Title:
GLASS CERAMIC COMPOSITION, SUBSTRATE FOR LIGHT-EMITTING ELEMENT, AND LIGHT-EMITTING DEVICE
Document Type and Number:
WIPO Patent Application WO/2012/015015
Kind Code:
A1
Abstract:
Provided is a glass ceramic composition which enables the production of a substrate that is used for a light-emitting element and has high reflectivity and high heat conductivity, and which can prevent the occurrence of breakage of a substrate for a light-emitting element during the production process thereof.
A glass ceramic composition for use in the production of a substrate on which a light-emitting element is to be mounted, which comprises a glass powder in an amount of 30-45 mass%, an alumina powder in an amount of 35-50 mass% and a zirconia powder in an amount of 10-30 mass% all relative to the total amount of the glass powder, the alumina powder and the zirconia powder, wherein the zirconia powder has an average particle diameter of one-fourth or less of that of the alumina powder.
Inventors:
IMAKITA, Kenji (Limited 12-1, Yurakucho 1-chome, Chiyoda-k, Tokyo 05, 〒1008405, JP)
Application Number:
JP2011/067370
Publication Date:
February 02, 2012
Filing Date:
July 28, 2011
Export Citation:
Assignee:
ASAHI GLASS COMPANY, LIMITED (5-1 Marunouchi 1-chome, Chiyoda-ku Tokyo, 05, 〒1008405, JP)
旭硝子株式会社 (〒05 東京都千代田区丸の内一丁目５番１号 Tokyo, 〒1008405, JP)
旭硝子株式会社 (〒05 東京都千代田区丸の内一丁目５番１号 Tokyo, 〒1008405, JP)
International Classes:
C04B35/111; H01L23/15; H01L33/60; H01L33/64; H05K1/03; H05K3/46
Attorney, Agent or Firm:
SENMYO, Kenji et al. (4th Floor, SIA Kanda Square17, Kanda-konyach, Chiyoda-ku Tokyo 35, 〒1010035, JP)
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Claims:
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