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Title:
MANUFACTURING METHOD FOR WAVELENGTH CONVERSION MEMBER, LIGHT-EMITTING DEVICE, AND WAVELENGTH CONVERSION MEMBER
Document Type and Number:
Japanese Patent JP2010248530
Kind Code:
A
Abstract:

To solve the problem that when a resin is used as material for dispersing a fluorescent material, there is the problem of degradation by ultraviolet rays, and in the case of adding a rare earth element to be an emission center as a component of glass itself, a good wavelength conversion effective is difficult to get, and the reproducibility is not good enough due to a change in luminescent color depending on manufacturing conditions.

The wavelength conversion member includes at least any one of particles of dispersed oxy-nitride fluorescent or nitride fluorescent material in glass with a softening point of 700°C or higher, the glass is oxynite glass. By the combination, the rare earth in the fluorescent material is not dissolved in the glass in a process for dispersing fluorescent particles and keeps a particles state, and also a wave length conversion efficiency is improved and is not degraded by excitation light from violet to ultra-violet. It is a wave length converting parts in which a light extraction efficiency from fluorescent material is high and not effected by an atomosphere such as moisture. A light emitting apparatus with a small size and a long life can be obtained by the wavelength converting parts in combination with the nitride semiconductor light-emitting element and the like.


Inventors:
TAKAHASHI KOSEI
Application Number:
JP2010169208A
Publication Date:
November 04, 2010
Filing Date:
July 28, 2010
Export Citation:
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Assignee:
SHARP KK
International Classes:
C09K11/64; C09K11/00; C09K11/08; H01L33/50; H01S5/022
Domestic Patent References:
JPH07149539A1995-06-13
JP2003258308A2003-09-12
JP2002363554A2002-12-18
JP2003206481A2003-07-22
JP2006202726A2006-08-03
JP2010261048A2010-11-18
JPH10319877A1998-12-04
JP2004128273A2004-04-22
JP2004071357A2004-03-04
JP2005175452A2005-06-30
Attorney, Agent or Firm:
Fukami patent office