IP Library › Granted Patent US 9,917,236
Granted Patent B2
US 9,917,236 · App. 15/495,822 · Granted Mar 13, 2018

Light emitting device and method for producing the same

Inventors: Suguru Beppu (Anan, JP); Yoichi Bando (Anan, JP); Hiroto Tamaki (Anan, JP); Takuya Nakabayashi (Tokushima, JP)
Assignee: NICHIA CORPORATION
H01L33/60H01L33/50H01L2933/0041H01L2933/0058
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Quick Facts
Patent No.
US 9,917,236
App. No.
15/495,822
Granted
Mar 13, 2018
Kind
B2
Abstract

A light emitting device includes a semiconductor light emitting element; and a light reflective member having a multilayer structure and covering the side faces of the semiconductor light emitting element. The light reflective member includes: a first layer disposed on an inner, semiconductor light emitting element side, the first layer comprising a light-transmissive resin containing a light reflective substance, and a second layer disposed in contact with an outer side of the first layer, the second layer comprising a light-transmissive resin containing the light reflective substance at a lower content than that of the first layer.

Claims (15)

1. A method of manufacturing a light emitting device, the method comprising:

providing a structure comprising:

a substrate that includes a first wiring electrode and a second wiring electrode located at an upper surface of the substrate,

a light emitting element mounted on the upper surface of the substrate,

a wavelength conversion member disposed on or above an upper surface of the light emitting element,

a light-transmissive member disposed on an upper surface of the wavelength conversion member, and

a light reflective member disposed on each side surface of the light emitting element, the wavelength conversion member and the light-transmissive member and disposed on an upper surface of the light-transmissive member,

removing a portion of the light reflective member and a portion of the light-transmissive member that are located in a region that extends from an upper surface of the light reflective member to a position between the upper surface and a lower surface of the light-transmissive member.

2. The method of manufacturing a light emitting device according to claim 1 , wherein, after removing said portion of the light reflective member and said portion of the light-transmissive member, a thickness of the light-transmissive member is less than a thickness of the wavelength conversion member.

3. The method of manufacturing a light emitting device according to claim 1 , wherein said portion of the light reflective member and said portion of the light-transmissive member are removed such that, after the removing step, an upper surface of the light reflective member is coplanar with the upper surface of the light-transmissive member.

4. The method of manufacturing a light emitting device according to claim 1 , wherein the light reflective member includes silicone resin and TiO 2 .

5. The method of manufacturing a light emitting device according to claim 1 , wherein the wavelength conversion member includes a phosphor adapted to emit red light and a phosphor adapted to emit green light.

6. The method of manufacturing a light emitting device according to claim 5 , wherein the phosphor adapted to emit red light is a KSF-based phosphor, and the phosphor adapted to emit green light is a β-SiAlON-based phosphor.

7. The method of manufacturing a light emitting device according to claim 1 , wherein the light emitting device further comprises an additional light-transmissive member located between the light emitting element and the wavelength conversion member.

8. The method of manufacturing a light emitting device according to claim 7 , wherein the additional light-transmissive member covers the upper surface of the light emitting element and a portion of a side surface of the light emitting element.

Priority Claims (1)
JP 2014-197340 · Sep 26, 2014 · national
Continuity (2)
Division 14866317 · Sep 25, 2015
Related Publication 20170229624A1 · Aug 10, 2017