Light-emitting element, method for producing same and light-emitting device

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United States of America Patent

PATENT NO 9202995
APP PUB NO 20140209954A1
SERIAL NO

14255059

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Abstract

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A light-emitting element that includes a first wavelength conversion unit and a second wavelength conversion unit. The first wavelength conversion unit includes a ceramic containing, as a primary component, a pyrochlore-type compound represented by A1B1Ow1. The second wavelength conversion unit includes a ceramic containing, as a primary component, a pyrochlore-type compound represented by A2B2Ow2. A1 and A2 each include at least one element selected from the group consisting of La, Y, Gd, Yb and Lu, and 0.001 mol % to 5 mol % of Bi. B1 and B2 each include at least one element selected from the group consisting of Sn, Zr and Hf. The content of La in A1 is higher than the content of La in A2. The contents of Y, Gd, and Lu in A2 are higher than the contents of Y, Gd and Lu in A1.

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Patent Owner(s)

  • MURATA MANUFACTURING CO., LTD.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kuretake, Satoshi Nagaokakyo, JP 14 113

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