Light emitting apparatus

• US 9,859,259 B2
• Filed: 03/08/2006
• Issued: 01/02/2018
• Est. Priority Date: 03/14/2005
• Status: Expired due to Fees

• Current Assignee: Seoul Semiconductor Co., Ltd.
• Original Assignee: Seoul Semiconductor Co., Ltd.
• Inventors: Lee, Jae Hong
• Primary Examiner(s): Miyoshi, Jesse Y
• Application Number:
  US11/908,102
• Publication Number:
  US 20080164484A1
• Time in Patent Office: 4,318 Days
• Field of Search: 257 98, 257 99, 257100
• CPC Class Codes: H01L 2224/48091 Arched
• CPC Class Codes: H01L 2224/49113 the connectors connecting different bonding areas on the semiconductor or solid-state body to a common bonding area outside the body, e.g. converging wires
• CPC Class Codes: H01L 25/0753 the devices being arranged next to each other
• 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 33/50 Wavelength conversion elements
• CPC Class Codes: H01L 33/501 characterised by the materials, e.g. binder
• CPC Class Codes: H01L 33/505 characterised by the shape, e.g. plate or foil
• CPC Class Codes: H01L 33/507 the elements being in intimate contact with parts other than the semiconductor body or integrated with parts other than the semiconductor body
• CPC Class Codes: H01L 33/56 Materials, e.g. epoxy or silicone resin

Abstract

The present invention provides a light emitting apparatus comprising a three-color light emitting device unit including at least three light emitting diode (LED) chips for respectively emitting red, green and blue light; a white light emitting device unit including at least one blue LED chip with a fluorescent substance formed thereon; and a substrate provided with a first electrode connected in common to ends of the LED chips and second electrodes formed to correspond respectively to the LED chips. Further, the present invention provides a light emitting apparatus comprising a plurality of LED chips; a substrate provided with a first electrode connected in common to ends of the plurality of LED chips and second electrodes formed to correspond respectively to the plurality of LED chips; an upper package formed on the substrate to surround the plurality of LED chips and to have a partition crossing the first electrode at the center of the upper package; and a molding member that encapsulates the plurality of LED chips and is divided by the partition of the upper package.

Claims

1. A light emitting apparatus, comprising:

a substrate having a support surface having a first side opposing a second side;

a three-color light emitting device disposed on the first side of the support surface and comprising red, green, and blue light emitting diode (LED) chips;

a white light emitting device disposed on the second side of the support surface and comprising second blue LED chips;

a first electrode disposed on the first side and the second side of support surface and electrically connected to each of the LED chips;

second electrodes disposed on the first side of the support surface surrounding the first electrode, each second electrode disposed on and electrically connected to a respective one of the LED chips of the three-color light emitting device;

third electrodes disposed on the second side of the support surface and surrounding the first electrode, each third electrode disposed on and electrically connected to a respective one of the second blue LED chips;

a molding member encapsulating the light emitting devices; and

a fluorescent substance selectively dispersed in the molding member, and localized around the second blue LED chips of the white light emitting device, wherein

the molding member completely covers at least two LED chips.

2. The apparatus as claimed in claim 1, wherein the fluorescent substance is dotted with a predetermined thickness to surround top and side surfaces of the respective one of the second blue LED chips.

3. The apparatus as claimed in claim 2, wherein the three-color light emitting device is configured to emit seven different colors of light.

4. The apparatus as claimed in claim 1, further comprising an upper package formed on the substrate and around the LED chips, the upper package having an inclined inner wall.

5. The apparatus as claimed in claim 4, wherein the three-color light emitting device is configured to emit seven different colors of light.

6. The apparatus as claimed in claim 1, wherein the molding member comprises a transparent resin.

7. The apparatus as claimed in claim 6, wherein the three-color light emitting device is configured to emit seven different colors of light.

8. The apparatus as claimed in claim 1, wherein the three-color light emitting device is configured to emit seven different colors of light.

9. The apparatus as claimed in claim 1, wherein the first electrode extends around a first edge of the substrate, and at least one of the third electrodes also extends around on the first edge of the substrate.

10. The apparatus as claimed in claim 9, wherein only the second electrodes extend around an opposing second edge of the substrate.

11. The apparatus as claimed in claim 9, wherein two of the third electrodes are disposed on opposing sides of the first electrode on the first edge of the substrate.

12. The apparatus as claimed in claim 11, wherein:

the first electrode extends from the first edge of the substrate to a central portion of the support surface of the substrate;

one of the second electrode extends from an opposing second edge of the substrate towards the first electrode; and

the remaining second electrodes are disposed on opposing sides of the second electrode and extend from the second edge of the substrate.

13. The apparatus as claimed in claim 1, wherein at least one of the second electrodes is disposed on the substrate adjacent to the first electrode in a first direction, and at least one other second electrode is not adjacent to the first electrode in the first direction.

14. The light emitting apparatus of claim 1, wherein the first electrode is surrounded by three second electrodes and two third electrodes.

15. The light emitting apparatus of claim 14, wherein three second electrodes extend around a first edge of the substrate, and the first and third electrodes extend around a second edge of the substrate opposite the first edge of the substrate.