Title:
LIGHT EMISSION DEVICE
Document Type and Number:
WIPO Patent Application WO/2011/096074
Kind Code:
A1
Abstract:
Disclosed is a light emission device (100) comprising: an LED chip (1) which can emit light having a specific wavelength; and a wavelength conversion unit into which the light emitted from the LED chip (1) enters and which can convert the entered light into light having a specific wavelength. The wavelength conversion unit is formed by a ceramic layer (4) that is produced using a phosphor-containing polysilazane as a raw material, the surface layer part of the ceramic layer (4) has a phosphor-free layer (41) which has a thickness of 0.05 to 20 μm inclusive.
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Inventors:
WASHIZU TAKASHI (JP)
Application Number:
PCT/JP2010/051748
Publication Date:
August 11, 2011
Filing Date:
February 08, 2010
Export Citation:
Assignee:
KONICA MINOLTA OPTO INC (JP)
WASHIZU TAKASHI (JP)
WASHIZU TAKASHI (JP)
International Classes:
H01L33/50
Foreign References:
| JP2008244357A | 2008-10-09 | |||
| JP2006319238A | 2006-11-24 | |||
| JP2005057239A | 2005-03-03 | |||
| JP2000349346A | 2000-12-15 | |||
| JP2007250629A | 2007-09-27 | |||
| JP2009147312A | 2009-07-02 | |||
| JP2009540558A | 2009-11-19 |
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