LIGHT-EMITTING DEVICE

• US 20130161659A1
• Filed: 11/30/2012
• Published: 06/27/2013
• Est. Priority Date: 12/26/2011
• Status: Active Grant

• Current Assignee: Toyoda Gosei Company Limited (Toyota Motor Corporation)
• Original Assignee: Toyoda Gosei Company Limited (Toyota Motor Corporation)
• Inventors: Ito, Yuhki, Matsuura, Kenichi
• Granted Patent: US 9,236,414 B2
• Time in Patent Office: Days
• US Class Current: 257/88
• CPC Class Codes: H01L 25/0753 the devices being arranged next to each other
• CPC Class Codes: H01L 27/15 including semiconductor components having potential barriers, specially adapted for light emission
• 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 2924/0002 Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
• CPC Class Codes: H01L 33/50 Wavelength conversion elements

Abstract

A light-emitting device includes a substrate, and a plurality of light-emitting elements that are mounted on the substrate and each include an LED chip and a phosphor layer on a surface thereof. A maximum deviation in a value of a chromaticity coordinate x of light emitted from the plurality of light-emitting elements is not less than 0.0125.

Claims

1. A light-emitting device, comprising:

a substrate; and

a plurality of light-emitting elements that are mounted on the substrate and each comprise an LED chip and a phosphor layer on a surface thereof,

wherein a maximum deviation in a value of a chromaticity coordinate x of light emitted from the plurality of light-emitting elements is not less than 0.0125.

2. The light-emitting device according to claim 1, wherein the maximum deviation in the value of the chromaticity coordinate x is not more than 0.1000.

3. The light-emitting device according to claim 1, wherein the maximum deviation in the value of the chromaticity coordinate x is not less than 0.0250.

4. The light-emitting device according to claim 1, wherein the maximum deviation in the value of the chromaticity coordinate x is not less than 0.0375.

5. The light-emitting device according to claim 3, wherein the maximum deviation in the value of the chromaticity coordinate x is not more than 0.1000.

6. The light-emitting device according to claim 4, wherein the maximum deviation in the value of the chromaticity coordinate x is not more than 0.1000.