Title:
CERAMIC SUBSTRATE, LAMINATE, AND SAW DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/073782
Kind Code:
A1
Abstract:
A ceramic substrate that is formed from a polycrystalline ceramic and has a supporting main surface. At the supporting main surface, the average value of the crystal grain size of the polycrystalline ceramic is at least 40 μm but less than 500 μm, and the standard deviation is less than 1.5 times the average value.
Inventors:
GESHI KEIICHIROU (JP)
HASEGAWA MASATO (JP)
NAKAYAMA SHIGERU (JP)
HASEGAWA MASATO (JP)
NAKAYAMA SHIGERU (JP)
Application Number:
PCT/JP2018/034962
Publication Date:
April 18, 2019
Filing Date:
September 21, 2018
Export Citation:
Assignee:
SUMITOMO ELECTRIC INDUSTRIES (JP)
International Classes:
C04B35/00; C04B35/495; H03H9/25
Foreign References:
| JP2010083729A | 2010-04-15 | |||
| JP2017095333A | 2017-06-01 | |||
| JP2016100729A | 2016-05-30 | |||
| JPH08148957A | 1996-06-07 |
Attorney, Agent or Firm:
NAKATA Motomi et al. (JP)
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