Title:
COMPOSITE SUBSTRATE FOR LED LIGHT EMITTING ELEMENT, METHOD OF PRODUCTION OF SAME, AND LED LIGHT EMITTING ELEMENT
Document Type and Number:
WIPO Patent Application WO/2010/092972
Kind Code:
A1
Abstract:
A substrate for an LED light emitting element having a small difference of linear thermal expansion coefficient with the III-V semiconductor crystal constituting an LED, having an excellent thermal conductivity, and suitable for high output LEDs. A porous body comprises one or more materials selected from silicon carbide, aluminum nitride, silicon nitride, diamond, graphite, yttrium oxide, and magnesium oxide and has a porosity that is 10 to 50 volume% and a three-point bending strength that is 50 MPa or more. The porous body is impregnated, by means of liquid metal forging, with aluminum alloy or pure aluminum at an impregnation pressure of 30 MPa or more, cut and/or ground to a thickness of 0.05 to 0.5 mm and to a surface roughness (Ra) of 0.01 to 0.5 μm, then is formed with a metal layer comprising one or more elements selected from Ni, Co, Pd, Cu, Ag, Au, Pt, and Sn on its surface to a thickness of 0.5 to 15 μm, so as to thereby produce the composite substrate for the LED light emitting element.
Inventors:
HIROTSURU Hideki (1 Shinkai-machi, Omuta-sh, Fukuoka 10, 〒8368510, JP)
廣津留 秀樹 (〒10 福岡県大牟田市新開町１ 電気化学工業株式会社 大牟田工場内 Fukuoka, 〒8368510, JP)
TSUKAMOTO Hideo (1 Shinkai-machi, Omuta-sh, Fukuoka 10, 〒8368510, JP)
廣津留 秀樹 (〒10 福岡県大牟田市新開町１ 電気化学工業株式会社 大牟田工場内 Fukuoka, 〒8368510, JP)
TSUKAMOTO Hideo (1 Shinkai-machi, Omuta-sh, Fukuoka 10, 〒8368510, JP)
Application Number:
JP2010/051935
Publication Date:
August 19, 2010
Filing Date:
February 10, 2010
Export Citation:
Assignee:
DENKI KAGAKU KOGYO KABUSHIKI KAISHA (1-1 Nihonbashi-Muromachi 2-chome, Chuo-ku Tokyo, 38, 〒1038338, JP)
電気化学工業株式会社 (〒38 東京都中央区日本橋室町二丁目１番１号 Tokyo, 〒1038338, JP)
HIROTSURU Hideki (1 Shinkai-machi, Omuta-sh, Fukuoka 10, 〒8368510, JP)
廣津留 秀樹 (〒10 福岡県大牟田市新開町１ 電気化学工業株式会社 大牟田工場内 Fukuoka, 〒8368510, JP)
電気化学工業株式会社 (〒38 東京都中央区日本橋室町二丁目１番１号 Tokyo, 〒1038338, JP)
HIROTSURU Hideki (1 Shinkai-machi, Omuta-sh, Fukuoka 10, 〒8368510, JP)
廣津留 秀樹 (〒10 福岡県大牟田市新開町１ 電気化学工業株式会社 大牟田工場内 Fukuoka, 〒8368510, JP)
International Classes:
H01L33/64; B22D18/02; B32B15/04; C04B41/88; C23C30/00
Attorney, Agent or Firm:
SONODA Yoshitaka et al. (SONODA & KOBAYASHI, 34th Floor Shinjuku Mitsui Building, 1-1, Nishi-Shinjuku 2-chome, Shinjuku-k, Tokyo 34, 〒1630434, JP)