Title:
CERAMIC-COPPER COMPOSITE, CERAMIC CIRCUIT BOARD, POWER MODULE, AND METHOD FOR MANUFACTURING CERAMIC-COPPER COMPOSITE
Document Type and Number:
WIPO Patent Application WO/2020/138283
Kind Code:
A1
Abstract:
Provided is a flat ceramic-copper composite comprising: a ceramic layer; a copper layer; and a brazing material layer disposed between the ceramic layer and the copper layer, wherein specific expression (1) is satisfied in a cut surface of the copper layer cut along a plane perpendicular to the main surface of the ceramic-copper composite, where S(102)% is the area ratio occupied by copper crystals having a crystal orientation inclined at an angle of 10° or less with respect to the crystal orientation of (102) plane, S(101)% is the area ratio occupied by copper crystals having a crystal orientation inclined at an angle of 10° or less with respect to the crystal orientation of (101) plane, S(111)% is the area ratio occupied by copper crystals having a crystal orientation inclined at an angle of 10° or less with respect to the crystal orientation of (111) plane, and S(112)% is the area ratio occupied by copper crystals having a crystal orientation inclined at an angle of 10° or less with respect to the crystal orientation of (112) plane.
Inventors:
YUASA AKIMASA (JP)
NAKAMURA TAKAHIRO (JP)
NISHIMURA KOJI (JP)
NAKAMURA TAKAHIRO (JP)
NISHIMURA KOJI (JP)
Application Number:
PCT/JP2019/051108
Publication Date:
July 02, 2020
Filing Date:
December 26, 2019
Export Citation:
Assignee:
DENKA COMPANY LTD (JP)
International Classes:
B23K1/00; C04B37/02; H01L23/12; H01L23/14; H01L23/15; H05K1/09; B22F1/05
Foreign References:
| JP2016139680A | 2016-08-04 | |||
| JP2013234383A | 2013-11-21 | |||
| JP2017075382A | 2017-04-20 | |||
| JP2016115821A | 2016-06-23 | |||
| JP2017175061A | 2017-09-28 | |||
| JP2003112980A | 2003-04-18 | |||
| JP2005268821A | 2005-09-29 | |||
| JP2015092552A | 2015-05-14 | |||
| JP2016039163A | 2016-03-22 | |||
| JPH10223809A | 1998-08-21 | |||
| JPH10214915A | 1998-08-11 | |||
| JP2018248175A | 2018-12-28 |
Other References:
See also references of EP 3903980A4
Attorney, Agent or Firm:
HAYAMI Shinji (JP)
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