrates,

wherein a width of each of the plurality of second substrates is equal to that of the first substrate, and

wherein the width of each of the plurality of second substrates is equal to that of the opening part.

15. The apparatus according to claim 14,

wherein the opening part is opened in an at least three different directions from a region between the plurality of second substrates,

wherein a width of the mold member in the same direction as a width of the first substrate is the same as the width of the first substrate, and

wherein the second substrates of the plurality of second substrates are not contacted with each other and each of the second substrates of the plurality of second substrates directly contacts the mold member.