LIGHT EMITTING DEVICE

Title:

LIGHT EMITTING DEVICE

Document Type and Number:

WIPO Patent Application WO/2015/020205

Kind Code:

A1

Abstract:

Provided is a light emitting device which is suitable for a lighting apparatus, such as a projector, requiring high brightness and high light intensity, exhibits little change in light emission colour and a low reduction in light emission intensity during usage, and uses a remote phosphor. According to one embodiment of the present invention, the light emitting device (10) has: an LED element (12); a side wall (13) which surrounds the LED element (12); a phosphor layer (15) which is fixed to the side wall (13) with an adhesive layer (14) therebetween, and is positioned above the LED element (12); and a metal pad (11) as a heat dissipating member. The side wall (13) has: an insulating base (13b) which surrounds the LED element (12); and a metal layer (13a) which is formed on a side surface at the LED element (12) side of the base (13b), and is in contact with the metal pad (11) and the adhesive layer (14). The adhesive layer (14) is: a resin layer that comprises a resin containing particles which have higher thermal conductivity than the resin; or a layer that comprises solder.

Inventors:

INOMATA DAISUKE (JP)
SANO HIROAKI (JP)
YOSHIDA SEITARO (JP)
AOKI KAZUO (JP)
SHIMAMURA KIYOSHI (JP)
GARCIA VILLORA ENCARNACION ANTONIA (JP)

Application Number:

PCT/JP2014/071057

Publication Date:

February 12, 2015

Filing Date:

August 08, 2014

Export Citation:

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Assignee:

KOHA CO LTD (JP)
TAMURA SEISAKUSHO KK (JP)
NAT INST FOR MATERIALS SCIENCE (JP)

International Classes:

H01L33/50; H01L33/64

Domestic Patent References:

WO2011024934A1	2011-03-03
WO2012057330A1	2012-05-03

Foreign References:

JP2013004814A	2013-01-07
JP2007200727A	2007-08-09
JP2012039031A	2012-02-23
JP2010003674A	2010-01-07
JP2003347601A	2003-12-05
JP2012099315A	2012-05-24

Other References: