Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
RED PHOSPHOR AND LIGHT EMISSION DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/073864
Kind Code:
A1
Abstract:
The purpose of the present invention is to both improve the brightness of a SCASN phosphor and achieve depth of color rendering properties. Provided is a red phosphor represented by general formula MAlSiN3 and having a main crystal phase with the same crystal structure as that of CaAlSiN3 , and characterized in that the internal quantum efficiency when excited by light with a wavelength of 455 nm is 71% or more, and that in the general formula, M is an element group comprising at least three elements from the set consisting of Eu, Sr, Mg, Ca, and Ba and essentially comprising Eu, Sr, and Ca, with the Eu content of 4.5 to 7.0 mass%, Sr content of 34.0 to 42.0 mass%, and Ca content of 0.8 to 3.0 mass%.

More Like This:
JP7072171Semiconductor nanoparticles and light source equipment
JP2022523716Methods for controlling the condition of plants
WO/2022/168705PHOSPHOR AND METHOD FOR PRODUCING PHOSPHOR
Inventors:
NOMIYAMA TOMOHIRO (JP)
TAKAMURA MARINA (JP)
TAKEDA YUSUKE (JP)
WATANABE SHINTARO (JP)
Application Number:
PCT/JP2018/036942
Publication Date:
April 18, 2019
Filing Date:
October 02, 2018
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
DENKA COMPANY LTD (JP)
International Classes:
C09K11/64; H01L33/50
Domestic Patent References:
WO2012053595A12012-04-26
WO2017128492A12017-08-03
WO2017128493A12017-08-03
WO2016021705A12016-02-11
WO2015002139A12015-01-08
WO2018092696A12018-05-24
Foreign References:
CN106281322A2017-01-04
US20140167601A12014-06-19
JP2016535800A2016-11-17
JP2005336253A2005-12-08
JP6381845B12018-08-29
Attorney, Agent or Firm:
AXIS PATENT INTERNATIONAL (JP)
Download PDF:
View/Download PDF      PDF Help



 
Previous Patent: FUTON FORMED BY HOUSING A CORE MATERIAL IN A THREE-DIMENSIONAL STRUCTURE REGION, AND METHOD FOR MANU...

Next Patent: INDUSTRIAL ROBOT